34 results on '"Lopeztegui-Castillo, Alexander"'
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2. Spiny lobster Panulirus argus (Decapoda: Palinuridae) trophic spectrum update using diet descriptors and indices applied for first time in Cuba
- Author
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Martínez-Coello, Diana, Lopeztegui-Castillo, Alexander, and Puga-Millán, Rafael
- Published
- 2022
- Full Text
- View/download PDF
3. Influence of several stressful factors on the condition of seagrasses at Sabana–Camagüey Archipelago, Cuba
- Author
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Martínez-Daranas, Beatriz, Betanzos-Vega, Abel, Lopeztegui-Castillo, Alexander, Capetillo-Piñar, Norberto, and Castellanos-Iglesias, Susel
- Published
- 2021
- Full Text
- View/download PDF
4. Benthic Index for Estimating Food Availability in Two Soft Bottoms Fishing Areas
- Author
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Lopeztegui-Castillo, Alexander, Martínez-Coello, Diana, and Abitia-Cárdenas, Leonardo Andrés
- Published
- 2021
- Full Text
- View/download PDF
5. Condicion nutricional de la langosta, Panulirus argus (Decapoda: Palinuridae): 60 anos de indices extensivos y variacion espacio-temporal en Cuba
- Author
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Lopeztegui Castillo, Alexander and Capetillo Piñar, Norberto
- Published
- 2021
- Full Text
- View/download PDF
6. Space-time variations of megazoobenthos subject to natural and anthropogenic impacts in two Cuban bays: evidence of recovery?
- Author
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Lopeztegui-Castillo, Alexander, Capetillo-Pinar, Norberto, Betanzos-Vega, Abel, Martinez-Daranas, Beatriz, Martinez-Coello, Diana, and Abitia-Cardenas, Leonardo Andres
- Published
- 2021
- Full Text
- View/download PDF
7. 35 años de cambio en densidad y biomasa del megazoobentos del golfo de Batabanó, Cuba, e implicaciones para la langosta, Panulirus argus (Decapoda: Palinuridae)
- Author
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Lopeztegui Castillo, Alexander and Martínez Coello, Diana
- Published
- 2020
8. El inglés en las revistas de impacto ¿un alentador intento de unificar o una excusa para marginar?
- Author
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Lopeztegui Castillo, Alexander, Zavala García, Elizabeth M., Lopeztegui Castillo, Alexander, and Zavala García, Elizabeth M.
- Abstract
Actually, there is a current trend to unify criteria of form making understandable and comparable the scientific results at an international level. Nevertheless, it is true that the desire to impose a single language on scientific publications could constitute a limiting dogma. This manuscript aimed to present criteria favoring all researchers who do not produce science in English language. The lists of journals indexed in the Journal Citation Report 2022, which include 12,828 scientific journals, 6,691 social science journals, 3,092 arts and humanities journals, and 5,300 open access journals, were analyzed. It was found that less than 1% of the reviewed lists correspond to journals that publish works in Spanish. Although the importance of English for the development, teaching and dissemination of science is generally recognized, most of the consulted bibliography exposes the dictatorial nature of English in science, where 95% of the articles are published in that language, and only less than 1% in Spanish or Portuguese. Specifically on marine biology, which constituted the aim of this text, the number of "high impact" scientific journals that accept papers in Spanish, or any other language that is not English, is fewer than ever. Publishing only in English implicitly grants the right of universalization to only one language, which could be wrong., Aunque es cierto que no está desacertada la tendencia de unificar criterios de forma con vistas a hacer comprensibles y comparables los resultados científicos a nivel internacional, es también cierto que constituye un dogma limitante el deseo de imponer un solo idioma a las publicaciones científicas. El objetivo de este texto es exponer criterios en favor de todos aquellos investigadores que no producen ciencia en idioma inglés. Se analizaron las listas de revistas indexadas en el Journal Citation Report 2022, que incluyen 12.828 revistas científicas, 6.691 revistas de ciencias sociales, 3.092 revistas de arte y humanidades, y 5.300 revistas de acceso abierto. Se encontró que menos del 1% de las listas revisadas corresponde a revistas que publican trabajos en lengua española. Aunque de manera general se reconoce la importancia del inglés para el desarrollo, la enseñanza y la difusión de la ciencia, la mayoría de la bibliografía consultada expone el carácter dictatorial del inglés en la ciencia, donde el 95% de los artículos se publica en esa lengua y solo menos del 1% en español o portugués. Específicamente en la temática de la biología marina, que constituyó el objeto fundamental de este texto, cada vez son menos las revistas científicas “de alto impacto” que aceptan trabajos en idioma español, o cualquier otro idioma que no sea inglés. Publicar sólo en inglés implícitamente le confiere el derecho de la universalización sólo a un idioma, lo cual puede ser errado.
- Published
- 2023
9. Tasa de depredación de Panulirus argus (Decapoda: Palinuridae) sobre moluscos gastrópodos en dos zonas pesqueras al sur de Cuba
- Author
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Martínez-Coello, Diana, primary, Lopeztegui-Castillo, Alexander, additional, and Amador-Marrero, Ulises, additional
- Published
- 2022
- Full Text
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10. Congruencia y respuesta a factores ambientales de diferentes métricas de biodiversidad en el golfo de Batabanó, Cuba
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Capetillo-Piñar, Norberto, primary, Lopeztegui-Castillo, Alexander, additional, Betanzos-Vega, Abel, additional, Tripp-Quezada, Arturo, additional, Zetina-Rejón, Manuel Jesús, additional, and Hernández-Padilla, Juan Carlos, additional
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- 2022
- Full Text
- View/download PDF
11. El inglés en las revistas de impacto ¿un alentador intento de unificar o una excusa para marginar?
- Author
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Lopeztegui-Castillo, Alexander and Zavala-García, Elizabeth M.
- Subjects
DISCRIMINATORY language ,MARINE sciences ,SPANISH language - Abstract
Copyright of Revista Colombiana de Ciencia Animal - RECIA is the property of Revista Colombiana de Ciencia Animal - RECIA and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
- Published
- 2023
- Full Text
- View/download PDF
12. Tasa de depredación de Panulirus argus (Decapoda Palinuridae) sobre moluscos gastrópodos en dos zonas pesqueras al sur de Cuba
- Author
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Martínez Coello, Diana, Lopeztegui Castillo, Alexander, Amador-Marrero, Ulises, Martínez Coello, Diana, Lopeztegui Castillo, Alexander, and Amador-Marrero, Ulises
- Abstract
The meso-predator Panulirus argus has an impact on the populations of benthic mollusks that constitute its food. In the present study, composition of P. argus diet and predation pressure exerted on gastropods population from Santa Cruz del Sur (SCrso) and Gulf of Batabanó (GB) fishing regions, Cuba, were determined. Gastropod density and diversity were quantified by trawling, which based on the abundance of lobsters reported for each region, served to estimate the impact of predation on gastropod community. 250 lobsters were captured: 62 from SCrso in October 2012, 136 from GB in February 2014 and 52 from GB in July 2018. The void was similar in SCrso (38.7%) and GB (38.0%). Thirteen trophic categories were recorded, the most frequent: operculums (48.8%), crustacean remains (48.0%), shell remains (47.2%) and plant remains (35.0%), showing that the diet is mainly composed of mollusks and crustaceans. The frequency of occurrence of plant remains suggests non-accidental consumption. Seventeen species of mollusks were identified, being Tegula fasciata, Phrontis antillarum, Aliger gigas, Turbo castanea and Chione cancellata the most frequent. The most predated species were T. fasciata (3.36), P. antillarum (0.54) and A. gigas (0.45). Predation pressure was 0.92 gastropods lobster-1 in SCrso and 3.31 gastropods lobster-1 in GB, which according to the respective densities of lobsters (3,546 lobsters km-2 and 3,837 lobsters km-2) and gastropods (3.76 ind. m-2 and 1.45 ind. m-2), allowed estimating that lobsters consume 0.087% of the gastropod community in SCrso and 0.887% in GB. Evidence of cannibalism was also found., Resumen: La langosta espinosa Panulirus argus es un mesodepredador que tiene un impacto en las poblaciones de moluscos bentónicos que constituyen su alimento. En el presente estudio, se determinó la composición de la dieta de P. argus y la presión de depredación que ejerce sobre los gastrópodos de las regiones pesqueras Santa Cruz del Sur (SCrso) y golfo de Batabanó (GB), Cuba. Mediante arrastres se cuantificó la densidad y diversidad de gastrópodos, que, basado en la abundancia de langostas, sirvió para estimar el impacto de la depredación. Se capturaron 250 langostas: 62 en SCrso octubre 2012, 136 en el GB febrero 2014 y 52 en el GB julio 2018. La vacuidad fue similar en SCrso (38,7%) y en el GB (38,0%). Se registraron 13 categorías tróficas, las más frecuentes: opérculos (48,8%) y restos de crustáceos (48,0%), de conchas (47,2%) y vegetales (35,0%), demostrando que la dieta se compone principalmente de moluscos y crustáceos. La frecuencia de ocurrencia de vegetales sugiere consumo no accidental. Se identificaron 17 especies de moluscos, siendo Tegula fasciata, Phrontis antillarum, Aliger gigas, Turbo castanea y Chione cancellata las más frecuentes. La mayor tasa de depredación fue sobre las especies T. fasciata (3,36), P. antillarum (0,54) y A. gigas (0,45). La presión de depredación fue 0,92 gastrópodos langosta-1 en SCrso y 3,31 gastrópodos langosta-1 en el GB, lo que según las respectivas densidades de langostas (3.546 langostas km-2 y 3.837 langostas km-2) y gastrópodos (3,76 ind. m-2 y 1,45 ind. m-2), demostró que P. argus consume 0,087% de los gastrópodos en SCrso y 0,887% en el GB. Se encontraron además evidencias de canibalismo.
- Published
- 2022
13. Assessment of nutritional condition in crustaceans: a review of methodologies and guidelines for applying inexpensive and wide-ranging indices to the spiny lobster Panulirus argus (Latreille, 1804) (Decapoda: Achelata: Palinuridae)
- Author
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Lopeztegui-Castillo, Alexander, primary
- Published
- 2021
- Full Text
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14. Spatial and temporal patterns of the nonnative green mussel Perna viridis in Cienfuegos Bay, Cuba
- Author
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Lopeztegui-Castillo, Alexander, Baker, Shirley M., Garces-Rodriguez, Yuliesky, Castelo-Baez, Roberto, Castro-Grana, Ninieska, and Artiles-Valor, Adriana
- Subjects
Mussels -- Distribution ,Animal populations -- Distribution ,Population biology -- Research ,Zoological research ,Company distribution practices ,Biological sciences ,Zoology and wildlife conservation - Abstract
ABSTRACT The green mussel Perna viridis (Linnaeus 1758), a native of the Indo-Pacific, has been introduced to the Atlantic basin and Caribbean Sea. It was reported first in Cienfuegos Bay, [...]
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- 2014
- Full Text
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15. Reclutamiento de corales petreos en arrecifes coralinos a diferentes distancias de fuentes de contaminacion en La Habana, Cuba
- Author
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Alcolado-Prieto, Pedro, Caballero Aragón, Hansel, Alcolado, Pedro M., and Lopeztegui Castillo, Alexander
- Published
- 2012
16. Variaciones en la condicion nutricional de langostas Panulirus argus (Decapoda: Palinuridae) en la region este del Golfo de Batabano, Cuba
- Author
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Lopeztegui Castillo, Alexander, Capetillo Piñar, Norberto, and Betanzos Vega, Abel
- Published
- 2012
17. 35 years of change in megazoobenthos abundance and biomass in the Gulf of Batabanó, Cuba, and implications for the lobster, Panulirus argus (Decapoda: Palinuridae)
- Author
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Lopeztegui-Castillo, Alexander and Martínez-Coello, Diana
- Subjects
langosta espinosa ,soft bottoms ,fondos blandos ,Disponibilidad de alimento ,bentos ,food availability ,benthos ,mollusks ,spiny lobster ,moluscos - Abstract
Resumen Introducción: El bentos constituye un eficiente indicador de disturbios ambientales, de biodiversidad y de dinámica trófica. En Cuba, los moluscos bentónicos han sido reportados como el principal alimento de la langosta Panulirus argus. Objetivos: Estimar variaciones espacio-temporales en la comunidad bentónica de fondos blandos del golfo de Batabanó, e inferir, haciendo énfasis en los moluscos, el efecto de tales variaciones en la disponibilidad de alimento para las langostas. Métodos: Se realizó un análisis histórico de las variaciones en la densidad y biomasa de megazoobentos (organismos ≥ 4 mm) y particularmente de moluscos megazoobentónicos, tomando como referencia los estudios realizados desde 1990 (muestreos del año 1983) y datos actuales (2007-2018) registrados in situ mediante metodologías comparables. Resultados: Se encontró que tanto la densidad como la biomasa eran significativamente mayores al final del pasado siglo y muestran tendencia a disminuir gradualmente hacia la actualidad. Respecto a los valores reportados en 1983, la densidad de organismos mostró un decrecimiento del 73 %, sin embargo, la biomasa experimentó una disminución aún mayor (86 %). Las áreas de mayor densidad y biomasa, tanto de bentos como de moluscos, han variado respecto a lo reportado para 1983 y actualmente se ubican hacia el centro del golfo. A pesar de ello, los bivalvos continúan estando mejor representados que los gastrópodos. En general, los moluscos mostraron un significativo decrecimiento (55 % y 88 % respectivamente). Conclusiones: Se corroboró el deterioro de la comunidad bentónica en las áreas pesqueras del golfo de Batabanó y se demostró, basado en el megazoobentos, que la malacofauna puede utilizarse como un indicador fiable de los parámetros generales de la comunidad bentónica de fondos blandos. Se estimó que la disponibilidad de alimento para las langostas ha disminuido en un 55.6 % respecto a 1983, lo cual, unido a las variaciones espaciales del megazoobentos, puede contribuir a explicar los actuales cambios en la abundancia y distribución de las langostas. Abstract Introduction: Benthos is an efficient indicator of environmental disturbances, biodiversity and trophic dynamics. In Cuba, benthic mollusks have been reported as the main food for the lobster Panulirus argus. Objectives: To estimate spatio-temporal variations in the soft-bottom benthic community of the Gulf of Batabanó, and to infer, with emphasis on mollusks, the effect of such variations on the availability of food for spiny lobsters. Methods: A historical analysis of the variations in the density and biomass of megazoobenthos (organisms ≥ 4 mm) and particularly of megazoobenthic mollusks was carried out, taking as a reference the studies published in 1990 (with samples from 1983) and recent data (2007-2018) recorded on site using comparable methodologies based on sediment drags. Abundance was given as density (ind/m2) and biomass in g/m2. Results: It was found that both the density and the biomass were significantly higher at the end of the last century and show a tendency to gradually decrease towards recent times. Regarding the values reported in 1983, the density of organisms showed a decrease of 73 %, however, the biomass experienced an even greater decrease (86 %). The areas with the highest density and biomass, both benthos and mollusks, have varied from 1983 and are currently located towards the center of the gulf. Despite this, bivalves continue to be better represented than gastropods. In general, mollusks showed a significant decrease (55 % and 88 % respectively). Conclusions: The deterioration of the benthic community in the fishing areas of the Gulf of Batabanó was corroborated and it was demonstrated, based on megazoobenthos, that malacofauna can be used as a reliable indicator of the general parameters of the soft-bottom benthic community. The availability of food for lobsters have decreased 55.6 % compared to 1983. This could help to explain the current changes in the abundance, distribution and nutritional condition of lobsters, which could also be related to the recent megazoobenthos variations.
- Published
- 2020
18. Influence of Environmental Factors on Nutritional Condition of Spiny Lobster Panulirus argus(Decapoda: Palinuridae)
- Author
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Lopeztegui-Castillo, Alexander, Olivera-Espinosa, Yunier, and Abitia-Cárdenas, Leonardo Andres
- Abstract
Environmental influence on lobster’s physiology is a topic little addressed around the world. We determined the impact of biotic (food availability) and abiotic (temperature, salinity, and dissolved oxygen) environmental factors on nutritional condition of Panulirus argus(Latreille, 1804) from the Caibarien fishing region, Cuba. Eleven sites were sampled from 2010 to 2015, during dry and rainy seasons. Blood Refractive Index (BRI) and Kcl (total weight/carapace length) were used as nutritional condition indicators. Benthic food availability index (BFAI) was also determined. BRI and Kcl were both correlated with BFAI and varied significantly among sites and years. Salinity showed interannual differences, with lowest value in 2013. BFAI gradually increased between 2010 and 2015. Generalized Additive Model (GAM) for Kcl was 84.8% deviance explained (R2= 77.6%), showing an environmental important influence on lobster’s nutritional condition. “Site”, dissolved oxygen, and BFAI had significant impacts on Kcl. GAM for BRI was 34.6% deviance explained (R2= 25.3%), only salinity significantly impacted lobster’s blood parameters. Environmental influence in lobster’s nutritional condition was multifactorial and included biotic and abiotic variables. Food availability makes vary BRI and Kcl, nevertheless, they are both sensitive in different way to environmental factors and should have different interpretation.
- Published
- 2023
- Full Text
- View/download PDF
19. Parámetros meteorológicos, represamiento fluvial y huracanes. Variaciones en la hidrología del golfo de Batabanó, Cuba
- Author
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Betanzos-Vega, Abel, Capetillo-Piñar, Norberto, Lopeztegui-Castillo, Alexander, Garcés-Rodríguez, Yuliesky, and Tripp-Quezada, Arturo
- Subjects
hidrometeorología ,space-time variation ,Plataforma suroccidental ,variación espacio-temporal ,Southwestern platform ,hydrometeorology - Abstract
Resumen: El golfo de Batabanó (GB), es la región de la plataforma marina cubana de mayor extensión e importancia pesquera. Afectaciones al hábitat de especies marinas han sido señaladas como consecuencia de factores naturales y antrópicos. El objetivo fue determinar variaciones espacio-temporales significativas en la hidrología del GB en diferentes periodos y situaciones ambientales. Para ello se analizó la variabilidad de la lluvia y la temperatura del aire en 1975-1995 y 1996-2015 periodos de baja y alta actividad ciclónica, las características termohalinas del GB anterior (1959-1970) y posterior (2006-2016) al represamiento fluvial, y el efecto de dos huracanes casi simultaneaos en 2008 (“Gustav” e “Ike”). Diferencias significativas en la variabilidad interanual de parámetros meteorológicos entre el norte y el sur del GB respondieron a características locales, y ocurrieron cambios en la distribución de los meses de máximas precipitaciones. El represamiento fluvial, sumado a déficits de precipitación en primavera, verano e invierno, provocaron aumentos termohalinos en 2006-2016, con incremento de 0,7 °C en la temperatura del agua y de 2,3 en la salinidad promedio del GB, respecto a 1959-1970. La salinidad mostró una ampliación en la distribución de valores hipersalinos, y media > 36 en meses de altas precipitaciones, con promedio general de 35,4 en 1959-1970 y 37,7 en 2006-2016, esto sugiere que el represamiento ha sido un factor principal en las variaciones de salinidad. El impacto termohalino en el GB de dos huracanes en 2008, se restableció en corto plazo, con mayor inercia en la turbidez. Abstract: The Gulf of Batabanó (GB), is the region of the Cuban marine platform of greater extension and fishing importance. Habitat effects of marine species have been reported as a consequence of natural and anthropic factors. The objective was to determine significant spatio-temporal variations in the hydrology of GB in different periods and environmental situations. For this, the variability of rainfall and air temperature was analyzed in 1975-1995 and 1996-2015 periods of low and high cyclonic activity, the thermohaline characteristics of the GB before (1959-1970) and after (2006-2016) the river damming, and the effect of two hurricanes almost simultaneous in 2008 ("Gustav" and "Ike"). Significant differences in the interannual variability of meteorological parameters between the north and south of the GB corresponded to local characteristics, and changes occurred in the distribution of the months of maximum rainfall. The perennial impact of the damming, coupled with temporary precipitation deficits in spring, summer and winter, caused thermohaline increases in 2006-2016, with an increase of 0.7 °C in water temperature and 2.3 in average salinity of the GB, with respect to 1959-1970. Salinity showed an increase in the distribution of hypersaline values, and an average > 36 in months of high rainfall, with a general average of 35.4 in 1959 -1970 and 37.7 in 2006-2016, this suggests that damming has been a major factor in the increase in salinity. The thermohaline impact in the GB of two hurricanes in 2008 was restored in the short term, with greater inertia in turbidity.
- Published
- 2019
20. Parámetros meteorológicos, represamiento fluvial y huracanes. Variaciones en la hidrología del golfo de Batabanó, Cuba
- Author
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Betanzos-Vega, Abel, primary, Capetillo-Piñar, Norberto, additional, Lopeztegui-Castillo, Alexander, additional, Garcés-Rodríguez, Yuliesky, additional, and Tripp-Quezada, Arturo, additional
- Published
- 2020
- Full Text
- View/download PDF
21. IMPACTO DEL CULTIVO DE COBIA (RACHYCENTRUM CANADUM) SOBRE LAS COMUNIDADES BIOLÓGICAS DEL OESTE DE BAHÍA DE COCHINOS, CUBA
- Author
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Lopeztegui Castillo, Alexander and Lopeztegui Castillo, Alexander
- Abstract
Con el objetivo de inferir el nivel de impacto del cultivo experimental de cobia (Rachycentrum canadum) en Bahía de Cochinos, se estimó el estado general de las comunidades biológicas tras un año de comenzada la experiencia (2014-2015). En transeptos de banda (100x2=200m2) se muestrearon las comunidades bentónicas arrecifales y los peces de fondo, en transeptos circulares los peces pelágicos.Además de los corales (densidad, composición por especies y blanqueamiento), se incluyó el porcentaje de sustrato cubierto por sedimento, macroalgas y cianobacterias.Tanto en 2014 como en 2015, el género más reportado fue Agaricia (cincoespecies) y las colonias más frecuentes fueron de Siderastrea siderea. Otros géneros abundantes fueron Orbicella-Montastraea (cuatro especies) y Mycetophyllia (cinco especies). La densidad de corales en 2015 resultó similar a la encontrada en 2014.La cobertura vegetal se incrementó ligeramente hacia los transeptos menos profundos (escala espacial) y hacia 2015 (escala temporal) aunque no se detectaron diferencias significativas. Los géneros mejor representados fueron Halimeda, Penicillus, Rhipocephalus, Udotea y Dictyota. La presencia de cianobacterias no presentó diferencias entre años, sin embargo, la incidencia de blanqueamiento se incrementósignificativamente para 2015. La abundancia y diversidad de peces se elevaron en 2015 (S=30; N=845) respecto a 2014 (S=21; N=161), lo cual sugiere que la actividad de cultivo influye positivamente en la ictiofauna del lugar. El estado de las comunidades bentónicas arrecifales no refleja un elevado nivel de estrés, se infiere entonces que el impacto de la actividad de cultivo no es considerable.
- Published
- 2019
22. Parámetros meteorológicos, represamiento fluvial y huracanes. Variaciones en la hidrología del golfo de Batabanó, Cuba
- Author
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Betanzos Vega, Abel, Capetillo Piñar, Norberto, Lopeztegui Castillo, Alexander, Garcés Rodríguez, Yuliesky, Tripp-Quezada, Arturo, Betanzos Vega, Abel, Capetillo Piñar, Norberto, Lopeztegui Castillo, Alexander, Garcés Rodríguez, Yuliesky, and Tripp-Quezada, Arturo
- Abstract
El golfo de Batabanó (GB), es la región de la plataforma marina cubana de mayor extensión e importancia pesquera. Afectaciones al hábitat de especies marinas han sido señaladas como consecuencia de factores naturales y antrópicos. El objetivo fue determinar variaciones espacio-temporales significativas en la hidrología del GB en diferentes periodos y situaciones ambientales. Para ello se analizó la variabilidad de la lluvia y la temperatura del aire en 1975-1995 y 1996-2015 periodos de baja y alta actividad ciclónica, las características termohalinas del GB anterior (1959-1970) y posterior (2006-2016) al represamiento fluvial, y el efecto de dos huracanes casi simultaneaos en 2008 (“Gustav” e “Ike”). Diferencias significativas en la variabilidad interanual de parámetros meteorológicos entre el norte y el sur del GB respondieron a características locales, y ocurrieron cambios en la distribución de los meses de máximas precipitaciones. El represamiento fluvial, sumado a déficits de precipitación en primavera, verano e invierno, provocaron aumentos termohalinos en 2006-2016, con incremento de 0,7 °C en la temperatura del agua y de 2,3 en la salinidad promedio del GB, respecto a 1959-1970. La salinidad mostró una ampliación en la distribución de valores hipersalinos, y media > 36 en meses de altas precipitaciones, con promedio general de 35,4 en 1959-1970 y 37,7 en 2006-2016, esto sugiere que el represamiento ha sido un factor principal en las variaciones de salinidad. El impacto termohalino en el GB de dos huracanes en 2008, se restableció en corto plazo, con mayor inercia en la turbidez., The Gulf of Batabanó (GB), is the region of the Cuban marine platform of greater extension and fishing importance. Habitat effects of marine species have been reported as a consequence of natural and anthropic factors. The objective was to determine significant spatio-temporal variations in the hydrology of GB in different periods and environmental situations. For this, the variability of rainfall and air temperature was analyzed in 1975-1995 and 1996-2015 periods of low and high cyclonic activity, the thermohaline characteristics of the GB before (1959-1970) and after (2006-2016) the river damming, and the effect of two hurricanes almost simultaneous in 2008 ("Gustav" and "Ike"). Significant differences in the interannual variability of meteorological parameters between the north and south of the GB corresponded to local characteristics, and changes occurred in the distribution of the months of maximum rainfall. The perennial impact of the damming, coupled with temporary precipitation deficits in spring, summer and winter, caused thermohaline increases in 2006-2016, with an increase of 0.7 °C in water temperature and 2.3 in average salinity of the GB, with respect to 1959-1970. Salinity showed an increase in the distribution of hypersaline values, and an average > 36 in months of high rainfall, with a general average of 35.4 in 1959 -1970 and 37.7 in 2006-2016, this suggests that damming has been a major factor in the increase in salinity. The thermohaline impact in the GB of two hurricanes in 2008 was restored in the short term, with greater inertia in turbidity.
- Published
- 2019
23. ABUNDANCIA Y TALLA DE ESPONJAS COMERCIALES (SPONGIIDAE) EN EL GOLFO DE BATABANÓ, CUBA: ACTUALIZACIÓN Y RECOMENDACIONES DE MANEJO.
- Author
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Lopeztegui-Castillo, Alexander, Betanzos-Vega, Abel, and Formoso-García, Mario
- Abstract
Commercial sponge catches in Cuba show decreases that require maintaining a precautionary approach and ensuring strict compliance with regulatory measures. This study aims to determine variations in abundance, size and quality of commercial sponges in the Gulf of Batabanó, during the 2015-2019 period, and to propose fishing management measures that favor this resource sustainability. Sponges density was estimated in 2x100 m (200 m2) transects. The fishing potential, expressed in metric tons, was calculated from the average density of individuals. The catch quota was calculated based on 15% of the fishing potential. The most represented species were Spongia obscura and S. barbara. The densities found (between 0.01 and 0.03 ind/m2) were low, but correspond to those reported at the end of the last decade, which corroborates the stabilization of catches (average annual quota of 18.7 metric tons) and demonstrates the effectiveness of the current fishing management. However, the density and size show a tendency to decrease between 2015 and 2019. This, together with the decrease in the abundance of Hippospongia lachne, the presence of totally or partially dead sponges and the poor quality of some specimens, suggests the deterioration of the fishing stock. Based on the habitat affectations reported for this region, it is recommended to reduce the annual quota to 10% of the fishing potential, not to extract specimens smaller than 15 cm in diameter and to implement sponge aquaculture again. [ABSTRACT FROM AUTHOR]
- Published
- 2020
24. Diferencias entre sexos en la composición de la dieta natural de la langosta Panulirus argus (Decapoda: Palinuridae) al este del golfo de Batabanó, Cuba
- Author
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Martínez Coello, Diana, Lopeztegui Castillo, Alexander, and Amador Marrero, Ulises
- Subjects
contenido estomacal ,lobsters ,Cuba ,langostas ,stomach contents ,Golfo de Batabanó ,Gulf of Batabano ,Panulirus argus - Abstract
Resumen Con el objetivo de identificar los organismos que conforman la dieta natural de la langosta Panulirus argus y determinar diferencias entre sexos en cuanto a la importancia de cada presa, se analizaron 30 estómagos con contenido (16 hembras y 14 machos), extraídos de langostas capturadas al Este del golfo de Batabanó. Se identificaron 15 entidades alimentarias (12 en las hembras y 14 en los machos). Las entidades preferenciales coincidieron en ambos sexos, aunque en los machos se incluyeron además los foraminíferos y los restos minerales. Los crustáceos fueron el único grupo de importancia alta y son las presas mayormente consumidas (G=62.3% en las hembras y G=40% en los machos). Se determinó la presencia de opérculos de Lobatus gigas, Turbo castanea, Fasciolaria tulipa, Nassarius antillarum,Cerithium spy Tegula fasciata, que fue la que mostró mayor presión de depredación (2.25 en las hembras y 2.14 en los machos). Esta especie junto a Cerithium sp. fueron las que presentaron mayor abundancia numérica (60.5% y 33.9% respectivamente). La prueba U de Mann-Whitney arrojó que entre sexos no existen diferencias en el peso del contenido estomacal. La similaridad entre las dietas fue de 96.75% y se compone fundamentalmente de crustáceos y moluscos. AbstractSex differences in the composition of the natural diet of Panulirus argus (Decapoda: Palinuridae) in the eastern of the Gulf of Batabano, Cuba. The spiny lobster Panulirus argus is one of the most valuable fishery resources in the Caribbean Sea. This is the only species of lobster that has commercial importance in Cuba. This study was aimed to identify the organisms that conform the natural diet for both sexes of P. argus and to determine the importance of each prey in the diet of each sex. A total of 30 stomachs of commercial lobsters (≥ 76mm of carapace length) was analyzed. The identified content was grouping by items and classified for species if it was possible. The total weight of each item was determined and the gravimetric method was applied to estimate the relative weight of the principal diet components. The most frequently consumed prey was also determined. Items with high, middle or low importance were established by the relative importance index (IIR). Similarities between both sexes diet were estimated by similarity index (ISe). Stomachs were extracted of lobsters captured in a fishing zones from eastern of the gulf of Batabano. The predation pressure (P) on the mollusks species found in the stomach content was calculated based on the respective opercula. It was possible to identified 15 feeding entities (12 in females and 14 in the males) being the preferences: crustacean rests (100%), shell rests (80%), vegetable rests (70%), opercula (63%) and mineral rests (53%). Those preference entities were the same between sexes although in the males the foraminifera and the mineral rest were included. The IIR showed crustaceans as a single group of high importance. The gravimetric analysis showed crustaceans as the most consumed prey (62.3% in females and 40% in males). The opercula of Lobatus gigas, Turbo castanea, Fasciolaria tulipa, Nassarius antillarum, Cerithium sp and Tegula fasciata were found. Tegula fasciata showed the highest predation pressure (2.25 in females and 2.14 in males) and together Cerithium sp. they were the most abundant species (60.5% and 33.9% respectively). Respect to the weight of stomach contents the Mann-Whitney test showed no significant difference between females and males. The diet of both sexes of P. argus in the assessed area was similar (ISe=96.75%) and it was constituted mainly of crustaceans and mollusks.
- Published
- 2015
25. Methodology selection for determining nutritional condition in lobsters Panulirus argus (Decapoda: Palinuridae) in Cuba
- Author
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Lopeztegui Castillo, Alexander and Amador Marrero, Ulises
- Subjects
nutritional status ,estado nutricional ,metodología no destructiva ,langosta ,methodology ,lobster ,nondestructive ,Panulirus argus - Abstract
El objetivo de este estudio fue determinar, mediante el análisis comparativo de los resultados, la metodología no destructiva más adecuada para estimar la condición nutricional de la langosta Panulirus argus en Cuba. Los indicadores evaluados fueron: índice de refracción de la hemolinfa (IRH) y cuatro expresiones de la relación peso total-largo (KLt, KLc, KLc³ y Klog). Las muestras se tomaron de las capturas comerciales de dos zonas: Golfo de Batabanó y Archipiélago Sabana-Camagüey. Los indicadores calculados fueron correlacionados entre sí y con el peso total (Pt) mediante el coeficiente de Spearman, y fueron comparados entre zonas y sexos mediante la prueba Kruskal-Wallis. Se efectuó además la regresión de cada indicador respecto al Pt. El IRH presentó la menor asociación y dependencia con el Pt, y parece reflejar mejor la condición nutricional al momento del muestreo. Los indicadores Klog y KLc³ tuvieron bajas correlaciones y regresiones, y presentaron resultados ambiguos al comparar entre zonas y sexos. El estimador KLt resultó el más adecuado por la alta correlación y regresión con el Pt, seguido por KLc. La mayoría de los indicadores mostraron una condición nutricional mayor en el golfo, área sometida a menor impacto antrópico y con mejor estado de los pastos marinos y las comunidades zoobentónicas asociadas, que constituyen alimento potencial para las langostas. En ambas zonas los indicadores morfométricos (KLt, KLc, KLc³ y Klog) mostraron mayor condición nutricional en los machos. El estimador IRH no detectó diferencias entre sexos por lo que éstas pudieran deberse al dimorfismo sexual. The aim of this study was to determine which nondestructive methodology is more adequate for estimating nutritional state of the lobsters Panulirus argus in Cuba. The indicators evaluated were Blood Refractive Index (BRI) and four different expressions of the total weight-length rate (KLt, KLc, KLc³ and Klog). The analyzed commercial lobsters came from two areas: Gulf of Batabano and Archipelago Sabana-Camagüey. The Spearman Coefficient correlated the calculated indicators among them. In addition, those indicators were compared between zones and sexes applying the Kruskal-Wallis test. Regression analysis were applied among each indicator and the total weight (Pt). The BRI presented the smallest association and dependence with Pt, it seems to be more related with changes on animals at sampling moment. Klog and KLc³ did not have a high value of correlation or regression and shown ambiguous result when comparing between sex and zone. Based on the high correlation and regression coefficients with Pt, the most appropriate indicator was KLt; followed by KLc. Most of the indicators showed that nutritional condition was significantly greater for lobsters in the gulf. The anthropogenic impact is lower in this area and then the seagrasses could have a better state, likewise the benthic communities (that constitute potential food for lobsters). Most of the morphometric indicators detected significant differences between sexes, being the greater value for males. On the contrary, the analytic index BRI did not detect these differences, which could be due to the sexual dimorphism that exists in this species.
- Published
- 2015
26. Fauna asociada a colectores artificialesde puérulos de langosta Panulirus argus (Decapoda: Palinuridae) en Cuba
- Author
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Lopeztegui Castillo, Alexander, Cuellar Peña, Ramón, Amador Marrero, Ulises, Lopeztegui Castillo, Alexander, Cuellar Peña, Ramón, and Amador Marrero, Ulises
- Abstract
Se determinó la composición de la fauna asociada a las post-larvas de langosta Panulirus argus en colectores artificiales. Se elaboró una lista con los macrogrupos encontrados y la respectiva especies o géneros, incluyendo su frecuencia de aparición. La abundancia se expresó en número de organismos y la biomasa se determinó mediante el peso húmedo (g). La comparación entre medias se realizó mediante un análisis de varianza unifactorial, aplicando la prueba HSD de Tukey para detectar diferencias entre pares. La abundancia y biomasa de fauna asociada se correlacionó con la de post-larvas mediante el coeficiente de Pearson (r). Se recolectaron 714 organismos asociados a los colectores y se identificaron 10 grupos zoológicos, siendo Brachyura, Palinuridae y Osteichthyes los mejor representados. Las especies más frecuentes fueron Abude- fduf saxatilis (Osteichthyes) y Pachygrapsus transversus (Brachyura). En la escala temporal no se detectaron diferencias significativas en abundancia o biomasa. En la escala espacial, las variaciones en abundancia y biomasa mostraron similares tendencias pero sólo para esta última resultaron significativas (p=0,003), siendo mayor el número de organismos en el colector dos. La correlación entre la abundancia de post-larvas y de fauna asociada fue de r=- 0,02 (p=0,923); en el caso de la biomasa la correlación fue de r=-0,40 (p=0,144). Estas tendencias negativas sugieren que en alguna medida los organismos que se asocian a los colectores limitan el asentamiento y desarrollo de los puérulos; sin embargo, el hecho de que no resultaran significativas implica que esta limitante no resultó considerable. Â
- Published
- 2016
27. Sex differences in the composition of the natural diet of Panulirus argus (Decapoda: Palinuridae) in the eastern of the Gulf of Batabano, Cuba
- Author
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Martínez Coello, Diana, primary, Lopeztegui Castillo, Alexander, additional, and Amor Marrero, Ulises, additional
- Published
- 2015
- Full Text
- View/download PDF
28. Spatial and Temporal Patterns of the Nonnative Green MusselPerna Viridisin Cienfuegos Bay, Cuba
- Author
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Lopeztegui-Castillo, Alexander, primary, Baker, Shirley M., additional, Garcés-Rodríguez, Yuliesky, additional, Castelo-báez, Roberto, additional, Castro-Graña, Ninieska, additional, and Artiles-Valor, Adriana, additional
- Published
- 2014
- Full Text
- View/download PDF
29. El ciclo lunar y las capturas de langosta Panulirus argus (Decapoda: Palinuridae) en la zona de Caibarién, Cuba
- Author
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Lopeztegui Castillo, Alexander, Capetillo Piñar, Norberto, Baisre ílvarez, Julio, Lopeztegui Castillo, Alexander, Capetillo Piñar, Norberto, and Baisre ílvarez, Julio
- Abstract
El incremento del esfuerzo pesquero en aquellos períodos lunares en que las langostas son más vulnerables a las artes de pesca, ha sido una estrategia eficiente para aumentar la rentabilidad de las pesquerías. En la presente investigación se determinó la relación entre el ciclo lunar y las capturas de langosta Panulirus argus en la zona de Caibarién, Cuba. La información acerca del ciclo lunar se organizó tanto por fases (Luna Nueva, Cuarto Creciente, Luna Llena y Cuarto Menguante) como asumiendo una distribución continua de los días de este ciclo. Los análisis se realizaron en el período 2002-2004, durante seis meses lunares cada año (junio-noviembre). Se utilizó la captura diaria por barco (CDB) como medida del volumen diario de captura. La CDB por fase lunar se comparó mediante la prueba de Kruskal-Wallis, y se aplicó además la técnica de correlaciones cruzadas. No se detectaron diferencias significativas entre la CDB por fase lunar. El análisis de correlación cruzada permitió detectar significación sólo para el año 2004, lo cual originó que para todo el período de estudio también se detectara significación. No obstante, los coeficientes de correlación cruzada presentaron, en ambos casos, valores notablemente bajos. A diferencia de lo señalado para otras regiones del mundo, se concluye que en la zona de Caibarién, Cuba, no existe una correlación significativa entre las capturas de langosta P. argus y el ciclo lunar, lo que sugiere que en esta zona las langostas son igualmente vulnerables a la pesquería en cualquier fase de este ciclo.
- Published
- 2012
30. Macrozoobentos como Estimador del Potencial Alimentario para la Langosta Espinosa (Panulirus Argus) en Tres Zonas al Sur de Pinar del Río, Cuba
- Author
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Lopeztegui Castillo, Alexander, Capetillo Piñar, Norberto, Lopeztegui Castillo, Alexander, and Capetillo Piñar, Norberto
- Abstract
Por la importancia que tienen las comunidades bentónicas en las tramas tróficas, y porque algunos de los componentes del bentos forman parte de la dieta de la langosta espinosa (Panulirus argus), se efectuó, durante los meses de Julio y Noviembre (2003) y Febrero (2004), la evaluación del macro y algunos elementos del megazoobentos en tres zonas del occidente de Cuba (Bacunagua, Dayanigua y Coloma), al sur de Pinar del Río. Se tomaron las muestras con una draga modelo Ekman de 0,02 m2Â de área efectiva, y se separaron en tamices de 4,0; 1,0 y 0,5 mm de luz de malla. Fueron analizados factores abióticos en agua (temperatura y salinidad) y en sedimento (granulometría). Se registraron en total 1.935 organismos (447,9 org/m2), de los cuales 41,8% fueron poliquetos, 11,2% nemátodos, 4,1% sipuncúlidos, 25,0% moluscos, y 5,3% crustáceos. Bacunagua fue el área de mayor densidad de organismos y grupos representados, y Febrero fue el mes de mayor abundancia de macrozoobentos. Con respecto a años anteriores, las densidades totales de organismos mostraron una disminución del 94,6%. Sólo el 49,1% del macrozoobentos resultó alimento potencial para la langosta espinosa, estimando que éste se encuentra disminuido en un 82,7%. Se detectaron elevadas salinidades en zonas próximas a la costa. Se concluye que el macrozoobentos no presenta un desarrollo satisfactorio en las áreas estudiadas, por lo que el potencial alimentario para P. argus se encuentra considerablemente disminuido
- Published
- 2010
31. MONITOREO REEF CHECK EN EL ARRECIFE CORALINO "RINCÓN DE GUANABO", CUBA.
- Author
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Castellanos Iglesias, Susel, Lopeztegui Castillo, Alexander, and de la Guardia Llansó, Elena
- Subjects
- *
CORAL reef monitoring , *CORALS , *REEFS , *AQUATIC resources - Abstract
The results of the monitoring Reef Check in the coral reef of Rincón de Guanabo protected area during 2000, 2001, 2002 are presented. This survey was carried out to evaluate the coral reef's health, to obtain the basic scientific information for establishing the management plans and to involve the community volunteers in the conservation activities. Fixed stations in 3 and 10 m deep were settled down. Besides the Reef Check monitoring, in the 2002 a 1 m² frame was used so as to analyze the coral species composition and the abundance of sponges and gorgonians. Alive coral cover was superior to 20% in the crest and in the front reef but didn't show variations in the 3 years. Twenty five species of scleractinian corals were identified, and the most abundant were Agaricia agaricites, Porites astreoides, Siderastraea siderea y Montastraea annularis. Coral density was 13.8 col./m², and higher than gorgonians and sponges density. The low density of Diadema urchin and the almost total absence of commercial fish was significant. The results indicated that the coral reef of Rincón de Guanabo is in good health condition, however, there are serious impacts by over fishing that can bear future ecological dysfunctions. Because of this, it is necessary to continue with Reef Check monitoring that will give reliable scientific information to prevent coral reef destruction and will involve local community to the conservation process. [ABSTRACT FROM AUTHOR]
- Published
- 2004
32. Assessment of nutritional condition in crustaceans: a review of methodologies and guidelines for applying inexpensive and wide-ranging indices to the spiny lobster Panulirus argus(Latreille, 1804) (Decapoda: Achelata: Palinuridae)
- Author
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Lopeztegui-Castillo, Alexander
- Abstract
The review explores the current diversity of methods used to determine the nutritional condition of crustaceans and to provide evidence that standardization is needed to make results comparable among the increasing number of studies in this field. The advantages and disadvantages of inexpensive and wide-ranging indices are discussed with respect to the blood refractive index (BRI) and the effectiveness of the total weight/carapace length relationship based on their application to the spiny lobster Panulirus argus(Latreille, 1804). Also reviewed are the environmental factors that impact metabolism based on the nutritional condition concept and the nutritional condition itself. Ocean acidification, temperature, salinity, dissolved oxygen, and noise have been the most studied factors impacting nutritional condition in crustaceans, usually under controlled (laboratory) conditions. Methodological aspect could be nevertheless one of the most important factors affecting nutritional condition estimations. More than twenty methods have been applied to determine nutritional variations in crustaceans, all then following different techniques, procedures, and instrumentation. These differences make results almost impossible to compare. BRI determined by a hand-held refractometer, usually inexpensive, is a good option to standardize studies so that the results from different species and different regions can be comparable; other methodologies could nevertheless be used in combination. Laboratory studies, which typically use few individuals that are exposed to extreme and usually non-natural conditions, show limited results. Emphasis should be placed on field studies that integrate the effects of several environmental factors.
- Published
- 2021
- Full Text
- View/download PDF
33. [Stony coral recruitment in coral reefs at different distances from pollution sources in Habana, Cuba].
- Author
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Alcolado-Prieto P, Caballero Aragón H, Alcolado PM, and Lopeztegui Castillo A
- Subjects
- Animals, Cuba, Population Density, Population Dynamics, Seasons, Anthozoa physiology, Coral Reefs, Environmental Monitoring, Water Pollutants
- Abstract
The effect of pollution on coral recruitment has been insufficiently studied. This research deals with coral recruitment in coastal areas and aimed to determine the variations of density and dominant species of corals recruits in sites at different distances from pollution sources. The composition and structure of stony coral (scleractinian and milleporids) recruit associations were characterized in the fringing reef of Western Havana, Cuba. This reef is influenced by urban pollution from the Almendares River and a sewage outlet located at its mouth. Four sites were sampled on the upper fore reef escarpment at 10m deep every three months between July 2007 and May 2008. A 25cm side quadrat was used to determine the density and taxonomic composition of recruits smaller than 3cm in diameter. Sampling units were placed following a random-systematic pattern. The mean density of recruits was determined both at assemble and species level. Bifactoral ANOVA tests were applied to compare mean densities at both sampling sites and dates. Student-Newman-Keuls test was applied to compare pairs of means. Cluster and nMDS analyses were applied to evaluate between site similarities. The predominant species was Siderastrea siderea followed by S. radians and Porites astreoides. Recruit densities were similar among La Puntilla, Calle 16 and Acuario sites. Lower densities were always found in Malec6n. Significant differences in mean stony recruit densities were found both between sites and sampling dates. The statistic analysis did not show significant spatial-temporal interactions. Malec6n, the most polluted site, showed the lowest recruit density and the greater presence of species considered as indicators of organic pollution, sedimentation and abrasion. The density of recruit species was higher in October 2007 and lower in May 2008, and it was apparently influenced by reproduction and cold front seasons, respectively. The higher dominance and abundance of S. siderea, S. radians and P. astreoides recruits were apparently due to their high reproductive potential and resistance to disturbances. The identity of dominant species was apparently related to distance from major pollution sources. We highly recommended the replication of this research in other areas of the greater Caribbean region to test the generality of present results and to compare among areas. Future research should take into account the influence of other environmental factors, along with an appraisal of recruit species tolerance to these factors, to better ponder the effect of urban pollution on recruitment. Areas with well assessed pollution regimes are recommended for research.
- Published
- 2012
34. [Variations of the nutritional condition of lobsters Panulirus argus (Decapoda: Palinuridae) in Eastern region of the Gulf of Batabanó, Cuba].
- Author
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Lopeztegui Castillo A, Capetillo Piñar N, and Betanzos Vega A
- Subjects
- Animals, Cuba, Female, Male, Animal Nutritional Physiological Phenomena, Ecosystem, Palinuridae growth & development, Seasons
- Abstract
Nutritional condition can affect survival and growth rate of crustaceans, and this is mostly affected by habitat conditions. This study describes the space-temporary nutritional changes in this commercially important species. With this aim, the variations in the nutritional condition (K) of lobsters from four zones (1, 2, 4 and 5) in the Gulf of Batabanó, Cuba, were determined. For this, the weight/length ratio (K=Pt/Lt) was calculated using animals captured in 1981 and 2010. The nutritional condition between areas and sexes, and years and sexes, was contrasted by a bifactorial ANOVA, and the overall length and weight of lobsters were compared using a t-Test for independent samples and unifactorial ANOVA. It was found that the nutritional condition was significantly greater in males than in females. In addition, significant variations between zones were detected for both years. Nutritional condition of lobsters from Zone five was the highest for 1981, while it was Zone two for 2010. Lobsters nutritional state showed significant variations between years, being greater in 1981 (2.34 +/- 0.84g/mm) than in 2010 (1.96 +/- 0.49g/mm). The inter-zones variations as well as the inter-annual ones seem to be related to the reported variations of the bottom type and the vegetation cover. Seasonal variations in the abundance and distribution of benthic organisms, that constitute food for lobsters, could also be influencing. The differences between sexes, however, were assumed as a consequence of the methodology used and the sexual dimorphism of the species. Due to other K estimation methods, that do not include morphometric measurements, these differences were not detected. We suggested that the P. argus nutritional condition is a good estimator of the habitat condition. Besides, according to the applied K estimation methodology, it was found that different groups of lobsters that have resemblant nutritional condition, did not necessarily observe similarities in the overall mean length or weight, so they could exist under different habitat conditions.
- Published
- 2012
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