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2. Subnicho estructural de Parachondria neglectus (Littorinimorpha: Annulariidae) en Manzanillo, Cuba.

Author

Sariego Frómeta, Sandra, Marín Morán, Jorge Erick, Reyes Tur, Bernardo, Castell Puchades, Miguel Ángel, and Sariego Tamayo, Orlando Ramón

Subjects
*STRUCTURAL dynamics, *PLANT species, *CONTINGENCY tables, *ANIMAL-plant relationships, *MOLLUSKS
Abstract

Parachondria neglectus is a terrestrial mollusk endemic of Cuba. This species constitutes the only report of the Annulariidae family in the municipality of Manzanillo, Granma province. In the present study, the temporal dynamics of the structural subniche of a population of P. neglectus was characterized. Thirty expeditions were carried out between December 2013 and February 2015. 83.9 % of the mollusks were found on the ground (around the base of trees and shrubs) and 16.1 % used the trunk of eight plant species as diurnal resting substrate. The test of independence performed using a 2×2 contingency table with Yates correction showed that in the population the frequency of using one substrate or another depends on the occurrence or not of rainfall (X2 = 214.88; P = 0.0001). This species was found at an average trunk distance of 13 ± 6.42 cm. The C-index values indicated marked preference of this mollusk for Swietenia mahagoni during all climatic periods sampled. During the rainy season this species also showed statistically significant preferences for Cordia gerascanthus, Ehretia tinifolia and Bursera simaruba. For the population, the height above the ground presented a mean value of 153.5 ± 71.3 cm. The heights above the ground reached by this species on rainy and non-rainy days showed statistically significant differences (U = 21519.5; P < 0.001). [ABSTRACT FROM AUTHOR]

Published
2022

3. Age-related subniche and reproductive biology of Parachondria neglectus (Littorinimorpha: Annulariidae) in Manzanillo, Cuba

Author

Sariego Frómeta, Sandra, Sariego Tamayo, Orlando Ramón, Marin Morán, Jorge Erick, and Simone, Luiz Ricardo L.

Subjects
reproduction, land snails, Parachondria neglectus, ecological niche, caracoles terrestres, nicho ecológico, reproducción
Abstract

Resumen Parachondria neglectus es un molusco terrestre de la familia Annulariidae, endémico de Cuba y microlocalizado en la provincia de Granma. En la presente investigación se caracterizaron la dinámica temporal del subnicho etario y algunos aspectos de la biología reproductiva de una población de P. neglectus localizada en Manzanillo, GranmaCuba. Se realizaron 30 expediciones entre diciembre 2013 y febrero 2015. Las comparaciones del largo (t = 8.05, P = 0.007) y diámetro mayor (t = 6.24, P = 0.0001) de las conchas de los juveniles truncados y los juveniles completos mostraron diferencias estadísticas significativas, indicando que ambos grupos representan dos clases de edades diferentes. La comparación del diámetro mayor de las conchas de los adultos truncados y los adultos completos (t = 1.50, P = 0.16) demostró que conforman un misma clase de edad en la población. La existencia de diferencias estadísticas significativas entre el largo (t = 19.45, P = 0.0003) y el diámetro mayor (t = 13.19, P = 0.006) de las conchas de las hembras y los machos reafirmaron el dimorfismo sexual en la especie, resultando las hembras de mayores dimensiones respecto a los machos. La mancha circular blancuzca en las conchas es una característica morfológica externa válida para diferenciar a las hembras adultas y ya apareadas en ocasiones anteriores, del resto de los miembros de la población. El período reproductivo comprendió de julio a diciembre 2014. Las cópulas se observaron de julio a octubre 2014 y estuvieron asociadas a condiciones de precipitaciones abundantes y temperaturas altas del verano. El período de reclutamiento ocurrió de septiembre a diciembre 2014. Abstract Parachondria neglectus is a land snail of the Annulariidae family, endemic to Cuba and microlocalized in Granma province. In the present research, the temporal dynamics of age-related subniche and some aspects of the reproductive biology of a P. neglectus population, located in ManzanilloGranma-Cuba, were characterized. Thirty expeditions were performed from December 2013 to February 2015. The comparisons between the length (t = 8.05, P = 0.007) and biggest diameter (t = 6.24, P = 0.0001) of the shells of truncated juveniles and the shells of full juveniles showed significant statistical differences, indicating that both groups represent two kinds of different ages. The comparison between the biggest diameter of the shells of truncated adults and the shells of full adults (t = 1.50, P = 0.16) showed that both groups represent the same kind of age in the population. The existence of significant statistical differences between the length (t = 19.45, P = 0.0003) and the biggest diameter (t = 13.19, P = 0.006) of the females’ shells and the males’ shells verify the sexual dimorphism in the species, proving to be the females of bigger dimensions in relation to the males. The whitish circular spot in the shells is a valid external morphological characteristic to differentiate the adult females already mated in previous occasions from the rest of the members of the population. The reproductive period was from July to December 2014. Copulations were observed from July to October 2014 and they were associated to conditions of abundant precipitations and high temperatures of summer. The recruitment period took place from September to December 2014.

Published
2018

4. Subnicho etario y aspectos de la biología reproductiva de Parachondria neglectus (Littorinimorpha: Annulariidae) en Manzanillo, Cuba

Author

Sariego Frómeta, Sandra, Sariego Tamayo, Orlando Ramón, Marin Morán, Jorge Erick, and Lopes de Simone, Luiz Ricardo

Subjects
land snails, reproduction, Parachondria neglectus, ecological niche, caracoles terrestres, nicho ecológico, reproducción
Abstract

Parachondria neglectus is a land snail of the Annulariidae family, endemic to Cuba and microlocalized in Granma province. In the present research, the temporal dynamics of age-related subniche and some aspects of the reproductive biology of a P. neglectus population, located in Manzanillo-Granma-Cuba, were characterized. Thirty expeditions were performed from December 2013 to February 2015. The comparisons between the length (t = 8.05, P = 0.007) and biggest diameter (t = 6.24, P = 0.0001) of the shells of truncated juveniles and the shells of full juveniles showed significant statistical differences, indicating that both groups represent two kinds of different ages. The comparison between the biggest diameter of the shells of truncated adults and the shells of full adults (t = 1.50, P = 0.16) showed that both groups represent the same kind of age in the population. The existence of significant statistical differences between the length (t = 19.45, P = 0.0003) and the biggest diameter (t = 13.19, P = 0.006) of the females’ shells and the males’ shells verify the sexual dimorphism in the species, proving to be the females of bigger dimensions in relation to the males. The whitish circular spot in the shells is a valid external morphological characteristic to differentiate the adult females already mated in previous occasions from the rest of the members of the population. The reproductive period was from July to December 2014. Copulations were observed from July to October 2014 and they were associated to conditions of abundant precipitations and high temperatures of summer. The recruitment period took place from September to December 2014. Parachondria neglectus es un molusco terrestre de la familia Annulariidae, endémico de Cuba y microlocalizado en la provincia de Granma. En la presente investigación se caracterizaron la dinámica temporal del subnicho etario y algunos aspectos de la biología reproductiva de una población de P. neglectus localizada en Manzanillo, Granma-Cuba. Se realizaron 30 expediciones entre diciembre 2013 y febrero 2015. Las comparaciones del largo (t = 8.05, P = 0.007) y diámetro mayor (t = 6.24, P = 0.0001) de las conchas de los juveniles truncados y los juveniles completos mostraron diferencias estadísticas significativas, indicando que ambos grupos representan dos clases de edades diferentes. La comparación del diámetro mayor de las conchas de los adultos truncados y los adultos completos (t = 1.50, P = 0.16) demostró que conforman un misma clase de edad en la población. La existencia de diferencias estadísticas significativas entre el largo (t = 19.45, P = 0.0003) y el diámetro mayor (t = 13.19, P = 0.006) de las conchas de las hembras y los machos reafirmaron el dimorfismo sexual en la especie, resultando las hembras de mayores dimensiones respecto a los machos. La mancha circular blancuzca en las conchas es una característica morfológica externa válida para diferenciar a las hembras adultas y ya apareadas en ocasiones anteriores, del resto de los miembros de la población. El período reproductivo comprendió de julio a diciembre 2014. Las cópulas se observaron de julio a octubre 2014 y estuvieron asociadas a condiciones de precipitaciones abundantes y temperaturas altas del verano. El período de reclutamiento ocurrió de septiembre a diciembre 2014. &nbsp

Published
2018
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6. Establecimiento y multiplicación in vitro de Curcuma longa L.

Author

Espinosa Reyes, Ángel, José Silva Pupo, Juan, Borges García, Misterbino, Fajardo Rosabal, Lilien, Pérez Pérez, Jorge, González Paneque, Orlando, and Sariego Frómeta, Sandra

Subjects
*TURMERIC, *MEDICINAL plants, *CONDIMENTS, *PLANT micropropagation, *GROWTH regulators, *PLANT regulators
Abstract

Turmeric is a very valuable plant as a condiment, dye and due to its medicinal properties. Despite results achieved in in vitro propagation, rates of in vitro establishment and multiplication are low. The aim of this study was to determine the effect of bud length, physical state of culture medium and concentration of inorganic salts and growth regulators on the in vitro establishment and multiplication of turmeric. Buds taken from main rhizomes were used in the establishment. They were disinfected, several layers of leaf primordia were removed and buds were cut into 0.5-0.7 cm, 0.8-1.0 cm and 1.1-1.3 cm. In vitro plants established after 30 days were used for multiplication. Various concentrations of 6-BAP (0.0, 2.0, 4.0, 6.0 mg·l-1) were added to a basal culture medium. Besides, the effect of adding MS salts 25, 50, 75 and 100% (control) and the use of liquid or semisolid culture medium was determined. The values of disinfection and in vitro establishment, referred in literature, for the culture were increased through the use of terminal buds of 0.8-1.0 cm and sodium hypochlorite 2% of active chlorine for 25 minutes. During the in vitro multiplication, values for the number of shoots per explant, length of shoots and number of roots per shoot were similar to those previously referred in the literature. [ABSTRACT FROM AUTHOR]

Published
2009

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