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4. Contributors

Author

Amodio, Piero, primary, Amor, Michael, additional, Bo, Qikang, additional, Borges, Francisco, additional, Bower, John R., additional, Caamal-Monsreal, Claudia, additional, Caldwell, Roy L., additional, Carrasco, Sergio A., additional, Castellanos-Martínez, Sheila, additional, Che, Leo J., additional, Cisneros, Rosario, additional, Court, Melanie, additional, Dantas, Renato J.S., additional, Di Cosmo, Anna, additional, Díaz, Fernando, additional, Díaz-Santana-Iturrios, Mariana, additional, Farías, Ana, additional, Fiorito, Graziano, additional, Galindo-Sánchez, Clara E., additional, Gallardo, Pedro, additional, Gestal, Camino, additional, Gleadall, Ian G., additional, González, Ángel F., additional, González-Gómez, Roberto, additional, Guerra, Ángel, additional, Haimovici, Manuel, additional, Hall, Karina C., additional, Hanlon, Roger T., additional, Hofmeister, Jennifer K.K., additional, Hutchinson, Neil, additional, Ibáñez, Christian M., additional, Ikeda, Yuzuru, additional, Imperadore, Pamela, additional, Ivaylova, Silvina, additional, Juárez, Oscar E., additional, Kommritz, Juergen G., additional, Kuba, Michael, additional, Lajbner, Zdenek, additional, Leite, Tatiana S., additional, Lima, Françoise D., additional, Lishchenko, Fedor, additional, Lopes, Vanessa M., additional, López-Galindo, Laura L., additional, López-Rocha, Jorge, additional, Lourenço, Silvia, additional, Markaida, Unai, additional, Matos, Fábio L., additional, Moltschaniwskyj, Natalie A., additional, Monteiro, Silvia S., additional, Morillo-Velarde, Piedad S., additional, Nabhitabhata, Jaruwat, additional, Narvarte, Maite Andrea, additional, Noro, Kyosei, additional, Ortiz, Nicolas, additional, Otjacques, Eve, additional, Pardo-Gandarillas, María Cecilia, additional, Pascual, Cristina, additional, Pereira, João, additional, Petchkamnerd, Jinda, additional, Pierce, Graham J., additional, Pissarra, Vasco, additional, Pizzulli, Federica, additional, Polese, Gianluca, additional, Ponte, Giovanna, additional, Raffini, Francesca, additional, Re, Denisse, additional, Ren, Jing, additional, Rosa, Rui, additional, Rosas, Carlos, additional, Roumbedakis, Katina, additional, Roura, Álvaro, additional, Sakurai, Yasunori, additional, Sampaio, Eduardo, additional, Santos, Catarina P., additional, Scheel, David, additional, Segawa, Susumu, additional, Shau Hwai, Aileen Tan, additional, Simakov, Oleg, additional, Sobrino, Ignacio, additional, Storero, Lorena Pia, additional, Tang, Yan, additional, Tongtherm, Kittichai, additional, Tuanapaya, Surangkana, additional, Uriarte, Iker, additional, Ventura-López, Claudia, additional, Villanueva, Roger, additional, Voight, Janet R., additional, Voss, Kelley M., additional, Wang, Jinhai, additional, Williams, Becky L., additional, Xing, De, additional, Yamrungrueng, Anyanee, additional, and Zheng, Xiaodong, additional

Published
2024
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5. Past, present, and future trends in octopus research

Author

Rosa, Rui, primary, Santos, Catarina P., additional, Borges, Francisco, additional, Amodio, Piero, additional, Amor, Michael, additional, Bower, John R., additional, Caldwell, Roy L., additional, Di Cosmo, Anna, additional, Court, Melanie, additional, Fiorito, Graziano, additional, Gestal, Camino, additional, González, Ángel F., additional, Guerra, Ángel, additional, Hanlon, Roger T., additional, Hofmeister, Jennifer K.K., additional, Ibáñez, Christian M., additional, Ikeda, Yuzuru, additional, Imperadore, Pamela, additional, Kommritz, Juergen G., additional, Kuba, Michael, additional, Hall, Karina C., additional, Lajbner, Zdenek, additional, Leite, Tatiana S., additional, Lopes, Vanessa M., additional, Markaida, Unai, additional, Moltschaniwskyj, Natalie A., additional, Nabhitabhata, Jaruwat, additional, Ortiz, Nicolas, additional, Otjacques, Eve, additional, Pizzulli, Federica, additional, Ponte, Giovanna, additional, Polese, Gianluca, additional, Raffini, Francesca, additional, Rosas, Carlos, additional, Roura, Álvaro, additional, Sampaio, Eduardo, additional, Segawa, Susumu, additional, Simakov, Oleg, additional, Sobrino, Ignacio, additional, Storero, Lorena Pia, additional, Voight, Janet R., additional, Williams, Becky L., additional, Zheng, Xiaodong, additional, Pierce, Graham J., additional, Villanueva, Roger, additional, and Gleadall, Ian G., additional

Published
2024
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6. Octopus vulgaris, the common octopus

Author

Rosa, Rui, primary, Roura, Álvaro, additional, Amor, Michael, additional, Gleadall, Ian G., additional, Guerra, Ángel, additional, González, Ángel F., additional, Lopes, Vanessa M., additional, Pereira, João, additional, Pierce, Graham J., additional, Sampaio, Eduardo, additional, and Villanueva, Roger, additional

Published
2024
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7. Age and growth analysis of Loliginidae squid paralarvae in the NW Spanish coast using statolith increment counts

Author

Consejo Superior de Investigaciones Científicas (España), Ministerio de Economía y Competitividad (España), García-Mayoral, Elsa [0000-0003-4815-3076], Roura, Álvaro [0000-0003-3532-6759], Pierce, Graham J. [0000-0002-4744-4501], González, Ángel F. [0000-0001-6041-9952], García-Mayoral, Elsa, Roura, Álvaro, Pierce, Graham J., González, Ángel F., Consejo Superior de Investigaciones Científicas (España), Ministerio de Economía y Competitividad (España), García-Mayoral, Elsa [0000-0003-4815-3076], Roura, Álvaro [0000-0003-3532-6759], Pierce, Graham J. [0000-0002-4744-4501], González, Ángel F. [0000-0001-6041-9952], García-Mayoral, Elsa, Roura, Álvaro, Pierce, Graham J., and González, Ángel F.

Abstract

Knowledge of recruitment to a fishery is particularly important in short-lived species, like most cephalopods, in which there is a complete turnover of individual every 1 or 2 years. In this study, age, body length, statolith length and growth rates of loliginid paralarvae (Alloteuthis media, A. subulata and Loligo vulgaris) were determined to evaluate the form of the growth curve and differences between species and hatching seasons. A total of 222 paralarvae collected in zooplankton samples along the Galician coast (NW Spain) were used to determine relationships between dorsal mantle length (DML), statolith length (SL) and the number of increments (NI)) deposited in the statolith. The paralarvae of L. vulgaris were between 1 and 35 days old, while both Alloteuthis species ranged in age from 1 to 54 days. Generalised additive models (GAMs) revealed non-linear growth in DML, with L. vulgaris exhibiting higher DML-at-age than Alloteuthis species. The best parametric model fit for these data was obtained using exponential regressions. The SL–NI relationship also differed between species, with L. vulgaris having larger statolith length at age. The paralarvae of L. vulgaris and A. media had two well-differentiated hatching peaks, one in late spring-early summer (beginning of the upwelling season) and another peak in late autumn (end of the upwelling season). Alloteuthis subulata had an earlier hatching peak in spring than in the other two loliginid species—and the second peak in autumn was barely visible, possibly because this species occurs further north in areas not sampled in autumn

Published
2024

8. The best defense is a good offense: Anti-predator behavior of the common octopus (Octopus vulgaris) against conger eel attacks

Author

Consejo Superior de Investigaciones Científicas (España), Ministerio de Ciencia e Innovación (España), Salvador, Beatriz, Cabanellas-Reboredo, Miguel, Garci, Manuel E., González, Ángel F., Hernández-Urcera, Jorge, Consejo Superior de Investigaciones Científicas (España), Ministerio de Ciencia e Innovación (España), Salvador, Beatriz, Cabanellas-Reboredo, Miguel, Garci, Manuel E., González, Ángel F., and Hernández-Urcera, Jorge

Abstract

We present the description of defensive behavior in wild Octopus vulgaris against conger eel (Conger conger) attacks based on three video sequences recorded by recreational SCUBA divers in the eastern Atlantic off the coast of Galicia (NW Spain) and in the Cantabrian Sea (NW Spain). These records document common traits in defensive behavior: (1) the octopuses enveloped the conger eel's head to obscure its view; (2) they covered the eel's gills in an attempt to suffocate it; (3) they released ink; (4) the octopuses lost some appendages because of the fight. In the third video, the octopus did not exhibit the defensive behavior described in the first two videos due to an inability to utilize its arms in defense, and the conger eel's success in capturing octopuses is discussed. Additionally, both the cost that the octopus could face by losing some arms during the fight and whether the experience it acquires can be an advantage for future encounters are analyzed. The defensive behavior exhibited by octopuses in this study highlights their ability to survive in a hostile environment and serves as an example of the extensive repertoire of anti-predator strategies employed by these cephalopods

Published
2024

9. Coexistence of Two Copepods, Recorded for the First Time, in NW Iberian Shelf: The Case of Oithona atlantica and the Allochthonous O. davisae

Author

Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Ministerio de Ciencia e Innovación (España), Xunta de Galicia, European Commission, García-Alves, Lara, Ramilo, Andrea, Pascual, Santiago, González, Ángel F., Abollo, Elvira, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Ministerio de Ciencia e Innovación (España), Xunta de Galicia, European Commission, García-Alves, Lara, Ramilo, Andrea, Pascual, Santiago, González, Ángel F., and Abollo, Elvira

Abstract

This paper compiles the data regarding the first occurrence of Oithona davisae and O. atlantica in NW Spain, which is supported by morphological and molecular analysis. Additionally, we investigated the seasonal dynamics of the invasive O. davisae, revealing that its abundance is conditioned by upwelling-downwelling patterns in the Rías Baixas of Galicia. Temperature was the most correlated factor, with higher abundances in upwelling relaxation-downwelling events. More studies in long-term zooplankton dynamics and molecular analysis are needed to determine if O. davisae is displacing other native species of the same genus, such as O. atlantica, in Galician waters.

Published
2024

10. Octopus vulgaris, the common octopus

Author

Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Rosa, Rui, Roura, Álvaro, Amor, Michael, Gleadall, Ian G., Guerra, Ángel, González, Ángel F., Lopes, Vanessa M., Pereira, Joao, Pierce, Graham J., Sampaio, Eduardo, Villanueva, Roger, Ministerio de Ciencia, Innovación y Universidades (España), Agencia Estatal de Investigación (España), Rosa, Rui, Roura, Álvaro, Amor, Michael, Gleadall, Ian G., Guerra, Ángel, González, Ángel F., Lopes, Vanessa M., Pereira, Joao, Pierce, Graham J., Sampaio, Eduardo, and Villanueva, Roger

Abstract

The common octopus, Octopus vulgaris Cuvier, 1797, is a meroplanktonic species with planktonic hatchlings and bentic juveniles and adults, which is found throughout the northeast and eastern central Atlantic Ocean, including central Atlantic islands and the Mediterranean Sea. [...]

Published
2024

11. Past, present, and future trends in octopus research

Author

Agencia Estatal de Investigación (España), Rosa, Rui, Santos, Catarina P., Borges, Francisco O., Amodio, Piero, Amor, Michael, Bower, John R., Caldwell, Roy L., Di Cosmo, Anna, Court, Melanie, Gestal, C., González, Ángel F., Guerra, Ángel, Hanlon, Roger T., Hofmiester, Jennifer K. K., Ibáñez, Christian Marcelo, Ikeda, Yuzuru, Imperadore, Pamela, Kommritz, Juergen G., Kuba, Michael, Hall, Karina C., Lajbner, Zdenek, Leite, Tatiana S., Lopes, Vanessa M., Markaida, Unai, Moltschaniwskyj, Natalie A., Nabhitabhata, Jaruwat, Ortiz, Nicolás, Otjacques, Eve, Pizzulli, Federica, Ponte, Giovanna, Polese, Gianluca, Raffini, Francesca, Rosas, Carlos, Roura, Álvaro, Sampaio, Eduardo, Segawa, Susumu, Simakov, Oleg, Sobrino, Ignacio, Storero, Lorena Pia, Voight, Janet R., Williams, Becky L., Zheng, Xiaodong, Pierce, Graham J., Villanueva, Roger, Gleadall, Ian G., Agencia Estatal de Investigación (España), Rosa, Rui, Santos, Catarina P., Borges, Francisco O., Amodio, Piero, Amor, Michael, Bower, John R., Caldwell, Roy L., Di Cosmo, Anna, Court, Melanie, Gestal, C., González, Ángel F., Guerra, Ángel, Hanlon, Roger T., Hofmiester, Jennifer K. K., Ibáñez, Christian Marcelo, Ikeda, Yuzuru, Imperadore, Pamela, Kommritz, Juergen G., Kuba, Michael, Hall, Karina C., Lajbner, Zdenek, Leite, Tatiana S., Lopes, Vanessa M., Markaida, Unai, Moltschaniwskyj, Natalie A., Nabhitabhata, Jaruwat, Ortiz, Nicolás, Otjacques, Eve, Pizzulli, Federica, Ponte, Giovanna, Polese, Gianluca, Raffini, Francesca, Rosas, Carlos, Roura, Álvaro, Sampaio, Eduardo, Segawa, Susumu, Simakov, Oleg, Sobrino, Ignacio, Storero, Lorena Pia, Voight, Janet R., Williams, Becky L., Zheng, Xiaodong, Pierce, Graham J., Villanueva, Roger, and Gleadall, Ian G.

Abstract

This chapter describes past and present publication trends in octopus research following a systematic mapping approach. Publication rates in popular research topics such as life history and ecology are decreasing, while others are increasing and taking the spotlight. Interest in behaviour has seen a considerable uptick in recent years. Also, rapid advances, emerging tools, and widespread access to DNA sequence information have stimulated an increased focus on topics relating to genomics & evolution. Research related to diversity & bBiogeography is also increasing, especially in the context of the concurrent biodiversity and climate crises. Although global change represents the least studied topic to date, interest has increased tremendously over the past 5 years, with more than double the publication rate observed for behaviour (the topic with the second largest publication rate). Our analysis also provides a geographical perspective; the food and argriculture organization region with the most octopus-related studies is the Mediterranean, followed by the Northeast and Western-Central Atlantic Ocean. Regarding species of interest, Octopus vulgaris stands out as the overwhelming front-runner representing more than half of all records and over five times more than the second most studied species, Octopus maya. We also provide a discussion on future directions for key subjects, including behaviour and cognition, iEcology and citizen science, bio-robotics, deep-sea research, climate change, and culture and welfare, among others, with the hope of providing an agenda for future research

Published
2024

12. Observational evidence of egg guarding in wild European squid.

Author

Hernández‐Urcera, Jorge, González, Ángel F., Escolano, Felipe, and Cabanellas‐Reboredo, Miguel

Subjects
*SQUIDS, *CEPHALOPODA, *EGGS, *OCEAN bottom, *MALES
Abstract

It is accepted that loliginids, like other squid, deposit their eggs in crevices on the seabed and then abandon them. In this work, we present observational evidence of egg guarding behavior in wild European squid, Loligo vulgaris. While monitoring a squid spawning crevice at night in Spain, a large mass of squid eggs was located and filmed 17 times during 42 days, until hatching. A male and a female of L. vulgaris were filmed in front of the crevice. The same male was filmed guarding the eggs on consecutive days. In the presence of the divers, male and female alternated their approaches to the crevice repeatedly touching and flushing the egg clusters. This guarding behavior differs from the reproductive habits assumed for the European squid and could represent the first evidence of egg guarding by a male in cephalopods. [ABSTRACT FROM AUTHOR]

Published
2024
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16. Chapter 23 - Past, present, and future trends in octopus research

Author

Rosa, Rui, Santos, Catarina P., Borges, Francisco, Amodio, Piero, Amor, Michael, Bower, John R., Caldwell, Roy L., Di Cosmo, Anna, Court, Melanie, Fiorito, Graziano, Gestal, Camino, González, Ángel F., Guerra, Ángel, Hanlon, Roger T., Hofmeister, Jennifer K.K., Ibáñez, Christian M., Ikeda, Yuzuru, Imperadore, Pamela, Kommritz, Juergen G., Kuba, Michael, Hall, Karina C., Lajbner, Zdenek, Leite, Tatiana S., Lopes, Vanessa M., Markaida, Unai, Moltschaniwskyj, Natalie A., Nabhitabhata, Jaruwat, Ortiz, Nicolas, Otjacques, Eve, Pizzulli, Federica, Ponte, Giovanna, Polese, Gianluca, Raffini, Francesca, Rosas, Carlos, Roura, Álvaro, Sampaio, Eduardo, Segawa, Susumu, Simakov, Oleg, Sobrino, Ignacio, Storero, Lorena Pia, Voight, Janet R., Williams, Becky L., Zheng, Xiaodong, Pierce, Graham J., Villanueva, Roger, and Gleadall, Ian G.

Published
2024
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