First Reconstruction of Kinship in a Scalloped Hammerhead Shark Aggregation Reveals the Mating Patterns and Breeding Sex Ratio

Amandine D. Marie; Christophe Herbinger; Philippe Fullsack; Ciro Rico

doi:10.3389/fmars.2019.00676

First Reconstruction of Kinship in a Scalloped Hammerhead Shark Aggregation Reveals the Mating Patterns and Breeding Sex Ratio

Amandine D. Marie, Christophe Herbinger, Philippe Fullsack, Ciro Rico

Medicine

Medicine

Producción científica: Contribución a una revista › Artículo › revisión exhaustiva

10 Citas (Scopus)

Resumen

Sharks constitute one of the most threatened clades (Selachimorpha) of all marine fish, and substantial management efforts are required to help the recovery of their populations worldwide. Despite its significant impact on population dynamics and conservation, sharks’ reproductive and philopatric behavior has received little attention in fisheries management. The scalloped hammerhead shark (Sphyrna lewini), an endangered species listed on the IUCN’s Red List and on the CITES’ Appendix II, is an apex predator that potentially exhibits female philopatry to mating grounds. We reconstructed, for the first time in an open ocean species, the relationship among 166 juvenile individuals caught in a recently discovered aggregation of the Rewa Delta, Fiji, and determined the sample population’s mating system using 6,437 SNPs. Using two software packages, COLONY2 and SNP PEDIGREE, results revealed very high consistency in the identification of full and half sib. Moreover, COLONY2 allowed us to identify an equal breeding sex ratio for each cohort analyzed for this population (1.04:1; 1.02:1), as well as several cases of multiple paternity and numerous matings of the same male with different females suggesting polygynandry for this species. These findings reveal additional information about the complex life history of the scalloped hammerhead shark.

Idioma original	English
Número de artículo	676
Publicación	Frontiers in Marine Science
Volumen	6
DOI	https://doi.org/10.3389/fmars.2019.00676
Estado	Published - nov. 1 2019

Nota bibliográfica

Funding Information:
CR and AM designed the project. CR wrote the grant proposals, which funded the project. AM organized and sampled all specimens. AM, CH, and PF performed the statistical analyses. All authors reviewed and contributed to the writing of the manuscript.

Funding Information:
We acknowledge Celso Cawich, Semi Nagatalevu, Inoke Nagatalevu, Diego Carde?osa, Gauthier Mescam, Ron Ronaivakulua, Sydney Shier, Kristian Miles, Brittany Waters, Niklas Komoss, Tom Vierus, Andrew Paris, Timoci Varinava, Ramesh Prasad, and Netani Tulele for their help during field work. We thank Tevita Soqo for producing Figure 1. We also acknowledge Aisake Batibasaga (Director of the Fisheries Department of the Ministry of Fisheries and Forest from 2014 to 2016), George Madden (Director of the Fisheries Department of the Ministry of Fisheries and Forest since 2016), Joji Kalounivalu (Roko Tui, Rewa Provincial Council, Rewa), Ian Campbell (Shark Conservation Programme, WWF-Fiji), and Mike Neuman (Beqa Adventure Divers) for their continued advice and/or support during the project. Funding. This work was primarily funded by The University of the South Pacific, Strategic Research Themes Program for Research and Innovation, and the Faculty of Science, Technology and Environment (Grant No. SRT/6175-3107-70766-617508 to CR). We thank Projects Abroad and Frontiers for additional funding for field work surveys in the Rewa Delta.

Publisher Copyright:
© Copyright © 2019 Marie, Herbinger, Fullsack and Rico.

ASJC Scopus Subject Areas

Oceanography
Global and Planetary Change
Aquatic Science
Water Science and Technology
Environmental Science (miscellaneous)
Ocean Engineering

ODS de las Naciones Unidas

Este resultado contribuye a los siguientes Objetivos de Desarrollo Sostenible

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title = "First Reconstruction of Kinship in a Scalloped Hammerhead Shark Aggregation Reveals the Mating Patterns and Breeding Sex Ratio",

abstract = "Sharks constitute one of the most threatened clades (Selachimorpha) of all marine fish, and substantial management efforts are required to help the recovery of their populations worldwide. Despite its significant impact on population dynamics and conservation, sharks{\textquoteright} reproductive and philopatric behavior has received little attention in fisheries management. The scalloped hammerhead shark (Sphyrna lewini), an endangered species listed on the IUCN{\textquoteright}s Red List and on the CITES{\textquoteright} Appendix II, is an apex predator that potentially exhibits female philopatry to mating grounds. We reconstructed, for the first time in an open ocean species, the relationship among 166 juvenile individuals caught in a recently discovered aggregation of the Rewa Delta, Fiji, and determined the sample population{\textquoteright}s mating system using 6,437 SNPs. Using two software packages, COLONY2 and SNP PEDIGREE, results revealed very high consistency in the identification of full and half sib. Moreover, COLONY2 allowed us to identify an equal breeding sex ratio for each cohort analyzed for this population (1.04:1; 1.02:1), as well as several cases of multiple paternity and numerous matings of the same male with different females suggesting polygynandry for this species. These findings reveal additional information about the complex life history of the scalloped hammerhead shark.",

author = "Marie, {Amandine D.} and Christophe Herbinger and Philippe Fullsack and Ciro Rico",

note = "Funding Information: CR and AM designed the project. CR wrote the grant proposals, which funded the project. AM organized and sampled all specimens. AM, CH, and PF performed the statistical analyses. All authors reviewed and contributed to the writing of the manuscript. Funding Information: We acknowledge Celso Cawich, Semi Nagatalevu, Inoke Nagatalevu, Diego Carde?osa, Gauthier Mescam, Ron Ronaivakulua, Sydney Shier, Kristian Miles, Brittany Waters, Niklas Komoss, Tom Vierus, Andrew Paris, Timoci Varinava, Ramesh Prasad, and Netani Tulele for their help during field work. We thank Tevita Soqo for producing Figure 1. We also acknowledge Aisake Batibasaga (Director of the Fisheries Department of the Ministry of Fisheries and Forest from 2014 to 2016), George Madden (Director of the Fisheries Department of the Ministry of Fisheries and Forest since 2016), Joji Kalounivalu (Roko Tui, Rewa Provincial Council, Rewa), Ian Campbell (Shark Conservation Programme, WWF-Fiji), and Mike Neuman (Beqa Adventure Divers) for their continued advice and/or support during the project. Funding. This work was primarily funded by The University of the South Pacific, Strategic Research Themes Program for Research and Innovation, and the Faculty of Science, Technology and Environment (Grant No. SRT/6175-3107-70766-617508 to CR). We thank Projects Abroad and Frontiers for additional funding for field work surveys in the Rewa Delta. Publisher Copyright: {\textcopyright} Copyright {\textcopyright} 2019 Marie, Herbinger, Fullsack and Rico.",

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N1 - Funding Information: CR and AM designed the project. CR wrote the grant proposals, which funded the project. AM organized and sampled all specimens. AM, CH, and PF performed the statistical analyses. All authors reviewed and contributed to the writing of the manuscript. Funding Information: We acknowledge Celso Cawich, Semi Nagatalevu, Inoke Nagatalevu, Diego Carde?osa, Gauthier Mescam, Ron Ronaivakulua, Sydney Shier, Kristian Miles, Brittany Waters, Niklas Komoss, Tom Vierus, Andrew Paris, Timoci Varinava, Ramesh Prasad, and Netani Tulele for their help during field work. We thank Tevita Soqo for producing Figure 1. We also acknowledge Aisake Batibasaga (Director of the Fisheries Department of the Ministry of Fisheries and Forest from 2014 to 2016), George Madden (Director of the Fisheries Department of the Ministry of Fisheries and Forest since 2016), Joji Kalounivalu (Roko Tui, Rewa Provincial Council, Rewa), Ian Campbell (Shark Conservation Programme, WWF-Fiji), and Mike Neuman (Beqa Adventure Divers) for their continued advice and/or support during the project. Funding. This work was primarily funded by The University of the South Pacific, Strategic Research Themes Program for Research and Innovation, and the Faculty of Science, Technology and Environment (Grant No. SRT/6175-3107-70766-617508 to CR). We thank Projects Abroad and Frontiers for additional funding for field work surveys in the Rewa Delta. Publisher Copyright: © Copyright © 2019 Marie, Herbinger, Fullsack and Rico.

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First Reconstruction of Kinship in a Scalloped Hammerhead Shark Aggregation Reveals the Mating Patterns and Breeding Sex Ratio

Resumen

Nota bibliográfica

ASJC Scopus Subject Areas

ODS de las Naciones Unidas

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