First record of a neonate bluntnose sixgill shark (Hexanchus griseus) from Baja California Sur, Mexico
Abstract The bluntnose sixgill shark (Hexanchus griseus) is a wide‐ranged deep‐water shark species found off continental and insular shelves. Despite its global distribution, little is known about the reproductive ecology of the species, particularly with regard to the location and timing of importa...
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| Format: | Article |
| Language: | English |
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Wiley
2024-07-01
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| Series: | Ecology and Evolution |
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| Online Access: | https://doi.org/10.1002/ece3.11664 |
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| author | Darren A. Whitehead Joel H. Gayford |
| author_facet | Darren A. Whitehead Joel H. Gayford |
| author_sort | Darren A. Whitehead |
| collection | DOAJ |
| description | Abstract The bluntnose sixgill shark (Hexanchus griseus) is a wide‐ranged deep‐water shark species found off continental and insular shelves. Despite its global distribution, little is known about the reproductive ecology of the species, particularly with regard to the location and timing of important phenological events such as mating and pupping. In this study, we report the landing of a neonate H. griseus individual from an artisanal fishing camp in Baja California Sur, Mexico. This represents only the ninth confirmed record of the species from the Mexican Pacific and the first to report a neonate specimen in Mexican waters. We discuss this specimen in the context of the environmental conditions in which it was found, ultimately suggesting that these shallow coastal waters may be an important pupping ground for H. griseus in the region. Furthermore, the specimen was found during the winter months (whereas all previous reports have suggested H. griseus pups during the summer), implying regional variation in reproductive periodicity, or the presence of multiple reproductive events per year. This study provides novel insight into the reproductive biology of H. griseus and the ecological characteristics of the species in the Northern Mexican Pacific. |
| format | Article |
| id | doaj-art-7e07308d481945fe8f5a73dd330139cd |
| institution | Kabale University |
| issn | 2045-7758 |
| language | English |
| publishDate | 2024-07-01 |
| publisher | Wiley |
| record_format | Article |
| series | Ecology and Evolution |
| spelling | doaj-art-7e07308d481945fe8f5a73dd330139cd2025-08-20T03:55:58ZengWileyEcology and Evolution2045-77582024-07-01147n/an/a10.1002/ece3.11664First record of a neonate bluntnose sixgill shark (Hexanchus griseus) from Baja California Sur, MexicoDarren A. Whitehead0Joel H. Gayford1Investigación Tiburones Mexico A.C La Paz MexicoDepartment of Life Sciences Imperial College London London UKAbstract The bluntnose sixgill shark (Hexanchus griseus) is a wide‐ranged deep‐water shark species found off continental and insular shelves. Despite its global distribution, little is known about the reproductive ecology of the species, particularly with regard to the location and timing of important phenological events such as mating and pupping. In this study, we report the landing of a neonate H. griseus individual from an artisanal fishing camp in Baja California Sur, Mexico. This represents only the ninth confirmed record of the species from the Mexican Pacific and the first to report a neonate specimen in Mexican waters. We discuss this specimen in the context of the environmental conditions in which it was found, ultimately suggesting that these shallow coastal waters may be an important pupping ground for H. griseus in the region. Furthermore, the specimen was found during the winter months (whereas all previous reports have suggested H. griseus pups during the summer), implying regional variation in reproductive periodicity, or the presence of multiple reproductive events per year. This study provides novel insight into the reproductive biology of H. griseus and the ecological characteristics of the species in the Northern Mexican Pacific.https://doi.org/10.1002/ece3.11664hexanchiformesMexican Pacificnursery areapupping groundreproductive periodicity |
| spellingShingle | Darren A. Whitehead Joel H. Gayford First record of a neonate bluntnose sixgill shark (Hexanchus griseus) from Baja California Sur, Mexico Ecology and Evolution hexanchiformes Mexican Pacific nursery area pupping ground reproductive periodicity |
| title | First record of a neonate bluntnose sixgill shark (Hexanchus griseus) from Baja California Sur, Mexico |
| title_full | First record of a neonate bluntnose sixgill shark (Hexanchus griseus) from Baja California Sur, Mexico |
| title_fullStr | First record of a neonate bluntnose sixgill shark (Hexanchus griseus) from Baja California Sur, Mexico |
| title_full_unstemmed | First record of a neonate bluntnose sixgill shark (Hexanchus griseus) from Baja California Sur, Mexico |
| title_short | First record of a neonate bluntnose sixgill shark (Hexanchus griseus) from Baja California Sur, Mexico |
| title_sort | first record of a neonate bluntnose sixgill shark hexanchus griseus from baja california sur mexico |
| topic | hexanchiformes Mexican Pacific nursery area pupping ground reproductive periodicity |
| url | https://doi.org/10.1002/ece3.11664 |
| work_keys_str_mv | AT darrenawhitehead firstrecordofaneonatebluntnosesixgillsharkhexanchusgriseusfrombajacaliforniasurmexico AT joelhgayford firstrecordofaneonatebluntnosesixgillsharkhexanchusgriseusfrombajacaliforniasurmexico |