Migrations and habitat use of the smooth hammerhead shark (Sphyrna zygaena) in the Atlantic Ocean.
The smooth hammerhead shark, Sphyrna zygaena, is a cosmopolitan semipelagic shark captured as bycatch in pelagic oceanic fisheries, especially pelagic longlines targeting swordfish and/or tunas. From 2012 to 2016, eight smooth hammerheads were tagged with Pop-up Satellite Archival Tags in the inter-...
Saved in:
| _version_ | 1849766384957915136 |
|---|---|
| author | Catarina C Santos Rui Coelho |
| author_facet | Catarina C Santos Rui Coelho |
| author_sort | Catarina C Santos |
| collection | DOAJ |
| description | The smooth hammerhead shark, Sphyrna zygaena, is a cosmopolitan semipelagic shark captured as bycatch in pelagic oceanic fisheries, especially pelagic longlines targeting swordfish and/or tunas. From 2012 to 2016, eight smooth hammerheads were tagged with Pop-up Satellite Archival Tags in the inter-tropical region of the Northeast Atlantic Ocean, with successful transmissions received from seven tags (total of 319 tracking days). Results confirmed the smooth hammerhead is a highly mobile species, as the longest migration ever documented for this species (> 6600 km) was recorded. An absence of a diel vertical movement behavior was noted, with the sharks spending most of their time at surface waters (0-50 m) above 23°C. The operating depth of the pelagic longline gear was measured with Minilog Temperature and Depth Recorders, and the overlap with the species vertical distribution was calculated. The overlap is taking place mainly during the night and is higher for juveniles (~40% of overlap time). The novel information presented can now be used to contribute to the provision of sustainable management tools and serve as input for Ecological Risk Assessments for smooth hammerheads caught in Atlantic pelagic longline fisheries. |
| format | Article |
| id | doaj-art-6cef082454b9436aba8c201bef3fc58f |
| institution | DOAJ |
| issn | 1932-6203 |
| language | English |
| publishDate | 2018-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-6cef082454b9436aba8c201bef3fc58f2025-08-20T03:04:35ZengPublic Library of Science (PLoS)PLoS ONE1932-62032018-01-01136e019866410.1371/journal.pone.0198664Migrations and habitat use of the smooth hammerhead shark (Sphyrna zygaena) in the Atlantic Ocean.Catarina C SantosRui CoelhoThe smooth hammerhead shark, Sphyrna zygaena, is a cosmopolitan semipelagic shark captured as bycatch in pelagic oceanic fisheries, especially pelagic longlines targeting swordfish and/or tunas. From 2012 to 2016, eight smooth hammerheads were tagged with Pop-up Satellite Archival Tags in the inter-tropical region of the Northeast Atlantic Ocean, with successful transmissions received from seven tags (total of 319 tracking days). Results confirmed the smooth hammerhead is a highly mobile species, as the longest migration ever documented for this species (> 6600 km) was recorded. An absence of a diel vertical movement behavior was noted, with the sharks spending most of their time at surface waters (0-50 m) above 23°C. The operating depth of the pelagic longline gear was measured with Minilog Temperature and Depth Recorders, and the overlap with the species vertical distribution was calculated. The overlap is taking place mainly during the night and is higher for juveniles (~40% of overlap time). The novel information presented can now be used to contribute to the provision of sustainable management tools and serve as input for Ecological Risk Assessments for smooth hammerheads caught in Atlantic pelagic longline fisheries.https://storage.googleapis.com/plos-corpus-prod/10.1371/journal.pone.0198664/1/pone.0198664.pdf?X-Goog-Algorithm=GOOG4-RSA-SHA256&X-Goog-Credential=wombat-sa%40plos-prod.iam.gserviceaccount.com%2F20210222%2Fauto%2Fstorage%2Fgoog4_request&X-Goog-Date=20210222T152117Z&X-Goog-Expires=3600&X-Goog-SignedHeaders=host&X-Goog-Signature=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 |
| spellingShingle | Catarina C Santos Rui Coelho Migrations and habitat use of the smooth hammerhead shark (Sphyrna zygaena) in the Atlantic Ocean. PLoS ONE |
| title | Migrations and habitat use of the smooth hammerhead shark (Sphyrna zygaena) in the Atlantic Ocean. |
| title_full | Migrations and habitat use of the smooth hammerhead shark (Sphyrna zygaena) in the Atlantic Ocean. |
| title_fullStr | Migrations and habitat use of the smooth hammerhead shark (Sphyrna zygaena) in the Atlantic Ocean. |
| title_full_unstemmed | Migrations and habitat use of the smooth hammerhead shark (Sphyrna zygaena) in the Atlantic Ocean. |
| title_short | Migrations and habitat use of the smooth hammerhead shark (Sphyrna zygaena) in the Atlantic Ocean. |
| title_sort | migrations and habitat use of the smooth hammerhead shark sphyrna zygaena in the atlantic ocean |
| url | https://storage.googleapis.com/plos-corpus-prod/10.1371/journal.pone.0198664/1/pone.0198664.pdf?X-Goog-Algorithm=GOOG4-RSA-SHA256&X-Goog-Credential=wombat-sa%40plos-prod.iam.gserviceaccount.com%2F20210222%2Fauto%2Fstorage%2Fgoog4_request&X-Goog-Date=20210222T152117Z&X-Goog-Expires=3600&X-Goog-SignedHeaders=host&X-Goog-Signature=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 |
| work_keys_str_mv | AT catarinacsantos migrationsandhabitatuseofthesmoothhammerheadsharksphyrnazygaenaintheatlanticocean AT ruicoelho migrationsandhabitatuseofthesmoothhammerheadsharksphyrnazygaenaintheatlanticocean |