Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks

Abstract Ghost sharks (subclass Holocephali) remain a largely data‐poor group of cartilaginous fishes. The general paucity of attention may partially be related to identification and unresolved taxonomic issues, occurrence in the deep oceans, and their low value and interest in fisheries (which some...

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Published in:Fish and Fisheries
Main Authors: Finucci, Brittany, Cheok, Jessica, Ebert, David A., Herman, Katelyn, Kyne, Peter M., Dulvy, Nicholas K.
Format: Article in Journal/Newspaper
Language:English
Published: Wiley 2020
Subjects:
Online Access:http://dx.doi.org/10.1111/faf.12526
https://onlinelibrary.wiley.com/doi/pdf/10.1111/faf.12526
https://onlinelibrary.wiley.com/doi/full-xml/10.1111/faf.12526
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spelling crwiley:10.1111/faf.12526 2024-09-30T14:40:03+00:00 Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks Finucci, Brittany Cheok, Jessica Ebert, David A. Herman, Katelyn Kyne, Peter M. Dulvy, Nicholas K. 2020 http://dx.doi.org/10.1111/faf.12526 https://onlinelibrary.wiley.com/doi/pdf/10.1111/faf.12526 https://onlinelibrary.wiley.com/doi/full-xml/10.1111/faf.12526 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor Fish and Fisheries volume 22, issue 2, page 391-412 ISSN 1467-2960 1467-2979 journal-article 2020 crwiley https://doi.org/10.1111/faf.12526 2024-09-03T04:26:10Z Abstract Ghost sharks (subclass Holocephali) remain a largely data‐poor group of cartilaginous fishes. The general paucity of attention may partially be related to identification and unresolved taxonomic issues, occurrence in the deep oceans, and their low value and interest in fisheries (which some notable exceptions). Here, we synthesize and assess the extinction risk of all known extant ghost sharks (52 species) by applying the IUCN Red List of Threatened Species Categories and Criteria. Ghost sharks have a low proportion of threatened (8%) and Near Threatened (8%) species, with most species (69%) assessed as Least Concern. The group still exhibits some data deficiency (15%), and biological information is lacking for most species. Endemism is high, with 37% of species known from only one location or one country. Species richness was highest in the Northeast Atlantic, off the northwest coast of Africa (Morocco to Mauritania), the East China Sea, New Zealand and off the northwest coast of South America (Ecuador and Peru). Ghost sharks are predominately taken as by‐catch, but some targeted fishing and/or retention for the liver oil trade occurs. Species‐specific reporting, monitoring and management are required to assess population trends, and further investigation is needed on trade and use, particularly for higher risk species including the sicklefin chimaeras (genus Neoharriotta ) and the American Elephantfish ( Callorhynchus callorhynchus , Callorhinidae). Article in Journal/Newspaper Northeast Atlantic Wiley Online Library New Zealand Fish and Fisheries 22 2 391 412
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language English
description Abstract Ghost sharks (subclass Holocephali) remain a largely data‐poor group of cartilaginous fishes. The general paucity of attention may partially be related to identification and unresolved taxonomic issues, occurrence in the deep oceans, and their low value and interest in fisheries (which some notable exceptions). Here, we synthesize and assess the extinction risk of all known extant ghost sharks (52 species) by applying the IUCN Red List of Threatened Species Categories and Criteria. Ghost sharks have a low proportion of threatened (8%) and Near Threatened (8%) species, with most species (69%) assessed as Least Concern. The group still exhibits some data deficiency (15%), and biological information is lacking for most species. Endemism is high, with 37% of species known from only one location or one country. Species richness was highest in the Northeast Atlantic, off the northwest coast of Africa (Morocco to Mauritania), the East China Sea, New Zealand and off the northwest coast of South America (Ecuador and Peru). Ghost sharks are predominately taken as by‐catch, but some targeted fishing and/or retention for the liver oil trade occurs. Species‐specific reporting, monitoring and management are required to assess population trends, and further investigation is needed on trade and use, particularly for higher risk species including the sicklefin chimaeras (genus Neoharriotta ) and the American Elephantfish ( Callorhynchus callorhynchus , Callorhinidae).
format Article in Journal/Newspaper
author Finucci, Brittany
Cheok, Jessica
Ebert, David A.
Herman, Katelyn
Kyne, Peter M.
Dulvy, Nicholas K.
spellingShingle Finucci, Brittany
Cheok, Jessica
Ebert, David A.
Herman, Katelyn
Kyne, Peter M.
Dulvy, Nicholas K.
Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks
author_facet Finucci, Brittany
Cheok, Jessica
Ebert, David A.
Herman, Katelyn
Kyne, Peter M.
Dulvy, Nicholas K.
author_sort Finucci, Brittany
title Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks
title_short Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks
title_full Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks
title_fullStr Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks
title_full_unstemmed Ghosts of the deep – Biodiversity, fisheries, and extinction risk of ghost sharks
title_sort ghosts of the deep – biodiversity, fisheries, and extinction risk of ghost sharks
publisher Wiley
publishDate 2020
url http://dx.doi.org/10.1111/faf.12526
https://onlinelibrary.wiley.com/doi/pdf/10.1111/faf.12526
https://onlinelibrary.wiley.com/doi/full-xml/10.1111/faf.12526
geographic New Zealand
geographic_facet New Zealand
genre Northeast Atlantic
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op_source Fish and Fisheries
volume 22, issue 2, page 391-412
ISSN 1467-2960 1467-2979
op_rights http://onlinelibrary.wiley.com/termsAndConditions#vor
op_doi https://doi.org/10.1111/faf.12526
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