Age and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil
Age and growth studies are fundamental to successful fisheries management. Zapteryx brevirostris (Muller & Henle, 1841) is distributed off the Brazilian continental shelf and this species is assessed as "Vulnerable" in the Red List of the International Union for the Conservation of Nat...
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Online Access: | http://hdl.handle.net/10400.1/11971 https://doi.org/10.1590/1982-0224-20170005 |
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ftunivalgarve:oai:sapientia.ualg.pt:10400.1/11971 2023-05-15T17:34:38+02:00 Age and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil Carmo, Wanessa P. D. Favaro, Luis Fernando Coelho, Rui 2018 http://hdl.handle.net/10400.1/11971 https://doi.org/10.1590/1982-0224-20170005 eng eng Soc Brasileira Ictiologia 1679-6225 http://hdl.handle.net/10400.1/11971 doi:10.1590/1982-0224-20170005 openAccess Western North-Atlantic Shark prionace-glauca Carcharhinus-plumbeus Sandbar shark Chondrichthyan fshes Reproductive-biology Scalloped hammerhead Sphyrna-lewini Iskenderun bay Raja-undulata article 2018 ftunivalgarve https://doi.org/10.1590/1982-0224-20170005 2022-05-30T08:48:27Z Age and growth studies are fundamental to successful fisheries management. Zapteryx brevirostris (Muller & Henle, 1841) is distributed off the Brazilian continental shelf and this species is assessed as "Vulnerable" in the Red List of the International Union for the Conservation of Nature (IUCN). Thus, the objective of this study was to present previously unknown information about the age and growth of Z. brevirostris that can be used for its management, conservation, and fisheries. A total of 162 specimens were sampled, with total lengths (TL) varying between 35.7 cm and 56 cm. The vertebrae were embedded in resin, sectioned in cuts with 0.5 mm thickness and the growth bands of the vertebrae were read under a light microscope. In the studied area, Z. brevirostris ages were estimated from 4 to 10 years according to vertebrae patterns. The species reaches its maximum asymptotic size (Linf) around 56 cm (56 cm for females and 50.37 cm for males). This is the first estimate of age and growth for a species of the Zapteryx genus, and the results support the hypothesis that this ray requires future management conservation, particularly due to its slow growth rate and consequent susceptibility to overexploitation. Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES); Portuguese Foundation for Science and Technology (FCT, Fundacao para a Ciencia e Tecnologia) [IF/00253/2014] Article in Journal/Newspaper North Atlantic Universidade do Algarve: Sapienta Neotropical Ichthyology 16 1 |
institution |
Open Polar |
collection |
Universidade do Algarve: Sapienta |
op_collection_id |
ftunivalgarve |
language |
English |
topic |
Western North-Atlantic Shark prionace-glauca Carcharhinus-plumbeus Sandbar shark Chondrichthyan fshes Reproductive-biology Scalloped hammerhead Sphyrna-lewini Iskenderun bay Raja-undulata |
spellingShingle |
Western North-Atlantic Shark prionace-glauca Carcharhinus-plumbeus Sandbar shark Chondrichthyan fshes Reproductive-biology Scalloped hammerhead Sphyrna-lewini Iskenderun bay Raja-undulata Carmo, Wanessa P. D. Favaro, Luis Fernando Coelho, Rui Age and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil |
topic_facet |
Western North-Atlantic Shark prionace-glauca Carcharhinus-plumbeus Sandbar shark Chondrichthyan fshes Reproductive-biology Scalloped hammerhead Sphyrna-lewini Iskenderun bay Raja-undulata |
description |
Age and growth studies are fundamental to successful fisheries management. Zapteryx brevirostris (Muller & Henle, 1841) is distributed off the Brazilian continental shelf and this species is assessed as "Vulnerable" in the Red List of the International Union for the Conservation of Nature (IUCN). Thus, the objective of this study was to present previously unknown information about the age and growth of Z. brevirostris that can be used for its management, conservation, and fisheries. A total of 162 specimens were sampled, with total lengths (TL) varying between 35.7 cm and 56 cm. The vertebrae were embedded in resin, sectioned in cuts with 0.5 mm thickness and the growth bands of the vertebrae were read under a light microscope. In the studied area, Z. brevirostris ages were estimated from 4 to 10 years according to vertebrae patterns. The species reaches its maximum asymptotic size (Linf) around 56 cm (56 cm for females and 50.37 cm for males). This is the first estimate of age and growth for a species of the Zapteryx genus, and the results support the hypothesis that this ray requires future management conservation, particularly due to its slow growth rate and consequent susceptibility to overexploitation. Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior (CAPES); Portuguese Foundation for Science and Technology (FCT, Fundacao para a Ciencia e Tecnologia) [IF/00253/2014] |
format |
Article in Journal/Newspaper |
author |
Carmo, Wanessa P. D. Favaro, Luis Fernando Coelho, Rui |
author_facet |
Carmo, Wanessa P. D. Favaro, Luis Fernando Coelho, Rui |
author_sort |
Carmo, Wanessa P. D. |
title |
Age and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil |
title_short |
Age and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil |
title_full |
Age and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil |
title_fullStr |
Age and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil |
title_full_unstemmed |
Age and growth of Zapteryx brevirostris (Elasmobranchii: Rhinobatidae) in southern Brazil |
title_sort |
age and growth of zapteryx brevirostris (elasmobranchii: rhinobatidae) in southern brazil |
publisher |
Soc Brasileira Ictiologia |
publishDate |
2018 |
url |
http://hdl.handle.net/10400.1/11971 https://doi.org/10.1590/1982-0224-20170005 |
genre |
North Atlantic |
genre_facet |
North Atlantic |
op_relation |
1679-6225 http://hdl.handle.net/10400.1/11971 doi:10.1590/1982-0224-20170005 |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1590/1982-0224-20170005 |
container_title |
Neotropical Ichthyology |
container_volume |
16 |
container_issue |
1 |
_version_ |
1766133518093516800 |