Trophic ecology of an abundant predator and its relationship with fisheries

Autores
Barnett, Adam; Yick, Jonah L.; Abrantes, Kátya G.; Awruch, Cynthia Andrea
Año de publicación
2013
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Trophic studies are key components in animal ecology and fisheries research. Although stomach samples are often obtained from fisheries, diet studies that consider the influence of fisheries on dietary results are still lacking. Here, the diet of the draughtboard shark Cephaloscyllium laticeps, an abundant mesopredator in Tasmanian waters, was investigated. Stomach samples were obtained from gillnet and craypot fisheries sourced from 4 regions: central (100% gillnet), east coast (63% gillnet, 37% craypot), northwest (100% gillnet), and southwest Tasmania (100% craypot). Overall, C. laticeps consumed the same prey types in all regions, but the importance of some prey varied significantly between regions. Generalized linear models showed that region was the main factor affecting prey abundance in the diet. Fishing method had some influence on the abundance of some prey (crabs, octopus, and other molluscs (gastropods and bivalves)), but the effect of fishing method on pot-related species such as Jasus edwardsii (lobster) and octopus was not as prevalent as expected. The common occurrence of C. laticeps as a bycatch species and its high consumption of targeted fishery species (lobsters and octopus) indicates that C. laticeps has a strong interaction with the fisheries. Therefore, the relationship between these fishery species and C. laticeps should be considered in food web studies in Tasmanian waters.
Fil: Barnett, Adam. Deakin University. School Of Life And Environmental Sciences; Australia. James Cook University. School of Marine and Tropical Biology. Estuary and Tidal Wetland Ecosystems Research Group. Centre for Tropical Water & Aquatic Ecosystem Research; Australia. OceansIQ; Australia
Fil: Yick, Jonah L.. Inland Fisheries Service; Australia
Fil: Abrantes, Kátya G.. James Cook University. School of Marine and Tropical Biology. Estuary and Tidal Wetland Ecosystems Research Group. Centre for Tropical Water & Aquatic Ecosystem Research; Australia
Fil: Awruch, Cynthia Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. University of Tasmania. School of Zoology; Australia
Materia
SHARK
NICHE SEPARATION
PREDATOR - PREY RELATIONSHIP
FOOD WEB
Nivel de accesibilidad
acceso embargado
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/3253
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Trophic ecology of an abundant predator and its relationship with fisheriesBarnett, AdamYick, Jonah L.Abrantes, Kátya G.Awruch, Cynthia AndreaSHARKNICHE SEPARATIONPREDATOR - PREY RELATIONSHIPFOOD WEBhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Trophic studies are key components in animal ecology and fisheries research. Although stomach samples are often obtained from fisheries, diet studies that consider the influence of fisheries on dietary results are still lacking. Here, the diet of the draughtboard shark Cephaloscyllium laticeps, an abundant mesopredator in Tasmanian waters, was investigated. Stomach samples were obtained from gillnet and craypot fisheries sourced from 4 regions: central (100% gillnet), east coast (63% gillnet, 37% craypot), northwest (100% gillnet), and southwest Tasmania (100% craypot). Overall, C. laticeps consumed the same prey types in all regions, but the importance of some prey varied significantly between regions. Generalized linear models showed that region was the main factor affecting prey abundance in the diet. Fishing method had some influence on the abundance of some prey (crabs, octopus, and other molluscs (gastropods and bivalves)), but the effect of fishing method on pot-related species such as Jasus edwardsii (lobster) and octopus was not as prevalent as expected. The common occurrence of C. laticeps as a bycatch species and its high consumption of targeted fishery species (lobsters and octopus) indicates that C. laticeps has a strong interaction with the fisheries. Therefore, the relationship between these fishery species and C. laticeps should be considered in food web studies in Tasmanian waters.Fil: Barnett, Adam. Deakin University. School Of Life And Environmental Sciences; Australia. James Cook University. School of Marine and Tropical Biology. Estuary and Tidal Wetland Ecosystems Research Group. Centre for Tropical Water & Aquatic Ecosystem Research; Australia. OceansIQ; AustraliaFil: Yick, Jonah L.. Inland Fisheries Service; AustraliaFil: Abrantes, Kátya G.. James Cook University. School of Marine and Tropical Biology. Estuary and Tidal Wetland Ecosystems Research Group. Centre for Tropical Water & Aquatic Ecosystem Research; AustraliaFil: Awruch, Cynthia Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. University of Tasmania. School of Zoology; AustraliaInter-Research2013-12info:eu-repo/date/embargoEnd/2018-12-31info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/3253Barnett, Adam; Yick, Jonah L.; Abrantes, Kátya G.; Awruch, Cynthia Andrea; Trophic ecology of an abundant predator and its relationship with fisheries; Inter-Research; Marine Ecology Progress Series; 494; 12-2013; 241-2480171-8630enginfo:eu-repo/semantics/altIdentifier/url/http://www.int-res.com/abstracts/meps/v494/p241-248/info:eu-repo/semantics/altIdentifier/doi/doi:10.3354/meps10577info:eu-repo/semantics/embargoedAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:00:41Zoai:ri.conicet.gov.ar:11336/3253instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:00:41.975CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Trophic ecology of an abundant predator and its relationship with fisheries
title Trophic ecology of an abundant predator and its relationship with fisheries
spellingShingle Trophic ecology of an abundant predator and its relationship with fisheries
Barnett, Adam
SHARK
NICHE SEPARATION
PREDATOR - PREY RELATIONSHIP
FOOD WEB
title_short Trophic ecology of an abundant predator and its relationship with fisheries
title_full Trophic ecology of an abundant predator and its relationship with fisheries
title_fullStr Trophic ecology of an abundant predator and its relationship with fisheries
title_full_unstemmed Trophic ecology of an abundant predator and its relationship with fisheries
title_sort Trophic ecology of an abundant predator and its relationship with fisheries
dc.creator.none.fl_str_mv Barnett, Adam
Yick, Jonah L.
Abrantes, Kátya G.
Awruch, Cynthia Andrea
author Barnett, Adam
author_facet Barnett, Adam
Yick, Jonah L.
Abrantes, Kátya G.
Awruch, Cynthia Andrea
author_role author
author2 Yick, Jonah L.
Abrantes, Kátya G.
Awruch, Cynthia Andrea
author2_role author
author
author
dc.subject.none.fl_str_mv SHARK
NICHE SEPARATION
PREDATOR - PREY RELATIONSHIP
FOOD WEB
topic SHARK
NICHE SEPARATION
PREDATOR - PREY RELATIONSHIP
FOOD WEB
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Trophic studies are key components in animal ecology and fisheries research. Although stomach samples are often obtained from fisheries, diet studies that consider the influence of fisheries on dietary results are still lacking. Here, the diet of the draughtboard shark Cephaloscyllium laticeps, an abundant mesopredator in Tasmanian waters, was investigated. Stomach samples were obtained from gillnet and craypot fisheries sourced from 4 regions: central (100% gillnet), east coast (63% gillnet, 37% craypot), northwest (100% gillnet), and southwest Tasmania (100% craypot). Overall, C. laticeps consumed the same prey types in all regions, but the importance of some prey varied significantly between regions. Generalized linear models showed that region was the main factor affecting prey abundance in the diet. Fishing method had some influence on the abundance of some prey (crabs, octopus, and other molluscs (gastropods and bivalves)), but the effect of fishing method on pot-related species such as Jasus edwardsii (lobster) and octopus was not as prevalent as expected. The common occurrence of C. laticeps as a bycatch species and its high consumption of targeted fishery species (lobsters and octopus) indicates that C. laticeps has a strong interaction with the fisheries. Therefore, the relationship between these fishery species and C. laticeps should be considered in food web studies in Tasmanian waters.
Fil: Barnett, Adam. Deakin University. School Of Life And Environmental Sciences; Australia. James Cook University. School of Marine and Tropical Biology. Estuary and Tidal Wetland Ecosystems Research Group. Centre for Tropical Water & Aquatic Ecosystem Research; Australia. OceansIQ; Australia
Fil: Yick, Jonah L.. Inland Fisheries Service; Australia
Fil: Abrantes, Kátya G.. James Cook University. School of Marine and Tropical Biology. Estuary and Tidal Wetland Ecosystems Research Group. Centre for Tropical Water & Aquatic Ecosystem Research; Australia
Fil: Awruch, Cynthia Andrea. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Nacional Patagónico; Argentina. University of Tasmania. School of Zoology; Australia
description Trophic studies are key components in animal ecology and fisheries research. Although stomach samples are often obtained from fisheries, diet studies that consider the influence of fisheries on dietary results are still lacking. Here, the diet of the draughtboard shark Cephaloscyllium laticeps, an abundant mesopredator in Tasmanian waters, was investigated. Stomach samples were obtained from gillnet and craypot fisheries sourced from 4 regions: central (100% gillnet), east coast (63% gillnet, 37% craypot), northwest (100% gillnet), and southwest Tasmania (100% craypot). Overall, C. laticeps consumed the same prey types in all regions, but the importance of some prey varied significantly between regions. Generalized linear models showed that region was the main factor affecting prey abundance in the diet. Fishing method had some influence on the abundance of some prey (crabs, octopus, and other molluscs (gastropods and bivalves)), but the effect of fishing method on pot-related species such as Jasus edwardsii (lobster) and octopus was not as prevalent as expected. The common occurrence of C. laticeps as a bycatch species and its high consumption of targeted fishery species (lobsters and octopus) indicates that C. laticeps has a strong interaction with the fisheries. Therefore, the relationship between these fishery species and C. laticeps should be considered in food web studies in Tasmanian waters.
publishDate 2013
dc.date.none.fl_str_mv 2013-12
info:eu-repo/date/embargoEnd/2018-12-31
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/3253
Barnett, Adam; Yick, Jonah L.; Abrantes, Kátya G.; Awruch, Cynthia Andrea; Trophic ecology of an abundant predator and its relationship with fisheries; Inter-Research; Marine Ecology Progress Series; 494; 12-2013; 241-248
0171-8630
url http://hdl.handle.net/11336/3253
identifier_str_mv Barnett, Adam; Yick, Jonah L.; Abrantes, Kátya G.; Awruch, Cynthia Andrea; Trophic ecology of an abundant predator and its relationship with fisheries; Inter-Research; Marine Ecology Progress Series; 494; 12-2013; 241-248
0171-8630
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/http://www.int-res.com/abstracts/meps/v494/p241-248/
info:eu-repo/semantics/altIdentifier/doi/doi:10.3354/meps10577
dc.rights.none.fl_str_mv info:eu-repo/semantics/embargoedAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv embargoedAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Inter-Research
publisher.none.fl_str_mv Inter-Research
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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