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
- Institución
- Consejo Nacional de Investigaciones Científicas y Técnicas
- OAI Identificador
- oai:ri.conicet.gov.ar:11336/3253
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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 Técnicas2025-09-29T09:32:42Zoai: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:34982025-09-29 09:32:42.867CONICET 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 |
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CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas |
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13.070432 |