Does diet in Celtic Sea fishes reflect prey availability?
Feeding preferences of Celtic Sea fishes were investigated using a database of stomach content records, collected between 1977 and 1994. The diet of cod Gadus morhua , hake Merluccius merluccius , megrim Lepidorhombus whiffiagonis , whiting Merlangius merlangus and saithe Pollachius virens changed m...
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Language: | English |
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Blackwell Publishing Ltd
2003
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Online Access: | https://doi.org/10.1111/j.1095-8649.2003.00204.x http://ecite.utas.edu.au/116259 |
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ftunivtasecite:oai:ecite.utas.edu.au:116259 2023-05-15T16:19:16+02:00 Does diet in Celtic Sea fishes reflect prey availability? Pinnegar, JK Trenkel, VM Tidd, AN Dawson, WA Du Buit, MH 2003 https://doi.org/10.1111/j.1095-8649.2003.00204.x http://ecite.utas.edu.au/116259 en eng Blackwell Publishing Ltd http://dx.doi.org/10.1111/j.1095-8649.2003.00204.x Pinnegar, JK and Trenkel, VM and Tidd, AN and Dawson, WA and Du Buit, MH, Does diet in Celtic Sea fishes reflect prey availability?, Journal of Fish Biology, 63, (s1) pp. 197-212. ISSN 0022-1112 (2003) [Refereed Article] http://ecite.utas.edu.au/116259 Agricultural and Veterinary Sciences Fisheries Sciences Fisheries Management Refereed Article PeerReviewed 2003 ftunivtasecite https://doi.org/10.1111/j.1095-8649.2003.00204.x 2019-12-13T22:15:52Z Feeding preferences of Celtic Sea fishes were investigated using a database of stomach content records, collected between 1977 and 1994. The diet of cod Gadus morhua , hake Merluccius merluccius , megrim Lepidorhombus whiffiagonis , whiting Merlangius merlangus and saithe Pollachius virens changed markedly as the animals grew larger, and although large predators generally chose larger bodied prey, the variability of prey sizes consumed also increased. Large predators continued to select small, low value, benthic prey ( e.g . Callionymus spp. and Trisopterus spp.) which were easier to catch, rather than larger, more energy lucrative pelagic prey ( e.g . mackerel Scomber scombrus ), even though these pelagic prey-fishes were nearly always available and were often very abundant. Stock estimates of the International Council for the Exploration of the Sea and U.K. groundfish survey catches were used as indices of prey abundance. Blue-whiting Micromesistius poutassou and other small pelagic fishes ( Argentina spp. and clupeoids) were identified as being particularly important, and were consumed by some predators more often than would be expected given the abundance of these prey in the environment. There was no evidence for density-dependent feeding by predators on mackerel and only hake exhibited density-dependent feeding on horse-mackerel. Hake, cod and megrim consumed more blue-whiting when this prey was at higher abundance in the environment. In choosing what prey to consume, predators must balance costs and benefits, considering the quality of prey and the energy expended during search, capture and handling. Article in Journal/Newspaper Gadus morhua eCite UTAS (University of Tasmania) Argentina Hake ENVELOPE(15.612,15.612,66.797,66.797) Journal of Fish Biology 63 197 212 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Agricultural and Veterinary Sciences Fisheries Sciences Fisheries Management |
spellingShingle |
Agricultural and Veterinary Sciences Fisheries Sciences Fisheries Management Pinnegar, JK Trenkel, VM Tidd, AN Dawson, WA Du Buit, MH Does diet in Celtic Sea fishes reflect prey availability? |
topic_facet |
Agricultural and Veterinary Sciences Fisheries Sciences Fisheries Management |
description |
Feeding preferences of Celtic Sea fishes were investigated using a database of stomach content records, collected between 1977 and 1994. The diet of cod Gadus morhua , hake Merluccius merluccius , megrim Lepidorhombus whiffiagonis , whiting Merlangius merlangus and saithe Pollachius virens changed markedly as the animals grew larger, and although large predators generally chose larger bodied prey, the variability of prey sizes consumed also increased. Large predators continued to select small, low value, benthic prey ( e.g . Callionymus spp. and Trisopterus spp.) which were easier to catch, rather than larger, more energy lucrative pelagic prey ( e.g . mackerel Scomber scombrus ), even though these pelagic prey-fishes were nearly always available and were often very abundant. Stock estimates of the International Council for the Exploration of the Sea and U.K. groundfish survey catches were used as indices of prey abundance. Blue-whiting Micromesistius poutassou and other small pelagic fishes ( Argentina spp. and clupeoids) were identified as being particularly important, and were consumed by some predators more often than would be expected given the abundance of these prey in the environment. There was no evidence for density-dependent feeding by predators on mackerel and only hake exhibited density-dependent feeding on horse-mackerel. Hake, cod and megrim consumed more blue-whiting when this prey was at higher abundance in the environment. In choosing what prey to consume, predators must balance costs and benefits, considering the quality of prey and the energy expended during search, capture and handling. |
format |
Article in Journal/Newspaper |
author |
Pinnegar, JK Trenkel, VM Tidd, AN Dawson, WA Du Buit, MH |
author_facet |
Pinnegar, JK Trenkel, VM Tidd, AN Dawson, WA Du Buit, MH |
author_sort |
Pinnegar, JK |
title |
Does diet in Celtic Sea fishes reflect prey availability? |
title_short |
Does diet in Celtic Sea fishes reflect prey availability? |
title_full |
Does diet in Celtic Sea fishes reflect prey availability? |
title_fullStr |
Does diet in Celtic Sea fishes reflect prey availability? |
title_full_unstemmed |
Does diet in Celtic Sea fishes reflect prey availability? |
title_sort |
does diet in celtic sea fishes reflect prey availability? |
publisher |
Blackwell Publishing Ltd |
publishDate |
2003 |
url |
https://doi.org/10.1111/j.1095-8649.2003.00204.x http://ecite.utas.edu.au/116259 |
long_lat |
ENVELOPE(15.612,15.612,66.797,66.797) |
geographic |
Argentina Hake |
geographic_facet |
Argentina Hake |
genre |
Gadus morhua |
genre_facet |
Gadus morhua |
op_relation |
http://dx.doi.org/10.1111/j.1095-8649.2003.00204.x Pinnegar, JK and Trenkel, VM and Tidd, AN and Dawson, WA and Du Buit, MH, Does diet in Celtic Sea fishes reflect prey availability?, Journal of Fish Biology, 63, (s1) pp. 197-212. ISSN 0022-1112 (2003) [Refereed Article] http://ecite.utas.edu.au/116259 |
op_doi |
https://doi.org/10.1111/j.1095-8649.2003.00204.x |
container_title |
Journal of Fish Biology |
container_volume |
63 |
container_start_page |
197 |
op_container_end_page |
212 |
_version_ |
1766005635337420800 |