Trends in body size across an environmental gradient: a differential response in scavenging and non-scavenging demersal deep-sea fish
Body size trends across environmental gradients are widely reported but poorly understood. Here, we investigate contrasting relationships between size (body mass) and depth in the scavenging and predatory demersal ichthyofauna (800-4800 m) of the North-east Atlantic. The mean size of scavenging fish...
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ftuglasgow:oai:eprints.gla.ac.uk:4789 2023-05-15T17:38:28+02:00 Trends in body size across an environmental gradient: a differential response in scavenging and non-scavenging demersal deep-sea fish Collins, M.A. Bailey, D.M. Ruxton, G.D. Priede, I.G. 2005 text https://eprints.gla.ac.uk/4789/ https://eprints.gla.ac.uk/4789/1/4789.pdf https://doi.org/10.1098/rspb.2005.3189 en eng The Royal Society https://eprints.gla.ac.uk/4789/1/4789.pdf Collins, M.A., Bailey, D.M. <http://eprints.gla.ac.uk/view/author/3820.html> , Ruxton, G.D. <http://eprints.gla.ac.uk/view/author/5305.html> and Priede, I.G. (2005) Trends in body size across an environmental gradient: a differential response in scavenging and non-scavenging demersal deep-sea fish. Proceedings of the Royal Society of London Series B: Biological Sciences <https://eprints.gla.ac.uk/view/journal_volume/Proceedings_of_the_Royal_Society_of_London_Series_B=3A_Biological_Sciences.html>, 272(1576), pp. 2051-2057. (doi:10.1098/rspb.2005.3189 <https://doi.org/10.1098/rspb.2005.3189>) QL Zoology Articles PeerReviewed 2005 ftuglasgow https://doi.org/10.1098/rspb.2005.3189 2022-09-22T22:09:10Z Body size trends across environmental gradients are widely reported but poorly understood. Here, we investigate contrasting relationships between size (body mass) and depth in the scavenging and predatory demersal ichthyofauna (800-4800 m) of the North-east Atlantic. The mean size of scavenging fish, identified as those regularly attracted to baited cameras, increased significantly with depth, while in nonscavengers there was a significant decline in size. The increase in scavenger size is a consequence of both intra and inter-specific effects. The observation of opposing relationships, in different functional groups, across the same environmental gradient indicates ecological rather than physiological causes. Simple energetic models indicate that the dissimilarity can be explained by different patterns of food distribution. While food availability declines with depth for both groups, the food is likely to be in large, randomly distributed packages for scavengers and as smaller but more evenly distributed items for predators. Larger size in scavengers permits higher swimming speeds, greater endurance as a consequence of larger energy reserves and lower mass specific metabolic rate, factors that are critical to survival on sporadic food items Article in Journal/Newspaper North East Atlantic University of Glasgow: Enlighten - Publications Proceedings of the Royal Society B: Biological Sciences 272 1576 2051 2057 |
institution |
Open Polar |
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University of Glasgow: Enlighten - Publications |
op_collection_id |
ftuglasgow |
language |
English |
topic |
QL Zoology |
spellingShingle |
QL Zoology Collins, M.A. Bailey, D.M. Ruxton, G.D. Priede, I.G. Trends in body size across an environmental gradient: a differential response in scavenging and non-scavenging demersal deep-sea fish |
topic_facet |
QL Zoology |
description |
Body size trends across environmental gradients are widely reported but poorly understood. Here, we investigate contrasting relationships between size (body mass) and depth in the scavenging and predatory demersal ichthyofauna (800-4800 m) of the North-east Atlantic. The mean size of scavenging fish, identified as those regularly attracted to baited cameras, increased significantly with depth, while in nonscavengers there was a significant decline in size. The increase in scavenger size is a consequence of both intra and inter-specific effects. The observation of opposing relationships, in different functional groups, across the same environmental gradient indicates ecological rather than physiological causes. Simple energetic models indicate that the dissimilarity can be explained by different patterns of food distribution. While food availability declines with depth for both groups, the food is likely to be in large, randomly distributed packages for scavengers and as smaller but more evenly distributed items for predators. Larger size in scavengers permits higher swimming speeds, greater endurance as a consequence of larger energy reserves and lower mass specific metabolic rate, factors that are critical to survival on sporadic food items |
format |
Article in Journal/Newspaper |
author |
Collins, M.A. Bailey, D.M. Ruxton, G.D. Priede, I.G. |
author_facet |
Collins, M.A. Bailey, D.M. Ruxton, G.D. Priede, I.G. |
author_sort |
Collins, M.A. |
title |
Trends in body size across an environmental gradient: a differential response in scavenging and non-scavenging demersal deep-sea fish |
title_short |
Trends in body size across an environmental gradient: a differential response in scavenging and non-scavenging demersal deep-sea fish |
title_full |
Trends in body size across an environmental gradient: a differential response in scavenging and non-scavenging demersal deep-sea fish |
title_fullStr |
Trends in body size across an environmental gradient: a differential response in scavenging and non-scavenging demersal deep-sea fish |
title_full_unstemmed |
Trends in body size across an environmental gradient: a differential response in scavenging and non-scavenging demersal deep-sea fish |
title_sort |
trends in body size across an environmental gradient: a differential response in scavenging and non-scavenging demersal deep-sea fish |
publisher |
The Royal Society |
publishDate |
2005 |
url |
https://eprints.gla.ac.uk/4789/ https://eprints.gla.ac.uk/4789/1/4789.pdf https://doi.org/10.1098/rspb.2005.3189 |
genre |
North East Atlantic |
genre_facet |
North East Atlantic |
op_relation |
https://eprints.gla.ac.uk/4789/1/4789.pdf Collins, M.A., Bailey, D.M. <http://eprints.gla.ac.uk/view/author/3820.html> , Ruxton, G.D. <http://eprints.gla.ac.uk/view/author/5305.html> and Priede, I.G. (2005) Trends in body size across an environmental gradient: a differential response in scavenging and non-scavenging demersal deep-sea fish. Proceedings of the Royal Society of London Series B: Biological Sciences <https://eprints.gla.ac.uk/view/journal_volume/Proceedings_of_the_Royal_Society_of_London_Series_B=3A_Biological_Sciences.html>, 272(1576), pp. 2051-2057. (doi:10.1098/rspb.2005.3189 <https://doi.org/10.1098/rspb.2005.3189>) |
op_doi |
https://doi.org/10.1098/rspb.2005.3189 |
container_title |
Proceedings of the Royal Society B: Biological Sciences |
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272 |
container_issue |
1576 |
container_start_page |
2051 |
op_container_end_page |
2057 |
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