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Natural mortality, growth parameters, and environmental temperature in fishes revisited

Biomedical Sciences Research Institute Computer Science Research Institute Environmental Sciences Research Institute Nanotechnology & Advanced Materials Research Institute

Griffiths, David and Harrod, Chris (2007) Natural mortality, growth parameters, and environmental temperature in fishes revisited. CANADIAN JOURNAL OF FISHERIES AND AQUATIC SCIENCES, 64 (2). pp. 249-255. [Journal article]

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DOI: 10.1139/F07-002

Abstract

Pauly (1980. J. Cons. Int. Explor. Mer, 39: 175-192) showed that natural mortality rates in fish could be predicted from body growth parameters and environmental temperature but found no evidence for ecological or taxonomic influences. Using an updated database and techniques that avoid some of the earlier analytical problems, we confirm Pauly's conclusion that mortality is correlated with growth and temperature. A path model supports the role of ecological effects on mortality. A phylogenetic effect is also apparent: perciform fishes occupy warmer environments than other species, but in the predator-rich reef habitat they suffer much lower mortality rates. Species that are cryptic or hide in burrows or have morphological defences against predators show the lowest mortality rates.

Item Type:Journal article
Faculties and Schools:Faculty of Life and Health Sciences
Faculty of Life and Health Sciences > School of Environmental Sciences
Research Institutes and Groups:Environmental Sciences Research Institute > Freshwater Sciences
ID Code:13739
Deposited By:Mrs Linda Allen
Deposited On:31 May 2010 10:56
Last Modified:28 Mar 2012 16:27

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