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Body size in freshwater crayfish: an intercontinental comparison


Richardson, AMM, Body size in freshwater crayfish: an intercontinental comparison, Freshwater Crayfish, 24, (1) pp. 43-47. ISSN 2076-4324 (2019) [Refereed Article]

DOI: doi:10.5869/fc.2019.v24-1.43


Body sizes (overall length) of 125 Australian and 230 North American freshwater crayfish were extracted from the literature in order to compare the two major radiations of freshwater crayfish. The size distribution of Australian species is strongly skewed to the right and contains at least 13 species that exceed the maximum size of North American crayfish, however the median size class (74 mm) is the same for both faunas. When the burrowing habits of each species are overlain on the distribution, the Australian fauna is shown to have a higher proportion of primary burrowers, and these are significantly smaller than North American primary burrowers. These differences are discussed in terms of the perceived absence of large predators in Australia, and the long term drying and unpredictability of the Australian climate, but no firm causes can be deduced.

Item Details

Item Type:Refereed Article
Keywords:freshwater crayfish, body size
Research Division:Environmental Sciences
Research Group:Environmental management
Research Field:Conservation and biodiversity
Objective Division:Expanding Knowledge
Objective Group:Expanding knowledge
Objective Field:Expanding knowledge in the environmental sciences
UTAS Author:Richardson, AMM (Associate Professor Alastair Richardson)
ID Code:152613
Year Published:2019
Web of Science® Times Cited:1
Deposited By:Zoology
Deposited On:2022-08-22
Last Modified:2022-08-22

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