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A radio telemetry study of movement in the giant Tasmanian freshwater crayfish, Astacopsis gouldi

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Webb, M and Richardson, AMM (2004) A radio telemetry study of movement in the giant Tasmanian freshwater crayfish, Astacopsis gouldi. Freshwater Crayfish: a journal of astacology, 14. pp. 197-204.

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Abstract

The movements of eight adult Tasmanian giant crayfish, Astacopsis gouldi, (carapace lengths: 120-191 mm) were recorded using radio telemetry. Transmitters were attached to the animals' carapaces and their positions were fixed at least daily. Tracking durations varied from 14-144 days, depending on the life span of the transmitters. All animals showed substantial periods of inactivity, lasting from 1 to 10 days; in one animal, inactivity appeared to be related to brooding. Activity was not strongly nocturnal, and when active, the animals moved large distances. One animal covered 700m in a single night, and the stream lengths over which animals were active during the 5-month study ranged from 90-2200m. Animals often returned to the same refuge after excursions.

Item Type: Article
Keywords: telemetry, behaviour, crayfish activity
Journal or Publication Title: Freshwater Crayfish: a journal of astacology
Page Range: pp. 197-204
Date Deposited: 18 Jan 2007
Last Modified: 18 Nov 2014 03:12
URI: http://eprints.utas.edu.au/id/eprint/631
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