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Optimum water temperature for intensive production of Austropotamobius pallipes (Lereboullet) juveniles
Policar T, Smyth J, Flanigan M, Kozák P and Kouba A 
Published Online: 12/31/2010
Abstract
Over a 112 day study (from June 29 to Oct 18, 2007), hatchlings of Austropotamobius pallipes were reared intensively at 20.3, 18.3 and 13.3°C in total recirculating, semi-recirculating, and flow-though systems, respectively. Highest growth (SGR = 3.2 ± 0.1% d-1) and survival (70.0 ± 3.0%) of hatchlings occurred at 20.3°C. Lowest growth (SGR = 2.0 ± 0.1% d-1) and survival (37.5 ± 3.0%) were observed at 13.3°C, the ambient summer water temperature in Ireland. After the end of the hatchling rearing study, summerlings from both higher temperatures were reared under controlled conditions during a 196 day study, from Oct 18 to May 1, with good survival (80 ± 1.0 %) and growth (SGR = 0.5 ± 0.01 %). Size of summerling A. pallipes reared in captivity were twice as large as comparable age A. pallipes collected from the wild. Summerling A. pallipes were reared under controlled conditions to maturation with good average survival and SGR 87.5 ± 1.5% and 0.4 ± 0.02% d-1, respectively. After the first mating of reared crayfish, 30% of females laid eggs at an age of 16 months.
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Policar T, Smyth J, Flanigan M, Kozák P and Kouba A. (2010). Optimum water temperature for intensive production of Austropotamobius pallipes (Lereboullet) juveniles. Freshwater Crayfish 17(1):51-55. doi: 10.5869/fc.2010.v17.51
Author Information
Policar T, Smyth J, Flanigan M, Kozák P and Kouba A
Publication History
Manuscript Submitted: 12/1/2008
Manuscript Accepted: 8/27/2009
Published Online: 12/31/2010
Published in Print: 12/31/2010
Funding Information
No specific funding statement is available for this article.