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Growth and survival of juvenile Astacus astacus L. at optimized water temperature
Gydemo, R.; Westin, L. (1989). Growth and survival of juvenile Astacus astacus L. at optimized water temperature, in: De Pauw, N. et al. (Ed.) Aquaculture: a biotechnology in progress: volume 1. pp. 383-391
In: De Pauw, N. et al. (Ed.) (1989). Aquaculture: a biotechnology in progress: volume 1. European Aquaculture Society: Bredene, Belgium. ISBN 90-71625-03-6. 1-592 pp., more

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Document type: Conference paper

Keyword
    Marine

Authors  Top 
  • Gydemo, R.
  • Westin, L.

Abstract
    In an experiment on growth and survival of juvenile Astacus astacus, stage 3 larvae were exposed to optimized water temperature for 9 months in different densities. Males showed faster growth than females. The length and weight ranges were wide for both sexes. A high initial density results in poorer growth even after the numbers have stabilized. The weight-length relation (condition) decreased with increasing initial density of the groups.The highest mortality occurred during the first period and increased again during the last experimental period, indicating the necessity of sorting or decreasing the density.

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