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On the Muscle and Hepatopancreas Weight in Crayfish (Astacus astacus L.) In Finland
Lahti E 
Published Online: 6/1/2020
Abstract
The weights of muscle and hepatopancreas were measured in crayfish (Astacus astacus L.) during different seasons in central Finland. The total muscle (tail and chelae muscle) weight did not change significantly during the seasons. In males the total muscle weight was higher than in females due to the greater chelae size. The relative muscle weight (as a percentage of body weight) was at its highest in summer and decreased in autumn when the body weight was increased by gonadal maturation. The relative muscle weight in males was length dependent (positively). The relative hepatopancreas weight was at its highest in May-June, before molting. Absolute weight decreased later in summer (in females) or in autumn (in males). In males the relative hepatopancreas weight was also length dependent (negatively).
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Lahti E. (1988). On the Muscle and Hepatopancreas Weight in Crayfish (Astacus astacus L) In Finland. Freshwater Crayfish 7(1):319-325. doi: 10.5869/fc.1988.v7.319
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Published Online: 6/1/2020
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