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- Title
Effect of dietary protein and lipid levels on gonadal development of female redclaw crayfish Cherax quadricarinatus.
- Authors
Rodríguez‐González, Hervey; Hernández‐Llamas, Alfredo; García‐Ulloa, Manuel; Villarreal, Humberto
- Abstract
The effect of two crude dietary protein (26% and 32% P) and two lipid levels (4.7% and 12% L) on gonadal development of female redclaw crayfish Cherax quadricarinatus was determined. The gonadosomatic index ( GSI), hepatosomatic index ( HSI), biochemical composition of gonad and hepatopancreas, oocyte diameter and frequency of the developmental stage of oocytes were analysed. The GSI was significantly less using 26% P to 4.7% L. A significant interaction between P and L content was found for GSI. A significantly higher HSI value was obtained when L was 12%. P content in the hepatopancreas was significantly higher using 32% P and 4.7% L. The maximum L content in the hepatopancreas was obtained from the 32% P and 12% L diet. A significant interaction between P and L content was found for L content in the hepatopancreas. A higher frequency of post-vitellogenic oocytes was obtained with diets containing 32% P. There was an interaction between dietary P and L level causing lipid accumulation in the hepatopancreas and changes in GSI. For an optimum 32% P, excess dietary lipid is bioaccumulated in the hepatopancreas, indicating that there is excess available energy. When the P and L levels are restricted, there is a limited gonad development, thus affecting overall reproduction in female C. quadricarinatus.
- Subjects
CHERAX quadricarinatus; LOW-protein diet; LIPIDS; GONADS; DEVELOPMENT of crustaceans; FEMALE reproductive organs
- Publication
Aquaculture Research, 2013, Vol 45, Issue 1, p80
- ISSN
1355-557X
- Publication type
Article
- DOI
10.1111/j.1365-2109.2012.03206.x