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Secondary stress responses in Indian major carps Labeo rohita (Hamilton) , Catla catla (Hamilton) and Cirrhinus mrigala (Hamilton) fry to increasing packing densities
Author(s) -
Chatterjee Nirupama,
Pal Asim K,
Das Tilak,
Mohammed Manush S,
Sarma Kamal,
Venkateshwarlu Gudipati,
Mukherjee Subhas C
Publication year - 2006
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.2006.01469.x
Subject(s) - catla , labeo , biology , lactate dehydrogenase , glycogen , malate dehydrogenase , veterinary medicine , carp , rutilus , zoology , food science , biochemistry , enzyme , fishery , fish <actinopterygii> , medicine
Glycogen content and metabolic enzyme activities viz. lactate dehydrogenase (LDH), malate dehydrogenase (MDH), aspartate amino transferase (AST) and alanine amino transferase (ALT) in Indian major carps, Labeo rohita , Catla catla and Cirrhinus mrigala , were investigated after a 6 h transportation trial to compare the species‐specific variation and the effect of increased packing density on the metabolism. Fish (45±5 mm, 0.5±0.1 g) were packed in three densities (100, 150 and 200 L −1 ) for the experiment, and 12 specimens of each species were randomly sampled from all the treatments at the end of transportation. The glycogen content of L. rohita ingerlings decreased significantly ( P <0.05) with increasing packing density. The activities of enzymes LDH, MDH, AST and ALT showed a rising trend with increasing packing density in all the three species. Species‐specific differences were observed in various tested parameters at the lowest packing density (100 fry L −1 ). Alanine amino transferase and LDH activities were significantly ( P <0.05) lower in C. mrigala as compared with the other two species. However, glycogen reserves and MDH activity were not significantly different ( P >0.05) among the species. The present study reveals that the optimum packing density for Indian major carp fry (100 fry L −1 ) for transportation up to 6 h and metabolic regimes are species specific during transportation.