Authors : R. M. Ganeshwade
Page Nos : 09-15
Description :
Freshwater fish Mystus malabricus (Jordan) collected from Krishna River near Audumber. The seasonal variations in the biochemical contents of muscles were analyzed. Protein level in the muscles does not shows any drastic change but its higher values are observed in the month April (20.4613 ± 0.0286) and lowest value (15.43222 ± 0.05779) in the month of November. Glycogen level decreases from January to October, again it increases from the month of November onwards. Its highest value was found in the month of December (0.46929± 5.2275-3) and lowest value was observed in the month of September (0.07318 ± 3.5619-3). Ascorbic acid content in the muscles is increases from January to June (0.07254 ± 4.6256-3 to 0.4622 ± 7.4283-3). Again the same increase was observed from the month July to December (0.15158± 6.45495-3 to 0.4469 ± 6.6271-3). It suggests that during preparatory period its value increases and reaches peak during breeding season. Lipid level decreases drastically during pre-spawning period (Feb- July) and post-spawning period (October- December). Its highest level is found in the months January (0.1320 ± 2.945-3) , August (0.15864 ±3.2416-3) and September ( 0.2468 ± 4.5477-3). During pre-spawning lipid content is transferred to gonads for the process oogenesis and spermatogenesis. Decreased level is also due to meet the energy demand
KEY WORDS: Mystus malabricus, Seasonal variations and Biochemical Contents
