Vol. 11, Issue 11 (2022)

Author(s):
Ningthoukhongjam Soranganba

Abstract:
The present investigation was taken up to determine the seasonal change in high density lipoproteins (HDL) in blood plasma, muscle, gonadal and hepatic tissues in 1+ and 2+ year’s age groups of Amur common carp, Cyprinus carpio haematopterus in Tarai region of Uttarakhand with physiological changes. Seasonal observations of water quality parameters of the trial ponds were carried out. Four different seasons – summer (July), autumn (October), winter (January) and spring (March) were chosen for sampling. HDL concentrations increased from the initial detection in summer until winter season. Comparison of physiological indices in 1+ and 2+ year’s age groups showed two peak with spring being the highest followed by summer season. Inverse correlation of GSI and HSI was observed irrespective of age and sex in all seasons. The HDL level showed significant positive correlation with GSI with higher magnitude in 2+ than 1+ year’s age group. Based on the present investigation, it can be inferred that seasonal changes in HDL level certainly plays a significant role and its availability in any form as food intake can be instrumental in reproductive success of Amur common carp, Cyprinus carpio haematopterus.