Tenualosa ilisha (Hamilton) is a valuable migratory fish belonging to the family Clupeidae and it is distributed in a wide area from the Persian Gulf to coasts of Pakistan and China’s southern sea. The aim of the present study was to investigate the changes occurring in innate immunity parameters during upstream migration and comparing them to those during post spawning. Sixty mature female hil...

We studied animal's learning of spatial discrimination in an experimental environment. Turtles, Chinemys reevesii, were employed for the study. We focused on two independent aspects: (1) turtle's success rate in the task, which is the most common criterion to estimate the ability of the animals, and (2) the statistical properties of the time interval of the task, which is independent on the spa...

Present study showed that the over-all sex-ratio deviated in favour of females in Ilisha melastoma. However, the sexratio was approximately 1:1 in certain months while in others it was in favor of females. Similarly the sex-ratio deviated from 1:1 ratio in different size-classes. Minimum size at which the specimens of I. melastoma get matured is 14.9 cm in total length (11.5 cm in SL). Four mat...

The anadromous tropical Hilsa shad formed the largest single-species fishery in Bangladesh, making highest contribution to country’s total fish production (14%) and nearly 83% of global catch 2018. However, increased fishing pressure made vulnerable, hence, information on stock condition its response current degree removal is essential explore future potential for sustainable exploitation. This...