Abstract
Spawning periodicity of the green mussel, P. viridis (Linn. 1758), from the Moheshkhali channel of the Bay of Bengal, Bangldesh was determined by ‘larval abundance’ method for a period of one year from November 1990 and October 1991. Higher larval abundance of P. viridis was recorded during pre-monsoon (January to April) and post-monsoon (September to December) months. Two significant peaks in spawning were recorded- the major peak in September (post-monsoon period) and a minor peak in April (pre-monsoon season). The abundance of the green mussel larvae was found to be correlated with high abundance of other mollusc larvae. However, a water temperature, salinity and the abundance of zooplankton showed negative correlation with the abundance of P. viridis larvae.
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