Spat settlement of brown mussel Perna indica Kuriakose and Nair in the southwest coast of India

Abstract

Brown mussel Perna indica contribute 15% of the total mussel production in India. This species
\nspawns from June to August from Quilon to Cape Comorin. The spat settlement in the natural bed
\nwas observed from July to September and the peak mode of spat size in the natural bed and the growth
\nrate were estimated. Regular sampling from natural bed was done to observe the density and changes
\nin the spat settlement pattern. The byssogenesis of spat ranging from 5-35 mm were studied in the
\nlaboratory condition. The effect of temperature, salinity and dissolved oxygen on spawning and
\nsettlement are also presented in this paper.