Experimental studies on Macro fouling communities on net panels at marine cage farm of Karwar, India

Sonali Mhaddolkar, Jayasree Loka, Sonali Mhaddolkar, Jayasree Loka, K Philipose, A Dineshbabu
2017 184 International Journal of Fisheries and Aquatic Studies   unpublished
A study was undertaken on the fouling pattern, monthly settlement and species dominance at marine cage culture during the year 2014-2015. The net panels deployed at three different depths during December 2014 and the study was carried out for seven months. The study revealed wide variations in colonization of the bio-foulers, the density varied between 2-260/cm 2. The overall density was found to be more in bottom panels (6mt) compared to the top (1mt) and middle panels (3mt). The overall
more » ... nt species were hydroids and barnacles throughout the culture period. In the top panels, hydroids were dominant (91.67%) during December, followed by barnacles and amphipods. Additionally, complete dominance of barnacles was observed in the middle panel during May. Barnacles were found dominant (93.75%) on the bottom panels during March, followed by hydroids and crabs. The study underscored that barnacles formed a major contribution of the fouling organisms throughout the culture period. Significant variation in the occurrence and abundance of fouling organisms was observed, between the depths at cage site.