Estimated resources of demersal fisheries off North Tamil Nadu- South Andhra Coasts Based on exploratory surveys

The results of analyses of exploratory trawling survey data for areas north of latitude zone 1O' 4O'N (off Velanganni) up to '15' 40' (off Nizampatnam) for a nine year period from 1973 to 1981 are presented. In the entire region explored, a potential yield of 1.09 t km could be expected. Barring the latitude zone 10' 40', the lowest yield (0.7 t km-') was observed off Madras/Ennore zone (13°10'). With this zone as a reference point, the following conclusions could be drawn: a) increasing trends in both southern and northern zones and b) the northern zones were comparatively richer in yields