NOPR Collection:

Reproductive Behaviour and Spawning in Philyra scabriuscula (fabr.) (Leucosiidae: decapoda)

2016-12-30T11:07:52Z

Title: Reproductive Behaviour and Spawning in Philyra scabriuscula (fabr.) (Leucosiidae: decapoda) Authors: Srikrishnadhas, B.; Ramamoorthi, K. Abstract: A total of 16 spawnings in 182 days has been observed in a single pair of P. scabriuscula kept in the laboratory aquarium. Cannibalistic nature of the female feeding on its own zoeae is probably due to its appetite and lack of food since it feeds voraciously after mating and after spawning. Page(s): 145

Seasonal variation in zooplankton from the coastal waters off saurashtra

2016-12-30T11:05:04Z

Title: Seasonal variation in zooplankton from the coastal waters off saurashtra Authors: Patel, M. I. Abstract: Seasonal variation in hydrography and zooplankton from 3 stations (off Rozi, Port Okha and Dwarka) in the coastal waters off Saurashtra was studied for 2 yr. Primary peaks of Zooplankton were recorded during south-west monsoon (July-October) and secondary peak in north-east monsoon (January) in both the years. Predominant copepods were confined to 8 genera, viz. Paracalanus Boeck, Acrocalanus Giesbrecht, Centropages Herrick, Acartia Dana, Oithona Baird. Oncaea Phillippi, Corycaeus Dana and Eterpina Norman. The major planktonic larvae were of copepoda, mollusca, cirripedia, decapoda and polychaeta. Page(s): 140-144

Early development of Podophthalmus vigil (fabricius) in the laboratory and its fishery off porto novo

2016-12-30T11:02:53Z

Title: Early development of Podophthalmus vigil (fabricius) in the laboratory and its fishery off porto novo Authors: Srinivasagam, S; Natarajan, R. Abstract: After an incubation period of 12-13 days, the berried crab, P. vigil, releases the larvae hatched out mostly in prezoeal and a few in first zoeal stage. Descriptions of early larval stage of P. vigil and the salient features of corresponding stages of some Portunids are given. Contribution of P. vigil to a regular commercial fishery off Porto Novo waters has been stressed. Page(s): 137-140

Biology of the squid Loligo duvauceli d'orbigny obtained in the night catches

2016-12-30T11:00:42Z

Title: Biology of the squid Loligo duvauceli d'orbigny obtained in the night catches Authors: Oommen, Varghese P. Abstract: Food and feeding habit and sex and maturity of the squid L. duvauceli obtained in the trawl nets operated during night were studied. Carnivorous habit and cannibalistic behaviour were observed in this squid. Fishes and crustaceans were found to be its main diet. Occurrence of empty stomachs was less in the squids obtained during night. Page(s): 135-137