Ajitha Kumar, B S; Dr.Alagarswami, K(Cochin University of Science And Technology, March , 1984)
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Abstract:
This thesis deals with the reproductive physiology of the two species of Indian sea mussels, namely the brown mussel perna indica and the green mussel p viridis .The major aspects of the study include ecophysiology of reproduction linking up the animal reproductive cycle of the animals with the ecological conditions of the natural mussel beds, biochemical and histochemical changes associated with reproduction and neurosecretory cycle in synchrony with the reproductive cycle. Some basic studies on gamete morphology and certain aspects of gamete physiology have been taken up. The experimental work deals with the influence of different feeding levels on gamatogenesis and maturation and the effect of ganglia ablation on spawning. The material for the investigation on perna indica were collected from the natural mussel beds at Vizhinjam near Trivandrum and on p.viridic from Elathur, near Calicut. The period of observation extended from October 1981 to December 1982.
Description:
Central marine fisheries research institute, Cochin University of Science And Technology
Nasser, A K V; Dr.James, P S B R(Cochin University Of Science And Technology, July , 1993)
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Abstract:
Extensive investigations on the distribution and
biology of skipjack tuna are available but less is known of the
bait fishes on which this fishery depends and what is known is
inadequate, fragmentary and of cursory nature. The information
available on tuna livebait fishes of Lakshadweep are mainly
cofined to short term surverys aimed at estimating theiravailability and abundance. Reports on the biology of a few
species from Minicoy are also present in the literature. This
study was, therefore, prompted by a paucity of information on
1) the livebits of Minicoy, 2) livebait fishery of the northern
islands and 3) knowledge of livebait ecology
Description:
School Of Marine Sciences
Cochin University Of Science And Technology