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The calanoid copepod family Pontellidae from the Indian Ocean

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Relation http://eprints.cmfri.org.in/1578/
 
Title The calanoid copepod family Pontellidae from the Indian Ocean
 
Creator Silas, E G
Pillai, P P
 
Subject Copepods
 
Description The problems of immediate concern regarding the fishery of Indian oil-sardine, Sardinella longiceps, areas follows: Researches should be keyed up on three main lines,
namely, behaviour studies through analysis of the distribution patterns of the fish in relation to the environment, population studies to know the homogeneity of the exploited population as well as its strength and parameters and spawning studies for detection,
delimitation and evaluation of the spawning areas. Development should include redeployment of eff'ort beyond the present fishing zone, introduction of purse seining
on a large scale and the socio-economic problems of the fishing community.
The fluctuations so characteristic of the oil-sardine catches are most probably because of oscillations in the annual recruitment of the juvenile broods which, in turn, appear to be linked up with variations in the intensity of the south-west monsoon. A weak or erratic monsoon is suspected to bring about conditions which are not conducive to successful reproduction and survival of the young fish. A hypothesis is proposed that while a certain minimum amount of rainfall during the spawning period appears a necessary condition, it certainly is not the only responsible factor for production of a good year class.
A symposium on both the oil-sardine and the Indian mackerel is suggested to inincrease the effectiveness of future attempts of more penetrative studies, since many of the
problems are common for both the fisheries which constitute the 'dual-species neritic pelagic fisheries system' of south-west coast of India.
 
Publisher MBAI
 
Date 1973
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/1578/1/Silas_771-858.pdf
Silas, E G and Pillai, P P (1973) The calanoid copepod family Pontellidae from the Indian Ocean. Journal of the Marine Biological Association of India, 15 (2). pp. 771-858.