Noble,A; Dr.Silas, E G(Cochin University of Science and Technology, February , 1986)
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Abstract:
Mackerel fishery at many places in the country including Cochin
as well as at all—India level, besides its seasonal changes to
have long-term flucations apparently evincing a ten-year cycle.
Published literature on the fishery and biology of mackerel at
many places are available. But attempts on population studies
and assessment of stock are scanty. The researchers attention
at this juncture turned to investigations on population dynamics
of the mackerel .On account of the long-term Fluctuations
in the fishery, it was felt desirable to have data For a
number of years together to facilitate adequate coverage of a
unit of time in the 10-year cycle. Investigations on length weight
relationships for 16 seasons were hence carried out.
This thesis is written eection'by section embodying‘ the
results and_findings of the work carried out under different
subject areas. It contains sections on identity of the species,
information on its spatial and temporal distribution along the
Indian coast, study on length-weight relationships, growth and
age determination, population studies and stock assessment, and
discussions.This dissertation is the outcome of the works of the
candidate on the Indian mackerel. The work, however is based
on exploited resource of the inshore waters. In the course
of this analysis, lacunae existing in the investigations on
the Indian mackerel are therefore identified and presented
For future work