553 research outputs found
The windowpane oyster resources of Kakinada Bay
Among the commercially exploited bivalve mollmcs in India
the windowpane oyster Placenta placenta (Uniiaeus) (Talapu gulla
in Telugu) is next in importance to the clams in quantitative abundance.
A major fishery for this species exists in the Kakinada Bay
where the annual production is about 50001. Production is about
1500 t/year of empty shells in the Kndhara Bay in the Gulf of Kutch
and about 350 t/year in Naukim Bay at Goa. In the fishery at
Kakinada Bay about 300 plank-built boats are deployed. This
species occurs in stray numbers at several other centres along the
Indian Coast. Considerable quantities of the shell are also
collected from the subsoil deposits, particularly from the Vembanad
Lake in Kerala State
Technology of mollusc culture
THE molluscs are an important group of
shellfish and are exploited along the Indian
coasts. Their meat is used as food; the shell
is an important raw material in lime based
industries and also in making curios. In
temperature countries culture of molluscs such
as oystelS, clams, mussels scallops and abalones
is widely practised to augment production. In
India, technologies for fanning several species
of molluscs have been developed during the
past two decades, mainly due to the efforts at
the Central Marine Fisheries Research Institute
(CMFRl)
Technology of cephalopod scallops and abalone culture
Our- present knowledge on cephalopod culture is limited to rearing of t he squid/cuttlefish from egg to maturity in tanks or ponds and commercial culture is not practised anywher
Fishery and biology of clam and cockles
The most productive areas are the Kalbadevi estuary and
Bhatia creek in Ratnagiri District. Torkarli creek south of Malwan is also important. Clams are collected by men, women and children at low ntide by hand picking . Canoes and rake nets are also use
Kakinada Bay fisheries - Nostalgic memories
In 1978 work was initiated to culture
the -blood clam Anadara granosa in the
Bay. A 100 m2 area was selected, an
elderly clam fisherman from the village
was entrusted with the watch and ward.
Wide publicity was given in the village to
create awareness. In the evening, the site
was fenced with dry palmyra leaves (to
serve as pen enclosure). Nylon netting
was not preferred due to possible poachin
Studies on some aspects of biology and fishery of the cockle, Anadara granosa (Linnaeus), from Kakinada bay
Age and growth of A,granosa has been studied by an examination of the size-frequencies of random
samples for the period from April 1965 to September 1966. The cockles measure 31 -5 mm. in length at the
end of the first year and 49.3 mm. at the end of the second year of life. No growth rings were noticed to be
of use in age determination. The commercial catches chiefly consisted of '0' and 1 + age groups in the year
April 1965 to March 1966. The cockles reach sexual maturity when they measure 21 mm. and about 7 months old. They appear to breed throughout the year. There is a peak spawning activity in January- April period. The length-weight relationship has been studied
Technology of clams and cockles culture
Good numbers of clams are at present cultivated in a number of countries. It my be seen that clam/cockle culture is extensively practised in Japan, Korea, Taiwan, Malaysia and Thailand
Fishery and biology of cephalopods
They are purely marine in habitat .Among the cephalepods several species of squids, cuttlefishes, optopus are commercially important
Clam culture
The hatchery technology for the large scale production of the seed of A.granosa, P.malabarica, M.meretrix and M.casta has been developed by the CMFRI
The blood clam culture
The Blood clam Anadara granosa (Linnaeus) is widely distributed
in the Indo-Pacific. Besides being an important resource
for the capture fishery in several countries, it is extensively cultivated
in Japan, Malaysia, Republic of China, Thailand and Taiwan.
This species occurs in stray niunbers along the Indian Coast and
is unique in that it forms a fishery of some magnitude (2000 t/year)
only in the Kakinada Bay. Based on the experiments conducted
in 4 seasons during 1979 - 82, simple techniques for augmenting
the production of A. granosa by transplantation, were developed by
the Central Marine Fisheries Research Institute at Kakinada
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