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Annual reproductive cycle of the wedge clam, Donax cuneatus Linnaeus

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Title Annual reproductive cycle of the wedge clam,
Donax cuneatus Linnaeus
Not Available
 
Creator Rao,K Satyanarayana
 
Subject Venus mercenaria
gametogenesis
 
Description Not Available
The venerid clam Venus mercenaria of the temperate waters is known to have
a distinct annual reproductive cycle, gametogenesis taking place during the autumn
and winter and spawning between July and September (Loosanoff, 1937). Studies
on the reproductive activity of the economically important clams of the family
veneridae of the Indian coasts have received some attention. Hornell (1922) has
observed that in Meretrix casta spawning takes place twice a year, during April-
May and September on the east coast. Abraham (1953) and Durve (1964) have
found that M. casta in the Adyar estuary and Mandapam fish farms spawn several
times a year. In the estuarine clam, Katelsia opima, Rao (1951) has observed that
gametogenesis takes place between April and August and' that spawning which
commences in December is completed in January. The reproductive periodicity
of the clams of the family Donacidae which occur in fair abundance along the Indian
coasts has not been studied in detail except for the observations of Nayar (1955)
who has stated that Donax cuneatus of the Palk Bay spawns between January and
April and of Alagarswamy (1967) who very recently reported prolonged spawning
from November to June in D. faba from Mandapam coast. The annual reproductive
cycle of D. cuneatus of the Madras coast has been studied in the present work
based on the seasonal gonadal changes of the adult clams.
Not Available
 
Date 2021-08-09T09:52:08Z
2021-08-09T09:52:08Z
1967
 
Type Article
 
Identifier Not Available
http://krishi.icar.gov.in/jspui/handle/123456789/54105
 
Language English
 
Relation Not Available
 
Publisher MBAI