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Species composition, abundance and distribution of hydromedusae from Dharamtar estuarine system, adjoining Bombay harbour

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Title Species composition, abundance and distribution of hydromedusae from Dharamtar estuarine system, adjoining Bombay harbour
 
Creator Santhakumari, V
Tiwari, L R
Nair, Vijayalakshmi R
 
Description 158-162
Species
composition, abundance and distribution of hydromedusae from Dharamtar
estuarine system, adjoining Bombay
harbour were investigated during 1984 -1985. Twenty six species belonging to 19
genera were obtained from this area. Maximum species diversity was observed at
st. 1 (coastal zone). A downward trend in species diversity was discernible
towards the upper reaches of the estuary. Highest population density of
hydromedusae was observed at st. 4 (inner zone) and it was due to the swarm of Ostroumovia
inkermanica, 6450/100m3 during September. The swarms were
composed of

chiefly juveniles. The more
number of species of the outer zone was due to the occurrence of holoplanktonic
species. Ostroumovia inkermanica, Phialidium brunescens, Euphysora bigelowi and
Blackfordia virginica were recorded from all stations at least in a few
months of the year. A marked species succession was discernible at some
stations while species coexistence also was observed at other stations.
Postmonsoon season (October-January) and late monsoon season (September) were
found to be favourable for the growth and activity of hydro medusae in this
estuary.
 
Date 2014-01-15T08:50:00Z
2014-01-15T08:50:00Z
1999-06
 
Type Article
 
Identifier 0975-1033 (Online); 0379-5136 (Print)
http://hdl.handle.net/123456789/25686
 
Language en_US
 
Rights CC Attribution-Noncommercial-No Derivative Works 2.5 India
 
Publisher NISCAIR-CSIR, India
 
Source IJMS Vol.28(2) [June 1999]