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Systematics, zoogeography and affinity of boring sponges infesting the brown mussel, Perna indica Kuriakose and Nair from the southwest coast of India

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Title Systematics, zoogeography and affinity
of boring sponges infesting the brown
mussel, Perna indica Kuriakose and Nair
from the southwest coast of India
Not Available
 
Creator Thomas,P A
Sunil Kumar,P
 
Subject Brown mussel, dreadful sponge pests, southwest
coast, India
 
Description Not Available
A study on the boring sponges infesting the brown mussel
population of the southwest coast of India was initiated in
1998, and bored shells collected from five major mussel
fishing centres along the coast were analysed on a regular
basis. It could be seen that out of 5,600 shells examined
during 1998-2000 period, 997 shells were found
infested with boring sponges registering an overall
incidence of 17.8%, and this, when compared with 3-8 %
noticed in natural molluscan beds was too high. The total
number of boring sponge species recorded from mussel is
nine, and these fall under two families and four genera,
the most speciose genus being Cliona with five species.
The Enayam centre accounted for all the nine species, and
the two new infiltrants, Pione margaritifera and C. lobata
formed a common factor with high specific incidence (%)
in all the centres surveyed. Out of three conventional
species, only two viz. Cliona celata and Pione vasitifca
were present in all the centres surveyed with subdued
activity and lower incidence %. Pione carpenteri, the third
conventional species, could be collected only from Enayam
and Kadiyapatnam. Cliothosa hancocki, Thoosa armata
and Siphonodictyon minutum were present only at Enayam
and were new records to brown mussel. Another species,
Alectona wallichii, is also recorded from Enayam. During
the present study it could be ascertained that P. vastifica,
a conventional boring species of molluscs, has succeeded
in colonizing the estuarine realms of Ashtamudi Lake,
Kollam due to its euryhaline nature, and hence form a
major threat to any molluscan culture farm along this
estuary in future. Systematics, description, distribution of
all the nine species along with illustrations are given in this
paper.
Not Available
 
Date 2021-09-16T15:31:43Z
2021-09-16T15:31:43Z
2015
 
Type Article
 
Identifier Not Available
2321-7898
http://krishi.icar.gov.in/jspui/handle/123456789/63454
 
Language English
 
Relation Not Available
 
Publisher MBAI, Cochin-14