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Jellyfishes-Diversity, Biology-Importance in Conservation In: ICAR Sponsored Winter School on Recent Advances in Fishery Biology Techniques for Biodiversity Evaluation and Conservation, 1-21 December 2018, Kochi.

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Title Jellyfishes-Diversity, Biology-Importance in
Conservation In: ICAR Sponsored Winter School on Recent Advances in Fishery Biology Techniques for Biodiversity Evaluation and Conservation, 1-21 December 2018, Kochi.
 
Creator Saravanan, Raju
 
Subject Jellyfish
Marine Biology
Invertebrates
 
Description Jellyfish is a common word used for any gelatinous animal in marine waters. These include a wide
variety of stinging and non-stinging jellyfishes. Jellyfishes are the oldest animal on planet earth
from Pre-Cambrian period, and passed through 500 million years of natural selection. The term
jellyfish generally refers to gelatinous zooplankton including medusae of the phylum
Cnidaria(scyophomedusae, hydromedusae, cubomedusae and siphonohores) and planktonic
members of the phylum Ctenophora, Salps and Pyrosomes etc. The true jelly fish are coming under
the three Cinidarian classes viz., Hydrozoa, Scyphozoa and Cubozoa and seasonally swarm in the
coastal waters. Among the three classes; representatives of Scyphozoan and Cubozoan are ranging
in size from 2mm to 2 m bell diameter, however most of the hydrozoan jellyfishes are smaller than
2mm in bell diameter and belong to the mesoplankton. The biodiversity of the pelagic scyphozoan
jellyfishes and Cubozoan jellyfishes is largely ignored in India other than a few works in this line.
The first work on scyphozoan medusae was published way back in 1930, in which the scyphomedusae
of Madras has been described with illustrations (Menon, 1930). Subsequent to this publication the
above author has brought out scyphomedusae of Kurusadai Island (Menon, 1936). These are the
two classic works which describe about the taxonomic features and distribution of scyphomedusae
along the south east coast of India. Since then there is a long gap in the study of scyphomedusae in
India. The scyphomedusae available in India was listed as 34 by Chakrapany (1984). The Medusae
of the Travancore waters was studied by Nair (1951) and assessed the impact on fisheries.
 
Date 2018
 
Type Teaching Resource
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/13329/1/27-Winter%20School%20on%20Recent%20Advances%20in%20Fishery%20Biology%20Techniques%20for%20Biodiversity%20Evaluation%20and%20Conservation_2018_Saravanan%20R.pdf
Saravanan, Raju (2018) Jellyfishes-Diversity, Biology-Importance in Conservation In: ICAR Sponsored Winter School on Recent Advances in Fishery Biology Techniques for Biodiversity Evaluation and Conservation, 1-21 December 2018, Kochi. [Teaching Resource]