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Seasonal availability and population structure of Eurobowmaniella simulans W. Tattersall, 1915 (Crustacea: Mysida) along Vizhinjam coast, Kerala, India

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Relation http://eprints.cmfri.org.in/11162/
http://mbai.org.in/php/journaldload.php?id=2384&bkid=115
 
Title Seasonal availability and population
structure of Eurobowmaniella
simulans W. Tattersall, 1915
(Crustacea: Mysida) along Vizhinjam
coast, Kerala, India
 
Creator Neethu Raj, P
Anil, M K
Rohini Krishna, M V
 
Subject Crustacean Fisheries
 
Description Eurobowmaniella simulans is the commonly available species of mysid
along the Vizhinjam coast of Kerala. Sampling of mysids has been
carried out over a period of one year from March 2014 to February
2015 to study the seasonal availability and population structure.
Monthly samples of mysids consisted of individuals in various
developmental stages, from juveniles to mature mysids around the
year, but their percentage availability varied. The peak availability of
mysids was recorded during September (2014) (avg. 48,731 numbers
per haul) and their availability was lowest in July (2014) with an
average of 2 individuals per haul. The availability of brooding or
ovigerous females were observed throughout the year and highest and
lowest percentage availability was during November (2014) and April
(2014) respectively. Morphometric measurements of E. simulans
revealed that their average size (TL) ranged from 2.35±0.52 mm-
(juvenile) to 7.47±1.75 mm (adult). Sex could be first distinguished
externally when mysid attains the total length between 4.1 mm and 5
mm. Analysis of variance of different water quality parameters and
mysid density comparing seasons revealed that there was significant
variation of mysid availability between seasons (P < 0.05). Multivariate
Pearson’s correlation analysis of water quality parameters and mysid
density showed that there was a significant relation with chlorophyll a
content (P < 0.001) of seawater. The present study also revealed that
mysids are available in harvestable quantities for aquaculture purposes
from August to November.
 
Publisher Marine Biological Association of India
 
Date 2016
 
Type Article
PeerReviewed
 
Format text
 
Language en
 
Identifier http://eprints.cmfri.org.in/11162/1/JMBAI%2058-1-2.pdf
Neethu Raj, P and Anil, M K and Rohini Krishna, M V (2016) Seasonal availability and population structure of Eurobowmaniella simulans W. Tattersall, 1915 (Crustacea: Mysida) along Vizhinjam coast, Kerala, India. Journal of the Marine Biological Association of India, 58 (1). pp. 13-20. ISSN 2321-7898