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Growth pattern among the post-naupliar stages of three species of Euphausiacea (Crustacea)

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Relation http://eprints.cmfri.org.in/1381/
 
Title Growth pattern among the post-naupliar stages of three species of Euphausiacea (Crustacea)
 
Creator Mathew, K J
 
Subject Crustacean Fisheries
 
Description Experimental data regarding the larval development in Euphamiacea are very much limited and hence
the pattern of larval development and the growth rate are estimated by making use of the material obtained
from the open sea. Several methods of estimating the growth have been in use. The author attempts
here to demonstrate the growth pattern among the post-naupliar developmental stages of three species
namely Euphausia diomedeae Ortmann, E. sibogae Hansen and Stylocheiron armatum Colosi, based on
material obtained from the southeastern Arabian Sea. A comparative study has also been made of the
pattern of growth among these species.
The percentage of increase in body length in the three species mentioned above generally showed considerable
decrease as development progressed from first calyptopis onwards. However, considerable variation
was observed in the rate of increment in length in between species. It was also found that the larval
length and the length in adults are not proportional in the three species. The accuracy of the identity of
larval stages and of the larval sequence were verified using the ' Brooks Law' of larval growth. Attention
is also drawn to the modern technique of calculating growth rates by the application of log/linear regression
equations relating the duration of the intercraoult period to successive moult numbers or body lengths.
 
Publisher MBAI
 
Date 1980
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier http://eprints.cmfri.org.in/1381/1/Math_63-69.pdf
Mathew, K J (1980) Growth pattern among the post-naupliar stages of three species of Euphausiacea (Crustacea). Journal of the Marine Biological Association of India, 22 (1&2). pp. 63-69.