SOME OBSERVATIONS ON THE SIZE DISTRIBUTION AND THE OCCURRENCE OF GROWTH RINGS IN THE SCALES OF THREE SPECIES OF CYNOGLOSSUS AT CALICUT


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Authors

  • G Seshappa Central Marine Fisheries Research Institute.

Abstract

Observations have been made on the length-frequency trends in three of
the less common species of Cynoglossus at Calicut during the years 1969-73, these
species being C. bilineatus (Lacepede). C. puncticeps (Richardson) and C. lida
(Bleeker). As these species occur only as occasional specimens in the fish catches,
large samples were not available for studying the month-to-month variation patterns
in the size distribution, and so the annual totals are considered here, and these
give some idea of the sizelimits and the prevailing sizes during the different years.
204 individuals of C. bilineatus were measured during the psriod (5-5.9 to BBSS.
9 cm); of C. puncticeps, 316 specimens were measured (5-5.9 to 20-20.9 cm
groups); and of C. lida, 138 individuals were measured (14-14.9 cm to 21-21.9 cm).
In all the three species, the scales revealed growth rings comparable to those
described in the case of the Malabar sole, C. macrostomus (Norman); the trend of
occurrence of these growth rings in the three species is described and discussed.

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Author Biography

  • G Seshappa, Central Marine Fisheries Research Institute.
    Central Marine Fisheries Research Institute.

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Issue

Vol. 25 No. 1 & 2 (1978)

Section

Articles

License

The copyright of the articles published in Indian Journal of Fisheries vests with the Indian Council of Agricultural Research, who has the right to enter into any agreement with any organization in India or abroad engaged in reprography, photocopying, storage and dissemination of information contained in these journals. The Council has no objection in using the material, provided the information is being utilized for academic purpose but not for commercial use. Due credit line should be given to the ICAR where information will be utilized.

How to Cite

Seshappa, G. (2011). SOME OBSERVATIONS ON THE SIZE DISTRIBUTION AND THE OCCURRENCE OF GROWTH RINGS IN THE SCALES OF THREE SPECIES OF CYNOGLOSSUS AT CALICUT. Indian Journal of Fisheries, 25(1 & 2), 188-196. https://epubs.icar.org.in/index.php/IJF/article/view/12096