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VOL. 10, ISSUE 2 (2025)
Comparative morphometric analysis of two cyprinids with reference to feeding habits
Authors
Manju V Raj, Sherin K, Rani J R, Sherly P S
Abstract
Morphometric analysis helps understanding more
of the fish and the correlation between different features. Though mammals
exhibit morphometric changes as an adaptive strategy against environment
change, and fishes are highly sensitive to these changes. Here the relation between
the brain structure and the feeding habits of two fish species Carassius
auratus and Botia striata of the order Cyprinoformes are studied
from the point of morphology with reference to its feeding habits. Thirty
fishes from each species were studied. In C.auratus, total length, total
weight and brain weight ranged between 4.9 and 10.4, 3g and 18.2 g, 0.00006 and
0.00021 g respectively and in B. striata the values were 3.5 and 7.7, .58g and
7.1 g, 0.00002 and 0.00008 g. In both species total length of the fish against
all measured characters shows a significant (< 0.01) positive linear
correlation. In B. striata all measurements in the brain against brain
length shows high positive correlation and significant values while in C.
auratus, all correlations were significant but length of cerebrum and
length of optic lobe shows slightly less correlation value (0.895, 0.762)
against brain length. The brain morphology and morphometric analysis reveals
that vision and olfaction are highly developed for feeding in surface feeders C.auratus
by the presence of vagal lobe than the bottom feeder B. striata. In B.striata
the absence of vagal lobe and the presence of highly developed facial lobe with
the presence of barbels is an indication of gustation enabled feeding. These
studies reveal more about the feeding habits of these species.
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Pages:1-10
How to cite this article:
Manju V Raj, Sherin K, Rani J R, Sherly P S "Comparative morphometric analysis of two cyprinids with reference to feeding habits". International Journal of Zoology Studies, Vol 10, Issue 2, 2025, Pages 1-10
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