Morphology of Buccopharyngeal Cavity of Two Species of Genus Hypophthalmicthys.
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Date
2014-04
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Abstract
Morphological and morphometric data of the buccal cavity, pharyngeal bone and dentition of two
species of Hypophthalmicthys (i.e. H. molitrix and H. nobilis) were collected. The structure of the
bucccopharyngeal cavity (BC) of Hypophthalmicthys spp. follows a typical pattern of teleost fish. BC in bighead
carp is comparatively bigger than that of silver carp measuring 29.01% and 28.12% of standard body length. Mouth
gape measures 21.7% of head length in bighead carp and 31.06% of head length in silver carp. In both the species
ventral surface of the lateral projection of pharyngeal bone bears pits and openings however, their position differs.
This can be a high weight taxonomic character for the identification of the two species. Both species exhibit small
teeth bearing area with Dl/Pl ratio <0.5. Pharyngeal bone bears a single row of teeth (0,4-4,0) with their masticating
surface steeply inclined towards dorso-mesially.
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Keywords
Morphology, Buccopharyngeal cavity, Hypophthalmicthys sp
Citation
Tyor Anil K, Chawla Deepti. Morphology of Buccopharyngeal Cavity of Two Species of Genus Hypophthalmicthys. International Journal of Applied Biology and Pharmaceutical Technology. 2014 Apr-June; 5(2): 46-51.