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Morphological characteristics of selected body parts of trigger fishes (Tetradontiformes, Balistidae) from India with details on ultrastructural features of body scales

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Relation https://eprints.cmfri.org.in/9509/
 
Title Morphological characteristics of selected body parts of trigger fishes
(Tetradontiformes, Balistidae) from India with details on
ultrastructural features of body scales
 
Creator Sahayak, Satish
Joshi, K K
Sanil, N K
 
Subject Trigger Fishes
Demersal Fishes
 
Description The morphological characters like shape of teeth, nasal apertures, gill rakers and scales of trigger fishes collected from
southern India were studied during the period 2000-2002. Based on the shape of the first and second teeth of the upper and
lower jaw, five types have been identified. The anterior nasal aperture has different shapes, which is species specific but the
posterior aperture is similar in all species. Based on the shape of the anterior nasal aperture, five types have been identified.
The outermost branchial arch possesses gill rakers and based on shape they are divided into five types. Scales on body and
caudal peduncle are diamond shaped, whereas scales on cheek are rhomboid, rectangular, square or triangular occurring in
different combinations. The arrangement of scales on body, abdomen and caudal peduncle were similar in all the species
studied while scales are arranged in three patterns on cheek. Scales on cheek are of seven types based on shape of the scale
and type of protuberances it possessed on the posterior margin. Body scales are of five types and scales on abdomen are of
three types. Transverse section of body scales under the scanning electron microscope (SEM) revealed that the scales consist
of four layers. Studies on the ultrastructure of the anterior margin of the body scales revealed that there are five types; based
on the type of protuberances it possesses and there are of four types of posterior margin.
 
Publisher Central Marine Fisheries Research Institute
 
Date 2013
 
Type Article
PeerReviewed
 
Format application/pdf
 
Language en
 
Identifier https://eprints.cmfri.org.in/9509/1/6_Satish_Sahayak.pdf
Sahayak, Satish and Joshi, K K and Sanil, N K (2013) Morphological characteristics of selected body parts of trigger fishes (Tetradontiformes, Balistidae) from India with details on ultrastructural features of body scales. Indian Journal of Fisheries, 60 (2). pp. 49-57.