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Ontogenic changes and sexual dimorphism in the head, mouth and teeth of the lesser spotted dogfish
Author(s) -
Ellis J. R.,
Shackley S. E.
Publication year - 1995
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.1095-8649.1995.tb01881.x
Subject(s) - scyliorhinus canicula , sexual dimorphism , biology , ontogeny , sexual difference , anatomy , zoology , head (geology) , fish <actinopterygii> , endocrinology , fishery , psychology , paleontology , psychoanalysis
Male Scyliorhinus canicula possess a longer and narrower mouth than females resulting in pronouced sexual dimorphism with respect to the mouth length/mouth width ratio (0.49 and 0.43, respectively). Significant sexual differences in the girth of the head and pre‐oral, pre‐branchial and head lengths were also recorded. Males were found to have longer teeth than females. Reasons for these differences are discussed.