Evolution of the Pelvic Fin Ray Musculature of Some Triacanthoid Fishes (Plectognathi)
1970; American Society of Ichthyologists and Herpetologists; Volume: 1970; Issue: 3 Linguagem: Inglês
10.2307/1442272
ISSN1938-5110
Autores Tópico(s)Fish biology, ecology, and behavior
Resumoadductor profundus. Evidence from this musculature suggests that Parahollardia lineata is the most primitive known living plectognath, other members of the Hollardiinae exhibiting a reduction in the number of muscles which progresses from posterior to anterior. This trend differs from that shown by the basal members of the other Recent subfamily of the Triacanthodidae, the Triacanthodinae. In this subfamily, the adductor superior appears to be lost before either of the two adductor profundus muscles. None of the species of Triacanthidae examined possessed muscles to the pelvic fin rays, and on this basis the triacanthids appear to be less generalized than the triacanthodids.
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