Larval development of the Indo-Pacific perciform fish,Centrogenys vaigiensis (Pisces: Centrogeniidae) |
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Authors: | Jeffrey M Leis Thomas Trnski |
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Institution: | (1) Order of authorship alphabetical Fish Section, Division of Vertebrate Zoology, Australian Museum, 6 College Street, 2000 Sydney, NSW, Australia;(2) Centre for Evolutionary Research, Australian Museum, 6 College Street, 2000 Sydney, NSW, Australia |
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Abstract: | Based on seven larvae from northern Australia, development ofCentrogenys vaigiensis—a species of uncertain phylogenetic affinities—is described for the first time. Identification was established from meristic
and osteological characters. Development is characterized by few morphological specializations and is apparently completed
at a small size (ca 5 mm standard length). Larvae are deep-bodied and compressed, with very limited head spination (small
spines on preopercle, subopercle, opercle and supracleithrum). Fin development takes place at about the time of notochord
flexion, and is complete at about 4.3 mm, with the exception of anal spine three, which does not fully transform from a soft
ray until after settlement. Fin spines are short, smooth and weak. Larvae are apparently limited to near-shore, shallow marine
waters, and based on the size of what are apparently settlement-stage larvae, the pelagic period may be short. |
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Keywords: | Larvae ontogeny development Centrogeniidae Centrogenys vaigiensis |
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