An evaluation of a double-tailed deformity in a coral-reef surgeonfish Acanthurus nigrofuscus (Acanthuridae) using micro-computed tomography

Goatley, C.H.R., Wroe, S., Tebbett, S.B., and Bellwood, D.R. (2018) An evaluation of a double-tailed deformity in a coral-reef surgeonfish Acanthurus nigrofuscus (Acanthuridae) using micro-computed tomography. Journal of Fish Biology, 92 (5). pp. 1645-1650.

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Abstract

X-ray micro-computed tomography scans were used to examine the caudal-fin structure of an unusual double-tailed deformity in an adult brown surgeonfish Acanthurus nigrofuscus from the Great Barrier Reef. In both this case and in a similar double-tailed deformity in a juvenile Tomini surgeonfish Ctenochaetus tominiensis from the Philippines, the caudal fin was duplicated along the dorsoventral axis. Detailed examination of the A. nigrofuscus specimen revealed that the deformity was associated with duplication and reflection of the hypural plates and the posterior vertebrae, yet the fish survived to adulthood, indicating that the effects of duplication on survival may be limited.

Item ID: 54443
Item Type: Article (Research - C1)
ISSN: 1095-8649
Keywords: caudal fin, hypural, Indo-Pacific, morphology, reef fish
Copyright Information: © 2018 The Fisheries Society of the British Isles.
Funders: Australian Research Council (ARC), University of New England (UNE)
Date Deposited: 04 Jul 2018 07:59
FoR Codes: 06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 100%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 100%
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