Comparative allometric growth of the mimetic ephippid reef fishes Chaetodipterus faber and Platax orbicularis

Barros, Breno, Sakai, Yoichi, Pereira, Pedro H.C., Gasset, Eric, Buchet, Vincent, Maamaatuaiahutapu, Moana, Ready, Jonathan S., Oliveira, Yrlan, Giarrizzo, Tommaso, and Vallinoto, Marcelo (2015) Comparative allometric growth of the mimetic ephippid reef fishes Chaetodipterus faber and Platax orbicularis. PLoS ONE, 10 (12). e0143838.

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Mimesis is a relatively widespread phenomenon among reef fish, but the ontogenetic processes relevant for mimetic associations in fish are still poorly understood. In the present study, the allometric growth of two allopatric leaf-mimetic species of ephippid fishes, Chaetodipterus faber from the Atlantic and Platax orbicularis from the Indo-Pacific, was analyzed using ten morphological variables. The development of fins was considered owing to the importance of these structures for mimetic behaviors during early life stages. Despite the anatomical and behavioral similarities in both juvenile and adult stages, C. faber and P. orbicularis showed distinct patterns of growth. The overall shape of C. faber transforms from a rounded-shape in mimetic juveniles to a lengthened profile in adults, while in P. orbicularis, juveniles present an oblong profile including dorsal and anal fins, with relative fin size diminishing while the overall profile grows rounder in adults. Although the two species are closely-related, the present results suggest that growth patterns in C. faber and P. orbicularis are different, and are probably independent events in ephippids that have resulted from similar selective processes.

Item ID: 44353
Item Type: Article (Research - C1)
ISSN: 1932-6203
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© 2015 Barros et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Funders: Japanese Ministry of Education, Culture, Sports, Science and Technology, Brazilian Federal Agency for Support and Evaluation of Graduate Education (CAPES), Brazilian National Council for Scientific and Technological Development (CNPq)
Projects and Grants: CAPES #6718-10-8, CNPq # 456780/2012
Date Deposited: 17 Jun 2016 00:30
FoR Codes: 06 BIOLOGICAL SCIENCES > 0603 Evolutionary Biology > 060303 Biological Adaptation @ 50%
06 BIOLOGICAL SCIENCES > 0602 Ecology > 060205 Marine and Estuarine Ecology (incl Marine Ichthyology) @ 50%
SEO Codes: 96 ENVIRONMENT > 9608 Flora, Fauna and Biodiversity > 960808 Marine Flora, Fauna and Biodiversity @ 50%
97 EXPANDING KNOWLEDGE > 970106 Expanding Knowledge in the Biological Sciences @ 50%
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