Comparative morphology and systematics of the cookiecutter sharks, genus Isistius Gill (1864) (Chondrichthyes: Squaliformes: Dalatiidae)

Autor(es)

Petean, Flavia de Figueiredo ^{[1, 2]} ; de Carvalho, Marcelo R. ^[3]

Afiliação do(s) autor(es)

^[1] Univ Sao Paulo, Inst Biociencias, Dept Zool, Sao Paulo, SP - Brazil

^[2] Univ Fed Rio Grande do Norte, Ctr Biociencias, Dept Bot & Zool, Natal, RN - Brazil

^[3] Amer Museum Nat Hist, New York, NY 10024 - USA

• Tipo de documento: Artigo Científico
• Fonte: PLoS One; v. 13, n. 8 AUG 20 2018.
• Citações Web of Science: 0

Resumo

The dalatiid genus Isistius Gill (1864) has three valid species currently recognized in the literature: Isistius brasiliensis Quoy \& Gaimard (1824), I. plutodus Garrick \& Springer (1964), and I. labialis Meng, Zhu \& Li (1985). The most common species, I. brasiliensis, has a wide geographic distribution and is found in subtemperate and tropical seas circumglobally. A comparative analysis of specimens from different localities throughout its range, however, had never been undertaken. In the present paper, the morphological variation of this species along its entire distribution has been thoroughly analyzed, corroborating that it represents a single widespread species and that I. labialis is its junior synonym. The other congeneric species, I. plutodus, is known from only a few specimens and is also distributed worldwide. A detailed comparative analysis of available material of I. plutodus was conducted verifying its validity as a single widespread species. The present study analyzed in detail the external morphology (coloration, dentition, dermal denticles), internal morphology (skeleton, musculature), lateral- line canals, and morphometric and meristic characters of species of Isistius in order to better define the genus and its included valid species. (AU)

• Processo FAPESP: 12/09877-0 - Estudo comparativo da morfologia do aparelho alimentar em raias da ordem Myliobatiformes (Chondrichthyes: Batoidea)
• Beneficiário: Marcelo Rodrigues de Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 13/09270-0 - Revisão taxonômica e morfologia comparada das espécies do gênero Isistius gill, 1865 (Squaliformes: Dalatiidae)
• Beneficiário: Flávia de Figueiredo Petean
• Modalidade de apoio: Bolsas no Exterior - Estágio de Pesquisa - Mestrado
• Processo FAPESP: 12/07668-4 - Revisão taxonômica e morfologia comparada das espécies do gênero de Isistius gill, 1865 (Chondrychthyes: Squaliformes: Dalatiidae)
• Beneficiário: Flávia de Figueiredo Petean
• Modalidade de apoio: Bolsas no Brasil - Mestrado
• Processo FAPESP: 12/05391-5 - Evolução molecular de regiões regulatórias de genes HOX associados com a morfologia da nadadeira de peixes, com especial ênfase em Chondrichthyes
• Beneficiário: Marcelo Rodrigues de Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Regular
• Processo FAPESP: 12/02349-8 - Revisão taxonômica da família Gymnuridae (Chondrichthyes: Myliobatoidei)
• Beneficiário: Marcelo Rodrigues de Carvalho
• Modalidade de apoio: Auxílio à Pesquisa - Regular