Early development of Thyrsitops lepidopoides (Pisces: Gempylidae)

ARTIGOS

Early development of Thyrsitops lepidopoides (Pisces: Gempylidae)

Gosuke Sato^I; Yasunobu Matsuura^II

^IEmpresa Catarinense de Pesquisa Agropecuária S.A. (EMPASC), Estação Experimental de Itajaí, (Caixa Postal 277, 88300 Itajaí, SC)

^IIInstituto Oceanográfico da Universidade de São Paulo, (Caixa Postal 9075, 01051 Sao Paulo, SP)

SYNOPSIS

Thyrsitops lepidopoides larvae were caught with Bongo nets in the upper 200 m of the ocean from the coast of southern Brazil during 1975-1978. Based on a serie of 271 specimens ranging from 2.5 to 24.0 mm body lenght, morphological and osteological development of the larvae and juveniles is described. Small larvae (2.5-12.0 mm NL) can be distinguished from all known gempylid larvae by the presence of a distinct melanophore at the base of the dorsal and anal fins. The larvae have well developed dorsal and ventral spines. It is the only gempylid with six preopercular spines and non-serrated dorsal and ventral spines during the larval stage.

Descriptors: Fish larvae, Larval development, Animal morphology, Osteology, Morphogenesis, Thyrsitops lepidopoides, Gempylidae, Southern Brazilian coast.

Descritores: Larvas de peixes, Desenvolvimento larval, Morfologia animal, Osteologia, Morfogenia, Costa sul: Brazil.

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Acknowledgements

The authors wish to thank Dr. William J. Richards and Dr. Thomas Potthoff of the National Marine Fisheries Service, for revisions and critical reading of the manuscript. The financial support of this work came from the Financiadora de Estudos e Projetos (FINEP). The junior author received the research fellow ship of the Conselho Nacional de Desenvolvimento Cientifico e Tecnológico (CNPq). This is a contribution nº 617 of the Instituto Oceanográfico da Universidade de São Paulo.

(Received 28-Sept-1986; accepted 18-Dec-1986)

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Publication Dates

• Publication in this collection
  01 June 2012
• Date of issue
  1986

History

• Accepted
  18 Dec 1986
• Received
  28 Sept 1986