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Marine Biology

, Volume 137, Issue 3, pp 435–446 | Cite as

A new species of Penaeus (Crustacea: Penaeidae) revealed by allozyme and cytochrome oxidase I analyses

  • J. Gusmão
  • C. Lazoski
  • A. M. Solé-Cava

Abstract

 Penaeid shrimps comprise an important portion of the world's industrial fisheries and mariculture. In the Southwest Atlantic, Penaeus (Farfantepenaeus) subtilis, P. (F.) paulensis, P. (F.) brasiliensis and P. (Litopenaeus) schmitti are the most important commercially exploited species. Despite their high commercial value, there is little information available on the different aspects of their biology or genetics and almost no data on stock structure. Also, the taxonomic status of P. subtilis populations in relation to P. paulensis and their geographic ranges have been recently questioned. In this paper we used both nuclear (allozymes) and mitochondrial (cytochrome oxidase subunit 1) data to compare species of south-western Atlantic penaeids and to estimate their phylogenetic relationships. We could readily discriminate among the four main Brazilian penaeid species and detected a fifth, new, species of Penaeus. This new species corresponded to one of the described morphotypes of P. subtilis. Based on these analyses, the geographic ranges of P. subtilis and P. paulensis were clarified. Our data also support the conclusion of Baldwin et al. (1998) that the subgenus Farfantepenaeus is polyphyletic.

Keywords

Phylogenetic Relationship Geographic Range Cytochrome Oxidase Taxonomic Status Oxidase Subunit 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2000

Authors and Affiliations

  • J. Gusmão
    • 1
  • C. Lazoski
    • 1
  • A. M. Solé-Cava
    • 1
  1. 1.Laboratório de Biodiversidade Molecular, Departamento de Genética, Instituto de Biologia, UFRJ, Bloco A, CCS Ilha do Fundão 21941-490, Rio de Janeiro, Brazil Fax: 0055 21 562-6397 e-mail: sole@centroin.com.brBR

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