Notes on the phylogeny of the American Penaeus shrimps (Decapoda: Dendrobranchiata: Penaeidae)

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  • von Sternberg Richard
    Center for Intelligent Systems, Department of Systems Science and Industrial Engineering, T. J. Watson School, Binghamton University
  • Motoh Hiroshi
    Kyoto Fisheries Office

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  • アメリカ産クルマエビ属の系統発生に関する一考察
  • Notes on the phylogeny of the American

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Abstract

A cladistic analysis was performed to determine genealogical relationships among subgenera of the shrimp genus Penaeus and for species in the American subgenera Farfantepenaeus and Litopenaeus. Using a combination of genital and somatic characters, Penaeus subgenera were found to exhibit the following pattern of relationships: [Litopenaeus [Fenneropenaeus [Penaeus s.s. [Melicertus - Farfantepenaeus - Marsupenaeus ]]]]. Four genital synapomorphies divide Farfantepenaeus into 2 species groups: a P. (F.) brasiliensis complex consisting of P. (F.) brasiliensis, P. (F.) californiensis, P. (F. ) duorarum, and P. (F.) notialis and a P. (F.) aztecus complex comprised of P. (F.) aztecus, P. (F.) brevirostris, P. (F.) paulensis, and P. (F.) subtHis. Additional characters permitted a phylogenetic hypothesis to be developed for Farfantepenaeus taxa. Fortytwo genital character states revealed the species in the subgenus Litopenaeus to have the following relationships: [P. (L.) vannamei [P. (L.) occidentalis [P. (L.) stylirostris [P. (L.) schmitti - P. (L.) setiferus]]]]. Evolutionary patterns in the genus are discussed.

Journal

  • Crustacean Research

    Crustacean Research 24 (0), 146-156, 1995

    Carcinological Society of Japan

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