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Alteraçoes morfológicas dos estádios de crescimento de Amphilocus neapolitanus Della Valle (Gammaridea, Amphilochidae) e Ampithoe ramondi Audouin (Gammaridea, Ampithoidae), anfípodes associados à alga Sargassum cymosum

Morphological variations of the stage growth of the amphipods Amphilocus neapolitanus Della Valle (Gammaridea, Amphilochidae) and Ampithoe ramondi Audouin (Gammaridea, Amphithoidae) from the algae Sargassum cymosum

Resumo

A descriptive account is given of the post-embrionic development of Amphilochus neapolitanus Della Valle, 1893 and Ampilhoe ramondi Audouin, 1826 living on Sargassum cymosum C. Agardh, 1820 of Ubatuba, Brazil (23º30'S-45º06'W) through the growth stage based on the morphological changes at each moult. The growth stages are described on the increase of antennal and pleopodal articles number and morphological alterations of gnathopods. The number of stages was found to be different for males and females and the maturity occurs after 6 and 5 post marsupial stages for A. neapolitanus and A. ramondi respectively.

Amphipods gammarids; growth stages; morphological variations


Amphipods gammarids; growth stages; morphological variations

Alteraçoes morfológicas dos estádios de crescimento de Amphilocus neapolitanus Della Valle (Gammaridea, Amphilochidae) e Ampithoe ramondi Audouin (Gammaridea, Ampithoidae), anfípodes associados à alga Sargassum cymosum

Morphological variations of the stage growth of the amphipods Amphilocus neapolitanus Della Valle (Gammaridea, Amphilochidae) and Ampithoe ramondi Audouin (Gammaridea, Amphithoidae) from the algae Sargassum cymosum

Fosca P.P. Leite

Departamento de Zoologia, Instituto de Biologia, Universidade Estadual de Campinas. Caixa Postal 6109, 13083-970 Campinas, São Paulo, Brasil

ABSTRACT

A descriptive account is given of the post-embrionic development of Amphilochus neapolitanus Della Valle, 1893 and Ampilhoe ramondi Audouin, 1826 living on Sargassum cymosum C. Agardh, 1820 of Ubatuba, Brazil (23º30'S-45º06'W) through the growth stage based on the morphological changes at each moult. The growth stages are described on the increase of antennal and pleopodal articles number and morphological alterations of gnathopods. The number of stages was found to be different for males and females and the maturity occurs after 6 and 5 post marsupial stages for A. neapolitanus and A. ramondi respectively.

Key words: Amphipods gammarids, growth stages, morphological variations

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AGRADECIMENTOS. À Dra. Yoko Wakabara pela orientação e à Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP) pela bolsa concedida durante o desenvolvimento deste trabalho (Proc. no 75/1023).

Recebido em 16.VIII.1994; aceito em 13.V.1996.

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Datas de Publicação

  • Publicação nesta coleção
    16 Jul 2009
  • Data do Fascículo
    1996

Histórico

  • Recebido
    16 Ago 1994
  • Aceito
    13 Maio 1996
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