NOTES ON THE REPRODUCTION DF Neritina virgínea (LINNAEUS 1758) IN NORTHEAST BRAZIL (MOLLUSCA: GASTROPODA: NERITIDAE)

Autores/as

  • Helena Matthews Cascon Professora Adjunto do Departamento de Biologia e Pesquisadora do Instituto de Ciências do Mar, ambos da Universidade Federal do Ceará, Campus Universitário do Piei, Fortaleza, CE 60.000.
  • Inês Xavier Martins Professora Assistente do Centro de Ciências da Saúde da Universidade de Fortaleza, Campus Universitário do Porongabuçu, Fortaleza, CE 60.000.

DOI:

https://doi.org/10.32360/acmar.v32i1-2.31366

Palabras clave:

Neritina virginea, reproduction, larva[ development, Mollusca, Gastropoda.

Resumen

Reproductive system morphology, spawning, larva/ development, maturation period, and egg capsules of Neritina virginea (Linnaeus, 1758) were studied in the estuary of Cocó River, State of Ceará, Northeast Brazil. The female reproductive system ofN.virginea has two gonopores; the vaginal pore and the egg capsule exit. The egg capsules have in average 45 eggs a circular shape andare covered with sand grains. N.virginea has a intracapsular development that takes 288 hours in average. Reproductive activity concentrated during the months of July to December that is the dry season in this region. Field and laboratory data are compared.

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Publicado

2018-03-05

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