Spawn and larval development of Pleuroploca aurantiaca (Lamarck, 1816) (Gastropoda: Fasciolariidae) from Northeast Brazil

Authors

  • Carlos A. O. Meirelles Departamento de Engenharia de Pesca, Mestrado em Engenharia de Pesca, Universidade Federal do Ceará - Departamento de Biologia, Laboratório de Malacologia, Universidade Federal do Ceará
  • Helena Mattews-Cascon Departamento de Biologia, Laboratório de Malacologia, Universidade Federal do Ceará

DOI:

https://doi.org/10.3989/scimar.2005.69n2199

Keywords:

reproduction, development, Mollusca, Fasciolariidae, Pleuroploca, Pleuroploca aurantiaca

Abstract


Spawn and larval development stages of Pleuroploca aurantiaca from northeast Brazil are described. The reproductive period lasted from August to December, with a peak in November. Spawn masses were composed of 29 ± 3 vase-shaped capsules which measured 9 ± 1 mm (n = 30) in length and 4.5 ± 0.5 mm (n = 30) in width. The exit plug was located on the apical area and measured 2.5 ± 0.5 mm (n = 30) in diameter. Each capsule had 353 ± 59 (n = 10) eggs that measured 240 ± 1 µm (n = 15) in diameter. On the tenth day, the intracapsular veliger stage was observed. The intracapsular pediveliger stage was observed on the twenty first day, when the individuals had a functional foot and a reduced velum. Hatching occurred on the thirtieth day, when the early juvenile measured 3 to 5 mm in length and there was no remaining velum. Only 1% of the eggs developed to the hatching stage. The rest were nurse eggs used by embryos as a food resource. Pleuroploca aurantiaca has an intracapsular metamorphosis development type.

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Published

2005-06-30

How to Cite

1.
Meirelles CAO, Mattews-Cascon H. Spawn and larval development of Pleuroploca aurantiaca (Lamarck, 1816) (Gastropoda: Fasciolariidae) from Northeast Brazil. scimar [Internet]. 2005Jun.30 [cited 2020Nov.25];69(2):199-204. Available from: http://scientiamarina.revistas.csic.es/index.php/scientiamarina/article/view/247

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