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Morphological abnormalities of Acartia lilljeborgi (Copepoda, Crustacea) in the Espírito Santo Bay (E.S. Brazil).

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Abstract

We report on morphological abnormalities observed in Acartia lilljeborgi in Espírito Santo Bay (E.S. – Brazil). Samples were collected at six stations; five inside the bay and one outside of it, in March 1991–92 (raining season) and September 1991–92 (dry season) during 3 days. Biotic and abiotic variables were also determined. About 30% of the specimens exhibited morphological abnormalities, such as intestinal prolapse and partial rupture of the chitinous carapace accompanied with a mass extrusion of cell material and protoplasm. The proportion of young forms of A. lilljeborgi with abnormalities was greater than that of adult forms (59%). A. lilljeborgi can therefore be used as a possible indicator of environmental conditions in the bay.

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  1. Departamento de Zoologia, Instituto de Biologia, U.F.R.J., CCS, Bloco A, Cidade Universitária, CEP: 21, 941-590, Rio de Janeiro, Brazil

    Cristina de Oliveira Dias

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  1. Cristina de Oliveira Dias
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de Oliveira Dias, C. Morphological abnormalities of Acartia lilljeborgi (Copepoda, Crustacea) in the Espírito Santo Bay (E.S. Brazil).. Hydrobiologia 394, 249–251 (1999). https://doi.org/10.1023/A:1003502624336

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  • DOI: https://doi.org/10.1023/A:1003502624336

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