NEW RECORD OF MALFORMATION IN THE TRUE CRAB UCIDES CORDATUS (LINNAEUS, 1763) (CRUSTACEA, DECAPODA, UCIDIDAE), AT BRAZILIAN COAST
DOI:
https://doi.org/10.65259/rnzool.v6i1.83Keywords:
anomalous crustacean, estuarine system, Mundaú, Manguaba, Northeast of Brazil, OcypodoideaAbstract
Morphological abnormalities have been related for several groups of Crustacea, such as Cladocera, Copepoda and Decapoda. Such alterations are caused by parasites, complications during the molt, abnormal wound healing, mutations in the larval stage, or due to the action of chemical products. During samples accomplished at the Mundaú/Manguaba Estuarine Lagoon Complex (CELMM), State of Alagoas, Brazil, three individuals of Ucides cordatus were found with morphological anomalies: a female with asymmetric number of pereiopods; a male with deformity in the sixth abdominal somite and telson; and a female with asymmetric carapace. They occurred in low frequency, corresponding to 0.40% of the total sampled crabs. The size and weight of the abnormal individuals are the expected for the studied population. The causes of these anomalies were not determined, but we believe that they are consequences of the presence of pollutants at the area.
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