Morphological abnormalities in Acartia lilljeborgii Giesbrecht (1889) (Copepoda, Calanoida) in a tropical estuary under industrial development.

Morphological abnormalities in crustaceans have been registered and several are attributed to pollution and others anthropogenic activities. This study reports for the first time a temporal record of the amount and variety of morphological abnormalities in Acartia lilljeborgii, in an impacted neotropical estuary. The specimens were obtained from Suape port area, Northeast Brazil, between May 2009 and September 2010 using a 300 µm plankton net.