Penaeus vannamei Boone and Penaeus brasiliensis Latreille
Parasites of the Commercial Shrimp
Ten species of parasites are reported from Penaeus vannamei from the Huizache-Caimanero lagoon and coastal waters of Sinaloa, Mexico, two of which are new species of gregarines: Nematopsis vannamei, and N. sinaloensis. Other parasites found were the gregarines Nematopsis
sp. and Cephalolobus sp.; a trematode metacercaria of the family Opecoelidae; three larval nematodes: Thynnascaris sp., Spirocamallanus pereirai, and Ascarophis sp.; an unidentified gregarine cyst; an unidentified oval cyst from gills and eye stalks; and a commensal,
Eleven parasites were found in the study of Penaeus brasiliensis from Biscayne Bay, Florida. Of these, one gregarine and two cestodes are new species: Nematopsis brasiliensis, Parachristianella heteromegacanthus and Renibulbus penacus. The latter
trypanorhynchid also represents a new genus and family, Renibulbidae. New host records are given for Prochristianella penaei and Parachristianella monomegacantha (Trypanorhyncha). The geographic range of the latter species is extended. The other parasites found are Thelohania
duorara (Microsporida), Cephalolobus sp., an unidentified oval gill cyst similar to the one of P. vannamei, an unidentified cestode larva known from several penaeids, and two nematode larvae: Thynnascaris sp. and another unidentified species.
In comparison with
other members of the genus Penaeus whose parasitic fauna is known, juveniles of P. vannamei are lightly parasitized both in terms of number of species and incidence and intensity of infection; and those of P. brasiliensis, heavily parasitized. With the exception of the
lack of cestodes infecting P. vannamei, these penaeid shrimp are generally parasitized by species similar to those reported in the literature for Penaeus aztectus, P. duorarum, and P. setiferus.
Document Type: Research Article
Publication date: October 1, 1975
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