A new species of Acaenodera (Digenea: Acanthocolpidae) parasitizing Conger orbignyanus (Pisces: Congridae) from the coasts of Argentina

ETCHEGOIN, JORGE A.; LANFRANCHI, ANA L.; CREMONTE, FLORENCIA; TIMI, JUAN TOMAS

PARASITOLOGY INTERNATIONAL

ELSEVIER IRELAND LTD

Año: 2006 vol. 55 p. 291 - 293

1383-5769

A new species, Acaenodera spinosior, is described based on specimens collected from the intestine of Conger orbignyanus Valenciennes (Pisces: Congridae) caught in waters off Mar del Plata (38¡ã08¡äS, 57¡ã32¡äW), Argentina. Five of 36 congers examined were parasitized (prevalence: 13.9%, mean intensity: 2.6 ¡À 1.52, range: 1¨C5). The new species is distinguished from its only congener, Acaenodera placophora Manter and Pritchard, 1960, a parasite of congers off Hawaii, by its larger size, lacking eyespots, and exhibiting a greater number of circumoral, mid-ventral and lateral spines. This is the first record of Acaenodera Manter and Pritchard, 1960 in Atlantic waters.