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 T.

Parasitology International

Elsevier

Año: 2006 vol. 55 p. 291 - 293

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¡À1.52, 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.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¡À1.52, 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.