Folia Parasitologica 39[1] 33-40 (1992)
MEXICONEMA-CICHLASOMAE GEN-ET SP (NEMATODA, DANICONEMATIDAE) FROM CICHLASOMA-SPP (PISCES) FROM MEXICO
- MORAVEC, F (reprint author), CZECHOSLOVAK ACAD SCI, INST PARASITOL, BRANISOVSKA 31, CS-37005 CESKE BUDEJOVICE, CZECHOSLOVAKIA
A new nematode genus and species, Mexiconema cichlasomae gen. et sp. n., is described from the abdominal cavity, viscera (mesenteries, swimbladder, liver, spleen, kidneys, intestinal lumen, serose cover of intestine) and rarely the skin below the scales of four species of cichlids, Cichlasoma urophthalmus (type host), C. helleri, C. motaguense and C. pearsei from the salt water coastal lagoon Celestun (N. Yucatan) (type locality) and several other freshwater, salt water and marine localities from Mexico. This dracunculoid nematode species represents a new genus of the recently established, hitherto monotypic family Daniconematidae. The new genus Mexiconema gen. n. is characterized, in contrast to Daniconema Moravec et Koie, 1987, mainly by the absence of a pair of large internal, forwardly protruding dorsoventral cephalic papillae, presence of two giant cell nuclei in the glandular section of the oesophagus, caudal processes in both sexes and an unpaired sclerotized copulatory plate in the male; preanal papillae are lacking on the male tail. Mexiconema cichlasomae shows certain affinities with members of the families Skrjabillanidae and Guyanemidae.
Published: March 1, 1992 Show citation
