Nematodes associated with different arthropod species in Córdoba, Argentina.

LAX, P.; RONDAN DUEÑAS, J.C.; DOUCET, M.E

Coimbra

Congreso; XLIII Reunión Anual de la Organización de Nematólogos de los Trópicos Americanos (ONTA).; 2011

Organización de Nematólogos de los Trópicos Americanos (ONTA).

There is no information available about nematodes parasitizing diplopods for the province of Córdoba. Specimens of Argentocricus nodulipes (n=10) (Rhinocricidae), Orthoporus americanus (n=5) (Spirostreptidae), and Platinodesmus cordobensis (n=10) (Chelodesmidae) were collected from Córdoba city. The arthropods were dissected, the hindgut was excised and the nematodes present were removed. Nematodes were identified based on the analysis of morphological characters. A. nodulipes individuals were parasitized by juveniles and adults of the genera Rhigonema (Family Rhigonematidae), Heth (Hethidae), and representatives of the family Carnoyidae; all of them exhibited 100% prevalence (P). Females of Thelastoma sp. (Thelastomatidae) were detected in O. americanus, with a P value of 40%. Males and females of Thelastoma sp. were found in the intestine of P. cordobensis (P=10%), whereas juveniles of Oscheius myriophila (Rhabditidae) (P=30%) were found in the host’s hemocele. The high prevalence of the nematodes detected in A. nodulipes is noticeable. Except for the genus Thelastoma, the remaining nematodes observed are mentioned for Argentina for the first time.