CEPAVE 05420
CENTRO DE ESTUDIOS PARASITOLOGICOS Y DE VECTORES
Unidad Ejecutora - UE
artículos
Título:
Contracaecum chubutensis n. sp. New anisakid species parasitizing the Imperial Cormorant Phalacrocorax atriceps from the North Patagonian coast, Argentina.
Autor/es:
GARBIN L.; DIAZ J.I.; CREMONTE, F.; NAVONE G.T
Revista:
JOURNAL OF PARASITOLOGY
Editorial:
Allen Press
Referencias:
Año: 2008 vol. 94 p. 852 - 859
ISSN:
0022-3395
Resumen:
The anisakid species Contracaecum chubutensis n. sp. was found parasitizing the imperial cormorant Phalacrocorax atriceps at 2 different localities -Bahía Bustamante, 45º11S, 66º30W and Puerto Madryn, 42º47´S, 65º02W- on the Patagonian coast. Morphometrical analysis and further studies on adult specimens of C. chubutensis n. sp. and fourth-stage larvae of Contracaecum sp. were done using light and scanning electron microscopy. The possession of 7 pairs of tail papillae and their disposition differentiate this new species from C. osculatum, C. radiatum, C. plagiaticium, and C. mirounga. Double-sized spicules separate it from C. variegatum and C. pelagicum. Moreover, the paracloacal papillae disposition and tail shape differentiate this new species from C. travassosi. The presence of bifurcated interlabia disconnect it from C. ogmorhini and C. margolisi. Three well-marked lip notches, sharp tail shape, and transversal paracloacal papillae disposition distinguishes C. chubutensis n. sp. from C. magnipapillatum and C. septentrionale. The species here described can be differentiated from C. caballeroi by their bifurcated interlabia, longer spicules, and for possessing more precloacal papillae pairs. It can be separated from C. rudolphii by a thinner interlabia at the base, deeper lip notches, a sharper tail, the disposition of transversal paracloacal papillae, and greater distance between both papillae of the first subventral distal papillae pair. In addition, fourth-stage larvae recovered from the same host and localities were identified and described as Contracaecum sp. Ecological parameters of prevalence, mean intensity, and mean abundance were calculated for adults (P: 66.7 %, MI: 4.0, and MA: 2.67), and larvae (P: 83 %, MI: 8.5, MA: 7.1), respectively.
