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vol.66 número1DESCRIPCION DE LAS ESTRUCTURAS GENITALES Y ESTADOS INMADUROS DE PSEUDOCERURA THORACICA BUTLER, 1882 (LEPIDOPTERA: NOCTUIDAE: CUCULLIINAE)PRIMER REGISTRO DE MUSCULIUM ARGENTINUM (D'ORBIGNY 1835) (BIVALVIA: SPHAERIIDAE) EN AGUAS CONTINENTALES CHILENAS índice de autoresíndice de materiabúsqueda de artículos
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Gayana (Concepción)

versión On-line ISSN 0717-6538

Resumen

LUNASCHI, Lia I.. REDESCRIPTION OF SACCOCOELIOIDES OCTAVUS SZIDAT, 1970 AND S. BACILLIFORMIS SZIDAT,1973 (DIGENEA, HAPLOPORIDAE), PARASITES FROM FISHES OF THE GENUS ASTYANAX BAIRD & GIRARD 1854 PISCES: CHARACIDAE. Gayana (Concepc.) [online]. 2002, vol.66, n.1, pp. 31-37. ISSN 0717-6538.  http://dx.doi.org/10.4067/S0717-65382002000100005.

ABSTRACT Saccocoelioides octavus Szidat 1970 and S. bacilliformis Szidat 1973 (Digenea, Haploporidae) are redescribed and fully illustrated upon type specimens lodged at the Helminthological Collection, Museo Nacional de Ciencias Naturales "Bernardino Rivadavia", Buenos Aires, Argentina. The original descriptions are brief, unprecise and the morphometric data given were taken from only one specimen for each species. Detailed morphological study of five type specimens of S. octavus collected from piloric ceca of Astyanax fasciatus (Cuv.) and holotype and seven paratypes of S. bacilliformis from piloric ceca of Astyanax bipunctatus proved that both species are morphologically very similar. Both are characterized by having a spinous tegument, the ventral sucker of the same size or slightly larger or smaller than the oral sucker and two groups of a variable number of vitelline follicles, in pre and post-testicular position. The S. bacilliformis Szidat 1973 is considered of junior synonyms S. octavus Szidat 1970

Palabras clave : Saccocoelioides octavus; Saccocoelioides bacilliformis; Haploporidae; Digenea; Astyanax; Characidae; Argentina.

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