Producción CyT
Congreso
Autoría
AILAN CHOKE, LORENA GISELA
;
Geraldine Ramallo
;
Dora Davies
Fecha
2017
Editorial y Lugar de Edición
INST HISTOL EMBRIOL-CONICET
ISSN
1667-5746
Resumen
Información suministrada por el agente en
SIGEVA
Knowledge about freshwater parasitic nematodes in Salta province is limited. Thus, an analysis of nematodes assemblage composition in a section of the basins of rivers Bermejo and Juramento was carried out and parasitic infection indicators were calculated. From June 2014 to March 2016 Siluriformes, Characiformes and Cyprinodontiformes fishes were captured. Nematodes were fixed in 10% formalin, cleared in lactophenol and identified. Richness (S), abundance (N); similarity of Bray-Curtis, equita...
Knowledge about freshwater parasitic nematodes in Salta province is limited. Thus, an analysis of nematodes assemblage composition in a section of the basins of rivers Bermejo and Juramento was carried out and parasitic infection indicators were calculated. From June 2014 to March 2016 Siluriformes, Characiformes and Cyprinodontiformes fishes were captured. Nematodes were fixed in 10% formalin, cleared in lactophenol and identified. Richness (S), abundance (N); similarity of Bray-Curtis, equitability (J) and diversity (H) indices; prevalence (P) and mean intensity (IM) were calculated. The followingwere obtained: 100 Procamallanus (Spirocamallanus) hilarii in Astyanax spp. (P=13.9%; IM=1.7) and 1 in Characidium fasciatum (P=7.7%; IM=1); 41 Procamallanus (Spirocamallanus) pintoi (P=46.9%; IM=1.8) in Corydoras paleatus; 18 Rhabdochona (Rhabdochona) acuminata (P=8.8%; IM=2.6) and 3 Cucullanus (Cucullanus) pinnai pinnai (P=1.3%; IM=3) in Trichomycterus spegazzini; 2 Contracaecum sp. (P=1.4%; IM=2) in Jenynsia alternimaculata and 2 in Astyanax spp. (P=0.5%; IM=1) and 21 Raphidascaris sp. (P=11.3%; IM=2.6) in Rineloricaria steinbachi. The Bermejo basin had higher species richness (S=5) than the Juramento basin (S=3). Diversity, abundance and equitability were significantly higher in the Bermejo basin (H=1.38; N=100, J=0.86) than in the Juramento basin (H=0.78; N=88, J=0.71) (P=0.001); this could be due to greater fish diversity in the Bermejo basin. The similarity between basins was 62%: they share P. (S.) hilarii and P. (S.) pintoi. Raphidascaris sp., R. (R.) acuminata and C. (C.) pinnai pinnai were found only in the Bermejo basin and Contracaecum sp. only in the Juramento basin.
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Palabras Clave
Parasitic nematodesNorthwestern ArgentinaFreshwater fishes