Parasites component community in wild population ofPterophyllum scalareSchultze, 1823 andMesonauta acoraCastelnau, 1855, cichlids from the Brazilian Amazon

Abstract

The aim of the present study was to compare the component parasite communities of the Pterophyllum scalare and Mesonauta acora cichlids in the Amazon River system in northern Brazil. From September to December 2012, 42 specimens of P. scalare and 38 specimens of M. acora were captured using hand nets and gillnets in the Igarap e Fortaleza basin, a tributary of the Amazon River in the state of Amap a. Of the P. scalare specimens examined, 97.6% were parasitized by Ichthyophthirius multifiliis, Tripartiella sp., Trichodina nobilis, Gussevia spiralocirra, Posthodiplostomum sp., Capillaria pterophylli, Ichthyouris sp. and Gorytocephalus spectabilis. Similarly, all specimens of M. acora were parasitized by I. multifiliis, Tripartiella sp, T. nobilis, Sciadicleithrum joanae, Posthodiplostomum sp., Pseudoproleptus sp., Ichthyouris sp. and G. spectabilis. However, for both hosts the dominance was of I. multifiliis and with an overdispersion of parasites. Parasite communities of P. scalare and M. acora were similar and only Pseudoproleptus sp. and Posthodiplostomum sp. were larvae. Brillouin diversity, parasite species richness and evenness were higher for M. acora than for P. scalare, which presented a negative correlation of parasite abundance with body size. Both cichlid species had parasite communities characterized by low diversity and low species richness, with a predominance of ectoparasite species and greatest richness of helminth species, with a low abundance of endoparasites. This was the first study on the parasite diversity in wild P. scalare and M. acora.

Multiparasitism in gills of Metynnis lippincottianus from the environmental protection area of Curiaú river, Eastern Amazon

“…. Trichodina nobilis parasitized the gills in 64.3% and 84.2%, respectively, of in Pterophyllum scalare and Mesonauta acora individuals (FARIAS PANTOJA et al, 2015).…”

Nematofauna of red piranha Pygocentrus nattereri (Kner, 1958) (Characiformes: Serrasalmidae) from Amazonia, Brazil

“…were reported for the first time in the prawn Macrobrachium amazonicum (Heller, 1862) from Mexiana island (Amazon river delta), state of Pará (MORAVEC & SANTOS, 2009). Subsequently, the third-stage larvae of this nematode were reported in the Satanoperca jurupari Heckel, 1840 and Ageneiosus ucayalensis Castelnau, 1855(MELO et al, 2011, Aequidens tetramerus (Heckel, 1840) (TAVARES-DIAS et al, 2014), Mesonauta acora Castelnau, 1855(PANTOJA et al, 2015b, for second time from a fish in the Neotropical region. We agree with Melo et al (2011) that this fish should be considered a paratenic host for this nematode species.…”

“…larvae (BARROS et al, 2010;EIRAS et al, 2010;VICENTIN et al, 2013), Contracaecum sp. larvae (PAVANELLI et al, 2004;VICENTIN et al, 2013), Procamallanus (S.) inopinatus Travassos, Artigas & Pereira, 1928(THATCHER, 2006VICENTIN et al, 2013), Brevimulticaecum sp. larvae (VIEIRA et al, 2010;VICENTIN et al, 2013), Procamallanus sp.…”

Monogéneos de Astyanax aeneus (Characidae) y Oreochromis niloticus (Cichlidae) en la cuenca del río Ixtapan, México

“…La prevalencia e intensidad promedio de los monogéneos de A. aeneus y O. niloticus en este estudio son más bajas que las registradas en ríos y lagos de Chiapas, Yucatán, Morelos y Veracruz (Jiménez-García et al, 2001;Kritsky et al, 1994;Salgado-Maldonado et al, 2001. Aunque en este trabajo no se evaluaron los factores bióticos y abióticos, la prevalencia e intensidad promedio de los monogéneos puede depender de la temperatura del agua (Blazek et al, 2008;Dávidová et al, 2005;Koskivaara, 1992;Sereno-Uribe et al, 2012), el hábitat léntico o lótico de los peces (Acosta et al, 2013;Dogiel, 1961;Farias-Pantoja et al, 2015), la respuesta inmune (Bowden, 2008) o la densidad de los hospederos (Bagge et al, 2004), por lo tanto, sugerimos que en trabajos futuros se evalúe la influencia de dichos factores en la prevalencia e intensidad de este grupo de helmintos.…”