Aspectos ecológicos de endoparasitos de piranha vermelha (Pygocentrus nattereri, Kner, 1860) proveniente do rio Cuiabá

Abstract

This study evaluated the infrapopulations of parasites in red piranha

Nematodes in Hoplerytrinus unitaeniatus, Hoplias malabaricus and Pygocentrus nattereri (pisces characiformes) in Marajó Island, Brazil

“…larvae towards the musculature confirms data from Barros et al (2010) relating to specimens of P. nattereri in which the larvae presented 82.6% prevalence. However, Vicentin (2009) did not observe tropism of Eustrongylides sp.…”

“…larvae, which accounted for 98.34% of the nematode specimens at this site. This characteristic behavior was also documented by Barros et al (2010) in specimens of P. nattereri infected with Contracaecum sp. larvae, which presented 99% prevalence.…”

“…larvae, which presented 99% prevalence. Moreover, absence of these larvae in the musculature of P. nattereri has already been reported by Barros et al (2006), Vicentin (2009) and Barros et al (2010) and in H. malabaricus by Barros et al (2007) and Rodrigues (2010). Nevertheless, occurrences of Contracaecum sp.…”

“…Brazilian data (KOHN et al, 1988;MARTINS et al 2003MARTINS et al , 2005MARTINS et al , 2009MADI;SILVA, 2005;BARROS et al, 2006BARROS et al, , 2007BARROS et al, , 2010PARAGUASSÚ;LUQUE, 2007;VICENTIN, 2009;RODRIGUES, 2010) show that to date, most investigations dealing with parasites of hygiene and sanitary importance in H. unitaeniatus, H. malabaricus or P. nattereri have been conducted on specimens caught in aquatic environments of the Brazilian Amazon region. The only other investigations have been the studies by Martins et al (2005) dealing with H. unitaeniatus and H. malabaricus from the swamplands of the State of Maranhão; Barros et al (2006) with P. nattereri from the metropolitan area of Cuiabá, State of Mato Grosso (MT); Barros et al (2007) with H. malabaricus from the municipality of Santo Antonio do Leverger, MT;and Barros et al (2010) with P. nattereri in the Cuiabá river, municipality of Barão de Melgaço, MT.…”

“…The only other investigations have been the studies by Martins et al (2005) dealing with H. unitaeniatus and H. malabaricus from the swamplands of the State of Maranhão; Barros et al (2006) with P. nattereri from the metropolitan area of Cuiabá, State of Mato Grosso (MT); Barros et al (2007) with H. malabaricus from the municipality of Santo Antonio do Leverger, MT;and Barros et al (2010) with P. nattereri in the Cuiabá river, municipality of Barão de Melgaço, MT. The most compatible previous data for comparisons with our findings are from Martins et al (2005), who recovered samples of Contracaecum sp.…”