1995
DOI: 10.1590/s0101-81751995000400023
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Influence of the type of environment and of the hydrological level variation in endoparasitic infrapopulations of Pseudoplatystoma corruscans (Agassiz) and Schizodon borelli (Boulenger) (Osteichthyes) of the high Paraná River, Brazil

Abstract: (Wood land. 1935 ) was lhe only species Ihal presel1led a relalion ship helween lhe illlensily of infeclion and lhe environmenl. ln S. borelli only Cllcllllal/lIs pil/I/oi Travassos. Anigas & Pereira. 1928 rrcsel1led a relalionship wilh lhe env ironmenl. ln lhis case lhe mea n illlensi ly was grea ler in kl1lic env ironmel1l s. The high va lue s of lhe similarily ind ex in lhe lhrec environlllel1ls sludied indicale a considerable homoge neily of lhe endohelminths' species wilh regard 10 P. corruscol/S and S. … Show more

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Cited by 38 publications
(49 citation statements)
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“…The biometric data of siluriform hosts have been analyzed and were related to the parasitic indexes in several works (MACHADO et al, 1994;PAVANELLI, 2004;SANTOS, 2005;MOREIRA et al, 2005;BRASIL-SATO, 2006;BACHMANN et al, 2007). In the São Francisco River, parasitic indexes have been minimally influenced by fish size, and the possible cumulative effect of parasites, as proposed by Rohde (1993), has not been observed in parasite communities of fish in that hydric system.…”
Section: Discussionmentioning
confidence: 99%
See 1 more Smart Citation
“…The biometric data of siluriform hosts have been analyzed and were related to the parasitic indexes in several works (MACHADO et al, 1994;PAVANELLI, 2004;SANTOS, 2005;MOREIRA et al, 2005;BRASIL-SATO, 2006;BACHMANN et al, 2007). In the São Francisco River, parasitic indexes have been minimally influenced by fish size, and the possible cumulative effect of parasites, as proposed by Rohde (1993), has not been observed in parasite communities of fish in that hydric system.…”
Section: Discussionmentioning
confidence: 99%
“…With respect to the Digenea, in the Guaiba River, A. platense (as C. platense) was found parasitizing P. maculatus by Kohn and Fróes (1986) and Fortes et al (1993), respectively; in the Paraná Basin, the six Digenea species cited in P. maculatus from São Francisco River were common in the fauna of P. maculatus and their indexes were recorded and compared by Brasil-Sato and Pavanelli (2004); and in the Guandu River, Santos et al (2007) and Azevedo et al (2010), recorded A. compactum parasitizing P. maculatus. With relation to the Nematodes, in the Paraná Basin, Machado et al, (1994Machado et al, ( , 1995Machado et al, ( , 1996 (L., 1766). Among the helminths recorded in P. pohli, N. pimelodi -the sole acanthocephalan species -was described from the parasite specimens of the congeneric P. maculatus and was recorded by Santos and Brasil-Sato (2006) in Franciscodoras marmoratus Reinhardt, 1874 (Siluriformes, Doradidae) in the São Francisco River (type-locality).…”
Section: Discussionmentioning
confidence: 99%
“…Blackburn and Lawton (1994) and Blackburn and Gatson (1997) documented relationship between parasite abundance and body size. Machado et al (1994) found that increase in size and age of fish led to significant increase in the levels of parasitism. Szalai and Dick (1990) mentioned that the Contracaecum spp.…”
Section: Discussionmentioning
confidence: 99%
“…However, the evaluation of Machado et al (1994) indicated no relationship between host sex and parasitism. Our results show that females have higher prevalence rates than males, but without a significant difference between the sexes.…”
Section: Infection Levels and Host Gendermentioning
confidence: 93%