First record of Rhipidocotyle santanaensis (Digenea) parasitizing Acestrorhynchus lacustris from Batalha River, Brazil

Abstract

This paper describes the occurrence of digenetic Rhipidocotyle santanaensis Lunaschi, 2004 in Brazil. This parasite was found in the liver, heart, gonads, intestine, pyloric caeca, stomach, swim bladder and cavity of Acestrorhynchus lacustris (Lütken, 1875) from the Batalha River, São Paulo State, with higher incidence in gonads and digestive tract. The parasite specimens found in this study showed morphological characteristics very similar to specimens from Argentina, with differences only in relation to the ejaculatory duct and seminal vesicle. However, Brazilian specimens presented great morphometrical differences between specimens described in Argentina, with much higher measures. This is the first record of this metazoan parasite species in Brazil and in this host fish.Keywords: Acestrorhynchidae, Bucephalidae, morphometrical differences, freshwater. Palavras-chave: Acestrorhynchidae, Bucephalidae, diferenças morfométricas, água doce. Primeiro registro de

Digenea parasites of Acestrorhynchus falcirostris (Osteichthyes, Acestrorhynchidae) in the state of Amazonas, Brazil

“…In South America, this species was also reported in Brazil by Pedro et al (2016b), parasitizing A. lacustris. The material studied herein is longer than the original specimens and smaller than Pedro's material, with smaller eggs.…”

PARASITE DIVERSITY OF <i>Hoplosternum littorale</i> FROM THE TIETí­Å -BATALHA RIVER BASIN, SOUTHEASTERN BRAZIL

“…Pelegrini et al (2018), also observed this pattern in a study with Proloricaria prolixa (Isbrücker & Nijssen, 1978), where the diversity index was higher (0.94) than the Margalef Index (0.83) and Pielou Index (0.60). In the study by Pedro et al (2016) with Acestrorhynchus lacustris (Lütken, 1875), this pattern was also observed (H = 1.42; D = 1.28; J = 0.75). As the present study, Leite et al (2018) in an analysis of Prochilodus lineatus (Valenciennes, 1837), obtained greater Margalef Index (1.83) than diversity (0.81).…”

“…The Batalha River, despite presenting a diverse ichthyofauna (Santos and Heubel, 2008), has been the target of few studies involving ecological analyzes of parasitic fish communities (Pedro et al, 2016;Leite et al, 2018;Negrelli et al, 2018;Pelegrini et al, 2021). Thus, this study aimed to inventory the parasitic fauna of H. littorale specimens from the Batalha River, São Paulo, Brazil, as well as to present considerations on the composition and structure of the parasitic communities present in this host.…”

Metazoan endoparasites of Acestrorhynchus lacustris (Actinopterygii: Acestrorhynchidae) from lagoons bordering the upper and middle São Francisco river basin, Brazil

“…sp., Contracaecum sp., Goezia brasiliensis Moravec, Kohn & Fernandes, 1994, Guyanema raphiodoni Moravec, Kohn & Fernandes, 1993, T. travassosi, P. caudata, Spiroxys contortus (Rudolphi, 1819, Heliconema sp. and Procamallanus (S.) inopinatus (Nematoda) (Pedro et al, 2016a); Rhipidocotyle santanaensis Lunaschi, 2004 (Digenea) (Pedro et al, 2016b); and Contracaecum sp. as a bioindicator of metal pollution (Leite et al, 2017).…”