Ergasilus turucuyussp. n. (COPEPODA: ERGASILIDAE) DAS BRÂNQUIAS DE Acestrorhynchus falcatus(BLOCH, 1794) E A. falcirostris(CUVIER, 1819) (CHARACIFORMES: CHARACIDAE) DA AMAZÔNIA BRASILEIRA

Malta, José Celso de Oliveira; Varella, Angela Maria Bezerra

doi:10.1590/1809-43921996261076

Cited by 7 publications

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“…E. turucuyus were found only on gills of H. unimaculatus and A. falcirostris and showed similar and low infestation level for the two hosts. However, such infestation levels were lowest than those reported for A. falcatus and A. falcirostris from the Pacaás Novos river, in western Amazon, Brazil (Malta & Varella, 1996). Only females are parasites among the species of Ergasilidae, releasing infective forms that freely swim until they find a fish to infect; the males live freely in the zooplankton (Malta & Varella, 1996;Piasecki & AvenantOldewage, 2008).…”

Section: Resultsmentioning

confidence: 96%

“…No correlation of prevalence and abundance of these limnological parameters was found for S. gibbus and H. unimaculatus (Table 6). (Acácio et al, 2012;Luque et al, 2013;Tavares-Dias et al, 2015), and E. turucuyus (Malta & Varella, 1996;Luque et al, 2013;Hoshino, Hoshino, & Tavares-Dias, et al, 2014) have been recorded in fish species from Amazon. E. berbicensis is a parasite that is only slightly known in freshwater fish.…”

Section: Resultsmentioning

confidence: 97%

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<b>Host-parasite interaction between crustaceans of six fish species from the Brazilian Amazon

Vasconcelos

Tavares‐Dias

2016

Acta Sci. Biol. Sci.

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ABSTRACT. Host-parasite interactions between crustaceans and six fish species (Psectrogaster falcata, Ageneiosus ucayalensis, Acestrorhynchus falcirostris, Hemiodus unimaculatus, Serrasalmus gibbus and Geophagus proximus) from a reservoir in eastern Amazon, northern Brazil, were investigated. Eight hundred and seventy-eight parasites belonging to three crustacean species, Excorallana berbicensis, Argulus chicomendesi and Ergasilus turucuyus, which parasitized the hosts' mouth, gills and tegument, were collected from 295 fish and examined. High infestation levels were caused by E. berbicensis on the body surface of the hosts. Excorallana berbicensis showed aggregate dispersion, except in S. gibbus, while E. turucuyus showed random dispersion in A. falcirostris. The host's sex did not influence infestation by E. berbicensis, and high parasitism failed to affect the body conditions of the fish. In the case of some hosts, rainfall rates, temperature, dissolved oxygen levels and water pH affected the prevalence and abundance of E. berbicensis, the dominant parasite species. Results revealed that the environment and life-style of the hosts were determining factors in infestations by parasites. Current assay is the first report on E. berbicensis for the six hosts, as well as on A. chicomendesi for G. proximus and P. falcata.Keywords: body condition, ectoparasites, environment, freshwater fish, infestation.Interação hospedeiro-parasite entre crustáceos de seis espécies de peixes da Amazônia brasileira ESUMO. O presente estudo investigou a fauna de crustáceos parasitos em Psectrogaster falcata, Ageneiosus ucayalensis, Acestrorhynchus falcirostris, Hemiodus unimaculatus, Serrasalmus gibbus e Geophagus proximus de um reservatório da Amazônia oriental, norte do Brasil, bem como as interações parasito-hospedeiro-ambiente. Foram coletados 878 parasitos pertencentes a três espécies de crustáceos, Excorallana berbicensis, Argulus chicomendesi e Ergasilus turucuyus, que infestaram a boca, brânquias e tegumento dos hospedeiros. Elevados níveis de infestação foram causados por E. berbicensis na superfície corporal dos hospedeiros. E. berbicensis mostrou dispersão agregada, exceto em S. gibbus, enquanto E. turucuyus teve dispersão randômica em A. falcirostris. O sexo dos hospedeiros não influenciou os níveis de infestação por E. berbicensis e o elevado parasitismo não afetou as condições corporais dos peixes. Para alguns hospedeiros, foram observadas correlações significativas da prevalência e abundância de E. berbicensis com a precipitação pluviométrica, temperatura, níveis de oxigênio dissolvido e pH da água. Os resultados indicaram que o ambiente e hábito de vida dos hospedeiros foram fatores determinantes nas infestações parasitárias encontradas. Esse é o primeiro relato de E. berbicensis para esses seis hospedeiros, A. chicomendesi para G. proximus e P. falcata e E. turucuyus para H. unimaculatus.Palavras-chave: condição corporal, ectoparasitos, ambiente, peixes de água doce, infestação.

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Section: Resultsmentioning

confidence: 96%

Section: Resultsmentioning

confidence: 97%

<b>Host-parasite interaction between crustaceans of six fish species from the Brazilian Amazon

Vasconcelos

Tavares‐Dias

2016

Acta Sci. Biol. Sci.

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“…Argulus pestifer, Argulus multicolor, Argulus juparanaensis and Argulus amazonicus have frequently been observed in different fish species in the Brazilian Amazon region (MALTA, 1998). Ergasilus turucuyus, another crustacean parasitizing the gills of H. surinamensis, presented low infection levels (prevalence = 10.8% and mean intensity = 1.1), in comparison with Acestrorhynchus falcatus and Acestrorhynchus falcirostris (prevalence = 27.0% and mean intensity= 11) in the Pacaás Novos river in the western Amazon region (MALTA; VARELLA, 1996). Because only these Characiformes hosts were infected by E. turucuyus, it seems that these copepods have higher specificity than other species of crustaceans.…”

Section: Discussionmentioning

confidence: 99%

First study on parasites of Hemibrycon surinamensis (Characidae), a host from the eastern Amazon region

Hoshino

Tavares‐Dias

2014

Rev. Bras. Parasitol. Vet.

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This study was the first investigation of communities and infracommunities of parasites of Hemibrycon surinamensis. All the fish collected in a tributary of the Amazon river were parasitized by one or more parasite species. The Brillouin diversity index (HB) was 0.46 ± 0.28 and the mean species richness was 3.5 ± 1.2 parasites per host. A total of 14,734 parasites were collected, including Ichthyophthirius multifiliis and Piscinoodinium pillulare (Protozoa); Jainus hexops and Tereancistrum sp. (Monogenoidea); Ergasilus turucuyus and Argulus sp. (Crustacea); metacercariae of Derogenidae gen. sp.; metacercariae and adults of Genarchella genarchella (Digenea); and Cucullanus larvae and Contracaecum larvae (Nematoda). The dominant parasite was I. multifiliis, followed by P. pillulare. The parasites showed aggregated dispersion, except for E. turucuyus, which had random dispersion. The condition factor (Kn) indicated that the parasitism levels had not affected host body condition. The high levels of infection observed were due to host behavior, and this was discussed. This was the first report of I. multifiliis, P. pillulare, Argulus sp., E. turucuyus, G. genarchella, J. hexops and Tereancistrum sp. in H. surinamensis, and it expanded the occurrence of E. turucuyus and G. genarchella to the eastern Amazon region.

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“…Acestrorhynchus falcatus, A. falcirostris, gills, freshwater, Amazon River basin (Malta & Varella 1996).…”

Section: Ergasilus Turucuyus Malta and Varellamentioning

confidence: 99%

Checklist of Copepoda associated with fishes from Brazil

Luque

Tavares

2007

Zootaxa

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Ergasilus turucuyussp. n. (COPEPODA: ERGASILIDAE) DAS BRÂNQUIAS DE Acestrorhynchus falcatus(BLOCH, 1794) E A. falcirostris(CUVIER, 1819) (CHARACIFORMES: CHARACIDAE) DA AMAZÔNIA BRASILEIRA

Cited by 7 publications

References 1 publication

<b>Host-parasite interaction between crustaceans of six fish species from the Brazilian Amazon

<b>Host-parasite interaction between crustaceans of six fish species from the Brazilian Amazon

First study on parasites of Hemibrycon surinamensis (Characidae), a host from the eastern Amazon region

Checklist of Copepoda associated with fishes from Brazil

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