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Previous issue date: 2013-01-25 / CAPES / CNPq / This study aimed to identify the parasite species of eight forage fish species from the Tr?s Marias reservoir; to clarify some aspects about their parasite faunas through the quantification of the parasite parameters (prevalence, intensity and , abundance); to determine diversity indices of each endocommunity; to compare the endoparasite communities using qualitative and quantitative methods; and to investigate which biotic and abiotic factors were relevant in the endoparasite communities structuration. A total of 492 fish (Characiformes, Characidae) were collected in the Tr?s Marias reservoir (18?12'59"S, 45?17'34"W), upper S?o Francisco river, State of Minas Gerais, between May 2003 and July 2010. Of these total, 44 specimens were of Astyanax bimaculatus (Linnaeus, 1758), 76 of Astyanax fasciatus (Cuvier, 1819), 70 of Bryconops affinis (G?nther, 1864), 64 of Hemigrammus marginatus Ellis, 1911, 41 of Moenkausia costae (Steindachner, 1907), 51 of Orthospinus franciscensis (Eigenmann, 1914), 63 of Tetragonopterus chalceus Spix & Agassiz, 1829 and 83 of Triportheus guentheri (Garman, 1890). Were found 21 endoparasite species among the eight communities ? Digenea: Creptotrema creptotrema Travassos, Artigas & Pereira, 1928, Magnivitellinum simplex Kloss, 1966, unidentified species of Digenea (adults), Austrodiplostomum sp. and Clinostomum marginatum (Rudolphi, 1819) Braun, 1899 (metacercariaes); Eucestoda: unidentified species of Cyclophyllidea (metacestode) and unidentified species of Proteocephalidae (plerocercoids); Nematoda: Procamallanus saofranciscencis Moreira, Oliveira & Costa, 1994, Rhabdochona spA., Spinitectus rodolphiheringi Vaz & Pereira, 1934 (adults), Contracaecum sp., Hysterothylacium sp., Goezia sp., unidentified species of Cucullanidae, Procamallanus sp., Procamallanus (Spirocamallanus) sp., Spiroxys sp., Rhabdochona sp. and Cystidicoloides fischeri (Travassos, Artigas & Pereira, 1928) (larvas); Myxozoa: Henneguya sp. (plasmodium with spores); and Protozoa (Apicomplexa): Calyptospora sp. (cysts with oocysts). Seven of these species were more frequent between the eight hosts: plerocercoids of Proteocephalidae, P. saofranciscencis, Contracaecum sp., Hysterothylacium sp., Spiroxys sp., Rhabdochona sp. and Henneguya sp.. The A. bimaculatus was the richest (16 endoparasite species) and the T. guentheri was the most diverse (Shannon-Wiener = 0,86) communiity. The H. marginatus was the less rich (nine taxa) and diverse community (Shannon-Wiener = 0,03). The most qualitative similarity was between the A. bimaculatus and A. fasciatus communities, while the most quantitative similarity occurred between the H. marginatus and O. franciscensis communities. The structure of parasite communities was mainly influenced by five factors: biotic ? fish species, size and diet; and abiotic: water electrical conductivity and fish collection period. However, the fish diet seems to be the major determining composition of the parasite communities of forage fish from the Tr?s Marias reservoir. / Este trabalho teve como objetivos identificar as esp?cies de parasitos de oito esp?cies de peixes forrageiros do reservat?rio de Tr?s Marias; esclarecer alguns aspectos sobre suas faunas parasit?rias atrav?s da quantifica??o dos par?metros parasit?rios (preval?ncia, intensidade e abund?ncia); determinar ?ndices de diversidade de cada endocomunidade; comparar quantitativa e qualitativamente as comunidades endoparasit?rias desses oito hospedeiros; e investigar quais fatores bi?ticos e abi?ticos foram relevantes na estrutura??o das comunidades endoparasit?rias. Um total de 492 peixes (Characiformes, Characidae) foram coletados no reservat?rio de Tr?s Marias (18?12'59"S, 45?17'34"W), alto rio S?o Francisco, Minas Gerais, entre maio de 2003 e julho 2010. Desse total, 44 esp?cimes eram de Astyanax bimaculatus (Linnaeus, 1758), 76 de Astyanax fasciatus (Cuvier, 1819), 70 de Bryconops affinis (G?nther, 1864), 64 de Hemigrammus marginatus Ellis, 1911, 41 de Moenkausia costae (Steindachner, 1907), 51 de Orthospinus franciscensis (Eigenmann, 1914), 63 de Tetragonopterus chalceus Spix & Agassiz, 1829 e 83 de Triportheus guentheri (Garman, 1890). Foram encontradas 21 esp?cies de endoparasitos dentre as oito comunidades - Digenea: Creptotrema creptotrema Travassos, Artigas & Pereira, 1928, Magnivitellinum simplex Kloss, 1966, uma esp?cie n?o identificada (adultos), Austrodiplostomum sp. e Clinostomum marginatum (Rudolphi, 1819) Braun, 1899 (metacerc?rias); Eucestoda: esp?cie n?o identificada de Cyclophyllidea (metacestoide) e esp?cie n?o identificada de Proteocephalidae (plerocercoides); Nematoda: Procamallanus saofranciscencis Moreira, Oliveira & Costa, 1994, Rhabdochona spA., Spinitectus rodolphiheringi Vaz & Pereira, 1934 (adultos), Contracaecum sp., Hysterothylacium sp., Goezia sp., esp?cie n?o identificada de Cucullanidae, Procamallanus sp., Procamallanus (Spirocamallanus) sp., Spiroxys sp., Rhabdochona sp. e Cystidicoloides fischeri (Travassos, Artigas & Pereira, 1928) (larvas); Myxozoa: Henneguya sp. (plasm?dio com esporos); e Protozoa (Apicomplexa): Calyptospora sp. (cistos com oocistos). Sete dessas foram mais frequentes dentre os oito hospedeiros: plerocercoides de Proteocephalidae, P. saofranciscencis, Contracaecum sp., Hysterothylacium sp., Spiroxys sp., Rhabdochona sp. e Henneguya sp.. A comunidade de A. bimaculatus foi a mais rica (16 esp?cies de endoparasitos) e a de T. guentheri a mais diversa (Shannon-Wiener = 0,86). A comunidade de H. marginatus foi a menos rica (nove t?xons) e diversa (Shannon-Wiener = 0,03). A maior similaridade qualitativa foi entre as comunidades de A. bimaculatus e A. fasciatus, enquanto que a maior similaridade quantitativa se deu entre as comunidades de H. marginatus e O. franciscensis. A estrutura das comunidades parasit?rias foi influenciada principalmente por cinco fatores: bi?ticos ? esp?cie, comprimento e dieta dos peixes; e abi?ticos ? condutividade el?trica da ?gua e ?poca de coleta dos peixes. Contudo, a dieta dos peixes pareceu ser o maior determinante da composi??o das comunidades endoparasit?rias dos forrageiros do reservat?rio de Tr?s Marias.
| Identifer | oai:union.ndltd.org:IBICT/oai:localhost:jspui/2383 |
| Date | 25 January 2013 |
| Creators | ALBUQUERQUE, M?rcia Cavalcanti de |
| Contributors | Brasil-Sato, Marilia de Carvalho, Brasil-Sato, Marilia de Carvalho, Taconeli, C?sar Augusto, Freire, Delir Corr?a Gomes Mau?s da Serra, Clapp, Michelle Daniele dos Santos, Silva, Jairo Pinheiro da |
| Publisher | Universidade Federal Rural do Rio de Janeiro, Programa de P?s-Gradua??o em Ci?ncias Veterin?rias, UFRRJ, Brasil, Instituto de Veterin?ria |
| Source Sets | IBICT Brazilian ETDs |
| Language | Portuguese |
| Detected Language | English |
| Type | info:eu-repo/semantics/publishedVersion, info:eu-repo/semantics/doctoralThesis |
| Format | application/pdf |
| Source | reponame:Biblioteca Digital de Teses e Dissertações da UFRRJ, instname:Universidade Federal Rural do Rio de Janeiro, instacron:UFRRJ |
| Rights | info:eu-repo/semantics/openAccess |
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