Endoparasite fauna of Brycon amazonicus and B. melanopterus(Characidae, Bryconinae) from Negro and Solimões rivers, Amazon, Brazil

Acta Amazonica

Thamy Santos Ribeiro¹  Bruno Hideo Ueda¹  Gilberto Cezar Pavanelli¹  Ricardo Massato Takemoto¹ 

关键词: Negro River;    Solimões River;    'matrinxã';    metazoan parasites;    nematode;    Rio Negro;    Rio Solimões;    parasitos metazoários;    'matrinxã';    nematóides;   

DOI  :  10.1590/1809-4392201502153

来源: SciELO

【 摘 要 】

ABSTRACTCongeneric host species present similar biological and behavioral aspects, what may favor the presence of a similar parasite fauna. The aim of the present study was to compare the composition and structure of the parasite community from congeneric species, Brycon amazonicus and B. melanopterus, collected on the Negro and Solimões Rivers. The fish internal organs were longitudinally opened and analyzed under stereomicroscope. The examination revealed that B. amazonicuswas parasitized by Procamallanus(Spirocamallanus) inopinatus(26.7% and 35.5%), Contracaecum type 2 (10% and 16.13%) and Rhabdochona acuminata(0% and 3.23%), prevalence values for Negro and Solimões River, respectively. The analysis of B. melanopterus, a fish species found only in the Solimões River, revealed P.(S.) inopinatus(33.3%), Contracaecum type 1 (60%) and R. acuminata(3.34%). These results indicate that the taxonomic proximity of the hosts was a stronger influence on the parasite species than external host environment.

【 授权许可】

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