A new species of Demidospermus Suriano, 1983 (Monogenea) parasite of gills of Auchenipterus osteomystax (Auchenipteridae), from the upper Paraná river floodplain, Brazil - DOI: 10.4025/actascibiolsci.v32i1.3368

Acta Scientiarum: Biological Sciences

Ana Carolina Figueredo Lacerda¹  Gilberto Cézar Pavanelli¹  Ricardo Massato Takemoto¹  Fernando de Castro Tavernari² 

[1] UEM;UFRPE;

关键词: Auchenipterus osteomystax;    Demidospermus;    parasite;    Monogenea;    Paraná river;   

DOI  :  10.4025/actascibiolsci.v32i1.3368

来源: DOAJ

【 摘 要 】

A new species of Demidospermus Suriano, 1983 is described from the gills of Auchenipterus osteomystax Miranda-Ribeiro, 1918 (Auchenipteridae), collected in the upper Paraná river floodplain, Brazil. The gills were removed and preserved in 5% formalin. Later the parasites were removed from the gills with the aid of a stereomicroscope and conserved in 70% alcohol. Some specimens were stained with Gomori’s trichrome, dehydrated in absolute alcohol and cleared with faia creosote to observe the internal organs. Other specimens were mounted in Hoyer’s medium for the study of the sclerotized structures. The present study describes a new monogenetic species, Demidospermus osteomystax n. sp., characterized by: tandem gonads; V-shaped haptoral bars with articulation; sinistral, non-sclerotized vagina; same-size anchors and absence of bulb in the cirrus.

【 授权许可】

Unknown