Twenty three captive giant pandas, fecal specimens and stomach juice from five captive giant pandas(Ailuropoda melanoleuca)were tested for ciliate in 2004. Of them, ciliates of Epdinium spp.and Entodinium spp.were fou...Twenty three captive giant pandas, fecal specimens and stomach juice from five captive giant pandas(Ailuropoda melanoleuca)were tested for ciliate in 2004. Of them, ciliates of Epdinium spp.and Entodinium spp.were found in the stomach of five giant panda. Density of ciliates in each stomach of giant pandas were 4.21×10 4 ind./ml, 6.98×10 4 ind./ml, 3.05×10 4 ind./ml, 4.46×10 4 ind./ml and 4.38×10 4 ind./ml respectively. But all the fecal specimens were negative.展开更多
Currently,new species of freshwater fish trypanosomes,which are economically important parasites,are being described based on subjectively selected features,i.e.,their cell morphology and the host species.We have perf...Currently,new species of freshwater fish trypanosomes,which are economically important parasites,are being described based on subjectively selected features,i.e.,their cell morphology and the host species.We have performed detailed phylogenetic and haplotype diversity analyses of all 18S rRNA genes available for freshwater fish trypanosomes,including the newly obtained sequences of Trypanosoma carassii and Trypanosoma danilewskyi.Based on a sequence similarity of 99.5%,we divide these trypanosomes into 15 operational taxonomic units,and propose three nominal scenarios for distinguishing T.carassii and other aquatic trypanosomes.We find evidences for the existence of a low number of freshwater fish trypanosomes,with T.carassii having the widest geographic and host ranges.Our analyses support the existence of an umbrella complex composed of T.carassii and two sister species.展开更多
基金This work was supported by the Natural Science Foundation of Chongqing (9061) and the Scientific and Technological Research Foundation ofChongqing Education Committee (030805)
文摘对采自重庆地区寄生于鲢、鳙及草鱼鳃上的5种外寄生车轮虫进行了形态学及分类学研究,其分别隶属于:车轮虫属、小车轮虫属及三分虫属,其中包含1新种和中国2新纪录。即钝圆车轮虫Trichodina obtusiformissp . nov .,急尖车轮虫T. acutaLom,1961,显著车轮虫T. nobilisChen ,1963,周丛小车轮虫Trichodinella epizootica( Rabbe ,1950)Sramek-Husek ,1953和大型三分虫Tripartiella macrosomaBasson & Van As ,1987。文中对新种进行了详细的描述并提供了新种及已知种的附着盘银染标本之显微照片及齿体线条图。
文摘Twenty three captive giant pandas, fecal specimens and stomach juice from five captive giant pandas(Ailuropoda melanoleuca)were tested for ciliate in 2004. Of them, ciliates of Epdinium spp.and Entodinium spp.were found in the stomach of five giant panda. Density of ciliates in each stomach of giant pandas were 4.21×10 4 ind./ml, 6.98×10 4 ind./ml, 3.05×10 4 ind./ml, 4.46×10 4 ind./ml and 4.38×10 4 ind./ml respectively. But all the fecal specimens were negative.
基金supported by the National Natural Science Foundation of China(32170470,31720103918 to ZRL,32270446 to DHL)Natural Sciences Foundation of Guangdong Province(2022A1515011874 to DHL)+1 种基金Science and Technology Projects in Guangzhou(202201011831)the Czech Grant Agency 22-01026S to JL.
文摘Currently,new species of freshwater fish trypanosomes,which are economically important parasites,are being described based on subjectively selected features,i.e.,their cell morphology and the host species.We have performed detailed phylogenetic and haplotype diversity analyses of all 18S rRNA genes available for freshwater fish trypanosomes,including the newly obtained sequences of Trypanosoma carassii and Trypanosoma danilewskyi.Based on a sequence similarity of 99.5%,we divide these trypanosomes into 15 operational taxonomic units,and propose three nominal scenarios for distinguishing T.carassii and other aquatic trypanosomes.We find evidences for the existence of a low number of freshwater fish trypanosomes,with T.carassii having the widest geographic and host ranges.Our analyses support the existence of an umbrella complex composed of T.carassii and two sister species.
