Programa de Pós-Graduação em Ecologia e Conservação, Universidade Federal do Mato Grosso do Sul, Campo Grande, Av. Costa e Silva, Mato Grosso do Sul 79070-900, Brazil.
Parasitol Res. 2010 Feb;106(3):747-51. doi: 10.1007/s00436-009-1718-0. Epub 2010 Jan 22.
The importance of understanding the role of parasites in ecosystems and the structure of parasite communities was addressed by studying the helminth component community of the paradox frog Pseudis platensis. Thirty-two specimens of P. platensis were collected in the south-eastern Pantanal, State of Mato Grosso do Sul, Brazil, in March 2006 and April 2008, then surveyed for helminth parasites. The component community was composed of eight species: the trematodes Catadiscus propinquus, Catadiscus sp., Glypthelmins palmipedis, two metacercariae of undetermined species, the nematodes Cosmocerca podicipinus and Rhabdias sp., and an encysted larva. Catadiscus sp. dominated in the community with high prevalence (85.4%) and Berger Parker Index (0.75). Glypthelmins palmipedis was the second most prevalent and abundant species, while C. podicipinus and Rhabdias sp. were each found in only one host specimen. The high abundance of digeneans may be explained by the aquatic lifestyle of P. platensis. The helminth species found in this study were reported to infect other host species, corroborating the hypothesis that amphibian parasite communities are composed of generalist species. Pseudis platensis is a new host record for C. propinquus, C. podicipinus, and Rhabdias sp.
研究奇异多指蟾 Pseudis platensis 的寄生虫成分群落，探讨了理解寄生虫在生态系统和寄生虫群落结构中的作用的重要性。2006 年 3 月和 2008 年 4 月，在巴西南马托格罗索州东南部的潘塔纳尔地区采集了 32 只 P. platensis 标本，并对其寄生虫进行了调查。该成分群落由 8 种组成：吸虫 Catadiscus propinquus、Catadiscus sp.、Glypthelmins palmipedis、两种未确定种的后尾蚴、线虫 Cosmocerca podicipinus 和 Rhabdias sp.，以及一个囊尾蚴幼虫。Catadiscus sp.在群落中占主导地位，其流行率（85.4%）和 Berger Parker 指数（0.75）均较高。Glypthelmins palmipedis 是第二大常见和丰富的物种，而 C. podicipinus 和 Rhabdias sp. 则分别在一个宿主标本中发现。双吸虫的高丰度可能是由于 P. platensis 的水生生活方式所致。本研究中发现的寄生虫物种被报道感染其他宿主物种，这证实了两栖动物寄生虫群落由一般物种组成的假说。奇异多指蟾是 C. propinquus、C. podicipinus 和 Rhabdias sp. 的新宿主记录。
