Helminth parasitism in two closely related South African rodents: abundance, prevalence, species richness and impinging factors
Helminth parasitism in two closely related South African rodents: abundance, prevalence, species richness and impinging factors
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两种密切相关的南非啮齿动物的蠕虫寄生：丰度、患病率、物种丰富度和影响因素
DOI：
10.1007/s00436-017-5419-9
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发表时间：
2017
影响因子：
2
通讯作者：
S. Matthee
中科院分区：
文献类型：
--
作者：
A. Spickett;K. Junker;B. Krasnov;V. Haukisalmi;S. Matthee
我们调查了两种密切相关的啮齿动物（主要发生在干旱生境的群居小杆鼠和独居小杆鼠）的蠕虫感染模式。dilectusoccurring主要在中型栖息地）在20个地点在不同的生物群落的南非，并询问物种之间的差异是否主要是由社会性的差异或不同的环境条件，其各自的栖息地。从胃肠道中检出线虫11种，绦虫5种。pumilio和19种线虫和7种绦虫。懒惰。在这两种宿主中，线虫的平均丰度和流行率均高于绦虫。绦虫感染以及线虫的丰度，物种丰富度或患病率没有两种啮齿动物之间的差异。然而，线虫感染的发病率显着高于R。在R. pumilio。此外，线虫的数量和物种丰富度的地下R。pumilioinhabiting相对更多的干旱卡鲁生物群落显着低于那些居住在相对较少的干旱Fynbos生物群落。虽然我们不能明确区分宿主社会性和环境因素对两种宿主中蠕虫个体和种类的影响，但R.普米利奥河dilectusas之间的差异以及线虫个体和物种之间的差异。Fynbos和Karoo的pumilio表明，环境条件对蠕虫感染的影响比社会性更重要。
We investigated patterns of helminth infection in two closely related rodents (socialRhabdomys pumiliooccurring mainly in xeric habitats and solitaryR. dilectusoccurring mainly in mesic habitats) at 20 localities in different biomes of South Africa and asked if between-species differences were mainly caused by difference in sociality or difference in environmental conditions of their respective habitats. Helminths recovered from the gastrointestinal tract totalled 11 nematode and 5 cestode species fromR. pumilioand 19 nematode and 7 cestode species fromR. dilectus. In both hosts, mean abundance and prevalence of nematodes were higher compared to cestodes. Cestode infection as well as nematode abundance, species richness or prevalence did not differ between the two rodents. However, incidence of nematode infection was significantly higher inR. dilectusthan inR. pumilio. Moreover, nematode numbers and species richness in infracommunities ofR. pumilioinhabiting the relatively more xeric Karoo biome were significantly lower than in those inhabiting the relatively less xeric Fynbos biome. Although we could not unequivocally distinguish between effects of host sociality and environmental factors on the number of individuals and species of helminths in the two hosts, differences in the incidence of nematode infection betweenR. pumilioandR. dilectusas well as differences in the number of nematode individuals and species betweenR. pumiliofrom the Fynbos and the Karoo suggested the effect of environmental conditions on helminth infection to be more important than that of sociality.