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首页> 外文期刊>Parasitology >Rhabdias pseudosphaerocephala infection in Bufo marinus: lung nematodes reduce viability of metamorph cane toads.
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Rhabdias pseudosphaerocephala infection in Bufo marinus: lung nematodes reduce viability of metamorph cane toads.

机译：蟾蜍假单胞菌的假性球菌感染：肺线虫降低了变态甘蔗蟾蜍的生存能力。

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摘要

Cane toads (Bufo marinus) were introduced to Australia in 1935 and have since spread widely over the continent, generating concern regarding ecological impacts on native predators. Most Australian cane toad populations are infected with lung nematodes Rhabdias pseudosphaerocephala, a parasite endemic to New World (native-range) cane toad populations; presumably introduced to Australia with its toad host. Considering the high intensities and prevalence reached by this parasite in Australian toad populations, and public ardour for developing a control plan for the invasive host species, the lack of experimental studies on this host-parasite system is surprising. To investigate the extent to which this lungworm influences cane toad viability, we experimentally infected metamorph toads (the smallest and presumably most vulnerable terrestrial phase of the anuran life cycle) with the helminth. Infected toads exhibited reduced survival and growth rates, impaired locomotor performance (both speed and endurance), and reduced prey intake. In summary, R. pseudosphaerocephala can substantially reduce the viability of metamorph cane toads.
机译：甘蔗蟾蜍（Bufo marinus）于1935年引入澳大利亚，此后在整个非洲大陆广泛传播，引起了人们对本地捕食者的生态影响的关注。大多数澳大利亚甘蔗蟾蜍种群都感染了肺线虫Rhabdias pseudosphaerocephala，这是新世界（本地范围）甘蔗蟾蜍种群的一种寄生虫;大概是与它的蟾蜍宿主一起传入澳大利亚的。考虑到该寄生虫在澳大利亚蟾蜍种群中达到的高强度和盛行率，以及为制定侵入性宿主物种控制计划的公众热情，缺乏对该宿主-寄生虫系统进行实验研究的不足。为了调查这种肺虫在多大程度上影响甘蔗蟾蜍的生存能力，我们通过蠕虫实验性地感染了变态蟾蜍（最小且可能是最脆弱的陆地阶段）。被感染的蟾蜍表现出降低的存活率和生长速率，运动能力受损（速度和耐力）以及猎物摄入减少。综上所述，拟球菌可大大降低变态甘蔗蟾蜍的生存能力。

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