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首页> 外文期刊>Parasitology >Testing temporal stability of the larval digenean community in Heleobia conexa (Mollusca: Cochliopidae) and its possible use as an indicator of environmental fluctuations.
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Testing temporal stability of the larval digenean community in Heleobia conexa (Mollusca: Cochliopidae) and its possible use as an indicator of environmental fluctuations.

机译：测试Heleobia conexa（软体动物：Cochliopidae）中幼虫双基因群落的时间稳定性，并将其用作环境波动的指标。

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摘要

Larval digeneans have been proposed as indicators of abundance and diversity of vertebrate and other hosts as well as environmental disturbances. To evaluate its response to environmental changes and its potential use as an indicator of environmental fluctuations, the temporal stability of the community of larval digeneans in Heleobia conexa was comparatively analysed in 4 separate years (1996, 1999, 2004 and 2005) in Mar Chiquita coastal lagoon (Buenos Aires province, Argentina). In total, 4579 specimens of H. conexa were collected and 22 digenean species were observed. Overall prevalence presented inter-annual and seasonal differences. These differences correlate with seasonal changes in composition of the vertebrate definitive host community and with the elimination of the preferred habitat of H. conexa in 1999. In general, the larval digenean community of H. conexa showed a yearly re-establishment following the annual cycle of H. conexa and the presence of definitive hosts. This annual restructuring allowed inferences about the effects of short-term environmental changes in the lagoon. According to these observations, the larval digenean community of H. conexa could be considered as a good bio-indicator with quick response to environmental disturbances.
机译：幼虫双基因被提出作为脊椎动物和其他宿主的丰度和多样性以及环境干扰的指标。为了评估其对环境变化的响应及其作为环境波动指标的潜在用途，我们分别在Mar Chiquita沿海的4个不同年份（1996年，1999年，2004年和2005年）对Heleobia conexa幼虫双基因群落的时间稳定性进行了比较分析。泻湖（阿根廷布宜诺斯艾利斯省）。总共收集了4579个H. conexa标本，观察到22种双属植物。总体患病率呈现年际和季节差异。这些差异与脊椎动物最终宿主群落组成的季节性变化以及1999年H. conexa的首选栖息地的消失有关。总的来说，H。conexa的幼虫双基因群落在每年的周期之后显示出每年的重建。 H. conexa和确定的宿主的存在。这项年度结构调整可以推断出泻湖中短期环境变化的影响。根据这些观察结果，可以将H. conexa的幼虫双基因群落视为对环境干扰具有快速反应的良好生物指标。

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