Spatial distribution of two invasive freshwater snails and environmental correlates of the mollusc community abundance, a case study in Chile

IF 1 4区环境科学与生态学 Q3 BIODIVERSITY CONSERVATION

Animal Biodiversity and Conservation Pub Date : 2023-10-05 DOI:10.32800/abc.2023.46.0187

G. A. Collado, M. A. Vidal, C. Torres-Díaz

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引用次数: 0

Abstract

Invasive species can produce negative effects on native species. We studied the densities of Physa acuta and Potamopyrgus antipodarum, two invasive freshwater snails in Chile, and analyzed the relationship between environmental parameters and the relative abundances of the mollusc community in several ecosystems. Densities of both species were studied in three habitat types (stones, smooth sediment, and vegetation) in the Consuelo Stream, Coquimbo Region. Densities of Potamopyrgus antipodarum were significantly higher on stones, while Physa acuta showed no significant differences between habitats. A canonical correspondence analysis (CCA) demonstrated that both Physa acuta and Potamopyrgus antipodarum were related to oxidation-reduction potential but not to salinity. The results also showed that native mollusc fauna is sparsely represented in the study area, possibly due to the presence of these invaders, although drought, water pollution, and other unstudied anthropogenic factors may also be involved.

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两种入侵淡水蜗牛的空间分布与软体动物群落丰度的环境相关性——以智利为例

入侵物种会对本地物种产生负面影响。研究了智利两种入侵淡水钉螺(Physa acuta)和Potamopyrgus antipodarum)的密度，并分析了不同生态系统中环境参数与软体动物群落相对丰度的关系。在科金博地区Consuelo溪流三种生境类型(石头、光滑沉积物和植被)中研究了这两种物种的密度。在不同生境中，尖裂Physa在石头上的密度差异不显著。典型对应分析(CCA)表明，尖Physa acuta和Potamopyrgus antipodarum都与氧化还原电位有关，而与盐度无关。结果还表明，研究区本土软体动物的分布较少，这可能是由于这些外来入侵动物的存在，尽管干旱、水污染和其他未研究的人为因素也可能涉及其中。

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来源期刊

Animal Biodiversity and Conservation 农林科学-动物学

CiteScore

2.00

自引率

0.00%

发文量

审稿时长

>12 weeks

期刊介绍： Animal Biodiversity and Conservation (antes Miscel·lània Zoològica) es una revista interdisciplinar, publicada desde 1958 por el Museu de Ciències Naturals de Barcelona. Incluye artículos de investigación empírica y teórica en todas las áreas de la zoología (sistemática, taxonomía, morfología, biogeografía, ecología, etología, fisiología y genética) procedentes de todas las regiones del mundo. La revista presta especial interés a los estudios que planteen un problema nuevo o introduzcan un tema nuevo, con hipòtesis y prediccions claras, y a los trabajos que de una manera u otra tengan relevancia en la biología de la conservación. No se publicaran artículos puramente descriptivos, o artículos faunísticos o corológicos en los que se describa la distribución en el espacio o en el tiempo de los organismes zoológicos.