Potential dispersal of aquatic snails by waterbird endozoochory in neotropical wetlands

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

Biota Neotropica Pub Date : 2022-01-01 DOI:10.1590/1676-0611-bn-2021-1239

Luiz C. Barboza, Giliandro G. Silva, A. Green, L. Maltchik, C. Stenert

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引用次数: 1

Abstract

Abstract Waterbird-mediated zoochory is one of the main ecological mechanisms by which non-flying freshwater invertebrates can disperse between isolated wetlands. Passive dispersal through gut passage inside waterbirds (endozoochory) may explain how many organisms spread in the landscape. Here, we evaluate the potential for dispersal of aquatic snails by three waterbird species in neotropical wetlands. A total of 77 faecal samples from Coscoroba coscoroba (n = 28), Dendrocygna viduata (n = 36) and Anas flavirostris (n = 13) were collected in the field and taken to the laboratory. There, the samples were examined under a stereomicroscope to check for the presence of gastropod shells. We found 496 intact gastropod shells, and Heleobia piscium was the most abundant species (n= 485). We also found two shells of Drepanotrema sp. and nine others distributed between two different morphotypes of Planorbidae. Snails were present in 20.8 % of all samples, and were more frequent in faeces of coscoroba swan (50%) than the other two bird species. Our data suggest that aquatic snails may disperse by avian endozoochory between neotropical wetlands, with vectors including migratory bird species.

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新热带湿地水鸟内窥镜对水生蜗牛的潜在扩散作用

水鸟介导的动物传播是淡水无脊椎动物在孤立湿地间传播的主要生态机制之一。通过水鸟(内胆)肠道的被动传播可以解释有多少生物在景观中传播。在此，我们评估了三种水鸟在新热带湿地中对水生蜗牛的扩散潜力。野外采集Coscoroba Coscoroba (n = 28)、Dendrocygna viduata (n = 36)和Anas flavrostris (n = 13)共77份粪便标本，送往实验室。在那里，这些样本在立体显微镜下进行了检查，以检查腹足类动物壳的存在。共发现完整腹足类贝壳496个，其中鱼鳞Heleobia piscium种类最多(n= 485)。我们还发现了2个Drepanotrema sp.和9个其他贝壳分布在两个不同形态的Planorbidae之间。钉螺在20.8%的样本中存在，在大天鹅粪便中(50%)比其他两种鸟类更常见。研究结果表明，水生蜗牛可能通过鸟类的内毒素在新热带湿地间传播，其传播媒介包括候鸟。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Biota Neotropica BIODIVERSITY CONSERVATION-

CiteScore

2.90

自引率

16.70%

发文量

审稿时长

4-8 weeks

期刊介绍： BIOTA NEOTROPICA is an electronic, peer-reviewed journal edited by the Program BIOTA/FAPESP: The Virtual Institute of Biodiversity. This journal"s aim is to disseminate the results of original research work, associated or not to the program, concerned with characterization, conservation and sustainable use of biodiversity within the Neotropical region. Manuscripts are considered on the understanding that their content has not appeared, or will not be submitted, elsewhere in substantially the same form, because once published their copyrights are transferred to BIOTA NEOTROPICA as established in the Copyright Transfer Agreement signed by the author(s).