Food preference for native and invasive prey in the naive lancehead pitviper

IF 1.8 3区环境科学与生态学 Q3 ECOLOGY

Biotropica Pub Date : 2024-03-27 DOI:10.1111/btp.13321

João Miguel Alves-Nunes, Adriano Fellone, Otavio A. V. Marques

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Abstract

The presence of invasive species in the environment can be highly detrimental. The success of these species depends on their interaction with native ones. The prey–predator relationship between invasive and native species can result in biodiversity loss or the introduction of new food items for local predators. Due to its tropical and extensive nature, Brazil is vulnerable to the colonization of invasive species. Snakes are a group of animals that can act as both predators and prey for invasive species. The pitviper Bothrops jararaca is an abundant and widely distributed native species on the Brazilian coast. Based on this, we conducted a study on the feeding preferences of naive B. jararaca juveniles regarding invasive and native prey. We found that this species exhibits a greater preference for native anurans compared to Rana catesbeiana, an invasive amphibian associated with significant environmental impacts. Additionally, the gecko Hemidactylus mabouia, a prey that triggered intense predatory responses from the pitviper, reveals that this species, even with a short period of coexistence with B. jararaca, has established an intense prey–predator relationship. The negative correlation between prey size and feeding interest, guided solely by olfactory cues, adds a layer of complexity to understanding the feeding choices of B. jararaca, providing valuable insights for conservation and environmental management strategies.

Abstract in Portuguese is available with online material.

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天真杓鹬对本地和外来猎物的食物偏好

入侵物种在环境中的存在可能会造成严重危害。这些物种的成功取决于它们与本地物种的相互作用。入侵物种与本地物种之间的捕食关系会导致生物多样性丧失，或为本地捕食者引入新的食物。巴西地处热带，幅员辽阔，因此很容易受到入侵物种殖民的影响。蛇是一类既可以作为入侵物种的天敌也可以作为其猎物的动物。蝮蛇（Bothrops jararaca）是巴西沿海地区一种丰富且分布广泛的本地物种。在此基础上，我们对天真蝮蛇幼体对入侵猎物和本地猎物的取食偏好进行了研究。我们发现，与对环境有重大影响的入侵两栖动物 Rana catesbeiana 相比，该物种对本地无尾类动物表现出更大的偏好。此外，壁虎 Hemidactylus mabouia 这种猎物引发了蝮蛇强烈的捕食反应，这表明该物种即使在与 B. jararaca 共存很短的时间内，也建立起了强烈的猎食关系。猎物大小与捕食兴趣之间的负相关关系（仅由嗅觉线索引导）为了解鹞鸦雀的捕食选择增添了一层复杂性，为保护和环境管理策略提供了宝贵的见解。

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来源期刊

Biotropica 环境科学-生态学

CiteScore

4.10

自引率

9.50%

发文量

122

审稿时长

8-16 weeks

期刊介绍： Ranked by the ISI index, Biotropica is a highly regarded source of original research on the ecology, conservation and management of all tropical ecosystems, and on the evolution, behavior, and population biology of tropical organisms. Published on behalf of the Association of Tropical Biology and Conservation, the journal''s Special Issues and Special Sections quickly become indispensable references for researchers in the field. Biotropica publishes timely Papers, Reviews, Commentaries, and Insights. Commentaries generate thought-provoking ideas that frequently initiate fruitful debate and discussion, while Reviews provide authoritative and analytical overviews of topics of current conservation or ecological importance. The newly instituted category Insights replaces Short Communications.