Differential effect of dehydration on the voluntary activity of a diurnal toad

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2023-08-01 DOI:10.1016/j.zool.2023.126105

María Soledad Gastón, Mauricio Sebastián Akmentins

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引用次数: 0

Abstract

Anuran amphibians' ability to maintain their activity at high temperatures or low humidity depends on their capacity to face dehydration, especially when they display diurnal and terrestrial life habits. Melanophryniscus rubriventris is a diurnal and terrestrial toad from humid Yungas Andean forests that breeds in temporary ponds. It is exposed to the recurrent risk of dehydration because of pond desiccations during the breeding season. Here, we study how M. rubriventris males behaviorally respond to dehydration by measuring their voluntary activity under an ex-situ experiment. Toads with different hydration levels were exposed to a circular track for voluntary activity measurements. Dehydrated males of M. rubriventris toads did not adopt a water-conserving posture staying active during the test and increasing walking under severe dehydration. Certain tolerance to dehydration would allow performing daily activities under challenging diurnal conditions. The increased walking under severe dehydration suggests water or shelter-seeking behavior that would be crucial for diurnal and terrestrial toads to overcome the unpredictable hydric environment during the breeding season.

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脱水对昼行蟾蜍自愿活动的不同影响

Anuran两栖动物在高温或低湿度下保持活动的能力取决于它们面对脱水的能力，尤其是当它们表现出昼夜和陆地生活习惯时。红腹黑腹蟾蜍是一种昼夜活动的陆生蟾蜍，产于潮湿的云加斯安第斯森林，在临时池塘中繁殖。由于繁殖季节池塘干涸，它面临着反复出现的脱水风险。在这里，我们通过在一项非原位实验中测量雄性红腹蛛的自愿活动来研究它们对脱水的行为反应。将具有不同水合水平的蟾蜍暴露在圆形轨道下进行自愿活动测量。红腹蟾蜍的脱水雄性蟾蜍没有采取节水姿势，在测试期间保持活跃，并在严重脱水的情况下增加行走。对脱水有一定的耐受性，可以在具有挑战性的日间条件下进行日常活动。在严重脱水的情况下，行走次数的增加表明，寻找水源或住所的行为对昼夜蟾蜍和陆生蟾蜍在繁殖季节克服不可预测的水环境至关重要。

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

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.