当前位置: X-MOL 学术J. Comp. Physiol. B › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Gut reaction! Neotropical nectar-feeding bats responses to direct and indirect costs of extreme environmental temperatures
Journal of Comparative Physiology B ( IF 2 ) Pub Date : 2020-06-29 , DOI: 10.1007/s00360-020-01288-z
Stephanie Ortega-García 1 , Daniel Ferreyra-García 1 , Jorge E Schondube 1
Affiliation  

One of the consequences of anthropogenic climate change is an increase in the frequency and intensity of extreme weather events. These events have caused mass mortality of different species of wildlife, including bats. In this study, we exposed two species of neotropical nectar-feeding bats that live in contrasting environmental conditions ( A. geoffroyi and L. yerbabuenae ) to extreme high and low temperatures while offering them diets with different energy content. This experimental approach allowed us to determine their thermal and behavioral responses, and to identify environmental conditions that impose high physiologic costs to these species. To determine how bats' responded, we monitored both changes in their body masses and skin temperatures. Both bat species responded differently, with L. yerbabuenae spending more time in normothermia at high temperatures than A. geoffroyi . While both species presented torpor, they used it differently. Torpor allowed A. geoffroyi to maintain and increase body mass at intermediate and low ambient temperatures. At the same time, L. yerbabuenae used torpor only when facing cold ambient temperatures and low-quality food. Understanding the mechanisms that allow species to face changes in their environment is essential given the current climate trends and the fact that the loss of these species could have significant negative consequences in tropical and subtropical ecosystems.

中文翻译:

肠道反应!新热带以花蜜为食的蝙蝠对极端环境温度的直接和间接成本的反应

人为气候变化的后果之一是极端天气事件的频率和强度增加。这些事件导致包括蝙蝠在内的不同种类的野生动物大量死亡。在这项研究中,我们将两种生活在不同环境条件下的新热带花蜜蝙蝠(A. geoffroyi 和 L. yerbabuenae)暴露在极端高温和低温环境中,同时为它们提供不同能量含量的饮食。这种实验方法使我们能够确定它们的热和行为反应,并确定对这些物种造成高生理成本的环境条件。为了确定蝙蝠的反应,我们监测了它们的体重和皮肤温度的变化。两种蝙蝠的反应不同,L. yerbabuenae 在高温下的常温中花费的时间比 A. geoffroyi 更多。虽然这两个物种都表现出麻木,但他们使用它的方式不同。Torpor 允许 A. geoffroyi 在中等和低环境温度下保持和增加体重。同时,耶巴布那乳杆菌只在面对寒冷的环境温度和劣质食物时才会使用麻木。鉴于当前的气候趋势以及这些物种的丧失可能对热带和亚热带生态系统产生重大负面影响的事实,了解使物种面临环境变化的机制至关重要。L. yerbabuenae 仅在面对寒冷的环境温度和劣质食物时才会使用麻木。鉴于当前的气候趋势以及这些物种的丧失可能对热带和亚热带生态系统产生重大负面影响的事实,了解使物种面临环境变化的机制至关重要。L. yerbabuenae 仅在面对寒冷的环境温度和劣质食物时才会使用麻木。鉴于当前的气候趋势以及这些物种的丧失可能对热带和亚热带生态系统产生重大负面影响的事实,了解使物种面临环境变化的机制至关重要。
更新日期:2020-06-29
down
wechat
bug