Hot spring frogs (Buergeria japonica) prefer cooler water to hot water
Hot spring frogs (Buergeria japonica) prefer cooler water to hot water
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DOI：
10.1002/ece3.6637
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发表时间：
2020-08-11
影响因子：
2.6
通讯作者：
Lau, Quintin
中科院分区：
文献类型：
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作者：
Komaki, Shohei;Sutoh, Yoichi;Lau, Quintin
“温泉蛙”是日本流树蛙（Buergeria japonica）的非正式名称，广泛分布于台湾和日本琉球群岛。已知一些种群栖息在温泉中。然而，温泉源周围的水温可能非常高。因此，值得怀疑的是b。日本选择居住在这样危险的环境中。为了解决这个问题，我们对温泉种群的水温偏好进行了一系列的观察。日本Kuchinoshima:(a)在不同温度的水池中实地观察蝌蚪密度，(b)实地观察成年雄性出现繁殖的水温，以及(c)在室内观察成年雌性选择产卵的水温。结果，蝌蚪在较冷的水中表现出更高的密度。成年雄性避开温度高于37摄氏度的水池，成年雌性则选择温度较低的水池产卵。摄像机记录还显示，成年个体倾向于出现在较冷的水池周围。因此，我们没有发现任何支持温泉蛙更喜欢热水的假设。相反，如果有冷水，它们显然更喜欢喝。温泉源周围的水温超过了该物种的耐热性，这可能是对该种群的强烈选择压力。因此，感知和避免致命温度的能力可能是栖息在温泉中的物种的关键生态和生理特征。
"Hot spring frog" is an informal name used for the Japanese stream tree frog (Buergeria japonica), which is widely distributed in Taiwan and the Ryukyu Archipelago in Japan. Some populations of the species are known to inhabit hot springs. However, water temperature can be extremely high around the sources of hot springs. Thus, it is questionable whetherB. japonicaselectively inhabits such dangerous environments. To address this question, we conducted a series of observations of water temperature preferences of a hot spring population ofB. japonicain Kuchinoshima Island in Japan: (a) a field observation of tadpole density in water pools of different temperatures, (b) a field observation of water temperatures where adult males appear for breeding, and (c) an indoor observation of water temperatures selected by adult females for oviposition. As a result, tadpoles showed a higher density in cooler water. Adult males avoided water pools hotter than 37 degrees C, and adult females selected cooler pools for oviposition. Camera records also showed that adult individuals tend to appear around cooler pools. Thus, we did not find any support for the hypothesis that hot spring frogs prefer hot water. Conversely, they apparently tended to prefer cooler water if it was available. Water temperatures around the sources of the hot spring exceed thermal tolerances of the species and could be a strong selective pressure on the population. Thus, the ability to sense and avoid lethal temperatures may be a key ecological and physiological characteristic for the species that inhabit hot springs.