夏蟄
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又稱(chēng)夏眠.動(dòng)物休眠的一種.動(dòng)物對(duì)炎熱季節(jié)的一種適應(yīng)現(xiàn)象.變溫動(dòng)物對(duì)于炎熱的氣溫和干燥環(huán)境有明顯的適應(yīng)方式，即體溫下降，陷入沉睡狀態(tài)，如南美肺魚(yú)（Lepidosirenparadoxa）當(dāng)水池干涸時(shí)，鉆入淤泥之中，由鰓呼吸轉(zhuǎn)變?yōu)橐?a href="/w/%E9%B3%94" title="鰾">鰾呼吸空氣，代謝降低，行動(dòng)遲緩，陷入麻木狀態(tài).當(dāng)旱期過(guò)后，即恢復(fù)其活力，進(jìn)行生殖，若整年雨水充沛，南美肺魚(yú)則不進(jìn)入休眠狀態(tài).又如夏眠時(shí)的劍螈（Ensatina）將其放在濕土上，幾小時(shí)后，皮膚吸水，體重大大增加，即夏眠出蟄.所以干旱和高溫是夏眠的主要誘因.其他如非洲肺魚(yú)、沙蜥、草原龜均有夏眠.除變溫動(dòng)物外，異溫動(dòng)物有的也有夏眠，如黃鼠（Citelus）。GOOGLE英文翻譯:Also known as estivation. Animals, a kind of hibernation. Animals to the hot season, an adaptation phenomenon. Cold-blooded animal for the hot temperatures and dry environment, a clear adaptation methods, namely, the temperature drops, into a sleeping state, such as the South American lungfish (Lepidosirenparadoxa) When the pond dried up, the drill into the mud among the transition from gill respiration to swim bladder breathing, metabolism, reduce and slow, into a numb state. When the drought period, that is to restore its vitality, reproductive, if the whole year is plenty of rain South American lungfish are not into hibernation. Another example is when the sword aestivation salamander (Ensatina) put it in wet soil, on a few hours later, skin absorption, body weight increased significantly, ie aestivation out of hibernation. Therefore, drought and high temperatures are aestivation of the the major factor. Others such as the African lungfish, sand lizards, turtles are aestivation grassland. In addition to cold-blooded animal, the different temperature and some animals also have aestivation, such as the ground squirrel (Citelus).
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