RESPIRATORY PHYSIOLOGY OF DIVING IN THE SEA TURTLE
RESPIRATORY PHYSIOLOGY OF DIVING IN THE SEA TURTLE
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DOI：
10.2307/1444761
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发表时间：
1985-01-01
期刊：
影响因子：
2.6
通讯作者：
BENTLEY, TB
中科院分区：
文献类型：
--
作者：
LUTZ, PL;BENTLEY, TB
海龟习惯于在水下活动，只短暂地浮出水面呼吸。在红海龟（Caretta caretta）中，水呼吸可以忽略不计，占静止O2消耗量的< 2%。与大多数海洋哺乳动物不同，它们没有特别的适应能力来增加血液或组织中的O2容量。肺的功能是主要的氧气储存，它可以为大多数常规潜水（长达20分钟）提供足够的氧气。海龟血液的呼吸特性特别适合于常规屏气期间的肺组织运输。海龟通过具有高无氧能力在至少3小时的长时间潜水中存活。血气和pH值水平的实质性变化是持久的，并表明大脑能量代谢的特殊适应。
The sea turtle is habitually submarine, surfacing only briefly to breathe. Aquatic respiration is negligible in the loggerhead (Caretta caretta), accounting for < 2% of the resting O2 consumption. Unlike most marine mammals there are no special adaptations for increased O2 capacity in blood or tissue. The lung functions as the major O2 store and it can supply sufficient O2 for most routine dives (up to 20 min) to be aerobic. The respiratory properties of sea turtle blood are particularly well suited to lung-tissue transport during routine breathhold periods. Sea turtles survive prolonged dives of at least 3 h by having a high anaerobic capacity. Substantial changes in blood gas and pH levels are endured and special adaptations in brain energy metabolism are indicated.