Why are organisms usually bigger in colder environments? Making sense of a life history puzzle
Why are organisms usually bigger in colder environments? Making sense of a life history puzzle
复制标题
DOI：
10.1016/s0169-5347(97)01058-6
复制
发表时间：
1997-06-01
影响因子：
16.8
通讯作者：
Sibly, RM
中科院分区：
文献类型：
--
作者：
Atkinson, D;Sibly, RM
环境对体型的影响具有广泛的生态和经济重要性，但我们对这些影响的理解却被一个明显的悖论所掩盖。生活史分析表明，如果在减缓幼体生长的条件下饲养，成年动物的体型会变小，这是适应性的。然而，如果生长受到食物供应的限制，成虫就会变小，而如果生长受到温度的限制，通常会观察到相反的情况。这个明显的悖论的解决办法可能是，成虫的体型对温度的反应是适应性的，但受到一种权衡的限制，这种权衡可以用冯·贝尔塔朗菲的经典生长理论来理解。或者，这种反应可能是电池大小和温度之间的基本关系不可避免的结果。
Environmental effects on body size are of widespread ecological and economic importance but our understanding of these effects has been obscured by an apparent paradox. Life history analysis suggests that it is adaptive for adults to emerge smaller if reared in conditions that slow down juvenile growth. However, whereas smaller adults emerge if growth is limited by food availability, the reverse is usually observed if growth is limited by temperature. The resolution of this apparent paradox may be that the response of adult size to temperature is adaptive, but is constrained by a trade-off that can be understood in terms of von Bertalanffy's classic theory of growth. Alternatively, the response may be the unavoidable consequence of a fundamental relationship between cell size and temperature.