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原文連結
論文資訊
- 類型：已發表論文
- 日期：2013
摘要
The 演化 and distribution of 物種 body sizes for terrestrial mammals is well-explained by a macro演化ary tradeoff between short-term selective advantages and long-term extinction risks from increased 物種 body size, unfolding above the 2 g minimum size induced by thermoregulation in air. Here, we consider whether this same tradeoff, formalized as a constrained convection-reaction-擴散 system, can also explain the sizes of fully aquatic mammals, which have not previously been considered. By replacing the terrestrial minimum with a pelagic one, at roughly 7000 g, the terrestrial mammal tradeoff model accurately predicts, with no tunable parameters, the observed body masses of all extant cetacean 物種, including the 175,000,000 g Blue Whale. This strong agreement between theory and data suggests that a u
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