Levinton Jeffrey S, Monahan Rosemary K
Biol Bull. 1983 Dec;165(3):699-707. doi: 10.2307/1541472.
Individuals of two subspecies of Ophryotrocha puerilis (Polychaeta; Dorvilleidae) were collected from differing thermal regimes, and cultures were maintained for over a year. Despite common rearing, the two subspecies show substantial differences in somatic growth rate. At 15°C, the warm-water subspecies grew more slowly, while at 20°C growth for the two subspecies was not significantly different. At 24°C, the warm-water subspecies grew more rapidly and suffered substantially less mortality than the northern subspecies. These results conform to a model predicting genetic differentiation of metabolic efficiency, leading to differences in growth efficiency among populations adapting to thermally differentiated habitats. The problems faced by the cold-water subspecies at 24°C conforms to expectations based upon natural habitat temperatures.
从不同热环境中采集了双带奥菲颤蚓（多毛纲；多尔维利科）的两个亚种的个体，并进行了一年多的养殖。尽管养殖条件相同，但这两个亚种在体细胞生长速率上表现出显著差异。在15℃时，暖水亚种生长较慢，而在20℃时，两个亚种的生长没有显著差异。在24℃时，暖水亚种生长更快，死亡率也比北方亚种低得多。这些结果符合一个预测代谢效率遗传分化的模型，导致适应热分化栖息地的种群之间生长效率存在差异。冷水亚种在24℃时面临的问题符合基于自然栖息地温度的预期。
