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在北美西部,三刺鱼的光周期反应的纬度变化。

Latitudinal variation in photoperiodic response of the three-spined stickleback Gasterosteus aculeatus in western North America.

机构信息

Center for Ecology and Evolutionary Biology, University of Oregon, Eugene, OR 97403-5289, USA.

出版信息

J Fish Biol. 2009 Nov;75(8):2075-81. doi: 10.1111/j.1095-8649.2009.02418.x.

Abstract

Reproductive maturation in both male and female three-spined stickleback Gasterosteus aculeatus was strongly photoperiodic in a northern population (Alaska, 61 degrees N) but not in a southern population (Oregon, 43 degrees N) from western North America. Increasing reliance on photoperiod with increasing latitude is a general phenomenon among vertebrates, and is probably due to the anticipation of a narrower window of opportunity for reproduction and development at higher latitudes.

摘要

在北美洲西部,北方种群(阿拉斯加,北纬 61 度)的三刺鱼雌雄两性的生殖成熟强烈地受光周期的影响,但南方种群(俄勒冈,北纬 43 度)却不受影响。随着纬度的增加而越来越依赖于光周期,这是脊椎动物的普遍现象,可能是因为在高纬度地区,繁殖和发育的机会窗口更窄。

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