Blouin Michael S
Department of Biology, Florida State University, 32306-2043, Tallahassee, FL, USA.
Oecologia. 1992 May;90(2):288-293. doi: 10.1007/BF00317188.
Univariate and bivariate methods for comparing norms of reaction among species are discussed and illustrated with an example using North American hylid treefrogs. Norms of reaction for size at metamorphosis (SM) and length of larval period (LP) were compared among treefrog species raised at different food levels (Hyla cinerea vs H. gratiosa) and at different temperatures (H. cinerea vs H. gratiosa vs H. squirella). Hyla cinerea and Hyla gratiosa show parallel norms of reaction across food levels and temperatures. Across temperatures, H. squirella shows a much smaller change in SM relative to change in LP than do H. cinerea and H. gratiosa. This difference in shape of reaction norms may reflect different histories of selection resulting from these species' use of different larval habitats.
本文讨论了用于比较物种反应规范的单变量和双变量方法，并以北美雨蛙为例进行了说明。比较了在不同食物水平（灰树蛙与华丽树蛙）和不同温度（灰树蛙与华丽树蛙与松鼠雨蛙）下饲养的树蛙物种变态时的大小（SM）和幼虫期长度（LP）的反应规范。灰树蛙和华丽树蛙在食物水平和温度上表现出平行的反应规范。在不同温度下，松鼠雨蛙相对于LP的变化，SM的变化比灰树蛙和华丽树蛙小得多。反应规范形状的这种差异可能反映了这些物种使用不同幼虫栖息地所导致的不同选择历史。
