Personality trait differences between mainland and island populations in the common frog (Rana temporaria)

被引:76
作者
Brodin, Tomas [1 ]
Lind, Martin I. [1 ,2 ]
Wiberg, Miria Kaltiala [1 ]
Johansson, Frank [1 ,3 ]
机构
[1] Umea Univ, Dept Ecol & Environm Sci, SE-90187 Umea, Sweden
[2] Univ Sheffield, Dept Anim & Plant Sci, Sheffield S10 2TN, S Yorkshire, England
[3] Uppsala Univ, Evolutionary Biol Ctr, Dept Ecol & Genet, S-75236 Uppsala, Sweden
基金
瑞典研究理事会;
关键词
Range expansion; Animal personality; Colonization; Dispersal; Boldness; CONSISTENT INDIVIDUAL-DIFFERENCES; LIFE-HISTORY TRAITS; PHENOTYPIC PLASTICITY; BEHAVIORAL SYNDROMES; DEPENDENT DISPERSAL; NATAL DISPERSAL; G-MATRIX; BOLDNESS; PREDATION; SELECTION;
D O I
10.1007/s00265-012-1433-1
中图分类号
B84 [心理学]; C [社会科学总论]; Q98 [人类学];
学科分类号
03 ; 0303 ; 030303 ; 04 ; 0402 ;
摘要
Understanding and predicting species range expansions is an important challenge in modern ecology because of rapidly changing environments. Recent studies have revealed that consistent within-species variation in behavior (i.e., animal personality) can be imperative for dispersal success, a key process in range expansion. Here we investigate how habitat isolation can mediate differentiation of personality traits between recently founded island populations and the main population. We performed laboratory studies of boldness and exploration across life stages (tadpoles and froglets) using four isolated island populations and four mainland populations of the common frog (Rana temporaria). Both tadpoles and froglets from isolated populations were bolder and more exploratory than conspecifics from the mainland. Although the pattern can be influenced by possible differences in predation pressure, we suggest that this behavioral differentiation might be the result of a disperser-dependent founder effect brought on by an isolation-driven environmental filtering of animal personalities. These findings can have important implications for both species persistence in the face of climate change (i.e., range expansions) and ecological invasions as well as for explaining rapid speciation in isolated patches.
引用
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页码:135 / 143
页数:9
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