A field study of brook stickleback morphology: multiple predators and multiple traits
A field study of brook stickleback morphology: multiple predators and multiple traits
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溪刺鱼形态的实地研究：多种捕食者和多种性状
DOI：
10.1139/z07-003
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发表时间：
2007
影响因子：
1.4
通讯作者：
M. Zimmerman
中科院分区：
文献类型：
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作者：
M. Zimmerman
本研究考察了与两种捕食者群落共存的溪棘鱼（Culaea inconstans (Kirtland, 1840)）所表达的一套形态特征。“小型捕食者”群落只包括缝隙有限的捕食者；“混合捕食者”群落包括缝隙限制和非缝隙限制的捕食者。在三个流域的26个研究点中，小型捕食者群落的刺鱼比混合捕食者群落的刺鱼身体更长，刺更长，中部更深。观察到的差异与假设一致，即小捕食者群落的棘鱼形态更好地适应于躲避缝隙限制的捕食者，而混合捕食者群落的棘鱼形态更好地适应于躲避大型、非缝隙限制的捕食者。1岁棘鱼的形态差异很明显，这可能是由早期的捕食者-猎物相互作用造成的。所涉及的形态性状间的相关性…
This field-based study examined a suite of morphological traits expressed by brook sticklebacks (Culaea inconstans (Kirtland, 1840)) coexisting with two types of predator communities. “Small-predator” communities included gape-limited predators only; “mixed-predator” communities included both gape-limited and non-gape-limited predators. Across 26 study sites in three drainages, sticklebacks in small-predator communities had longer bodies, longer spines, and deeper midbodies than those in mixed-predator communities. The observed differences were consistent with the hypothesis that stickleback morphology in small-predator communities would be better adapted for avoiding gape-limited predators and that in mixed-predator communities should be better adapted for avoiding large, non-gape-limited predators. Morphological differences were apparent in 1-year-old sticklebacks and likely resulted from predator–prey interactions early in the sticklebacks’ life history. Correlation among morphological traits involved ...