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Phenotypic Selection Exerted by a Seed Predator Is Replicated in Space and Time and among Prey Species
Benkman, Craig W.; Mezquida, Eduardo T.
2015
Source PublicationAMERICAN NATURALIST
ISSN0003-0147
Volume186Issue:5Pages:682-691
AbstractAlthough consistent phenotypic selection arising from biotic interactions is thought to be the primary cause of adaptive diversification, studies documenting such selection are relatively few. Here we analyze 12 episodes of phenotypic selection exerted by a predispersal seed predator, the red crossbill (Loxia curvirostra complex), on five species of pines (Pinus). We find that even though the intensity of selection for some traits increased with the strength of the interaction (i.e., proportion of seeds eaten), the relative strength of selection exerted by crossbills on cone and seed traits is replicated across space and time and among species. Such selection (1) can account for repeated patterns of conifer cone evolution and escalation in seed defenses with time and (2) suggests that variation in selection is less the result of variation intrinsic to pairwise biotic interactions than, for example, variation in relative densities of the interacting species, community context, and abiotic factors.
KeywordBiotic Interaction Strength Directional Selection Pollination Syndromes Lodgepole Pine Diversifying Coevolution Fluctuating Selection Disruptive Selection Geographic-variation Natural-populations Adaptive Radiation
Indexed BySCI
Language英语
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/9802
Collection文献共享
Recommended Citation
GB/T 7714
Benkman, Craig W.,Mezquida, Eduardo T.. Phenotypic Selection Exerted by a Seed Predator Is Replicated in Space and Time and among Prey Species[J]. AMERICAN NATURALIST,2015,186(5):682-691.
APA Benkman, Craig W.,&Mezquida, Eduardo T..(2015).Phenotypic Selection Exerted by a Seed Predator Is Replicated in Space and Time and among Prey Species.AMERICAN NATURALIST,186(5),682-691.
MLA Benkman, Craig W.,et al."Phenotypic Selection Exerted by a Seed Predator Is Replicated in Space and Time and among Prey Species".AMERICAN NATURALIST 186.5(2015):682-691.
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