首页|Empirical studies of escape behavior find mixed support for the race for life model

Empirical studies of escape behavior find mixed support for the race for life model

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Escape theory has been exceptionally successful in conceptualizing and accurately predicting effects of numerous factors that affect predation risk and explaining variation in flight initiation distance(FID;predator-prey distance when escape begins).Less explored is the relative orientation of an approaching predator,prey,and its eventual refuge.The relationship between an approaching threat and its refuge can be expressed as an angle we call the"interpath angle"or"Φ,"which describes the angle between the paths of predator and prey to the prey's refuge and thus expresses the degree to which prey must run toward an approaching predator.In general,we might expect that prey would escape at greater distances if they must flee toward a predator to reach its burrow.The"race for life"model makes formal predictions about how Φ should affect FID.We evaluated the model by studying escape decisions in yellow-bellied marmots Marmota flaviventer,a species which flees to burrows.We found support for some of the model's predictions,yet the relationship between Φ and FID was less clear.Marmots may not assess Φ in a continuous fashion;but we found that binning angle into 4 45° bins explained a similar amount of variation as models that analyzed angle continu-ously.Future studies of Φ,especially those that focus on how different species perceive relative orientation,will likely enhance our understanding of its importance in flight decisions.

antipredator behaviorescape behaviorescape theoryescape trajectoryrace for life model

Kwasi WRENSFORD、Jahaziel GUTIERREZ、William E.COOPER JR、Daniel T.BLUMSTEIN

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Department of Integrative Biology,Museum of Vertebrate Zoology,University of California,Berkeley,CA 94720,USA

The Rocky Mountain Biological Laboratory,Crested Butte,CO 81224,USA

Department of Biology,Indiana University Purdue University Fort Wayne,Fort Wayne,IN 46805,USA

Department of Ecology and Evolutionary Biology,University of California,6121 Young Drive South,Los Angeles,CA 90095-1606,USA

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National Science Foundation's Research Experience for Undergraduates grant programNational Science FoundationNational Science FoundationNational Science Foundation

DBI126713DEB-11196601557130DBI-126713

2022

动物学报(英文版)
中国科学院动物研究所,中国动物学会

动物学报(英文版)

CSCDSCI
影响因子：0.198
ISSN：1674-5507
年,卷(期)：2022.68(3)
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