Arid
DOI10.1093/beheco/arr082
Attack-based indices, not movement patterns, reveal intraspecific variation in foraging behavior
Williams, Steven C.; McBrayer, Lance D.
通讯作者McBrayer, Lance D.
来源期刊BEHAVIORAL ECOLOGY
ISSN1045-2249
EISSN1465-7279
出版年2011
卷号22期号:5页码:993-1002
英文摘要

In lizards, much of the research on foraging patterns has regarded foraging behavior as static within species and has quantified foraging based on movement patterns alone. Sole use of movement patterns has been recognized as problematic because movements are often related to activities other than foraging (e.g., reproduction). Consequently, intraspecific variation in foraging behavior and its ecological consequences (e.g., diet variation) have been dramatically under studied. In this study, we examined the foraging behavior and diet of the Florida scrub lizard (Sceloporus woodi). Our objectives were 1) to quantify the variation in foraging behavior through the activity season to document how movement and foraging varies between sexes across the breeding and post-breeding seasons, 2) to quantify the efficacy of movement patterns versus attack-based metrics in detecting variation, and 3) to quantify the dietary consequences of variation in foraging. We found no differences in movement patterns between seasons or sexes, but we did find sexual variation in attack behavior and corresponding seasonal and sexual variation in diet. Indeed, a new attack-based index, attacks while stationary (AWS), was able to show precisely how foraging patterns varied. Combining attack-based indices and lag sequential analysis provided a complete description of how prey was acquired compared with using movement patterns alone. Our results provide a cautionary note for future researchers; focusing solely on movement patterns and/or ignoring seasonal and sexual variation in foraging behavior misses ecologically relevant variation that is highly informative about the causes and consequences of changes in foraging behavior.


英文关键词attacks while stationary foraging behavior lag sequential analysis lizard Sceloporus woodiry stomach flushing
类型Article
语种英语
国家USA
收录类别SCI-E
WOS记录号WOS:000294358400016
WOS关键词FLORIDA SCRUB LIZARD ; KALAHARI LACERTID LIZARDS ; MOUNTAIN SPINY LIZARDS ; SEXUAL SIZE DIMORPHISM ; RELATIVE CLUTCH MASS ; FRINGE-TOED LIZARD ; SIT-AND-WAIT ; SCELOPORUS-UNDULATUS ; DESERT LIZARDS ; UMA-INORNATA
WOS类目Behavioral Sciences ; Biology ; Ecology ; Zoology
WOS研究方向Behavioral Sciences ; Life Sciences & Biomedicine - Other Topics ; Environmental Sciences & Ecology ; Zoology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/167328
作者单位Georgia So Univ, Dept Biol, Statesboro, GA 30460 USA
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Williams, Steven C.,McBrayer, Lance D.. Attack-based indices, not movement patterns, reveal intraspecific variation in foraging behavior[J],2011,22(5):993-1002.
APA Williams, Steven C.,&McBrayer, Lance D..(2011).Attack-based indices, not movement patterns, reveal intraspecific variation in foraging behavior.BEHAVIORAL ECOLOGY,22(5),993-1002.
MLA Williams, Steven C.,et al."Attack-based indices, not movement patterns, reveal intraspecific variation in foraging behavior".BEHAVIORAL ECOLOGY 22.5(2011):993-1002.
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