气候变化领域集成服务门户(CCPortal): Nahua mushroom gatherers use area-restricted search strategies that conform to marginal value theorem predictions

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DOI	10.1073/pnas.1814476116
	Nahua mushroom gatherers use area-restricted search strategies that conform to marginal value theorem predictions
	Pacheco-Cobos L.; Winterhalder B.; Cuatianquiz-Lima C.; Rosetti M.F.; Hudson R.; Ross C.T.
发表日期	2019
ISSN	0027-8424
起始页码	10339
结束页码	10347
卷号	116 期号:21
英文摘要	We develop a method of analysis for testing the marginal value theorem (MVT) in natural settings that does not require an independent definition or mapping of patches. We draw on recent theoretical work on area-restricted search (ARS) that links turningangle and step-size changes to geographically localized encounterrates. These models allow us to estimate "giving-up times" using encounter-annotated GPS tracking data. Applied to a case study of Nahua mushroom foragers, these models identify distinct forms of intrapatch and interpatch search behavior, with intrapatch search transitioning to interpatch search after a predictable interval of time since the last encounter with a harvested mushroom. Our empirical estimate of giving-up time coincides with the theoretically optimal giving-up time derived under the MVT in the same environment. The MVT is currently underused in studies of human foraging and settlement patterns, due in large part to the difficulty of identifying discrete resource patches and quantifying their characteristics. Our methods mitigate the need to make such discrete maps of patches and thus have the potential to broaden the scope for empirical evaluations of the MVT and related theory in humans. Beyond studies of naturalistic foraging in humans and other animals, our approach has implications for optimization of search behavior in a range of applied fields where search dynamics must be adapted to shifting patterns of environmental heterogeneity affecting prey density and patchiness. © 2019 National Academy of Sciences. All rights reserved.
英文关键词	area-restricted search; GPS; L évy flight; marginal value theorem; tracking
语种	英语
scopus关键词	article; forager; foraging; human; mushroom; Nahua; nonhuman; prediction; theoretical study
来源期刊	Proceedings of the National Academy of Sciences of the United States of America
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/160421
作者单位	Pacheco-Cobos, L., Cuerpo Académico Biología y Ecología Del Comportamiento, Facultad de Biología, Universidad Veracruzana, Xalapa, Veracruz, 91090, Mexico; Winterhalder, B., Graduate Group in Ecology, Department of Anthropology, University of California, Davis, CA 95616, United States; Cuatianquiz-Lima, C., Centro Tlaxcala de Biología de la Conducta, Universidad Autónoma de Tlaxcala, Tlaxcala, 90062, Mexico; Rosetti, M.F., Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico; Hudson, R., Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, Mexico City, 04510, Mexico; Ross, C.T., Department of Human Behavior, Ecology and Culture, Max Planck Institute for Evolutionary Anthropology, Leipzig, 04103, Germany
推荐引用方式 GB/T 7714	Pacheco-Cobos L.,Winterhalder B.,Cuatianquiz-Lima C.,et al. Nahua mushroom gatherers use area-restricted search strategies that conform to marginal value theorem predictions[J],2019,116(21).
APA	Pacheco-Cobos L.,Winterhalder B.,Cuatianquiz-Lima C.,Rosetti M.F.,Hudson R.,&Ross C.T..(2019).Nahua mushroom gatherers use area-restricted search strategies that conform to marginal value theorem predictions.Proceedings of the National Academy of Sciences of the United States of America,116(21).
MLA	Pacheco-Cobos L.,et al."Nahua mushroom gatherers use area-restricted search strategies that conform to marginal value theorem predictions".Proceedings of the National Academy of Sciences of the United States of America 116.21(2019).