Arid
DOI10.1016/j.zool.2011.09.005
Phenotypic flexibility in basal metabolic rate is associated with rainfall variability among populations of rufous-collared sparrow
Maldonado, Karin1,2; Bozinovic, Francisco3,4; Cavieres, Grisel5; Fuentes, Carolina A.; Cortes, Arturo2; Sabat, Pablo3,4,5
通讯作者Maldonado, Karin
来源期刊ZOOLOGY
ISSN0944-2006
出版年2012
卷号115期号:2页码:128-133
英文摘要

Phenotypic flexibility in metabolic rates allows organisms to reversibly adjust their energy flow to meet challenges imposed by a variable environment. In turn, the food habits hypothesis (FHH) predicts that species or populations adjust their basal metabolic rate (BMR) according to the diet attributes such as food abundance or predictability. Desert ecosystems represent a temporally heterogeneous environment because of low rain pulse predictability, which is also associated with temporal variation in food resources. In the present study, we investigated the relationship between the magnitude of BMR flexibility in response to dietary acclimation and the inter-annual rainfall variability in three populations of rufous-collared sparrows. Specifically we addressed the question of whether birds from a desert environment are more flexible in BMR than those from non-desert habitats. We found a positive trend between BMR flexibility and the inter-annual rainfall variability. In fact, dietary treatments had a significant effect only in desert birds, a result that also supported the FHH. Our study confirms the existence of phenotypic variation in response to environmental conditions among populations, and also highlights the importance of considering the circumstances in which phenotypic flexibility evolves and the specific environmental cues that induce their expression. (C) 2012 Elsevier GmbH. All rights reserved.


英文关键词Dietary acclimation Food habits hypothesis Metabolic rate Rainfall variability Zonotrichia capensis
类型Article
语种英语
国家Chile
收录类别SCI-E
WOS记录号WOS:000304293100005
WOS关键词NINO SOUTHERN-OSCILLATION ; FOOD-HABITS HYPOTHESIS ; EVAPORATIVE WATER-LOSS ; EL-NINO ; SEMIARID CHILE ; ZONOTRICHIA-CAPENSIS ; INTRASPECIFIC VARIABILITY ; GEOGRAPHIC-VARIATION ; THERMAL-ACCLIMATION ; SEASONAL-CHANGES
WOS类目Zoology
WOS研究方向Zoology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/175369
作者单位1.Univ Chile, Fac Ciencias, Dept Ciencias Ecol, IFICC,Inst Filosofia & Ciencias Complejidad, Santiago, Chile;
2.Univ La Serena, Fac Ciencias, Dept Biol, La Serena, Chile;
3.Pontificia Univ Catolica Chile, Fac Ciencias Biol, LINC Global, Ctr Adv Studies Ecol & Biodivers, Santiago 6513677, Chile;
4.Pontificia Univ Catolica Chile, Fac Ciencias Biol, Dept Ecol, Santiago 6513677, Chile;
5.Univ Chile, Fac Ciencias, Dept Ciencias Ecol, Santiago, Chile
推荐引用方式
GB/T 7714
Maldonado, Karin,Bozinovic, Francisco,Cavieres, Grisel,et al. Phenotypic flexibility in basal metabolic rate is associated with rainfall variability among populations of rufous-collared sparrow[J],2012,115(2):128-133.
APA Maldonado, Karin,Bozinovic, Francisco,Cavieres, Grisel,Fuentes, Carolina A.,Cortes, Arturo,&Sabat, Pablo.(2012).Phenotypic flexibility in basal metabolic rate is associated with rainfall variability among populations of rufous-collared sparrow.ZOOLOGY,115(2),128-133.
MLA Maldonado, Karin,et al."Phenotypic flexibility in basal metabolic rate is associated with rainfall variability among populations of rufous-collared sparrow".ZOOLOGY 115.2(2012):128-133.
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