Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1086/660970 |
Within-Species Digestive Tract Flexibility in Rufous-Collared Sparrows and the Climatic Variability Hypothesis | |
Maldonado, Karin1,2; Bozinovic, Francisco3,4; Rojas, Jose M.3,4; Sabat, Pablo3,4,5 | |
通讯作者 | Maldonado, Karin |
来源期刊 | PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY
![]() |
ISSN | 1522-2152 |
出版年 | 2011 |
卷号 | 84期号:4页码:377-384 |
英文摘要 | The climatic variability hypothesis (CVH) states that species are geographically more widespread at higher latitudes because individuals have a broader range of physiological tolerance or phenotypic flexibility as latitude and climatic variability increase. However, it remains unclear to what extent climatic variability or latitude, acting on the phenotype, account for any observed geographical gradient in mean range size. In this study, we analyzed the physiological flexibility within the CVH framework by using an intraspecific population experimental approach. We tested for a positive relationship between digestive-tract flexibility (i.e., morphology and enzyme activities) and latitude and climatic and natural diet variability in populations of rufous-collared sparrows (Zonotrichia capensis) captured in desert (27 degrees S), Mediterranean (33 degrees S), and cold-temperate (41 degrees S) sites in Chile. In accordance with the CVH, we observed a positive relationship between the magnitude of digestive-tract flexibility and environmental variability but not latitude. The greatest digestive flexibility was observed in birds at middle latitudes, which experience the most environmental variability (a Mediterranean climate), whereas individuals from the most stable climates (desert and cold-temperate) exhibited little or no digestive-tract flexibility in response to experimental diets. Our findings support the idea that latitudinal gradients in geographical ranges may be strongly affected by the action of regional features, which makes it difficult to find general patterns in the distribution of species. |
类型 | Article |
语种 | 英语 |
国家 | Chile |
收录类别 | SCI-E |
WOS记录号 | WOS:000292925900004 |
WOS关键词 | ZONOTRICHIA-CAPENSIS ; PHENOTYPIC PLASTICITY ; STABLE ISOTOPES ; THERMAL TOLERANCE ; GLOBAL ANALYSIS ; RAPOPORTS RULE ; ANNUAL CYCLE ; DIETARY ; BIRDS ; RESPONSES |
WOS类目 | Physiology ; Zoology |
WOS研究方向 | Physiology ; Zoology |
资源类型 | 期刊论文 |
条目标识符 | http://119.78.100.177/qdio/handle/2XILL650/169964 |
作者单位 | 1.Inst Filosofia & Ciencias Complejidad, Santiago, Chile; 2.Univ La Serena, Dept Biol, Fac Ciencias, La Serena, Chile; 3.Pontificia Univ Catolica Chile, Fac Ciencias Biol, Ctr Adv Studies Ecol & Biodivers, Lab Int Cambio Global, Santiago, Chile; 4.Pontificia Univ Catolica Chile, Fac Ciencias Biol, Dept Ecol, Santiago, Chile; 5.Univ Chile, Fac Ciencias, Dept Ciencias Ecol, Santiago, Chile |
推荐引用方式 GB/T 7714 | Maldonado, Karin,Bozinovic, Francisco,Rojas, Jose M.,et al. Within-Species Digestive Tract Flexibility in Rufous-Collared Sparrows and the Climatic Variability Hypothesis[J],2011,84(4):377-384. |
APA | Maldonado, Karin,Bozinovic, Francisco,Rojas, Jose M.,&Sabat, Pablo.(2011).Within-Species Digestive Tract Flexibility in Rufous-Collared Sparrows and the Climatic Variability Hypothesis.PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY,84(4),377-384. |
MLA | Maldonado, Karin,et al."Within-Species Digestive Tract Flexibility in Rufous-Collared Sparrows and the Climatic Variability Hypothesis".PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY 84.4(2011):377-384. |
条目包含的文件 | 条目无相关文件。 |
除非特别说明,本系统中所有内容都受版权保护,并保留所有权利。