Arid
DOI10.1016/j.jaridenv.2007.01.003
Physiological diversity in tolerance to water deprivation among species of South American desert rodents
Bozinovic, F.; Cruz-Neto, A. P.; Cortes, A.; Diaz, G. B.; Ojeda, R. A.; Giannoni, S. M.
通讯作者Bozinovic, F.
来源期刊JOURNAL OF ARID ENVIRONMENTS
ISSN0140-1963
EISSN1095-922X
出版年2007
卷号70期号:3页码:427-442
英文摘要

Rodents from and and semi-arid deserts are faced with the problem of water conservation. The physiological responses of small rodents to such conditions have been intensively investigated over broad geographically disjunct areas. Despite the presence of xeric habitats in South America since the late Tertiary, some studies suggest that sigmodontine South-American desert rodents do not display the same diversity of physiological responses at the species level as those observed in other desert-dwelling species of rodents. In this paper, we analyzed the physiological responses to water deprivation, at the interespecific and interindividual level, among eight species of sigmodontine desert-dwelling rodents from different geographical areas within South-American deserts. Using randomization tests, we found no significant phylogenetic signal for resistance to water deprivation or for individual variability in this response. Contrary to our initial predictions, we observed that sigmodontine rodents from arid/semi-arid habitats (Monte Desert) had significantly lower rates of body mass loss per day (higher tolerances to water deprivation) than species from the hyperarid deserts. We showed that sigmodontine rodents from South America showed a remarkable diversity of physiological mechanisms for coping with water shortage resulting from different evolutionary adaptive strategies. This diversity, however, displays a rather unexpected pattern in terms of its geographical distribution. (c) 2007 Elsevier Ltd. All rights reserved.


英文关键词body mass balance geographic comparisons physiological tolerances water economy
类型Article
语种英语
国家Chile ; Brazil ; Argentina
收录类别SCI-E
WOS记录号WOS:000247288900004
WOS关键词MONTE DESERT ; SMALL MAMMALS ; ECOLOGICAL IMPLICATIONS ; PHYLOGENETIC SIGNAL ; CLIMATIC ADAPTATION ; SYMPATRIC RODENTS ; METABOLIC-RATE ; ARGENTINA ; ECONOMY ; KIDNEY
WOS类目Ecology ; Environmental Sciences
WOS研究方向Environmental Sciences & Ecology
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/154804
作者单位(1)Pontificia Univ Catolica Chile, Fac Ciencias Biol, Ctr Adv Studies Ecol & Biodivers, Dept Ecol, Santiago 6513677, Chile;(2)UNESP, Inst Biociencias, Dept Zool, BR-13506900 Rio Claro, SP, Brazil;(3)Univ La Serena, Fac Ciencias, Ctr Estudios Avanzados Zonas Aridas, Dept Biol, La Serena, Chile;(4)Inst Argentino Invest Zonas Aridas, RA-5500 Mendoza, Argentina
推荐引用方式
GB/T 7714
Bozinovic, F.,Cruz-Neto, A. P.,Cortes, A.,et al. Physiological diversity in tolerance to water deprivation among species of South American desert rodents[J],2007,70(3):427-442.
APA Bozinovic, F.,Cruz-Neto, A. P.,Cortes, A.,Diaz, G. B.,Ojeda, R. A.,&Giannoni, S. M..(2007).Physiological diversity in tolerance to water deprivation among species of South American desert rodents.JOURNAL OF ARID ENVIRONMENTS,70(3),427-442.
MLA Bozinovic, F.,et al."Physiological diversity in tolerance to water deprivation among species of South American desert rodents".JOURNAL OF ARID ENVIRONMENTS 70.3(2007):427-442.
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