干旱区生态环境知识资源中心(Arid): Living on the edge: Glucocorticoid physiology in desert iguanas (Dipsosaurus dorsalis) is predicted by distance from an anthropogenic disturbance, body condition, and population density

Arid

DOI	10.1016/j.ygcen.2020.113468
	Living on the edge: Glucocorticoid physiology in desert iguanas (Dipsosaurus dorsalis) is predicted by distance from an anthropogenic disturbance, body condition, and population density
	Malisch, Jessica L.; Garland, Theodore, Jr.; Claggett, Laurence; Stevenson, Lindsey; Kohl, Ellen A.; John-Alder, Henry B.
通讯作者	Malisch, JL
来源期刊	GENERAL AND COMPARATIVE ENDOCRINOLOGY
ISSN	0016-6480
EISSN	1095-6840
出版年	2020
卷号	294
英文摘要	Ecological factors, such as habitat quality, influence the survival and reproductive success of free-living organisms. Urbanization, including roads, alters native habitat and likely influences physiology, behavior, and ultimately Darwinian fitness. Some effects of roads are clearly negative, such as increased habitat fragmentation and mortality from vehicle collision. However, roads can also have positive effects, such as decreasing predator density and increased vegetation cover, particularly in xeric habitats due to increased water run-off. Glucocorticoids are metabolic hormones that reflect baseline metabolic needs, increase in response to acute challenges, and may mediate endogenous resource trade-offs between survival and reproduction. Here we examined circulating concentrations of corticosterone (baseline and stress-induced) in desert iguanas (Dipsosaurus dorsalis) in relation to the distance from a major anthropogenic disturbance, a high-traffic road in Palm Springs, CA. Additionally, we analyzed body condition and population density as additional predictors of glucocorticoid physiology. Surprisingly, we found lower baseline CORT levels closer to the road, but no effect of distance from road on stress-induced CORT or stress responsiveness (difference between baseline and stress-induced concentrations). Both population density and body condition were negative predictors of baseline CORT, stress-induced CORT, and stress responsiveness. Given the known effect of roads to increase run-off and vegetation density, increased water availability may improve available forage and shade, which may then increase the carrying capacity of the habitat and minimize metabolic challenges for this herbivorous lizard. However, it is important to recognize that surfaces covered by asphalt are not usable habitat for iguanas, likely resulting in a net habitat loss.
英文关键词	Body condition Conservation physiology Corticosterone Desert iguana Road ecology Glucocorticoids
类型	Article
语种	英语
收录类别	SCI-E
WOS记录号	WOS:000537015400001
WOS关键词	CORTICOSTERONE LEVELS ; STRESS-RESPONSE ; ROAD ; LIZARD ; SNAKES ; ABUNDANCE ; CONTEXT ; FOREST
WOS类目	Endocrinology & Metabolism ; Zoology
WOS研究方向	Endocrinology & Metabolism ; Zoology
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/324592
作者单位	[Malisch, Jessica L.; Claggett, Laurence; Stevenson, Lindsey] St Marys Coll Maryland, Dept Biol, St Marys City, MD 20686 USA; [Garland, Theodore, Jr.] Univ Calif Riverside, Dept Evolut Ecol & Organismal Biol, Riverside, CA 92521 USA; [Claggett, Laurence; Stevenson, Lindsey; Kohl, Ellen A.] St Marys Coll Maryland, Environm Studies Dept, St Marys City, MD 20686 USA; [John-Alder, Henry B.] Rutgers State Univ, Dept Ecol Evolut & Nat Resources, New Brunswick, NJ 08901 USA
推荐引用方式 GB/T 7714	Malisch, Jessica L.,Garland, Theodore, Jr.,Claggett, Laurence,et al. Living on the edge: Glucocorticoid physiology in desert iguanas (Dipsosaurus dorsalis) is predicted by distance from an anthropogenic disturbance, body condition, and population density[J],2020,294.
APA	Malisch, Jessica L.,Garland, Theodore, Jr.,Claggett, Laurence,Stevenson, Lindsey,Kohl, Ellen A.,&John-Alder, Henry B..(2020).Living on the edge: Glucocorticoid physiology in desert iguanas (Dipsosaurus dorsalis) is predicted by distance from an anthropogenic disturbance, body condition, and population density.GENERAL AND COMPARATIVE ENDOCRINOLOGY,294.
MLA	Malisch, Jessica L.,et al."Living on the edge: Glucocorticoid physiology in desert iguanas (Dipsosaurus dorsalis) is predicted by distance from an anthropogenic disturbance, body condition, and population density".GENERAL AND COMPARATIVE ENDOCRINOLOGY 294(2020).