干旱区生态环境知识资源中心(Arid): Rattlesnakes Must Drink: Meal Consumption Does Not Improve Hydration State

Arid

DOI	10.1086/704081
	Rattlesnakes Must Drink: Meal Consumption Does Not Improve Hydration State
	Murphy, Megan S.; DeNardo, Dale F.
通讯作者	DeNardo, Dale F.
来源期刊	PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY
ISSN	1522-2152
EISSN	1537-5293
出版年	2019
卷号	92 期号:4 页码:381-385
英文摘要	Water is critical to survival, yet free-standing water is often rare in deserts and seasonally dry environments. Thus, many dry-adapted species utilize either metabolic (that produced from metabolism) or dietary (that found in food) water to meet their hydric needs. It is suspected that desert reptiles can fulfill their hydric needs solely through dietary water intake. However, food consumption does not improve the hydration state of Gila monsters (Heloderma suspectum), a binge-feeding desert lizard, and meal consumption by snakes leads to increased voluntary drinking. Therefore, we predicted that meal consumption would not improve hydration state in dehydrated western diamondbacked rattlesnakes (Crotalus atrox). We found no significant difference in the change in plasma osmolality between moderately dehydrated snakes that consumed a meal and those that did not. In fact, snakes that received a meal reached severe dehydration more than a week sooner than snakes that did not receive a meal. Additionally, consuming a meal when severely dehydrated did not reduce plasma osmolality, whereas severely dehydrated snakes provided with water ab lib. returned to a normosmotic state. These results provide the most convincing evidence that carnivorous desert reptiles likely rely on free-standing water to fulfill their hydric needs. These species have thus had to adapt to sporadic water availability through minimizing water loss and tolerating considerable variation in plasma osmolality.
英文关键词	dehydration osmoregulation reptile dietary water plasma osmolality
类型	Article
语种	英语
国家	USA
收录类别	SCI-E
WOS记录号	WOS:000469228000001
WOS关键词	DIAMOND-BACKED RATTLESNAKES ; FIELD METABOLIC-RATE ; CROTALUS-ATROX ; WATER FLUX ; SKIN RESISTANCE ; SEASONAL WATER ; DESERT LIZARD ; DEHYDRATION ; ENERGY ; BALANCE
WOS类目	Physiology ; Zoology
WOS研究方向	Physiology ; Zoology
来源机构	Arizona State University
资源类型	期刊论文
条目标识符	http://119.78.100.177/qdio/handle/2XILL650/217963
作者单位	Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA
推荐引用方式 GB/T 7714	Murphy, Megan S.,DeNardo, Dale F.. Rattlesnakes Must Drink: Meal Consumption Does Not Improve Hydration State[J]. Arizona State University,2019,92(4):381-385.
APA	Murphy, Megan S.,&DeNardo, Dale F..(2019).Rattlesnakes Must Drink: Meal Consumption Does Not Improve Hydration State.PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY,92(4),381-385.
MLA	Murphy, Megan S.,et al."Rattlesnakes Must Drink: Meal Consumption Does Not Improve Hydration State".PHYSIOLOGICAL AND BIOCHEMICAL ZOOLOGY 92.4(2019):381-385.