Knowledge Resource Center for Ecological Environment in Arid Area
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
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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. |
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