Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1111/ele.12975 |
The control of risk hypothesis: reactive vs. proactive antipredator responses and stress-mediated vs. food-mediated costs of response | |
Creel, Scott | |
2018-07-01 | |
发表期刊 | ECOLOGY LETTERS
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ISSN | 1461-023X |
EISSN | 1461-0248 |
出版年 | 2018 |
卷号 | 21期号:7页码:947-956 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | Inducible defences against predators evolve because they reduce the rate of direct predation, but this benefit is offset by the cost (if any) of defence. If antipredator responses carry costs, the effect of predators on their prey is partitioned into two components, direct killing and risk effects. There is considerable uncertainty about the strength of risk effects, the factors that affect their strength, and the mechanisms that underlie them. In some cases, antipredator responses are associated with a glucocorticoid stress response, and in other cases they are associated with trade-offs between food and safety, but there is no general theory to explain this variation. Here, I develop the control of risk (COR) hypothesis, predicting that proactive responses to predictable and controllable aspects of risk will generally have food-mediated costs, while reactive responses to unpredictable or uncontrollable aspects of predation risk will generally have stress-mediated costs. The hypothesis is grounded in laboratory studies of neuroendocrine stressors and field studies of food-safety trade-offs. Strong tests of the COR hypothesis will require more studies of responses to natural variation in predation risk and the physiological consequences of these responses, but its explanatory power can be illustrated with existing case studies. |
英文关键词 | Antipredator behaviour inducible defences non-consumptive effect predation risk effect sublethal effect |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000435270600001 |
WOS关键词 | SHARKS CARCHARODON-CARCHARIAS ; PREDATOR HUNTING MODE ; CAPE FUR SEALS ; WHITE SHARKS ; DENSITY-DEPENDENCE ; TEMPORAL VARIATION ; ATTACK ABATEMENT ; TROPHIC CASCADE ; PREGNANCY RATES ; HABITAT USE |
WOS类目 | Ecology |
WOS研究方向 | Environmental Sciences & Ecology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/31148 |
专题 | 资源环境科学 |
作者单位 | Montana State Univ, Dept Ecol, 310 Lewis Hall, Bozeman, MT 59717 USA |
推荐引用方式 GB/T 7714 | Creel, Scott. The control of risk hypothesis: reactive vs. proactive antipredator responses and stress-mediated vs. food-mediated costs of response[J]. ECOLOGY LETTERS,2018,21(7):947-956. |
APA | Creel, Scott.(2018).The control of risk hypothesis: reactive vs. proactive antipredator responses and stress-mediated vs. food-mediated costs of response.ECOLOGY LETTERS,21(7),947-956. |
MLA | Creel, Scott."The control of risk hypothesis: reactive vs. proactive antipredator responses and stress-mediated vs. food-mediated costs of response".ECOLOGY LETTERS 21.7(2018):947-956. |
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