| 来源类型 | Article |
| 规范类型 | 其他 |
| DOI | 10.1098/rspb.2005.3229 |
| ISBN | 1471-2954 |
| Do unprofitable prey evolve traits that profitable prey find difficult to exploit? | |
| Sherratt, Thomas N; Franks, Daniel W | |
| 发表日期 | 2005-10-01 |
| 出处 | Proceedings of the Royal Society B: Biological Sciences |
| 出版者 | Royal Society, The |
| 出版年 | 2005 |
| 页码 | 2441-2447 |
| 语种 | 英语 |
| 摘要 | Prey that are unprofitable to attack (for example, those containing noxious chemicals) are often conspicuously patterned and move in a slower and more predictable manner than species lacking these defences. Contemporary theories suggest these traits have evolved as warning signals because they can facilitate both associative and discriminative avoidance learning in predators. However, it is unclear why these particular traits and not others have tended to evolve in unprofitable prey. Here we show using a signal detection model that unprofitable prey will evolve conspicuous colours and patterns partly because these characteristics cannot readily evolve in profitable prey without close mimicry. The stability of this signal is maintained through the costs of dishonesty in profitable prey. Indeed, unprofitable prey will sometimes evolve a conspicuous form to reduce mimetic parasitism, even in the unlikely event that this form can be more closely mimicked. This is one of the first mathematical models of the evolution of warning signals to allow for the possibility of mimicry, yet our analyses suggest it may offer a general explanation as to why warning signals take the form that they do. Warning signals and mimicry may therefore be more closely related than is currently supposed. |
| URL | http://sro.sussex.ac.uk/id/eprint/22998/ |
| 来源智库 | Science Policy Research Unit (United Kingdom) |
| 引用统计 | |
| 资源类型 | 智库出版物 |
| 条目标识符 | http://119.78.100.153/handle/2XGU8XDN/467193 |
| 推荐引用方式 GB/T 7714 | Sherratt, Thomas N,Franks, Daniel W. Do unprofitable prey evolve traits that profitable prey find difficult to exploit?. 2005. |
| 条目包含的文件 | 条目无相关文件。 | |||||
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。
