XTBG OpenIR  > 动植物关系组
Does spatial variation in predation pressure modulate selection for aposematism?
Aluthwattha, S. Tharanga; Harrison, Rhett D.; Ranawana, Kithsiri B.; Xu, Cheng; Lai, Ren; Chen, Jin
2017
Source PublicationECOLOGY AND EVOLUTION
Volume7Issue:18Pages:7560-7572
AbstractIt is widely believed that aposematic signals should be conspicuous, but in nature, they vary from highly conspicuous to near cryptic. Current theory, including the honest signal or trade-off hypotheses of the toxicity-conspicuousness relationship, cannot explain why adequately toxic species vary substantially in their conspicuousness. Through a study of similarly toxic Danainae (Nymphalidae) butterflies and their mimics that vary remarkably in their conspicuousness, we show that the benefits of conspicuousness vary along a gradient of predation pressure. Highly conspicuous butterflies experienced lower avian attack rates when background predation pressure was low, but attack rates increased rapidly as background predation pressure increased. Conversely, the least conspicuous butterflies experienced higher attack rates at low predation pressures, but at high predation pressures, they appeared to benefit from crypsis. Attack rates of intermediately conspicuous butterflies remained moderate and constant along the predation pressure gradient. Mimics had a similar pattern but higher attack rates than their models and mimics tended to imitate the signal of less attacked model species along the predation pressure gradient. Predation pressure modulated signal fitness provides a possible mechanism for the maintenance of variation in conspicuousness of aposematic signals, as well as the initial survival of conspicuous signals in cryptic populations in the process of aposematic signal evolution, and an alternative explanation for the evolutionary gain and loss of mimicry.
Department其他
KeywordConspicuousness Danainae Fitness Mimicry Toxicity Warning Signals
Language英语
Document Type期刊论文
Identifierhttp://ir.xtbg.org.cn/handle/353005/10742
Collection动植物关系组
Corresponding AuthorChen, Jin
Recommended Citation
GB/T 7714
Aluthwattha, S. Tharanga,Harrison, Rhett D.,Ranawana, Kithsiri B.,et al. Does spatial variation in predation pressure modulate selection for aposematism?[J]. ECOLOGY AND EVOLUTION,2017,7(18):7560-7572.
APA Aluthwattha, S. Tharanga,Harrison, Rhett D.,Ranawana, Kithsiri B.,Xu, Cheng,Lai, Ren,&Chen, Jin.(2017).Does spatial variation in predation pressure modulate selection for aposematism?.ECOLOGY AND EVOLUTION,7(18),7560-7572.
MLA Aluthwattha, S. Tharanga,et al."Does spatial variation in predation pressure modulate selection for aposematism?".ECOLOGY AND EVOLUTION 7.18(2017):7560-7572.
Files in This Item: Download All
File Name/Size DocType Version Access License
Does spatial variati(839KB) 开放获取CC BY-NC-SAView Download
Related Services
Recommend this item
Bookmark
Usage statistics
Export to Endnote
Google Scholar
Similar articles in Google Scholar
[Aluthwattha, S. Tharanga]'s Articles
[Harrison, Rhett D.]'s Articles
[Ranawana, Kithsiri B.]'s Articles
Baidu academic
Similar articles in Baidu academic
[Aluthwattha, S. Tharanga]'s Articles
[Harrison, Rhett D.]'s Articles
[Ranawana, Kithsiri B.]'s Articles
Bing Scholar
Similar articles in Bing Scholar
[Aluthwattha, S. Tharanga]'s Articles
[Harrison, Rhett D.]'s Articles
[Ranawana, Kithsiri B.]'s Articles
Terms of Use
No data!
Social Bookmark/Share
File name: Does spatial variation in predation pressure modulate selection for aposematism.pdf
Format: Adobe PDF
This file does not support browsing at this time
All comments (0)
No comment.
 

Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.