Scopus记录号: 2-s2.0-85056828394
论文题名: Colour pattern divergence in reef fish species is rapid and driven by both range overlap and symmetry
作者: Hemingson C.R. ; Cowman P.F. ; Hodge J.R. ; Bellwood D.R.
刊名: Ecology Letters
ISSN: 1461023X
出版年: 2019
卷: 22, 期: 1 起始页码: 190
结束页码: 199
语种: 英语
英文关键词: Age
; colours
; divergence
; overlap
; patterns
; reef fishes
; signals
; symmetry
Scopus关键词: Anthozoa
; Chaetodon
; Chaetodontidae
; Pisces
英文摘要: Signal divergence is an important process underpinning the diversification of lineages. Research has shown that signal divergence is greatest in species pairs that possess high geographic range overlap. However, the influence of range-size differences within pairs is less understood. We investigated how these factors have shaped signal divergence within brightly coloured coral reef butterflyfishes (genus: Chaetodon). Using a novel digital imaging methodology, we quantified both colouration and pattern using 250 000 sample points on each fish image. Surprisingly, evolutionary age did not affect colour pattern dissimilarity between species pairs, with average differences arising in just 300 000 years. However, the effect of range overlap and range symmetry was significant. Species-pair colour patterns become more different with increasing overlap, but only when ranges are similar in size. When ranges differ markedly in area, species-pair colour patterns become more similar with increasing overlap. This suggests that species with small ranges may maintain non-colour-based species boundaries. © 2018 John Wiley & Sons Ltd/CNRS 资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/122767
Appears in Collections: 气候变化事实与影响
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作者单位: College of Science and Engineering, James Cook University, Townsville, 4811, Australia; ARC Centre of Excellence for Coral Reef Studies, James Cook University, Townsville, 4811, Australia; Department of Evolution and Ecology, University of California Davis, Davis, CA 95616, United States
Recommended Citation:
Hemingson C.R.,Cowman P.F.,Hodge J.R.,et al. Colour pattern divergence in reef fish species is rapid and driven by both range overlap and symmetry[J]. Ecology Letters,2019-01-01,22(1)