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DOI10.1073/pnas.1919417117
Imperfect transparency and camouflage in glass frogs
Barnett, James B.1,2; Michalis, Constantine2; Anderson, Hannah M.1; McEwen, Brendan L.1; Yeager, Justin3; Pruitt, Jonathan N.1; Scott-Samuel, Nicholas E.4; Cuthill, Innes C.2
2020-05-26
发表期刊PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA
ISSN0027-8424
出版年2020
卷号117期号:23页码:12885-12890
文章类型Article
语种英语
国家Canada; England; Ecuador
英文摘要

Camouflage patterns prevent detection and/or recognition by matching the background, disrupting edges, or mimicking partic-ular background features. In variable habitats, however, a single pattern cannot match all available sites all of the time, and efficacy may therefore be reduced. Active color change provides an alterna-tive where coloration can be altered to match local conditions, but again efficacy may be limited by the speed of change and range of patterns available. Transparency, on the other hand, creates high-fidelity camouflage that changes instantaneously to match any sub-strate but is potentially compromised in terrestrial environments where image distortion may be more obvious than in water. Glass frogs are one example of terrestrial transparency and are well known for their transparent ventral skin through which their bones, intes-tines, and beating hearts can be seen. However, sparse dorsal pig-mentation means that these frogs are better described as translucent. To investigate whether this imperfect transparency acts as camou-flage, we used in situ behavioral trials, visual modeling, and labora-tory psychophysics. We found that the perceived luminance of the frogs changed depending on the immediate background, lowering detectability and increasing survival when compared to opaque frogs. Moreover, this change was greatest for the legs, which surround the body at rest and create a diffuse transition from background to frog luminance rather than a sharp, highly salient edge. This passive change in luminance, without significant modification of hue, suggests a cam-ouflage strategy, "edge diffusion," distinct from both transparency and active color change.


英文关键词camouflage color change edge diffusion glass frog transparency
领域地球科学 ; 气候变化 ; 资源环境
收录类别SCI-E
WOS记录号WOS:000545949100024
WOS关键词DISRUPTIVE COLORATION ; PREDATION ; CRYPSIS ; VISION
WOS类目Multidisciplinary Sciences
WOS研究方向Science & Technology - Other Topics
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文献类型期刊论文
条目标识符http://119.78.100.173/C666/handle/2XK7JSWQ/271720
专题资源环境科学
作者单位1.McMaster Univ, Dept Psychol Neurosci & Behav, Hamilton, ON L8S 4K1, Canada;
2.Univ Bristol, Sch Biol Sci, Bristol BS8 1TQ, Avon, England;
3.Univ Las Amer, Biodiversidad Medio Ambiente & Salud, Quito 170125, Ecuador;
4.Univ Bristol, Sch Psychol Sci, Bristol BS8 1TU, Avon, England
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GB/T 7714
Barnett, James B.,Michalis, Constantine,Anderson, Hannah M.,et al. Imperfect transparency and camouflage in glass frogs[J]. PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,2020,117(23):12885-12890.
APA Barnett, James B..,Michalis, Constantine.,Anderson, Hannah M..,McEwen, Brendan L..,Yeager, Justin.,...&Cuthill, Innes C..(2020).Imperfect transparency and camouflage in glass frogs.PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA,117(23),12885-12890.
MLA Barnett, James B.,et al."Imperfect transparency and camouflage in glass frogs".PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA 117.23(2020):12885-12890.
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