دورية أكاديمية
Signal detectability and boldness are not the same: the function of defensive coloration in nudibranchs is distance-dependent.
| العنوان: | Signal detectability and boldness are not the same: the function of defensive coloration in nudibranchs is distance-dependent. |
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| المؤلفون: | van den Berg CP; Marine Sensory Ecology Group, The University of Queensland, School of Biological Sciences, Brisbane, QLD 4072, Australia., Endler JA; Centre for Integrative Ecology, School of Life and Environmental Sciences, Deakin University, Geelong, Victoria 3216, Australia.; Zoology and Ecology Tropical Environments Sciences, College of Science and Engineering, James Cook University, Smithfield Cairns, QLD 4878, Australia., Cheney KL; Marine Sensory Ecology Group, The University of Queensland, School of Biological Sciences, Brisbane, QLD 4072, Australia. |
| المصدر: | Proceedings. Biological sciences [Proc Biol Sci] 2023 Jul 26; Vol. 290 (2003), pp. 20231160. Date of Electronic Publication: 2023 Jul 26. |
| نوع المنشور: | Journal Article; Research Support, Non-U.S. Gov't |
| اللغة: | English |
| بيانات الدورية: | Publisher: Royal Society of London Country of Publication: England NLM ID: 101245157 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1471-2954 (Electronic) Linking ISSN: 09628452 NLM ISO Abbreviation: Proc Biol Sci Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: London : Royal Society of London, c1990- |
| مواضيع طبية MeSH: | Biological Evolution* , Gastropoda*, Animals ; Visual Perception ; Learning ; Predatory Behavior |
| مستخلص: | Aposematic signals visually advertise underlying anti-predatory defences in many species. They should be detectable (e.g. contrasting against the background) and bold (e.g. using internal pattern contrast) to enhance predator recognition, learning and memorization. However, the signalling function of aposematic colour patterns may be distance-dependent: signals may be undetectable from a distance to reduce increased attacks from naïve predators but bold when viewed up close. Using quantitative colour pattern analysis, we quantified the chromatic and achromatic detectability and boldness of colour patterns in 13 nudibranch species with variable strength of chemical defences in terms of unpalatability and toxicity, approximating the visual perception of a triggerfish ( Rhinecanthus aculeatus ) across a predation sequence (detection to subjugation). When viewed from an ecologically relevant distance of 30 cm, there were no differences in detectability and boldness between well-defended and undefended species. However, when viewed at closer distances (less than 30 cm), well-defended species were more detectable and bolder than undefended species. As distance increased, detectability decreased more significantly than boldness for defended species. For undefended species, boldness and detectability remained comparatively consistent, regardless of viewing distance. We provide evidence for distance-dependent signalling in aposematic nudibranchs and highlight the importance of distinguishing signal detectability from boldness in studies of aposematism. |
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| فهرسة مساهمة: | Keywords: aposematism; crypsis; predator psychology; secondary defences; signalling honesty; visual modelling |
| سلسلة جزيئية: | figshare 10.6084/m9.figshare.c.6730004 |
| تواريخ الأحداث: | Date Created: 20230726 Date Completed: 20230727 Latest Revision: 20230729 |
| رمز التحديث: | 20230729 |
| مُعرف محوري في PubMed: | PMC10369023 |
| DOI: | 10.1098/rspb.2023.1160 |
| PMID: | 37491958 |
| قاعدة البيانات: | MEDLINE |
| تدمد: | 1471-2954 |
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| DOI: | 10.1098/rspb.2023.1160 |