کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
5538554 1552203 2017 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Fish use colour to learn compound visual signals
ترجمه فارسی عنوان
ماهی برای رنگ آمیزی سیگنال های بصری از رنگ استفاده می کند
کلمات کلیدی
طبقه بندی، سیگنال های رنگی، چشم انداز رنگی، صخره های مرجانی، حدت بینایی،
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم دامی و جانورشناسی
چکیده انگلیسی
Colour patterns displayed by animals frequently comprise multiple elements, including hue, pattern, luminance and texture. Predators' perception of and learning about visual stimuli has important implications for the evolution of animal coloration, including aposematism and mimicry. This study investigated how a coral reef fish, the triggerfish Rhinecanthus aculeatus, learnt different elements of colour patterns. Fish trained to associate a food reward with blue, yellow and green patterns on a grey background selected novel stimuli by chromaticity, rather than pattern or luminance contrast. By comparison, when presented with small orange spots the fish appeared to learn luminance, which is consistent with findings in other animals, including bees, birds and humans, that for small objects the achromatic component of the signal is more salient than chromaticity. While internal pattern did not appear to be learnt in our first two experiments, a subsequent test showed that fish could distinguish between spotted and striped patterns over various sizes, up to the limits of their visual acuity. These results are discussed in relation to visual processing of colour patterns and the evolution of visual signals in the marine environment.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Animal Behaviour - Volume 125, March 2017, Pages 93-100
نویسندگان
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