Backgrounds and the evolution of visual signals

EM Caves, AL Davis, S Nowicki, S Johnsen - Trends in Ecology & Evolution, 2024 - cell.com
Color signals which mediate behavioral interactions across taxa and contexts are often
thought of as color'patches'–parts of an animal that appear colorful compared to other parts …

Quantitative Colour Pattern Analysis (QCPA): A comprehensive framework for the analysis of colour patterns in nature

CP van den Berg, J Troscianko… - Methods in Ecology …, 2020 - Wiley Online Library
To understand the function of colour signals in nature, we require robust quantitative
analytical frameworks to enable us to estimate how animal and plant colour patterns appear …

Peacock spiders prefer image statistics of average natural scenes over those of male ornamentation

MC Hardenbicker, C Tedore - Behavioral Ecology, 2023 - academic.oup.com
The origins of preferences that drive the evolution of arbitrary sexual signals have been hotly
debated for more than 150 years. An emerging but little-tested theory, efficient coding theory …

Long‐wavelength‐sensitive (lws) opsin gene expression, foraging and visual communication in coral reef fishes

SM Stieb, F Cortesi, L Jardim de Queiroz… - Molecular …, 2023 - Wiley Online Library
Coral reef fishes are diverse in ecology and behaviour and show remarkable colour
variability. Investigating the visual pigment gene (opsin) expression in these fishes makes it …

Sexual selection on jumping spider color pattern: investigation with a new quantitative approach

W Zhou, L Yu, BZW Kwek, G Jin, H Zeng… - Behavioral …, 2021 - academic.oup.com
How animals assess information encoded in individual color patches have been extensively
studied, yet the role of both individual color patches and gross color pattern (ie, the …

Visual background choice and light environment affect male guppy visual contrast

JA Endler, DM Raggay, S Maerowitz-McMahan… - Vision, 2022 - mdpi.com
Male guppies (Poecilia reticulata) have multiple colored spots and perform courtship
displays near the edges of streams in Trinidad in shallow water flowing through rainforest …

Signal detectability and boldness are not the same: the function of defensive coloration in nudibranchs is distance-dependent

CP van den Berg, JA Endler… - Proceedings of the …, 2023 - royalsocietypublishing.org
Aposematic signals visually advertise underlying anti-predatory defences in many species.
They should be detectable (eg contrasting against the background) and bold (eg using …

[PDF][PDF] Using colour pattern edge contrast statistics to predict detection speed and success in triggerfish (Rhinecanthus aculeatus)

CP van den Berg, JA Endler… - Journal of …, 2022 - journals.biologists.com
Edge detection is important for object detection and recognition. However, we do not know
whether edge statistics accurately predict the detection of prey by potential predators. This is …

Chemical defences indicate bold colour patterns with reduced variability in aposematic nudibranchs

CP van den Berg, M Santon… - … of the Royal …, 2024 - royalsocietypublishing.org
The selective factors that shape phenotypic diversity in prey communities with aposematic
animals are diverse and coincide with similar diversity in the strength of underlying …

Female preference for males with lower pattern contrast follows Weber's law of proportional processing in jumping spiders

BZW Kwek, W Zhou, L Yu, G Ding, D Li - Functional Ecology, 2023 - Wiley Online Library
According to Weber's law of proportional processing, perceptual discrimination between
stimuli of different magnitudes is based on their proportional differences in magnitude (not …