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The distribution of wood‐ants (Formica lugubris Zetterstedt) in a northern English forest
Abstract. 1. A survey of 202 ha of planted forest in Langdale Forest, North Yorkshire, in 1972 discovered 326 occupied and thirty‐eight deserted nests of Formica lugubris Zetterstedt. The averageExpand
Quantifying iridescent coloration in animals: a method for improving repeatability
Quantification of animal colors is important to a variety of fields of research, especially those dealing with visual communication and sexual selection. Most animal colors are easily measured usingExpand
Light habitats and the role of polarized iridescence in the sensory ecology of neotropical nymphalid butterflies (Lepidoptera: Nymphalidae)
SUMMARY The exploitation of polarized light may increase perceived visual contrast independent of spectrum and intensity and thus have adaptive value in forest habitats, where illumination variesExpand
Analysing the patterning of a sequence of discrete behavioural events
PPSH—a multi-order Markov graphical analysis—would appear to be the most important for future work, especially when used in conjunction with other techniques described. Expand
Behavioural coordination between an aphis (Symydobius oblongus von Heyden; Hemiptera: Callaphidae) and the ant that attends it (Formica lugubris Zetterstedt; Hymenoptera: Formicidae): An ethological
Abstract The aphis Symydobius oblongus von Heyden can coordinate its defaecation with the presence of its attendant Formica lugubris Zetterstedt, so that 86% of droplets are produced in the 14% ofExpand
Ambient Light Environment and the Evolution of Brightness, Chroma, and Perceived Chromaticity in the Warning Signals of Butterflies
1. Aposematic signals advertise prey distastefulness or metabolic unprofitability to potential predators and have evolved independently in many prey groups over the course of evolutionary history asExpand