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Birds use fruit colour as honest signal of dietary antioxidant rewards
The results indicate that birds actively selected for Anthocyanins in their food and that they may use fruit colour as a foraging signal of anthocyanin antioxidant rewards.
Diptera vectors of avian Haemosporidian parasites: untangling parasite life cycles and their taxonomy
It is stressed that the best way to avoid emergent and reemergent diseases is through a program encompassing ecological restoration, environmental education, and enhanced understanding of the value of ecosystem services.
Plants on red alert: do insects pay attention?
The Defence Indication hypothesis predicts that pleiotropic effects of the pigments and, more generally, plants' shared defence responses, explain why insects might react to plant colouration.
Disruptive coloration provides camouflage independent of background matching
Determining bird predation of artificial moths, it is found that moths which were dissimilar from the background but sported disruptive patterns on the edge of their wings survived better in heterogeneous habitats than did moths with the same patterns inside of the wings and better than cryptic moths.
Specialization on traits as basis for the niche‐breadth of flower visitors and as structuring mechanism of ecological networks
The data suggested a hierarchical sequence of flower traits influencing the flower visitors' behaviour and thus network structure: flowering phenology was found to have the strongest effect, followed by flower height, nectar-tube depth and floral reflectance.
Conspicuousness, not colour as foraging cue in plant–animal signalling
It is hypothesized that conspicuousness determines avian food selection and the contrast hypothesis is defined, which states that diurnal dispersers select fruit colours based on their conspicuousness and not their colour itself.
The role of chromatic and achromatic signals for fruit detection by birds
It is suggested that the relative importance of chromatic and achromatic contrasts is contingent on the chromatics and a chromatic variance of the background and models of signal perception can be improved by incorporating background-specific effects.