Examples
The epicuticular wax coating on mature plum fruit gives them a glaucous appearance. Another familiar example is found in the common grape genus (Vitis vinifera). Some cacti have a glaucous coating on their stem(s). Glaucous coatings are hydrophobic, prevent wetting by rain, and hinder climbing of leaves, stem or fruit by insects. On fruits, glaucous coatings may function as a deterrent to climbing and feeding by small insects in favor of increased seed dispersal offered by larger animals such as mammals and birds.
The blue-grey camouflage coloring of some species of birds and sea and land animals causes their appearance to blend with their surroundings, making their detection by predators difficult.
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Wine grapes with glaucous coating
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Plums with some glaucous coating visible
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Cryptocarya glaucescens with a glaucous underleaf
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Glaucous Gull
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Glaucous-winged Gull
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Glaucous Macaw
Read more about this topic: Glaucous
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