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Dry pollen, is a food source for bees, which may contain 16–30% protein, 1–10% fat, 1–7% starch, many vitamins, some micro nutrients, and possibly a little sugar. The protein source needed for rearing one worker bee from larval to adult stage requires approximately 120 to 145 mg of pollen.
Where the same plants have non-bee pollinators such as birds or other insects like flies, these are also indicated. Pollination by insects is called entomophily. Entomophily is a form of plant pollination whereby pollen is distributed by insects, particularly bees, Lepidoptera (butterflies and moths), flies and beetles.
Although non-bee pollinators have been seen to be less effective at depositing pollen than bee pollinators [5] one study showed that non-bees made more visits than bees resulting in non-bees performing 38% of visits to crop flowers, outweighing the ineffectiveness of their ability to pollinate. [6] [5]
Bees collect pollen to feed their young, and have the necessary adaptations to do this. However, certain wasp species such as pollen wasps have similar behaviours, and a few species of bee scavenge from carcases to feed their offspring. [30] Solitary bees are important pollinators; they gather pollen to provision their nests with food for their ...
Ptilothrix species are solitary, ground-nesting bees. These bees have especially prominent hairs in the scopae of their hind legs, to help gather pollen to provision their nests. Ptilothrix species specialize on certain families of plants for their pollen, including the families Malvaceae , Convolvulaceae , Onagraceae , Cactaceae ...
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The alkali bee, Nomia melanderi, [1] is a ground-nesting bee native to deserts and semi-arid desert basins of the western United States. It was described by Theodore Dru Alison Cockerell in 1906. While solitary, these bees nest near each other and can form extremely dense aggregations in areas with favorable conditions.
In fruit trees, bees are an essential part of the pollination process for the formation of fruit. [2] Pollination of fruit trees around the world has been highly studied for hundreds of years. [1] Much is known about fruit tree pollination in temperate climates, but much less is known about fruit tree pollination in tropical climates. [1]