nectar 2 1

Tag: "nectar" at biology news

Amino acids in nectar enhance butterfly fecundity: A long awaited link

...ed intriguing mechanisms and attractants, of which nectar is best known. Thirty years ago, researchers disc...ings led to speculations about the significance of nectar amino acids for butterfly fitness and insinuated that butterflies have acted as agents of natural se...

Bees solve complex colour puzzles

... artificial flowers of a particular colour using a nectar reward. They then tested the bees' ability to find the same flowers in scenes that were simultaneously illuminated by four differently coloured lights - UV-yellow, blue, yellow and green. To solve this puzzle, the bees had to effectively segment the ...

Primates harvest bee nests in Ugandan reserve

...n the New World, documenting effects of pollen and nectar collecting and nesting ecology on native-American stingless bees. Kajobe invited Roubik to visit the Bwindi-Impenetrable National Park in southwestern Uganda, where African honeybees coexist with five or more species of honey-making stingless bees i...

ASU researchers find link between social behavior, maternal traits in bees

...nding the hive, raising the young and foraging for nectar and pollen. Other species of bees, like carpenter... were associated with bees that foraged mostly for nectar (the low pollen-hoarding strain). Using that as a foundation, Amdam and Page hypothesized that that...

Bumble bees can estimate time intervals

...apsed durations. Insect pollinators feed on floral nectar that depletes and renews with the passage of time,...s' ability to time the interval between successive nectar rewards. Using a specially designed chamber in which bumble bees extended their proboscis to obtain ...

Honey bee genome holds clues to social behavior

...or eggs and larvae, and then shift to foraging for nectar and pollen as they age. However, if the hive has a shortage of foragers, some of the young nurse bees will switch jobs and become foragers. The job transition, whether triggered by age or social cues, involves changes in thousands of genes in the h...

Rearing an army to save wheat

...rch explored whether supplemental food provided as nectar from flowering plants or as honey water increases the number of parasitic wasps produced in each cage. Another part of his thesis project examined whether using special ultraviolet and visible light-transmitting windows increases the number of parasi...

Honeydew honeys are better antioxidants than nectar honeys

... key types of source. First, honeybees can collect nectar from flowers, and this generates nectar honeys. Secondly they can collect fluids that exude from plants, usually after the plants have been ...

Detecting poisons in nectar is an odour-ous task for honeybees

...e world’s crop plants, may encounter such poisoned nectar in common crop and garden plants such as Rhododend...rons and almond trees. Can honeybees learn whether nectar contains toxins, and does this influence their ability as pollinators? Dr Geraldine Wright (Newcastl...

The kapok connection -- Study explains rainforest similarities

...py. Its flowers produce more than 50 gallons of nectar per tree in a season, attracting bats that travel as far as 12 miles between trees and transfer pollen in the process. When the seed pods ripen, they break open to reveal fluffy fibers that are used to stuff pillows and mattresses. The seeds, which a...

Columbine flowers develop long nectar spurs in response to pollinators

...wers called columbines, evolution of the length of nectar spurs--the long tubes leading to plants' nectar--h...ction might account for the evolution of very long nectar spurs in flowers, said Hodges. "In Darwin's race, plants with the longest spurs and pollinators with...

1