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Honeybees

Goldenrod Crucial To Honeybee Survival

8-13  honeybee and goldenrod 028Goldenrod is one of the most important flowering plants for honeybees because it is a prolific producer of nectar and pollen late in the year. Blooming in the late summer and fall, this bright yellow-flowered composite provides nectar for the bees to build up stores of honey for winter. (Goldenrod honey is dark amber and strong tasting.) Goldenrod also provides pollen to help stimulate the colony to produce brood late into the fall. The pollen adds considerable amounts of protein, fats, and minerals to the diet of the late-season bees, helping ensure that they will have food throughout the winter.

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Sacrificial Honeybee Drones

6-26-15 drone 039A honeybee colony has one (fertile, egg-laying) queen, several hundred male drones and thousands of (sterile) female worker bees. The drone’s one and only function is to mate with and fertilize a queen. (They do no work in the hive, and are fed by workers until fall.) Early in a queen’s life, she makes several mating, or nuptial, flights. On these flights, she mates — in midair about 200-300 feet high — with anywhere from one to more than 40 drones. They are usually not from the queen’s hive, but may be from several other hives. The average number of drones with which a queen mates is 12. The queen stores up to six million sperm from her mating flights, and retains them for the remainder of her life — two to three years, for a long-lived queen. (Recent research shows that the more times a queen mates, the more attractive she is to her worker bees, due to pheromone alterations, and thus, the longer she lives before being replaced.)

While the queen may live several years after mating, the few drones that manage to partner with her do not, for they die after mating. Although brief, honeybee mating is dramatic. The drone inserts his endophallus (internal penis) into the queen’s sting chamber and with great force injects his sperm into her. The force with which this is done is so powerful that it ruptures the endophallus, separating the drone from the queen. The drone dies shortly thereafter. (At this time of year, honeybee hives often swarm due to overcrowding, with the old queen departing with half of the hive; a new, virgin queen then takes her nuptial flights.) Photo: A drone honeybee which lost its life after successfully mating with a queen. Discovered and photographed by Boston Beekeeper Association founder, Sadie Richards Brown.

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Exposed Honeybee Colony

honeycomb IMG_5036In the Northeast, honeybees typically choose a protected site such as a hollow tree in which to build their hive. Harsh winters demand this protection. Infrequently you will see where an attempt has been made to survive the elements without anything to contain the heat that the honeybees produce by shivering, or to block the wind, snow or sleet. Inevitably, this far north, the colony does not survive the winter.

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New England Aster Providing Bees with Late Season Nectar & Pollen

10-13-14 new england aster & bumblebee 356At a time of year when nectar and pollen sources are few and far between, New England Aster provides many species of bees with food. This composite seems designed specifically for easy pollination. Its open, wide flower shape provides a flat surface for insects to land on, and because the nectar and pollen are not hidden deep inside the flowers, both long- and short-tongue bee species can easily access them. Unlike honeybees, bumblebees do not have a large store of honey in their nests, so they need pollen and nectar throughout the season. Thus, the few flowers such as New England Aster that blossom as late as October are visited frequently and in large numbers. (Only the queen bumblebee overwinters, but the workers continue collecting nectar and pollen up until they die in late fall.)

New England Aster flowers close at night, when there are fewer pollinating insects flying. If an unusually cool period arrives during the time when New England Aster is blooming, the blossoms also close. Although it may seem that the aster is losing pollination opportunities during a cold day, bees are not very active in cool weather.

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Viper’s Bugloss Flowering

7-9-14 viper's bugloss093Even if it weren’t such a beautiful and vibrantly-colored flower, Viper’s Bugloss, Echium vulgare, would be notable just for its name. “Bugloss” is of Greek origin, from a word signifying an ox’s tongue, and alludes to the roughness and shape of the plant’s leaves. Some say the dead flower-head and/or seed resemble a snake, and in the 1600’s this plant provided a popular cure for snake bites. A long-flowering (all summer and into the fall) member of the Boraginaceae family, Viper’s Bugloss is particularly popular with bees. It produces nectar throughout the day, unlike most plants which produce nectar for a short period of time. With an unlimited supply of Viper’s Bugloss, honeybees can collect between 12 and 20 pounds of nectar a day.

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Honeybee Scavenger

2-10-14 chickadee & bee33 174If the weather warms up sufficiently in January or February, honeybees take advantage of it and use this opportunity to leave their hive to rid themselves of waste that they have accumulated since their last flight and to remove the bodies of dead honeybees. They don’t fly very far before dropping either their waste or their dead comrades on the snow. This ritual is quickly noted and taken advantage of by animals that are not hive dwellers and need constant fuel in order to survive the cold. Black-capped chickadees are one of these animals – the chickadee in this photograph repeatedly landed on the hive body, and if a dead bee was available at the hive entrance, the chickadee helped itself to it. Otherwise it would survey the snow in front of the hive and then dart down to scoop up a bee in its beak before flying off to a branch to consume its nutritious meal. (Note dead bees at the hive opening, awaiting being taken on their final flight. Screening keeps mice out, but allows bee to enter and exit.) Thanks to Chiho Kaneko and Jeffrey Hamelman for photo op.

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Chicory Pollinators

7-19-13 chicory pollenTwenty minutes of observing air-borne visitors to a patch of roadside Chicory revealed nine different species of pollinators, including bees, flies and beetles. Most of the insects were bees, which makes sense, as honeybees, leafcutting bees and ground-nesting bees are the primary pollinators of this flower. Without exception, all of the pollinating insects were covered from head to toe with Chicory’s white pollen grains. As they circled the flowers’ stamens collecting pollen, the insects’ bodies were inadvertently dusted with some of it. Thanks to these diligent pollen-collectors and transporters, American Goldfinches and other seed-eating birds will be feeding on Chicory seeds come winter. (Electron microscopy by Igor Siwanowic and Scienceworks.)


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