The famous work ethic of honey bees might spell disaster for these busy crop pollinators as the climate warms, new research indicates.
Plants & Animals
Mar 25, 2024
3
75
There are roughly 100 million managed western honey bee (Apis mellifera) colonies in hives worldwide, with about half in Europe, Africa and western Asia, where the species is native, and the rest in the Americas, Oceania ...
Plants & Animals
Mar 5, 2024
0
53
In northeast Colombia, police guard warehouses stacked high with confiscated timber with a noble new destiny: transformation into homes for bees beleaguered by pesticides and climate change.
Ecology
Dec 28, 2023
0
1
Honeybees in man-made hives may have been suffering the cold unnecessarily for over a century because commercial hive designs are based on erroneous science, my new research shows.
Plants & Animals
Nov 27, 2023
0
16
Australia's national parks, botanic gardens, wild places and green spaces are swarming with an invasive pest that is largely flying under the radar. This is yet another form of livestock, escaped from captivity and left to ...
Plants & Animals
Jul 26, 2023
0
3
A nutrient-rich product discovered in honeybee hives across Australia could generate a new homegrown health industry.
Biochemistry
Jul 21, 2023
0
111
A Cornell study that revealed commercial eastern common bumblebee hives pose a threat to their wild counterparts has led one major pollination company to quickly adapt the bumblebee hive boxes they ship to growers.
Ecology
Jul 19, 2023
1
128
Widespread pesticide-use and diminished floral diversity in the environment have contributed to the worsening susceptibility of honeybees to infectious disease, threatening their support of adequate pollination of food crops. ...
Ecology
Jun 28, 2023
0
34
Controlling for Varroa mites, the parasitic mites that feed on honey bees and serve as vectors for viral diseases like deformed wing virus (DWV), can help with improving honeybee populations and make bees less susceptible ...
Plants & Animals
Jun 22, 2023
0
2
While judges, lawyers and support staff at the federal courthouse in Concord, New Hampshire, keep the American justice system buzzing, thousands of humble honeybees on the building's roof are playing their part in a more ...
Ecology
Jun 3, 2023
0
42
Urticaria (from the Latin urtica, nettle (whence It. ortica, Sp. ortiga, Pg. urtiga, Fr. ortie) urere, to burn) (or hives) is a kind of skin rash notable for pale red, raised, itchy bumps. Hives is frequently caused by allergic reactions; however, there are many non-allergic causes. Most cases of hives lasting less than six weeks (acute urticaria) are the result of an allergic trigger. Chronic urticaria (hives lasting longer than six weeks) is rarely due to an allergy. The majority of patients with chronic hives have an unknown (idiopathic) cause. Perhaps as many as 30–40% of patients with chronic idiopathic urticaria will, in fact, have an autoimmune cause. Acute viral infection is another common cause of acute urticaria (viral exanthem). Less common causes of hives include friction, pressure, temperature extremes, exercise, and sunlight.
Weals (raised areas surrounded by a red base) from urticaria can appear anywhere on the surface of the skin. Whether the trigger is allergic or non-allergic, there is a complex release of inflammatory mediators, including histamine from cutaneous mast cells, resulting in fluid leakage from superficial blood vessels. Wheals may be pinpoint in size, or several inches in diameter. Angioedema is a related condition (also from allergic and non-allergic causes), though fluid leakage is from much deeper blood vessels. Individual hives that are painful, last more than 24 hours, or leave a bruise as they heal are more likely to be a more serious condition called urticarial vasculitis. Hives caused by stroking the skin (often linear in appearance) are due to a benign condition called dermographism.
This text uses material from Wikipedia, licensed under CC BY-SA
