Sentences with phrase «wild bee populations»

While CCD doesn't only impact honey bees, they do seem to be getting hit harder than some wild bee populations.

Based on our model, and our observations near greenhouses, it is probable that destructive pathogens have been spilling over into wild bee populations since the collapse of commercial B. occidentalis during the late 1990s, and this has contributed to the ongoing collapse of wild Bombus sensu stricto.

The puzzling finding comes on the heels of other studies linking fungicides to declines in honey bee and wild bee populations.

«These chemicals do have serious implications for wild bee populations in agricultural landscapes but some, notably from the agrochemical industry, still promote their use,» Dr Whitehorn warns.

But a new computer model shows that wild bee populations are declining in many agricultural areas.

Wild bee populations in parts of the United States are declining, largely due to habitat loss in areas with intense farming.

The scientists found that wild bee populations declined in 23 percent of the contiguous United States.

Not exact matches

Researchers at the University of York mapped population data for 62 wild bee species sprinkled across the United Kingdom along with neonicotinoid treatment in local oilseed rape (Brassica napus) fields over 18 years.

That goes for both wild bees that forage on oilseed rape, and those that don't — though populations of known foragers were three times as likely to disappear.

According to recent studies, declines in wild and managed bee populations threaten the pollination of flowers in more than 85 percent of flowering plants and 75 percent of agricultural crops worldwide.

The task force had called on USDA to monitor populations of native and wild bees, not just managed honey bees.

As colony collapse disorder and other maladies continue to devastate honeybee populations, researchers are turning their attention to alternative pollinators — the thousands of native bee species throughout the country — and are looking for ways to make croplands more attractive to these wild bees.

Dropping populations of wild bees in agricultural areas could affect crop pollination and result in higher costs for farmers, researchers report December 21 in the Proceedings of the National Academy of Sciences.

«They also indicate a temporal connection between historical infections in wild bumble bee populations and the late 1990s Nosema - induced collapse of commercial production of Bombus occidentalis in North America.»

«These associations support the hypothesis that Nosema escaped into wild populations from heavily infected commercial colonies, at least during the earlier years of bumble bee domestication in the U.S.,» she said.

The coincidence of N. bombi infections and losses of bumblebees in wild and commercial populations suggests the fungus is a key player in bumble bee declines, Cameron said.

Scientists hoping to explain widespread declines in wild bumble bee populations have conducted the first long - term genetic study of Nosema bombi, a key fungal pathogen of honey bees and bumble bees.

This flexibility could help bumble bees in the wild, which face widespread population declines.

As global populations of domestic bee pollinators decline, it is of utmost importance for us to understand what factors attract wild pollinators such as hoverflies to flowers, and how these preferences differ in the face of environmental change.

As global populations of domestic bee pollinators decline, it is of utmost importance for us to understand the factors that attract wild pollinators such as hoverflies to flowers, and how these preferences differ in the face of environmental change.

The evidence against neonicotinoids now exists in key bee brain cells involved in learning and memory, in whole bees, entire colonies and now at the level of whole populations of wild bees.

Unfortunately, it is still not widely recognized that wild populations of many native bees are also in danger of collapse.

We also monitored wild bumble bee populations near greenhouses for evidence of pathogen spillover, and compared the fit of our model to patterns of C. bombi infection observed in the field.

If any thing else urbanization probably increases the cat population by a little along with huge increases n pollution, traffic, buildings, boys with bee bee guns, pesticides, Urbanization also has the nasty side effect of decreasing natural resources for all species of wild life including birds.

St Bees Island has also been the research point for Central Queensland University and University of Queensland who have been investigating the population of wild koalas on the island.

Populations of wild bees and other pollinating species, including butterflies and moths, birds and bats, are being pushed to extinction at startling rates.

The challenge: figuring out how to produce enough of the finicky tunnel - nesting bees without depleting wild populations.

Bee population declines aren't new - we've steadily gone from 6 million captive hives in 1947 to about 2.5 million today - but the rate of decline has never been higher, and the situation is far worse for wild bees, threatening global biodiversity.

The country's bee population had already been shocked in recent years by a tiny, parasitic bug called the varroa mite, which has destroyed more than half of some beekeepers» hives and devastated most wild honeybee populations.