Sentences with phrase «bumblebee queens»

So as the days get longer and while the bumblebee queens are hibernating alone (only she overwinters), imagine the buzz, the drone of summer.

«Bumblebee queens that were exposed to the neonicotinoid were 26 per cent less likely to lay eggs to start a colony,» said Raine, holder of the Rebanks Family Chair in Pollinator Conservation.

Researchers collected tree bumblebee queens from the wild, checked them for parasites and then monitored colony development in a laboratory.

«Neonics put bumblebees at risk of extinction by hindering colony formation, study reveals: Exposure to thiamethoxam reduces the chances of a bumblebee queen starting a new colony by more than a quarter.»

This is also important as previous evidence indicates that different neonicotinoids may exert opposing effects on bumblebee queen production and sex ratios of colonies.

Not exact matches

Clint Perry at Queen Mary University of London and his team trained 24 bumblebees to associate two locations in the lab, each of a particular colour, with sugar water or plain water.

Fortunately, Czech bumblebee enthusiast Jaromír Čížek has at last succeeded in getting the bees to breed in captivity, by feeding captive queens exclusively with high - quality bumblebee pollen instead of honeybee pollen, as had previously been attempted.

They examined common wasps, desert ants and buff - tailed bumblebees, and found that all the queens made large quantities of similar long - chained hydrocarbons.

The study, published in the Journal of Animal Ecology, shows that tree bumblebees have rapidly spread despite them carrying high levels of an infection that normally prevents queen bees from producing colonies.

The researchers examined the impacts of exposing queen bumblebees to thiamethoxam during the spring when they emerge from hibernation and are preparing to lay their first eggs and establish a colony.

Neonicotinoid pesticides hinder wild queen bumblebee's reproductive success, according to a new University of Guelph study.

The study is the first to link exposure to thiamethoxam — one of the most commonly used neonicotinoid pesticides — to fewer fully developed eggs in queens from four wild bumblebee species that forage in farmland.

«Given the vital role spring queens have in maintaining bumblebee populations, we decided to focus on assessing the impacts at this stage in the life cycle,» said Raine, a professor in the School of Environmental Sciences.

«These spring queens represent the next generation of bumblebee colonies.»

Bumblebees can learn to pull strings for food and pass on the ability to a colony, according to researchers at Queen Mary University of London (QMUL).

The researchers examined the impacts of exposing the queen bumblebees to thiamethoxam in spring when they emerge from hibernation and are preparing to lay their first eggs and establish a colony.

The queen bees of the spectacular native «giant bumblebee» of South America, Bombus dahlbomii, are the largest bumblebees in the world.

Dr Dino McMahon, from Queen's University, Belfast, said: «Our findings are important because they indicate that many viruses can spread easily between pollinator species and, furthermore, that they can reach very high disease levels in wild bumblebees.»

The research identified five viruses — black queen cell virus, deformed wing virus, acute bee paralysis virus, slow bee paralysis virus and sacbrood virus (all named for their effects in honeybees) from wild bumblebees and managed honeybees at 26 sites across Great Britain.

Most bumblebees do not live in isolation, but in colonies of tens to hundreds of related individuals founded each year by a single queen bee after the winter's hibernation.