Articles with the keyword: 


Colony collapse harms bees but not agriculture ...at least not yet.
Darkfrog submitted, created time 1 month 4 days (www.nature.com)
Colony collapse disorder might be messing with bees and other insects like there's no tomorrow, but nevertheless, a new day dawns for human agriculture. It seems that we don't need them quite as much as we thought.
A study out of UC Berkeley mines data from the United Nations' Food and Agriculture Organization from 1961 to 2006 and compared the yields of both pollinator-dependant and non-pollinator-dependant crops. They found that in developing countries and developed, crop yields were still going up. In the tropics, there was no difference between seed- and wind-pollinated crops 


Researchers discover that growing up too fast may mean dying young in honey bees
sea-maid submitted, created time 1 month 3 weeks (www.biologynews.net)
Reactive oxygen species (ROS) occur as a by-product of aerobic metabolism and impair cellular function by damaging proteins, nucleotides and lipids. Organisms possess a variety of anti-oxidant mechanisms to mitigate the effects of ROS, and the oxidative stress model of aging and senescence suggests that physiological performance declines with age due to lifetime accrual of ROS-induced damage and progressively limited anti-oxidant capacity 


Eusocial insects could have started with monogamous pairs
Darkfrog submitted, created time 5 months 3 weeks (sciencenow.sciencemag.org)
After reading all those depressing articles about how even monogamous species like swans and wolves cheat on their partners, this one was a bit refreshing. The authors posit that monogamy might be the foundation of cooperative species, at least in the beginning. These findings support the idea that cooperative insects group together because of the chance to let a sister pass on her genes and less because of straight survival. 


Insulin signaling is involved in the regulation of worker division of labor in honey bee colonies
davidd submitted, created time 8 months 3 days (www.pnas.org)
There a age-related division of labor in honey bee colonies, a highly derived behavioral system, involves the performance of different feeding-related tasks by different groups of individuals. Older bees acquire the colony's food by foraging for nectar and pollen, and the younger "nurse" bees feed larvae processed foods. 
Queen Bees Control Sex of Young After All
Eric wu submitted, created time 1 year 6 days (sciencenow.sciencemag.org)
Royalty has its privileges, even in the insect world. Queen honey bees can choose the sex of their offspring, a new study shows. Like a sharp stinger, that finding pokes a hole in the notion that queens are merely mindless egg layers and that worker bees have the final say on whether the queen lays eggs that give rise to males or females. 
Disappearing Bee Mystery Deepens
wugongliang submitted, created time 1 year 2 weeks (sciencenow.sciencemag.org)
A virus linked to the strange disappearance of honeybees did not arrive in the United States via recently imported Australian hives, according to a new genetic analysis. Instead, the virus has been present here since at least 2001. "On the face of it, it seems to let the Australians off the hook," says entomologist Nicholas Calderone of Cornell University. But he and others stress that much remains to be learned before the role of the virus in colony collapse is clear. 
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