- Lewandowski treble powers Liga leaders Barca to Alaves victory
- Russian activist killed on front line in Ukraine
- Openda strike briefly sends Leipzig top of Bundesliga
- Goal-shy Man Utd have to 'step up', says Ten Hag
- India bowl out Bangladesh for 127 in T20 opener
- Madueke rescues Chelsea in draw with 10-man Forest
- Beckett's belief rewarded as Bluestocking storms to Arc glory
- Trump on the stump, Harris hits airwaves in razor-edge US election
- Flash flooding kills three in northern Thailand
- Kaur leads India to victory over Pakistan in Women's T20 World Cup
- Juventus held by Cagliari after late penalty drama
- In France's Marseille, teen 'stabbed 50 times' then burned alive
- Ruthless Gauff beats Muchova in straight sets to win China Open
- India restrict Pakistan to 105-8 in Women's T20 World Cup
- England target repeat of Pakistan Test whitewash
- Penrith Panthers win fourth straight NRL title after downing Storm
- Weary Sinner happy for day off after battling into Shanghai last 16
- Pakistan's Masood warns England still a force without Stokes
- Madrid's Carvajal to miss several months after serious knee injury
- Israel pounds Lebanon ahead of Hamas attack anniversary
- Two elephants die in flash flooding in northern Thailand
- Sabalenka targets world number one and Wuhan hat-trick
- Toddler among 4 dead in migrant Channel crossings
- Tunisia votes with Saied set for re-election
- Bagnaia sets 'example' with Japan MotoGP win to cut gap on Martin
- Intense Israeli bombing rocks Beirut ahead of war anniversary
- Mozambique vote: no suspense but some disillusion
- Austrian rapper channels anti-racist rage in Romani hip-hop songs
- Ohtani magic powers Dodgers over Padres in MLB playoff thriller
- Five of the best: Pakistan-England Test thrillers
- Man sets arm on fire as marches across US mark Gaza war anniversary
- Vietnam's young coffee entrepreneurs brew up a revolution
- Trump rallies at site of failed assassination: 'Never quit'
- Too hot by day, Dubai's floodlit beaches are packed at night
- Is music finally reckoning with #MeToo?
- Fans hail Trump's 'guts' as he returns to site of rally shooting
- Lebanon state media says 'very violent' Israeli strikes hit south Beirut
- Guardians maul Tigers, miracle Mets rally in MLB series openers
- Lebanon state media says Israeli strikes hit south Beirut
- Miami on track for MLS record points after win in Toronto
- Madrid beat Villarreal but Carvajal suffers knee injury
- Madrid beat Villarreal to move level with Liga leaders Barcelona
- Monaco take top spot in Ligue 1 with win at Rennes
- French rugby player on rape charge whistled but 'serene' on return
- Madrid beat Villarreal to level Liga leaders Barca
- Thuram treble fires Inter past Torino and up to second
- 'Fight': defiant Trump jets in to site of rally shooting
- Toddler among 3 dead in migrant Channel crossings
- Mexico City's new mayor sworn in with pledges on water, housing
- Israel on alert ahead of Hamas attack anniversary
Queen bumblebees surprise scientists by surviving underwater
Bumblebees can surprisingly withstand days underwater, according to a study published Wednesday, suggesting they could withstand increased floods brought on by climate change that threaten their winter hibernation burrows.
The survival of these pollinators that are crucial to ecosystems is "encouraging" amid worrying global trends of their declining populations, the study's lead author Sabrina Rondeau told AFP.
With global warming prompting more frequent and extreme floods in regions around the world, it poses "an unpredictable challenge for soil-dwelling species, particularly bees nesting or overwintering underground", co-author Nigel Raine of the University of Guelph said in a statement.
Rondeau said she first discovered queen bumblebees could withstand drowning by accident.
She had been studying the effect of pesticide residues in soil on queen bumblebees that burrow underground for the winter when water accidentally entered the tubes housing a few of the bees.
"I freaked out," said Rondeau, who had been conducting the experiment for her doctoral studies. "It was only a small proportion... so it was not that big of a deal, but I didn't want to lose those bees."
To her "shock", she said, they survived.
"I've been studying bumblebees for a very long time. I've talked about it to a lot of people and no one knew that this was a possibility," she said.
She launched another experiment to better understand what happened.
Researchers placed 143 hibernating queen bumblebees in tubes -- some with no water as a comparative group, some floating in water and some fully submerged using a plunger for a period ranging from eight hours to seven days, according to the study published in the journal Biology Letters.
Remarkably, 81 percent of the hibernating queens that were submerged not only survived seven days, but once returned to dry conditions remained alive eight weeks later.
The long-term impact on the bees' health and the effects it could have on a colony still needs further research, Rondeau noted.
The common eastern bumblebees used in the study are found in North America and are particularly hardy, not showing the same degree of population declines as other bee species, she said.
"So we are also wondering whether this resistance to flooding can be part of why they're doing so well," said Rondeau, now a postdoctoral fellow at the University of Ottawa.
The study would have to be replicated on other species of bumblebees to determine how common the trait is.
"But it's encouraging to know that at least (flooding) is not another big threat that we have to consider," she said.
F.Bennett--AMWN