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2025-06-02 18:32:15
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In regions of the United States and Mexico that are prone to hurricanes, aggressive spiders are evolving to survive and ride out the storm.When hurricanes rage along the Gulf of Mexico or charge up the East Coast, they can reshape an entire habitat in a short time. The winds destroy trees and spread debris for miles, putting new pressure on the creatures living in these environments.But how do creatures adapt when their habitats are so disturbed? Researchers looked at Anelosimus studiosus spiders that live in storm-prone areas along the coast to see how they changed. Their study was published Monday in the journal Nature Ecology and Evolution.These weather systems are called "black swan events": a surprising event with a major impact that is explained with the benefit of hindsight. They don't offer much lead time, so the researchers had to scramble to study the spider colonies before and after projected storms.The team monitored Subtropical Storm Alberto and Hurricanes Florence and Michael during the 2018 hurricane season. They tried to anticipate the systems' trajectories and study areas that included 240 female spider colonies, comparing them with areas where spider colonies were unaffected by such storms.The researchers returned to the sites hit by the storms 48 hours later. About 75% of the colonies survived the initial storm strikes."It is tremendously important to understand the environmental impacts of these 'black swan' weather events on evolution and natural selection," said Jonathan Pruitt, lead study author, evolutionary biologist and Canada 150 Chair in McMaster University's Department of Psychology, Neuroscience & Behaviour. "As sea levels rise, the incidence of tropical storms will only increase. Now more than ever we need to contend with what the ecological and evolutionary impacts of these storms will be for non-human animals."The A. studiosis spider species has two main personality traits that are inherited: docile and aggressive.Aggressiveness can be determined based on their speed, attackers pursuing prey, cannibalizing male spiders as well as eggs and their vulnerability to the invasion of predatory spiders.On the one hand, aggressive colonies are better at gathering resources in times of scarcity. But when deprived of food or subjected to overheating, aggressive colonies can also suffer from infighting."Tropical cyclones likely impact both of these stressors by altering the numbers of flying prey and increasing sun exposure from a more open canopy layer," Pruitt said. "Aggressiveness is passed down through generations in these colonies, from parent to daughter, and is a major factor in their survival and ability to reproduce."The researchers determined that after a storm passed, the colonies that aggressively pursued food and resources were able to produce more egg cases. The spiderlings also had a better chance of surviving into early winter.In areas that weren't hit by storms, docile colonies thrived.These findings were consistent even as the storms varied in duration, intensity and size. The researchers believe this shows that extreme events can shape animal behaviors. They would like to conduct more long-term studies to learn whether this is the case. 3250

  濮阳东方医院男科几路车   

Lava lamps may be fun reminders of the 1970s, but these days, some are being used to help keep data secure.Nick Sullivan with a tech firm called Cloudflare shows a wall of lava lamps that are part cryptography. The wall is 235

  濮阳东方医院男科几路车   

Iran's Foreign Minster Javad Zarif said that his nation does not "seek escalation or war" following an attack on a pair of Iraqi bases that house US troops early Wednesday morning. Iraqi security officials told CNN that no casualties were reported following the attacks on Al-Asad Airbase and Irbil Airbase in Iraq, where United States troops are stationed. "Iran took & concluded proportionate measures in self-defense under Article 51 of UN Charter targeting base from which cowardly armed attack against our citizens & senior officials were launched," Zarif said. "We do not seek escalation or war, but will defend ourselves against any aggression."Hours after Zarif's statement, Iranian State TV reported that Iran will tell the UN Security Council it will not seek to go to war with the U.S.More than a dozen missiles struck two airbases in Iraq that houses U.S. troops early on Wednesday morning, the Pentagon confirmed.While Zarif said that Iran does not seek to escalate tensions in the Middle East, the Islamic Revolutionary Guard Corps (IRGC) said through Iran State TV that the United States would face a broader and stronger response if the US responded to the Iranian missile attack.Zarif has been vocal in his criticism of the U.S., especially President Donald Trump, after the U.S. launched an attack that killed Iranian General Qasem Soleimani last week. "The US' act of international terrorism, targeting & assassinating General Soleimani—THE most effective force fighting Daesh (ISIS), Al Nusrah, Al Qaeda et al—is extremely dangerous & a foolish escalation. The US bears responsibility for all consequences of its rogue adventurism," Zarif previously said. 1703

  

Iran's Foreign Minster Javad Zarif said that his nation does not "seek escalation or war" following an attack on a pair of Iraqi bases that house US troops early Wednesday morning. Iraqi security officials told CNN that no casualties were reported following the attacks on Al-Asad Airbase and Irbil Airbase in Iraq, where United States troops are stationed. "Iran took & concluded proportionate measures in self-defense under Article 51 of UN Charter targeting base from which cowardly armed attack against our citizens & senior officials were launched," Zarif said. "We do not seek escalation or war, but will defend ourselves against any aggression."Hours after Zarif's statement, Iranian State TV reported that Iran will tell the UN Security Council it will not seek to go to war with the U.S.More than a dozen missiles struck two airbases in Iraq that houses U.S. troops early on Wednesday morning, the Pentagon confirmed.While Zarif said that Iran does not seek to escalate tensions in the Middle East, the Islamic Revolutionary Guard Corps (IRGC) said through Iran State TV that the United States would face a broader and stronger response if the US responded to the Iranian missile attack.Zarif has been vocal in his criticism of the U.S., especially President Donald Trump, after the U.S. launched an attack that killed Iranian General Qasem Soleimani last week. "The US' act of international terrorism, targeting & assassinating General Soleimani—THE most effective force fighting Daesh (ISIS), Al Nusrah, Al Qaeda et al—is extremely dangerous & a foolish escalation. The US bears responsibility for all consequences of its rogue adventurism," Zarif previously said. 1703

  

It's no secret that fewer people are buying bras, panties and other intimate apparel at Victoria's Secret. The company's sales have been sliding for a while, and one Wall Street analyst thinks time may be running out for the retailer's parent company, L Brands, to fix it.Citigroup analyst Paul Lejuez downgraded shares of L Brands Monday from a "buy" to a "neutral" rating and slashed his price target from a share to , citing concerns that management is "slow to implement meaningful change" with "cultural norms shifting away" from the company.Victoria's Secret has 588

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