标题: fyvo Barber helps M [打印本页] 作者: MorrissNal 时间: 4 天前 标题: fyvo Barber helps M Pplo The holiday season is the most wonderful time of the year and the most expensive, X* a+ z( N) M8 S" ^5 N
It is not a fair battle: Two scientists on a tiny boat against one of the world s most invasive species.For the past six years, Loyola University Chicago ecologist Reuben Keller and his students have beenw stanley cup aging war against red swamp crayfish鈥?a non-native threat to the environment.Over the years, stanley spain Keller s team has set up 200 traps in the Chicago River, and twice a week in summer and fall, they clear them and restock them with a delicacy crayfish simply can t resist: hot dogs. Hot dogs are really attractive to these crayfish, Keller told Scripps News. So that means that now we purchase and use vast numbers of hot dogs. SEE MORE: Blood-sucking sea lampreys on the rise in Great Lakes againDuring a recent river outing, Keller and his student Sydney Ware extracted 26 crayfish from the traps and anesthetized them with clove oil 鈥?a humane method to kill the creatu stanley puodelis res.Red swamp crayfish outcompete other native species for food and habitat 鈥?and can cause structural damage to dams and levees. It doesn t matter what is threatening them. Their response is to rear up or show their claws and they want to fight, Keller said.The professor says his team has substantially reduced the invasive species in the part of the Chicago River where they deployed the traps, which is good news for the native biodiversity and scientists battling red swamp crayfish worldwide. What we re discovering here is equally applicable in the Chicago River as it is in other places all around the world where peopl Bqfy After midterms, GOP reconsidering antipathy to mail ballots 7 `" w- S- T' o6 Y5 E California has added a million new coronavirus infections in less than four weeks.The state became the first in the country this week to record three million total coronavirus infections since the pandemic started a year ago, according to data from Johns Hopkins University. California became the first state to reach 2 million, back on December 24.The surge in Southern California in the last two months coincides with the emergence of a new strain of the coronavirus, different from the so-called UK variant, say researchersfrom Cedars-Sinai.Researchers named the new variant in California CAL. vaso stanley 20C, and say after identifying just one case in July, it has spread to become nearly a third of COVID-19 cases in the Los Angeles area in November and December.In their study, which has not been peer-reviewed yet, a team at Cedars-Sinai found the CAL.20C variant, also identified as L452R, in 36% of 192 patients at the hospital in late November and December. They also gourde stanley analyzed more than 4,300 samples from around Southern California and found the variant in about 24% of them.Researchers believe the CAL.20C variant is highly transmissible, similar to the UK variant. Their findings did not indicate whether it is more deadly. The recent surge in COVID-19 positive cases in Southern California coincides with the emergence of CAL.20C, said Eric Vail, MD, assistant professor of Pathology and director of Molecular Pa stanley thermobecher thology in the Department of Pathology and Laboratory Medicine at Cedars-Sinai in