When it comes to invasive species in the United Kingdom, a few ounces of hot water may be worth nearly £2 billion in annual management costs, according to a new study. Hardy enough on their own, invasive, aquatic species like the killer shrimp and zebra mussel have also had help spreading into various watersheds from the country’s anglers and canoeists, hitchhiking along on their nets, waders, and other water equipment. Now, new research, published in Biological Invasions, has found that dunking that equipment after use in hot water for 15 minutes could help prevent the invaders from catching a lift. Researchers placed four species of nonnative plants—curly water thyme, New Zealand pigmyweed, floating pennywort, and parrot’s feather—and three species of nonnative animals—zebra mussels, killer shrimp, and bloody red mysid—in angling nets. They then tested the effectiveness of four treatments on mortality rates: hot water (about 45°C) only, hot water and drying, drying only, and a control group. Hot water baths, they found, were extremely effective in dealing with the unwanted species. In fact, all plant and animal species were dead within 1 hour of treatment, except for the New Zealand pigmyweed, which had 90% mortality for the same conditions. The hot water and drying method showed similar results. It took about 7 days, however, for the air-dried nets to reach comparable mortality rates, and in the control group, where the nets remained damp, all the species except for the bloody red mysid survived for a little more than 2 weeks. Previous research has shown that about 64% of anglers and nearly 80% of canoeists visit more than one watershed in a 2-week period. Only a fraction of them clean their equipment in between, leaving plenty of opportunity for accidental transfers, scientists say.
GLENDALE, AZ — Kevin Kolb hit LaRod Stephens-Howling on a 52-yardtouchdown pass in the first possession of overtime to lift the ArizonaCardinals to a 19-13 win over the Dallas Cowboys at University ofPhoenixStadium.The Cardinals won the coin toss and got the ball first in overtime. On2nd down and 19, Kolb threw an incomplete pass intended for AndreRoberts, which would have brought up a third and long, but Dallascornerback Terrence Newman was called for pass interference, givingArizona a first down at their own 34. What an MLB source said about the D-backs’ trade haul for Greinke Cardinals expect improving Murphy to contribute right away Top Stories Nevada officials reach out to D-backs on potential relocation D-backs president Derrick Hall: Franchise ‘still focused on Arizona’ Three plays later, Kolb hit Stephens-Howling out of the backfield, andthe diminutive runner did the rest, giving the Cardinals their second-straight 19-13 overtime win in Glendale. Arizona beat the St. LouisRams by the same margin on November 6th when Patrick Petersonreturned a punt 99 yards for a score in overtime.The win is the fourth in the last five contests for Arizona, and improvestheir record to 5-7, while Dallas fall to 7-5.They did what? With :07 remaining in the fourth quarter,Dallas’ Dan Bailey lined up for the potential game-winning 49-yard fieldgoal. As Bailey approached the ball, Dallas head coach Jason Garrettcalled a timeout. The kick sailed through the uprights, all for naught, as the play had beenwhistled dead by Garrett’s decision. After the timeout, Bailey missed the49-yarder short, and we were headed to overtime.They said it – “I’m glad they iced the kicker there at the end soI didn’t have to do it.” — Cardinals head coach Ken Whisenhunt.Kolb’s return – Kevin Kolb returned to the field on Sunday forArizona after missing the last four games with a turf toe injury. For theday Kolb completed 16 of 25 for 247 yards and a touchdown in hissecond win as a starter. But Kolb improved mightily in the 2nd half, completing 9 of 14 for 203yards and the winning score. “With four weeks off, the game was pretty fast in that first half,” Kolbsaid. “I think the coach did a good job on the first play of the secondhalf, they got me on a bootleg, get you sweating, get you movingaround.“For my own mind, it just flipped everything and I really felt a lot morecomfortable.” 0 Comments Share