Growth of Antarctic and temperate terrestrial Protozoa under fluctuating temperature regimes

first_imgPopulation growth rates of Antarctic and temperate isolates of the microflagellate Heteromita globosa Stein and of the ciliate Colpoda cucullus Müller were determined during incubation both under constant 3.5° and 8.0°C, and under temperature regimes fluctuating on 24-hour cycles, between 0° and 15°C, to simulate Antarctic microclimates. Fluctuating temperatures did not inhibit growth. No growth of Colpoda occurred at 3.5°C. It is suggested that successful growth in nature depends upon the microclimate providing sufficient degree-hours per day above encystment/excystment threshold temperature (+1.5°C for Heteromita about +4°C for Colpoda). The minimum number of degree-hours above threshold needed for growth of Colpoda is estimated to lie between 48 and 96. Monitored microclimates in the maritime Antarctic do not provide enough degree-hours per day, though subantarctic microclimates are more favourable, as may be exceptionally warm localities in the continental Antarctic where daily insolation is high in summer. These data are consistent with the recorded presence of Colpoda spp. in the subantarctic and rarely in the continental Antarctic, and their absence from the maritime Antarctic.last_img read more

Podcast: CUNA builds on advocacy success

first_img continue reading » ShareShareSharePrintMailGooglePinterestDiggRedditStumbleuponDeliciousBufferTumblr As CUNA’s Chief Advocacy Officer Ryan Donovan tells it, advocacy is a process.In 2019, America’s credit unions will build on a process that brought them nearly unprecedented success in 2018. CUNA stood tall for America’s credit unions in 2018 with the passage of S. 2155, the Economic Growth, Regulatory Relief and Consumer Protection Act, as the year’s advocacy highlight.Donovan says 2018’s advocacy results validated CUNA’s 360-degree advocacy approach—a grassroots strategy that fosters engagement from system players at all levels from every direction.As evidence of the success of that grassroots strategy CUNA greets a 116th Congress that, while radically divided by almost every measure, represents what Ryan describes as “credit union majority.”last_img read more

Henderson, Butler lead Syracuse past Jacksonville, 77-61

first_imgJACKSONVILLE, Fla. — April Carson received an inbounds pass and turned quickly to head up the court only for the Jacksonville guard to smack her head into the shoulder of Syracuse guard Diamond Henderson.Henderson, with her arms square and standing straight, drew the charge. Carson couldn’t believe the call, and received a technical foul for yelling “What!” at an official.Syracuse small forward Brianna Butler sank two technical free throws that gave Syracuse a 28-point lead just minutes into the second half.It was that combination of Henderson and Butler that sparked No. 23 SU (3-0) to a 77-61 victory over Jacksonville (1-3) on Saturday in front of 576 at Swisher Gymnasium. Henderson scored 13 of her 14 points in the first half, and Butler finished with 16 points in 18 minutes.“We all just came out with a lot of energy,” Butler said. “Our defense pushed and our offense was able to knock down shots.”AdvertisementThis is placeholder textAll 12 players who dressed for the Orange made an appearance in the first half. Briana Day won an uncontested opening tipoff, and made two layups in an 8-0 SU run to start the game.Syracuse point guard Alexis Peterson diced into the paint with ease, and the SU defense forced four turnovers in the opening two and a half minutes.But after a Jacksonville timeout, the Dolphins went on a run of their own. The home-team fans at Swisher – an arena that sits just a few thousand – rallied when Jacksonville took a 13-11 lead behind five points apiece from Loliya Briggs and Sherranda Reddick.But from there, SU went on a 15-0 run spearheaded by Butler and Henderson. Butler, who is still recovering from a bruised left knee she injured two weeks ago in practice, sank a 3 from the right corner to give the Orange a 14-13 lead – a lead it didn’t relinquish.“Bri shot the ball well. She has to make 3s for us to be effective,” Syracuse head coach Quentin Hillsman said. “She spaced the floor and really helped us get this win tonight.”Henderson scored the team’s next eight points, two free throws followed by two 3 pointers. The Tennessee Tech transfer Henderson hit another 3 at the 7:32 mark of the first half to give the Orange a 31-18 lead.On SU’s next possession, guard Maggie Morrison won a battle on the floor for a loose ball and kicked it out to Henderson. As Henderson rose to shoot, a fan sitting courtside said loudly, “Buckets.”Henderson’s contested pull-up jumper dropped through the net to extend the Orange lead to 33-18.“It reminds you of AAU times and the high school days,” Henderson said. “I always love playing in a small gym. You really get to hear the crowd.”Butler hit another 3 and a jump shot to give SU a 43-21 lead at the half.“My teammates were able to find me and I was just getting in a groove early,” Butler said.But in the second half, Butler played just five minutes. Henderson shot 0-of-6 from the field after sitting on the bench for a 4:41 stretch of the second half.Butler made her last contribution to the blowout with 15:13 left in the game, sinking a pair of free throws to stretch SU’s lead to 53-25. When Henderson left the game with 3:58 left, SU led by 28.SU’s advantage grew to 30 points in the middle of the second half, and the Orange didn’t allow the Dolphins to come within 20 until there was 1:01 was left in the game. By then, Butler and Henderson’s days were done. They had already run the Dolphins off their own court.“We competed to the utmost today,” Henderson said. “We came in, and we didn’t want to be down in the first few minutes like we were (against Fordham and Duquesne). We came out more aggressive tonight.” Comments Published on November 22, 2014 at 9:01 pm Contact Josh: [email protected] Facebook Twitter Google+last_img read more