Postmigratory body condition and ovarian steroid production predict breeding decisions by female gray-headed albatrosses

first_imgCarryover effects have been documented in many migratory bird species, but we know little about the physiological mechanisms that mediate those effects. Here we show that the energetic, endocrine, and aerobic characteristics of postmigratory female gray-headed albatrosses (Thalassarche chrysostoma) can affect their decision to breed. All females in this study, whether breeding or not, were secreting ovarian steroids when they arrived at the breeding colony at Bird Island, South Georgia, which suggests that all were responding to seasonal cues. However, deferring, nonbreeding birds were characterized by a steroid profile of high progesterone (P4) and low testosterone (T), whereas breeding birds showed the opposite pattern. Deferring birds also had low body mass, hematocrit, and hemoglobin. These results suggest that postmigratory condition can influence patterns of ovarian steroidogenesis and that the maintenance of high P4 without subsequent conversion to T favors breeding deferral. Whereas breeding females normally convert P4 to T, which is a key deterministic step toward 17β-estradiol synthesis, vitellogenesis, and follicle development, deferring females did not make this conversion and instead maintained high levels of P4, perhaps due to inhibition of the hydroxylase-lyase enzyme complex, thus rendering them infertile for the current season. Results are discussed within the context of the biennial breeding system of this species, and comparisons with other biennially and annually breeding albatrosses are made.last_img read more

A marine biodiversity observation network for genetic monitoring of hard-bottom communities (ARMS-MBON)

first_imgMarine hard-bottom communities are undergoing severe change under the influence of multiple drivers, notably climate change, extraction of natural resources, pollution and eutrophication, habitat degradation, and invasive species. Monitoring marine biodiversity in such habitats is, however, challenging as it typically involves expensive, non-standardized, and often destructive sampling methods that limit its scalability. Differences in monitoring approaches furthermore hinders inter-comparison among monitoring programs. Here, we announce a Marine Biodiversity Observation Network (MBON) consisting of Autonomous Reef Monitoring Structures (ARMS) with the aim to assess the status and changes in benthic fauna with genomic-based methods, notably DNA metabarcoding, in combination with image-based identifications. This article presents the results of a 30-month pilot phase in which we established an operational and geographically expansive ARMS-MBON. The network currently consists of 20 observatories distributed across European coastal waters and the polar regions, in which 134 ARMS have been deployed to date. Sampling takes place annually, either as short-term deployments during the summer or as long-term deployments starting in spring. The pilot phase was used to establish a common set of standards for field sampling, genetic analysis, data management, and legal compliance, which are presented here. We also tested the potential of ARMS for combining genetic and image-based identification methods in comparative studies of benthic diversity, as well as for detecting non-indigenous species. Results show that ARMS are suitable for monitoring hard-bottom environments as they provide genetic data that can be continuously enriched, re-analyzed, and integrated with conventional data to document benthic community composition and detect non-indigenous species. Finally, we provide guidelines to expand the network and present a sustainability plan as part of the European Marine Biological Resource Centre ( read more

Transcriptional frontloading contributes to cross‐tolerance between stressors

first_imgThe adaptive value of phenotypic plasticity for performance under single stressors is well documented. However, plasticity may only truly be adaptive in the natural multifactorial environment if it confers resilience to stressors of a different nature, a phenomenon known as cross‐tolerance. An understanding of the mechanistic basis of cross‐tolerance is essential to aid prediction of species resilience to future environmental change. Here, we identified mechanisms underpinning cross‐tolerance between two stressors predicted to increasingly challenge aquatic ecosystems under climate change, chronic warming and hypoxia, in an ecologically‐important aquatic invertebrate. Warm acclimation improved hypoxic performance through an adaptive hypometabolic strategy and changes in the expression of hundreds of genes that are important in the response to hypoxia. These ‘frontloaded’ genes showed a reduced reaction to hypoxia in the warm acclimated compared to the cold acclimated group. Frontloaded genes included stress indicators, immune response and protein synthesis genes that are protective at the cellular level. We conclude that increased constitutive gene expression as a result of warm acclimation reduced the requirement for inducible stress responses to hypoxia. We propose that transcriptional frontloading contributes to cross‐tolerance between stressors and may promote fitness of organisms in environments increasingly challenged by multiple anthropogenic threats.last_img read more

Cleveland Browns linebacker Mychal Kendricks faces insider trading charges, released by team

first_img FacebookTwitterLinkedInEmail2018 Nick Cammett/Diamond Images/Getty Images(CLEVELAND) — Cleveland Browns linebacker Mychal Kendricks has conceded that he “participated in insider trading” four years ago and deeply regrets it.“I was drawn in by the allure of being more than just a football player,” Kendricks said in a statement released by his attorney Michael Schwartz. “While I didn’t fully understand all of the details of the illegal trades, I knew it was wrong, and I wholeheartedly regret my actions.”Kendricks said he trusted a former friend, Damilare Sonoiki, who had a Harvard degree and was working for Goldman Sachs at the time. Sonoiki later worked as a writer on the second season of the ABC comedy “Black-ish.”Trump blasts NFL players for kneeling during anthem: ‘Stand proudly …. or be suspended without pay’Both men now face insider trading charges brought by federal prosecutors in Philadelphia.“Mr. Sonoiki and Mr. Kendricks are alleged to have cheated the markets, cheated other investors and placed themselves above the law,” said Bill McSwain, the U.S. Attorney for the Eastern District of Pennsylvania.In the second half of 2014, court records said Sonoiki sent coded text messages and FaceTime conversations from his desk at Goldman Sachs to tip Kendricks off to corporate mergers.Kendricks allegedly made $1.2 million in illegal profits by purchasing securities in companies that were soon to be acquired and then selling his positions after the deals were publicly announced. In one instance, he made a nearly 400 percent return on his investment in just two weeks, court records said.“Mychal Kendricks used material non-public information, provided by his co-defendant, to score significant profits from expected market moves,” said the FBI Special Agent Christian Zajac. “That’s not merely gaming the system—that’s a federal crime.”According to court records, Kendricks rewarded Sonoiki for his tips with cash kickbacks, free NFL tickets and an evening on the set of a pop star’s music video, in which Kendricks made a cameo appearance.“Kendricks paid cash and shared celebrity perks for illegal tips that enabled him to trade and profit on confidential information that the rest of the investing public didn’t have,” said Stephanie Avakian, co-director of the U.S. Securities and Exchange Commission’s Division of Enforcement.Neither Kendricks nor Sonoiki are currently in custody. Kendricks has acknowledged his actions and is cooperating with authorities.The NFL pro is a sixth year outside linebacker who was drafted out of the University of California, Berkeley. For the first five years of his career, Kendricks played for the Philadelphia Eagles and won the Super Bowl with the team last year before joining the Browns this summer as a free agent.Kendricks was released by the Browns Wednesday afternoon.“Prior to signing Mychal, we were informed that there was a financial situation that he had been involved with in 2014. We were told Mychal had fully cooperated with investigators as a victim. From what was communicated at that time and based on the numerous questions we asked and further due diligence on our part, including checking with the league office, there was no information discovered that conveyed otherwise,” the team’s general manager, John Dorsey, said in a statement.“Recently, we were provided an update on the matter and the circumstances have changed. We are now dealing with a different set of facts and the additional information we’ve gathered has led us to the decision to release Mychal from our team. Due to the ongoing legal nature of this situation, we will have no further comments,” the statement continued.The Eagles have not returned ABC News’ request for comment.Sonoiki’s attorney Mark Wilson, an assistant federal defender, told the Wall Street Journal he will plead guilty. “He was working as an analyst, he overheard information and he passed it on,” he said.ABC News could not reach Sonoiki for comment.Copyright © 2018, ABC Radio. All rights reserved. August 29, 2018 /Sports News – National Cleveland Browns linebacker Mychal Kendricks faces insider trading charges, released by team Written bycenter_img Beau Lundlast_img read more

Scoreboard roundup — 9/7/18

first_img Beau Lund Written by September 8, 2018 /Sports News – National Scoreboard roundup — 9/7/18center_img FacebookTwitterLinkedInEmailiStock/Thinkstock(NEW YORK) — Here are the scores from Friday’s sports events:INTERLEAGUEDetroit 5, St. Louis 3AMERICAN LEAGUEToronto 3, Cleveland 2, 11 InningsTampa Bay 14, Baltimore 2Houston 6, Boston 3Minnesota 10, Kansas City 6L.A. Angels 5, Chicago White Sox 2Oakland 8, Texas 4N.Y. Yankees 4, Seattle 0NATIONAL LEAGUECincinnati 12, San Diego 6Pittsburgh 5, Miami 3Philadelphia 4, N.Y. Mets 3Milwaukee 4, San Francisco 2L.A. Dodgers 4, Colorado 2Arizona 5, Atlanta 3WOMEN’S NATIONAL BASKETBALL ASSOCIATION PLAYOFFSSeattle 89, Washington 76TOP 25 COLLEGE FOOTBALL(16) TCU 42, SMU 12Copyright © 2018, ABC Radio. All rights reserved.last_img read more

Scoreboard roundup — 1/2/19

first_img Written by January 3, 2019 /Sports News – National Scoreboard roundup — 1/2/19 FacebookTwitterLinkedInEmailiStock(NEW YORK) — Here are the scores from Wednesday’s sports events:NATIONAL BASKETBALL ASSOCIATIONMiami 117, Cleveland 92Dallas 122, Charlotte 84Washington 114, Atlanta 98Brooklyn 126, New Orleans 121Orlando 112, Chicago 84Boston 115, Minnesota 102Detroit 101, Memphis 94Philadelphia 132, Phoenix 127Oklahoma City 107, L.A. Lakers 100NATIONAL HOCKEY LEAGUEPittsburgh 7, NY Rangers 2Calgary 5, Detroit 3OT Vancouver 4, Ottawa 3Dallas 5, New Jersey 4Edmonton 3, Arizona 1San Jose 5, Colorado 4TOP-25 COLLEGE BASKETBALL(5) Kansas 70, (23) Oklahoma 63(6) Nevada 72, Utah St. 49(8) Michigan St. 81, Northwestern 55(11) Texas Tech 62, West Virginia 59(15) North Carolina 77, Harvard 57(19) Houston 74, Tulsa 56Maryland 74, (24) Nebraska 72Copyright © 2019, ABC Radio. All rights reserved.center_img Beau Lundlast_img read more

Childs leads BYU over Pacific 69-59

first_img FacebookTwitterLinkedInEmailPROVO, Utah (AP) — Yoeli Childs had 19 points and 13 rebounds to lift Brigham Young to a 69-59 win over Pacific on Saturday night. Roberto Gallinat had 15 points for the Tigers (13-13, 3-8). Anthony Townes added 13 rebounds. Jahlil Tripp had 10 rebounds. Tags: BYU Cougars Basketball/WCC/Yoeli Childs February 9, 2019 /Sports News – Local Childs leads BYU over Pacific 69-59 Associated Presscenter_img The Cougars improve to 2-0 against the Tigers for the season. Brigham Young defeated Pacific 90-87 on Jan. 3. Brigham Young matches up against San Diego on the road on Thursday. Pacific matches up against Santa Clara on the road next Saturday. Written by Connor Harding had 13 points for Brigham Young (16-10, 8-3 West Coast Conference). TJ Haws added seven assists.last_img read more

Woods scores 19 to lead Portland St. over S. Utah 78-69

first_img Written by Harrison Butler had 16 points and 10 rebounds for the Thunderbirds (12-12, 7-8). Jacob Calloway added 14 points. Andre Adams had 12 points and eight rebounds. February 16, 2019 /Sports News – Local Woods scores 19 to lead Portland St. over S. Utah 78-69 Tags: Big Sky/Holland Woods/Portland State/SUU Thunderbirds Basketball Michael Nuga had 12 points for Portland State (11-14, 6-8 Big Sky Conference), which earned its fourth consecutive home victory. Deante Strickland added 11 points. Jamie Orme had 10 points for the home team.center_img The Vikings leveled the season series against the Thunderbirds with the win. Southern Utah defeated Portland State 83-69 on Jan. 17. Portland State takes on Idaho State at home on Thursday. Southern Utah plays Eastern Washington at home on Thursday. FacebookTwitterLinkedInEmailPORTLAND, Ore. (AP) — Holland Woods registered 19 points and eight assists as Portland State topped Southern Utah 78-69 on Saturday night. Associated Presslast_img read more

Morgan Bests Juab For 7th All-Time State Title

first_img FacebookTwitterLinkedInEmail3-A Football State Title GameST. GEORGE, Utah-Jakob Burt intercepted Juab quarterback Zac Cowan on 4th and 10 with 48 seconds left and the Morgan Trojans overpowered Cowan’s Wasps 8-0 to win the 3-A state football title Friday at Trailblazers Stadium.The stingy Trojans limited the explosive Wasps to 156 yards of offense and only 3.1 yards per play. Cade Bowring had 78 scrimmage yards on 19 touches for Juab and Bodee Blackett added 59 yards on six touches for the Wasps in defeat.Sloan Calder made field goals of 45 and 42 yards for Morgan, with the other Trojans’ score coming on a safety when Kollin Robertson’s snap sailed over his head as Juab attempted to punt. Trevor Jarrett had 10 carries for 48 yards to pace the Morgan offense.This is the Trojans’ seventh all-time state title (1940, 1977, 1979, 1983, 1993, 1997, 2019). November 15, 2019 /Sports News – Local Morgan Bests Juab For 7th All-Time State Title Written by Tags: Juab football/Morgan football Brad Jameslast_img read more

2 late goals give Salt Lake a 4-all tie with Portland

first_imgAugust 29, 2020 /Sports News – Local 2 late goals give Salt Lake a 4-all tie with Portland FacebookTwitterLinkedInEmailPORTLAND, Ore. (AP) — Giuseppe Rossi and Sam Johnson scored late goals and Real Salt Lake rallied to a 4-all draw with the Portland Timbers on Saturday night.Sebastian Blanco scored in the 70th minute to put Portland up 3-2, and Felipe Mora added what looked like an insurance goal in the 85th.Rossi’s first MLS goal in the 90th closed the gap, and Johnson tied it late in stoppage time. Tags: MLS/Portland Timbers/Real Salt Lake Written by Associated Presslast_img