Stress experienced by an individual’s ancestors may overshadow the stress experienced within a lifetime

first_imgEmail Share on Twitter Share on Facebook New research suggests that stress exposure across generations may be more important than stress experienced within a lifetime.The study, published in Hormones and Behavior, compared a population of lizards (Sceloporus undulatus) who had been living near fire ants for about 30 generations with a population that had been free of fire ants. Young offspring from both these populations were exposed to fire ants (an ecologically relevant stressor), the stress-relevant hormone corticosterone (at a dosage to mimic the elevation that occurs in response to a fire ant attack), or a handling control once a week for 43 weeks.The researchers found that exposure to fire ants or corticosterone during early life did not affect the lizards’ stress physiology in adulthood. But the offspring of lizards from the fire ant-invaded populations did show a more robust stress response in adulthood compared to offspring from uninvaded populations, regardless of the early life stress they experienced. Pinterestcenter_img LinkedIn Share PsyPost interviewed the study’s corresponding author, Gail L. McCormick of the Pennsylvania State University. Read her responses below:PsyPost: Why were you interested in this topic?McCormick: We live in a stressful world, and understanding how individuals respond to stress is becoming increasingly important for both human health and conservation management. When researchers think about how an organism responds to stress, we don’t always consider previous experience with stress. When we do, we usually think in terms of an individual’s experience within its lifetime, but less so the experience of its ancestors. These stress histories may both affect how animals cope with the increasing amount of stress imposed by environmental change. We investigated the relative influence of stress experienced by one’s ancestors (transgenerational) and stress experienced in one’s lifetime (during early life) on how that individual responds to stress as an adult (adult stress physiology).What should the average person take away from your study?Our work reveals that the stress experienced by an individual’s parents or ancestors may overshadow the stress that an individual faces within its lifetime. In this study, offspring of lizards from high-stress sites were more responsive to stress as adults, regardless of exposure to stress during their own lifetime. This change is likely adaptive, as increased stress responsiveness triggers survival-enhancing behaviors in this species (to escape from fire ant attack, a frequent stressor at high-stress sites). Early life stress, however, did not directly affect adult stress physiology.Previous research demonstrates that early life stress can have long term effects on morphology, behavior, stress physiology, and immune function in a variety of species, including humans, but our work highlights the importance of also considering the effects transgenerational stress.Are there any major caveats? What questions still need to be addressed?The mechanism behind the transgenerational effect of stress exposure is still unknown. While long-term processes like natural selection could be playing a role, it is also possible that shorter-term mechanisms contribute as well, such as epigenetic effects (within lifetime effects that are transferred to offspring) and maternal effects (how mom provisions her offspring in utero or after birth/hatching).Transgenerational and early life stress may affect other traits, such as behavior, growth, and immune function, differently, and, in lizards, it appears that they do. Preliminary results suggest that the combination of transgenerational and early life stress dictate that animal’s immune response to stress later as an adult.Is there anything else you would like to add?The relative influence of these stress histories on stress physiology may not be conserved from species to species. Nonetheless, our work suggests that transgenerational stress exposure may influence adult stress physiology and, in some cases, may be more influential than stress experienced by that individual. Both stress histories should be considered when investigating how an organism responds to stress.The study, “Ancestry trumps experience: Transgenerational but not early life stress affects the adult physiological stress response“, was also co-authored by Travis R. Robbins, Sonia A. Cavigelli and Tracy Langkilde.last_img read more

Singers bring their Loverz Kwarrel to stage

first_imgZurayda and Zyboedien Abrahams, known as Thee A2, will be staging their show, Loverz Kwarrel, at the Joseph Stone Auditorium on Sunday December 29. Husband and wife duo, Zyboedien and Zurayda Abrahams, known as Thee A2, will be lighting up the stage with their show, Loverz Kwarrel, at the Joseph Stone Auditorium on Sunday December 29. The two have been singing together for 10 years, and although they have been supporting actsat other artists’ shows, this performance will be their first as the headline act. “The show has been coming on for a long time. Now is the right time,” Mr Abrahams said.Before they met, both were singers in their own right. Mr Abrahams performed with his father’s group, The A4, and Ms Abrahams did solo performances. Not long after they met, their shared passion for singing and performing, eventually led them to start singing together.Mr Abrahams’ musical journey started with The A4, but later he decided to offer music therapy at seniors’ homes. This, he said, was his great love. He still does music therapy at Cape Peninsula Organisation for the Aged (CPOA) homes in Bonteheuwel, Heideveld, Lotus Riverand Silvertown. This he doesconsistently, as he does not believe music therapy should be a once-off thing.“Many of our seniors have difficulty with walking, and cannot really go out, that is why we go to them. We do it every day, it’s not just a temporary thing. “We do it for the love of it. I would like to thank Hubert Paulse fromthe CPOA for giving me this opportunity,” Mr Abrahams said.Mr Abrahams is a builder by profession, and Ms Abrahams is a teacher.When she is not teaching or on stage, Ms Abrahams is also the choir master at Timour Hall Primary School in Plumstead, where she teaches.“Zyboedien works with recycled teenagers and I work with teenagers. We love music so much, and we just want to spread the love,” Ms Abrahams said.The couple are originally from Mitchell’s Plain, but now live in Plumstead. They don’t want to give away too much about what the show is about, only hinting that the title of the show might be a bit misleading. “The show will focus on how a couple can disagree, but not in an aggressive way. It’s about how todo things together, in a loving way, even if you disagree,” Ms Abrahams said.Other artists that will join them on the evening, include Zale Titus and Osman Abrahams, known as Mr A1, among others.Tickets to the show, Loverz Kwarrel, at the Joseph Stone Auditorium, on Sunday December 29, at 2.30pm, are R100 each. Call 076 592 1389 for tickets.last_img read more

Wabtec expands presence in China

first_imgCHINA: Beijing Wabtec Huaxia Technology has been established as a joint venture of US firm Wabtec and Beijing Huaxia United Friendship New Technology of Electrification Development Co, a local supplier of rail braking components. The company will manufacture friction products for the customers in China. ‘The Chinese market is rapidly growing, and we expect this joint venture to be a catalyst that will enable us to participate in that growth over time’, said Wabtec President & CEO Albert J Neupaver.last_img read more

A coaching first

first_imgBy DAVID NAGEL THE newly-formed South East Football League (SEFL) has appointed its first interleague coach with former Pakenham champion…[To read the rest of this story Subscribe or Login to the Gazette Access Pass] Thanks for reading the Pakenham Berwick Gazette. Subscribe or Login to read the rest of this content with the Gazette Digital Access Pass subscription.last_img

Kane says he ‘could have done better’ for England at World Cup

first_imgHARRY KANE says he could have “done better” for England at the World Cup despite winning the Golden Boot.The Three Lions captain scored six goals during the tournament in which the country fell back in love with the national team.4 Harry Kane has admitted he ‘could have done better’ while playing for England at the World CupCredit: GettyBut the Spurs striker failed to fire in England’s semi-final defeat to Croatia, and spurned a glorious chance in the first half.And Kane has given a blunt assessment of how he saw his performances out in Russia.Speaking to Sky Sports, the 25-year-old: “I think I could have done better at the World Cup if I’m totally honest.”It was great and I scored some good goals and important goals.4 Harry Kane played in golden boots against Spain in the Uefa Nations LeagueCredit: Twitter / Nike / @SpursOfficial4 These are the Nike-designed boots given to Harry Kane in recognition of his World Cup goalscoring exploitsCredit: Twitter / Nike / @SpursOfficial”But there was stuff I could’ve done better as well – certain finishes and certain movements, but that is all part of the learning curve.”I remember coming back and talking to people about it, that to win a Golden Boot at a World Cup and think you could do better is exciting because it means there’s lots of improvement and I’m at a high level already.Most Read In FootballRETRACING STEPSJack Charlton’s granddaughter Emma Wilkinson ‘would love’ to visit IrelandROY RAGEFurious Roy Keane launched foul-mouthed rant at Pique over Fabregas friendshipPicturedTOP FORMBrazil icon Ronaldo soaks up sun with partner Celina Locks on yacht in FormenteraPicturedON THE PAOLPaolo Maldini shows off shredded physique at 52 while on holiday with wifeExclusiveLOCK CLOWNPaul Scholes flouts local lockdown rules by throwing huge 7-hour birthday bashLive BlogUNITED LATESTMan Utd transfer news LIVE: All the gossip and updates from Old TraffordGareth Southgate and Harry Kane expect tricky Spain will want redemption after World Cup4 Harry Kane is looking forward to seeing if his golden boots will bring goals against SpainCredit: Getty”I feel fully fit, we’ve come back and started the season well from a club point of view so hopefully I can take that into the games here. “The Tottenham talisman left fans baffled when he revealed the three words that are printed inside of them ahead of the Nations League clash with Spain.Kane, who guided the Three Lions to the semi-finals this summer, will wear the new boots to symbolise his success in Russia.But in bold letters inside of the shoe, it reads: “Lane. Lion. Leader.”Harry Kane stars in cringeworthy advert for Samsung and Fortnite as Tottenham star seems to forget where he liveslast_img read more

Barcelona stewards ‘hit Spurs fans with batons’ during clash at the Nou Camp

first_imgSPURS fans appear to be battered with batons by Barcelona stewards at the Nou Camp last night.A video uploaded by a Tottenham supporter appeared to show security staff clambering over themselves to strike the fans during the Champions League clash.5 A Spurs fan claimed Barcelona stewards allegedly started hitting them for no reasonCredit: TwitterIt is unclear what caused the fracas, but supporters who appear to be peaceful are seen trying to hold back the stewards as strikes rain down.A fan by the name of Alex, who posted the video and had photos showing him at the Nou Camp from last night, wrote: “I just need to address this issue which happened last night during the game.”Absolutely disgusting behaviour by Barcelona stewards hitting us with batons for no reason!”@SpursOfficial please send this to @UEFA @Champions [email protected] it’s disgusting.5 A series of baton-wielding stewards appear to move towards the fans in the Nou CampCredit: Twitter5 One steward looks on as the fracas takes place in the away end of Barcelona’s stadiumCredit: Twitter”We done nothing wrong and they just started hitting us. They wanted a fight, we didn’t want any trouble!”We were just trying to watch the match.”The video lasts 45 seconds and appears to show as many as four stewards hitting fans.One member of security personnel can be seen clamouring forward over the heads of others in an attempt to land a blow.— Phil (@oasispj38) December 12, 2018 5 Chelsea fan Colin Twyman suffered a fractured cheekbone after being hit by Barca stewards earlier this yearCredit: TwitterBarcelona stewards hit fans with batons outside the Nou Camp as Chelsea supporters goad them by singing ‘You’ll always be Spain’A fellow user posted a photo showing a man with his head and hands taped up.The man apparently feature in the photo claimed he had been hit with a baton “for no reason”.He wrote: “That’s me with the head and hands taped. Got smacked outside game for no reason. Medics who looked after me were first class and I want to thank them.”5 Lucas Moura’s goal put Spurs in the Champions League last-16Credit: EPAOne Chelsea fan was left with horrific eye injuries in March this year after Barca stewards allegedly shepherded Blues fans into thugs.Mauricio Pochettino’s side made it through to the Champions League last-16 courtesy of Lucas Moura’s equaliser.That cancelled out Ousmane Dembele’s opener meaning Inter’s 1-1 draw at home to PSV was not enough to send them through instead.last_img read more