When stockpiles of yellow fever vaccine run low, partial doses are effective, according to a new study. The report on the vaccine, which currently is in short supply, comes as officials in Brazil attempt to contain an outbreak with what they describe as the largest-ever mass vaccination campaign using partial doses. Yellow fever is a mosquito-borne viral disease found in tropical Africa and South and Central America. Severe cases can cause jaundice and death, but most cases involve fever, muscle pain and vomiting. Congo outbreak, experiment During a major outbreak in the Democratic Republic of the Congo in 2016, the government aimed to prevent the disease from spreading in the capital, Kinshasa. Health officials launched a mass vaccination campaign targeting 7.6 million people. But the outbreak had depleted vaccine stockpiles. Hoping to stretch the available supply, the World Health Organization reviewed the small number of available studies on using reduced doses and recommended using one-fifth of a dose per person. It seemed to work. Researchers took blood samples from more than 700 people before and after they received the partial dose. In the new study, published in the New England Journal of Medicine, nearly all of those vaccinated with the lower dose developed enough antibodies to the virus to prevent infection. “That was the encouraging thing, that this can be done as a potential way — when there’s supply limitations on the vaccine — to help potentially control an outbreak,” said study co-author Erin Staples at the U.S. Centers for …
How Best to Treat Opioids’ Youngest Sufferers? No One Knows
Two babies, born 15 months apart to the same young woman overcoming opioid addiction. Two very different treatments. Sarah Sherbert’s first child was whisked away to a hospital special-care nursery for two weeks of treatment for withdrawal from doctor-prescribed methadone that her mother continued to use during her pregnancy. Nurses hesitated to let Sherbert hold the girl and hovered nervously when she visited to breast-feed. Born just 15 months later and 30 miles away at a different South Carolina hospital, Sherbert’s second child was started on medicine even before he showed any withdrawal symptoms and she was allowed to keep him in her room to encourage breast-feeding and bonding. His hospital stay was just a week. “It was like night and day,” Sherbert said. The different approaches highlight a sobering fact: The surge has outpaced the science, and no one knows the best way to treat the opioid epidemic’s youngest patients. Trying to cope with the rising numbers of affected infants, hospitals around the United States are taking a scattershot approach to treating the tremors, hard-to-soothe crying, diarrhea and other hallmark symptoms of newborn abstinence syndrome. “It’s a national problem,” said Dr. Lori Devlin, a University of Louisville newborn specialist. “There’s no gold-standard treatment.” With help from $1 million in National Institutes of Health funding, researchers are seeking to change that by identifying the practices that could lead to a national standard for evidence-based treatment. A rigorous multi-center study comparing treatments and outcomes …
Fries, Not Flowers: Fast-Food Chains Try to Lure Valentines
Is that love in the air or french fries? White Castle, KFC and other fast-food restaurants are trying to lure sweethearts for Valentine’s Day. It’s an attempt to capture a bit of the $3.7 billion that the National Retail Federation expects Americans to spend on a night out for the holiday. Restaurant analyst John Gordon at Pacific Management Consulting Group says it appeals to people who don’t want to splurge on a pricier restaurant. And some customers enjoy it ironically. White Castle, which has been offering Valentine’s Day reservations for nearly 30 years, expects to surpass the 28,000 people it served last year. Diners at the chain known for its sliders get tableside service and can sip on its limited chocolate and strawberry smoothie. KFC is handing out scratch-and-sniff Valentine’s Day cards that give off a fried chicken aroma to diners who buy its $10 Chicken Share meals or a bucket full of Popcorn Nuggets. Panera Bread wants couples to get engaged at its cafes; those who do can win food for their weddings from the soup and bread chain. And Wingstop sold out of its $25 Valentine’s Day kit, which came with a gift card and a heart-shaped box to fill with chicken wings. The company says 1,000 of the kits were gone in 72 hours. …
US Inflation Increases Most in a Year
The U.S. on Wednesday reported its biggest increase in consumer prices in a year, pushing stocks lower in early trading. The consumer price index, which follows the costs of household goods and services, advanced by a half percentage point in January, up from two-tenths of a point in December. The January increase pushed the year-over-year inflation rate up by 2.1 percent. It was the same 12-month rate recorded in December, increasing fears among investors that firming inflation, along with increasing wages paid to American workers, could lead policymakers at the country’s central bank, the Federal Reserve, to boost interest rates at a faster pace. The Labor Department said consumer prices, minus the volatile changes in food and energy costs, rose three-tenths of a percentage point in January, the largest increase since January 2017. Analysts had been expecting an increase of 0.2 percent. Stock indexes were lower at the start of Wednesday, with the key Dow Jones industrial average falling about a third of a percentage point after a string of recent days with massive swings between losses and gains. …
Markets Rise Ahead of US Inflation Figures
U.S. stock markets are set to open higher Wednesday as investors prepared for the government’s latest monthly inflation report. Markets in Europe also showed gains in early trading, while in Asia, Hong Kong’s Hang Seng finished up more than 2 percent and Japan’s Nikkei finished down 0.4 percent. The U.S. Bureau of Labor Statistics will make public its Consumer Price Index for January with discussion of how prices for certain sectors changed from the prior month. The report comes after recent wild swings in U.S. stock markets driven by investor fears of high inflation and the possibility the Federal Reserve will move to raise interest rates. …
Reviving Traditional Treatment, Polish Company Breeds Leeches for Export
The use of blood-sucking leeches in treating disease may seem like a relic of the Middle Ages, but one Polish company says there is growing demand by doctors for the worms. Faith Lapidus reports. …
«Нафтогаз»: Україна успішно долає опалювальний сезон, запасів газу достатньо
Національна акціонерна компанія «Нафтогаз України» повідомила, що у газосховищах України залишається достатньо палива для завершення опалювального сезону. «На сьогодні в українських газосховищах зберігається 11,6 мільярда кубометрів газу, що на 2,6 мільярда більше, ніж на цю дату минулого року. Тим часом уже дві третини опалювального сезону минуло. Нагадаємо, історичний мінімум був зафіксований на рівні 6 мільярдів кубометрів весною 2013 року», – вказала компанія в мережі Twitter. За даними оператора газотранспортної системи України державної компанії «Укртрансгаз», від початку в середині жовтня 2017 року опалювального сезону споживачі використали майже 5,5 мільярда кубометрів газу. Міністр енергетики і вугільної промисловості Ігор Насалик заявляв про плани нагромадження 17 мільярдів кубометрів для проходження опалювального сезону 2017-2018 років. При підготовці до опалювального періоду 2016-2017 років профільне міністерство також наполягало на необхідності нагромадити 17 мільярдів кубометрів газу, але керівництво «Нафтогазу України» запевняло, що 14,5 мільярда кубометрів буде цілком достатньо. У результаті торік в опалювальний сезон Україна ввійшла із запасами «блакитного палива» на рівні 14,7 і завершила сезон на рівні 8,4 мільярда кубометрів. За інформацією Міненерго, в цьому сезоні в українські ПСГ закачали 8,8 мільярда кубів газу, і станом на 24 жовтня загальний обсяг становив понад 16,9 мільярда кубів. (Близько 5 мільярдів – це технічний газ, необхідний для функціонування сховищ). Опалювальний сезон в Україні зазвичай стартує в середині жовтня. За багаторічними стандартами, він розпочинається тоді, коли середньодобова температура повітря впродовж трьох діб становить вісім або менше градусів. Тривалість опалювального сезону становить близько півроку, але в Києві у 2017 році комунальники через суттєве потепління вимкнули опалення 1 квітня. Натомість у Львові …
‘Can You Dig It?’ Africa Reality Show Draws Youth to Farming
As a student, Leah Wangari imagined a glamorous life as a globe-trotting flight attendant, not toiling in dirt and manure. Born and raised in Kenya’s skyscraper-filled capital, Nairobi, the 28-year-old said farming had been the last thing on her mind. The decision to drop agriculture classes haunted her later, when her efforts in agribusiness investing while running a fashion venture failed. Clueless, she made her way to an unusual new reality TV show, the first of its kind in Africa. “Don’t Lose the Plot,” backed by the U.S. government, trains contestants from Kenya and neighboring Tanzania and gives them plots to cultivate, with a $10,000 prize for the most productive. The goal: Prove to young people that agriculture can be fun and profitable. “Being in reality TV was like the best feeling ever, like a dream come true for me,” Wangari said. But she found it exhausting. As callouses built up on her hands, her friends made bets that she wouldn’t succeed. “Don’t Lose the Plot” is aimed at inspiring youth in East Africa to pursue agribusiness entrepreneurship. Producers said the show wants to demystify the barriers to starting a small business and challenge the prejudices against farming-related careers, even as many youths flee rural areas for urban ones. “What we hope to achieve … is first to show people that you can make money out of farming, to change the age profile of farmers in Africa from 60 to the youth. And the next thing …
Land Fight Simmers Over Brasilia’s Shrine of Shamans
Brasilia – It is one of the most expensive areas in the Brazilian capital – and one of the most sacred. A plot in downtown Brasilia – known as Santuário dos Pajés or Shrine of the Shamans – is at the center of a conflict between indigenous people hoping to preserve their traditional way of life and developers eager to build an upmarket neighborhood. While property is often contested in Brazil, it is usually waged over remote jungles or distant mountains – vast swaths of land that can be mined or farmed for profit. This conflict centers on Brasilia’s urban power base. Just minutes from the National Congress, the Shrine of the Shamans – with its unpaved roads, forest and small houses – sits surrounded by lavish high rises. Indigenous residents say they feel cornered by the encroaching developers, with multiple interests fighting over the last undeveloped plot in Brasilia, a planned city known for its futuristic buildings designed by Brazilian architect Oscar Niemeyer. “The sanctuary has been an indigenous land for more than 40 years. We have been fighting for its demarcation,” indigenous leader Márcia Guajajara told the Thomson Reuters Foundation inside the Shrine. “When the developers arrived, we were already here. They think that money always wins,” she said. It is one of many such conflicts in Brazil, rich in land to be exploited and low on deeds and property records. For land demarcation is controversial in Brazil, despite safeguards in both the constitution and United Nations guidelines …
Solar Power Push Lights Up Options for India’s Rural Women
In her village of Komalia, the fog swirls so thick at 7 a.m. that Akansha Singh can see no more than 15 meters ahead. But the 20-year-old is already cycling to her workplace, nine kilometers away. Halfway there she stops for two hours at a computer training center, where she’s learning internet skills. Then she’s off again, and by 10 a.m. reaches the small garment manufacturing plant where she stitches women’s clothing for high-end brands on state-of-the-art electric sewing machines. Solar energy powers most of her day — the computer training center and the 25-woman garment factory run on solar mini-grid electricity — and clean power has given her personal choice as well, she said. If the mini-grid system had not been put in place, Singh — a recent college graduate without funds to pursue training as a teacher, the only job open to women in her village — would have had no alternative but to marry, she said. In fact, “I would already be married off,” she told the Thomson Reuters Foundation. Today, however, she earns 4,500 rupees ($70) a month working on solar-powered sewing machines. She uses part of that to pay 300 rupees ($4.70) a month for her computer education class — and is planning to start a computer training center closer to home. Like her, most of the women at the factory earn between 2,500 and 4,500 rupees ($39- $70) a month, which has helped their families eat better, get children to school and pay for …
Surgical Infections More Common in Low-Income Countries, Study Finds
Surgeries in low-income countries had higher rates of infections than those in higher-income countries, according to a new study published in The Lancet Infectious Diseases. The authors said their report provided a starting point for making surgery safer. Infections at the site of surgery are the most common complications after operations. These infections raise the cost of procedures that are already expensive. And they often make recovery longer and more painful. The study looked at more than 12,000 gastrointestinal surgeries at 343 hospitals in 66 countries. Marked difference Overall, about one in 10 patients developed a surgical site infection. But in low-income countries, that rate rose to nearly one in four. That’s after taking into account factors such as the patient’s health, the type of surgery and the condition being treated. Other elements that could have been behind the difference included the kinds of facilities available in low-income countries, or how long it took to get patients to a hospital, said study co-author Ewen Harrison at the University of Edinburgh. “If you’re in rural sub-Saharan Africa and you’re run over by a car, it may be a number of days before you can get to a hospital,” he said. “During that time, infection can get into wounds.” Drug resistance Another component could have been the availability of effective antibiotics, Harrison said. Antibiotics were nearly always given before surgery to prevent infection. But overall, about one in five surgical site infections were resistant to these antibiotics. The rate was higher in low-income countries — one in three — but …
NYC e-Bike Ban is Disaster for Immigrant Delivery Workers
Aimin Liu’s food delivery job is an exercise of muscle memory and physical endurance. He scans the Chinese kitchen’s receipts and addresses before placing his hands on the padded handlebars of his e-bike. Lifting his body, he is off — as fast as the bike will allow, against the sting of the winter wind. The goal is to deliver 30 to 40 orders a day, six days a week, across New York’s midtown and lower Manhattan, sometimes as far as 20 city blocks away. Liu has been doing this for almost as many years. “My legs are no good,” Liu tells VOA in Mandarin, rubbing his 59-year-old kneecaps. “Both of my feet hurt. I have arthritis on both sides.” If it weren’t for his electric motor-powered bicycle, Liu says he might collapse or deliver half the number of orders on any 12-hour shift — not an option in a low-wage profession that is dependent upon customer tips. But that is the dilemma faced by Liu and thousands of delivery workers, most of them Chinese immigrant workers in their 50s and 60s. The e-bike — which can typically reach speeds of 32 kilometers per hour — is legal to purchase and own, but illegal to operate on New York streets, thanks to conflicting federal and state regulations. Workers like Liu have a choice: Use an e-bike and risk confiscation by the New York Police Department (NYPD), along with a $500 ticket, or don’t use an e-bike and jeopardize a benchmark monthly …
Cuba Creditors Offer ‘Very Significant Relief’ in Debt Proposal
Cuba’s commercial creditors have offered “very significant debt relief” in a proposal sent to cash-strapped Havana in late January, according to two advisers to the group, in a sign that holders of the defaulted debt are ready to ramp up the pressure. The communist-run island has seen its financial situation deteriorate in recent months following the deepening of Venezuela’s economic crisis, lower revenue from commodity and related exports, devastation wrought by Hurricane Irma and tightening of business and travel restrictions by the U.S. administration under President Donald Trump. In 2015, Cuba reached a debt deal with members of the Paris Club of creditor nations, but having not dealt with its defaulted commercial creditors in the London Club means the country is in effect shut out of international capital markets. “The committee reached out to Cuba in late January,” said Rodrigo Olivares-Caminal, coordinator of the creditor group and a law professor at London’s Queen Mary University. “We have made a good faith proposal to the government.” The creditor group holds obligations representing a face value of $1.4 billion worth of Cuban debt and is made up of three funds — Stancroft Trust Ltd, Adelante Exotic Debt Fund Ltd and CRF I Ltd — as well as one commercial bank. “We are trying to give the country another chance to reach an amicable understanding with creditors,” Olivares-Caminal told Reuters. “This would give them very beneficial terms to remedy their situation vis-a-vis capital markets.” While details of the proposal were confidential, it would convey “very …
Thomas Cook Flies Britons to Tunisia Three Years After Beach Attack
Thomas Cook flew British tourists to Tunisia on Tuesday for the first time since an Islamist militant killed 30 Britons on one of the North African country’s beaches in 2015. Tourism provides much needed jobs and foreign currency in Tunisia, but it has struggled since the attack in the resort of Sousse killed 39 holidaymakers and an earlier one at the Bardo National Museum in Tunis left 21 dead. The sector accounts for about 8 percent of Tunisia’s gross domestic product and the attacks worsened an economic crisis started by the overthrow of Zine al-Abidine Ben Ali in 2011. The 2015 beach attack, which was claimed by Islamic State, prompted Britain to advise against all but essential travel to Tunisia, and major operators scrapped their tour holidays there. However, Britain’s Foreign Office softened its advice last year and Thomas Cook said all three of its flights to Tunisia’s Enfidha airport were full. It will fly there three times a week, allowing Britons to join German, French and Belgian holidaymakers who have been going for the last two years. TUI Group, the operator with whom the victims had traveled, said last month it too planned to offer holidays in Tunisia again, starting in May. “It’s amazing to come back to Tunisia with my husband. I’ll go to Sousse and I‘m not afraid,” a British tourist who have her name as Julia said. “Tunisia is obviously very secure. I want to spend a pleasant holiday again in the nice resort of Sousse.” …
Russia: Hackers Stole More Than $17M from Its Banks in 2017
Hackers stole more than 1 billion rubles ($17 million) from Russian banks using the Cobalt Strike security-testing tool in 2017, a central bank official said on Tuesday. Russia is under intense scrutiny over cyber crime following allegations hackers backed by Moscow have attacked targets in the United States and Europe, accusations the Kremlin has repeatedly denied. Russian authorities are now keen to show that Russia too is a frequent victim of cyber crime and that they are working hard to combat it. Central bank Deputy Governor Dmitry Skobelkin told an information security conference in the Russian city of Magnitogorsk that 21 “waves of attacks” using Cobalt Strike had been recorded in 2017. “More than 240 credit organizations were hit by the attacks, 11 of which were successful. The amount stolen was more than 1 billion rubles,” he said. Cobalt Strike is a security tool used to test the strength of an organization’s cyber defenses, but it has also been used by hackers to attack banks in Russia and Europe. A group known as Cobalt because of their use of the tool attacked cash machines in more than a dozen countries in 2016, using the malicious software to force the ATMs to spit out cash. Skobelkin said the Russian central bank had sent warnings to more than 400 organizations which were targeted by the Cobalt group last year. …
Russian Cargo Ship Launched to ISS After 2-Day Delay
An unmanned Russian cargo ship has blasted off for the International Space Station, two days after the original launch was scrubbed. The Progress capsule is carrying 2.7 metric tons (3 U.S. tons) of food, fuel and other supplies. It entered orbit eight minutes after liftoff Tuesday from the Russian space complex in Baikonur, Kazakhstan. The abandoned Sunday launch was intended to test a new regime for fast deliveries to the space station, docking less than four hours after launch. But Tuesday’s launch will follow a longer route, with docking scheduled for Thursday. There are six astronauts aboard the space station – three Americans, two Russians and one from Japan. …
Зміцнення гривні на міжбанку триває
На міжбанківському валютному ринку триває зміцнення національної валюти, повідомляє сайт «Мінфін», який відстежує перебіг сесії. Торги 13 лютого розпочалися з переважання пропозиції долара над попитом, і курс сягнув рівня 26 гривень 70 копійок за одиницю американської валюти. Національний банк України ще не виходив на ринок. 12 лютого регулятор оголосив аукціон з викупу 100 мільйонів доларів за ціною відтинання 26 гривень 85 копійок, купив близько половини від цього обсягу. На 13 лютого НБУ встановив курс гривні щодо долара США на рівні 26 гривень 84 копійки, що є максимумом за останні два з половиною місяці. Гривня з незначними перервами зміцнюється третій тиждень поспіль. 22 січня котирування сягнули 28 гривень 90 копійок за долар, відтоді національна валюта постійно посилювалася. Упродовж цих тижнів НБУ регулярно виходив на ринок, щоб викупити надлишок доларів і не допустити надмірних коливань. …
Курс гривні зміцнився до осіннього рівня – НБУ
На рівні 26 гривень 83-87 копійок офіційний курс востаннє перебував 28 і 29 листопада …
Hotel in DC Offers a Cooking Class for Couples before Valentine’s Day
Valentine’s Day is probably the most romantic holiday. In the United States, with people sending 190 million Valentine’s Day cards and spending around $100 per person on gifts. Instead of going out for a restaurant dinner for the holiday, a new idea is taking hold. These days more couples are planning to do something together. Classes like painting and cooking are a popular. Mariia Prus checked out the options for couples at one of Washington’s fanciest hotels. …
Opioid Makers Gave $10 Million to Advocacy Groups Amid Epidemic
Companies selling some of the most lucrative prescription painkillers funneled millions of dollars to advocacy groups that in turn promoted the medications’ use, according to a report released Monday by a U.S. senator. The investigation by Missouri’s Senator Claire McCaskill sheds light on the opioid industry’s ability to shape public opinion and raises questions about its role in an overdose epidemic that has claimed hundreds of thousands of American lives. Representatives of some of the drugmakers named in the report said they did not set conditions on how the money was to be spent or force the groups to advocate for their painkillers. The report from McCaskill, ranking Democrat on the Senate’s homeland security committee, examines advocacy funding by the makers of the top five opioid painkillers by worldwide sales in 2015. Financial information the companies provided to Senate staff shows they spent more than $10 million between 2012 and 2017 to support 14 advocacy groups and affiliated doctors. The report did not include some of the largest and most politically active manufacturers of the drugs. The findings follow a similar investigation launched in 2012 by a bipartisan pair of senators. That effort eventually was shelved and no findings were ever released. While the new report provides only a snapshot of company activities, experts said it gives insight into how industry-funded groups fueled demand for drugs such as OxyContin and Vicodin, addictive medications that generated billions in sales despite research showing they are largely ineffective for chronic pain. ‘Pretty damning’ …
Interior to Replace Obama-Era Rule on Methane Emissions
The Interior Department is replacing an Obama-era regulation aimed at restricting harmful methane emissions from oil and gas production on federal lands. A rule being published in the Federal Register this week will replace the 2016 rule with requirements similar to those in force before the Obama administration changed the regulation. Interior had previously announced it was delaying the Obama-era rule until January 2019, arguing that it was overly burdensome to industry. Officials said then that the delay would give the federal Bureau of Land Management time to review the earlier rule while avoiding tens of millions of dollars in compliance costs to industry. Methane, the main component of natural gas, is frequently wasted through leaks or intentional releases during drilling operations. An estimated $330 million a year in methane is wasted on federal lands, enough to power about 5 million homes a year. The new rule announced Monday marks at least the fourth time the Trump administration has moved to delay, set aside or replace the Obama-era rule, which was finalized in late 2016. The rule forced energy companies to capture methane that’s burned off or “flared” at drilling sites because it pollutes the environment. Many companies consider the rule unnecessary and overly intrusive, but environmental groups warn that methane emissions from oil and gas operations are the second-largest industrial contributor to climate change in the United States. Methane is far more potent at trapping heat than carbon dioxide but does not stay in the air as long. Methane …
US Charges 5 Ex-Venezuelan Officials in PDVSA Bribe Case
U.S. prosecutors on Monday announced charges against five former Venezuelan officials accused of soliciting bribes in exchange for helping vendors win favorable treatment from state oil company PDVSA, the latest case to stem from a $1 billion graft probe. The indictment by the U.S. Justice Department was filed in federal court in Houston, Texas, and was made public after Spain on Friday extradited one of the former officials, Cesar Rincon, who was a general manager at PDVSA’s, procurement unit Bariven. Others charged included Nervis Villalobos, a former Venezuelan vice minister of energy; Rafael Reiter, who worked as PDVSA’s head of security and loss prevention; and Luis Carlos de Leon, a former official at a state-run electric company. Those three like Rincon were arrested in Spain in October at the request of U.S. authorities amid a foreign bribery investigation into the financially struggling PDVSA, or Petroleos de Venezuela SA. De Leon, Villalobos and Reiter remain in Spanish custody. The indictment also charged Alejandro Isturiz Chiesa, who was an assistant to Bariven’s president and remains at large. All five face conspiracy and money laundering charges. De Leon and Villalobos were also charged with conspiring to violate the U.S. Foreign Corrupt Practices Act. Fred Schwartz, a lawyer for Rincon, said he expected his 50-year-old client would plead not guilty when he is arraigned on March 6. Lawyers for the other defendants could not be immediately identified. The case flowed out of a U.S. investigation into what prosecutors have previously called a $1 billion …
Satelites Show Warming Is Accelerating Sea Level Rise
Melting ice sheets in Greenland and Antarctica are speeding up the already fast pace of sea level rise, new satellite research shows. At the current rate, the world’s oceans on average will be at least 2 feet (61 centimeters) higher by the end of the century compared to today, according to researchers who published in Monday’s Proceedings of the National Academies of Sciences. Sea level rise is caused by warming of the ocean and melting from glaciers and ice sheets. The research, based on 25 years of satellite data, shows that pace has quickened, mainly from the melting of massive ice sheets. It confirms scientists’ computer simulations and is in line with predictions from the United Nations, which releases regular climate change reports. “It’s a big deal” because the projected sea level rise is a conservative estimate and it is likely to be higher, said lead author Steve Nerem of the University of Colorado. Outside scientists said even small changes in sea levels can lead to flooding and erosion. “Any flooding concerns that coastal communities have for 2100 may occur over the next few decades,” Oregon State University coastal flooding expert Katy Serafin said in an email. Of the 3 inches (7.5 centimeters) of sea level rise in the past quarter century, about 55 percent is from warmer water expanding, and the rest is from melting ice. But the process is accelerating, and more than three-quarters of that acceleration since 1993 is due to melting ice sheets in Greenland and …
Life’s Going Swimmingly for All-female Fish Species
An all-female freshwater fish species called the Amazon molly that inhabits rivers and creeks along the Texas-Mexico border is living proof that sexual reproduction may be vastly over-rated. Scientists said on Monday they have deciphered the genome of the Amazon molly, one of the few vertebrate species to rely upon asexual reproduction, and discovered that it had none of the genetic flaws, such as an accumulation of harmful mutations or a lack of genetic diversity, they had expected. They found that the Amazon molly, named after the fierce female warriors of ancient Greek mythology, boasts a hardy genetic makeup that makes it equally fit, or even more so, than fish using sexual reproduction in which both maternal and paternal genes are passed along to offspring. “The Amazon molly is doing quite well,” said biologist Manfred Schartl of the University of Wuerzburg in Germany. “Unexpectedly, we did not find the signs of genomic decay as predicted.” The fish reproduces using a strategy in which a female’s egg cell develops into a baby without being fertilized by a male’s sperm cell. But that does not mean the fish does not need some hanky panky. “The Amazon molly female produces clones of itself by duping a male of a closely related species to mate with her. The asexual mode of reproduction termed gynogenesis requires the female to mate with a male but none of the male’s genome is passed to the offspring,” said geneticist Wesley Warren of the McDonnell Genome Institute at Washington …