on the job. what secrets lie behind these discovered mileage benches and 360 degrees and explore fascinating boats. heritage selling d w world heritage 360. now the it's a highly aggressive parasite that will save bites during the day unconcerned submit . a range of different viruses, the asian tiger. most of the time the global movement of goods and climate change have accelerated. it spread in europe, biologist, and now sterilizing and releasing large numbers of the insects to try to slow it down the that on much more this week on tomorrow to day d w. science magazine. welcome tradition. this

loud is teeming with asian tiger mosquito. and every stage of development from larvae to adults. elio nota afl cio has studied the behavior of the insects in great detail and is now ready to launch an unusual experiment. she's been preparing for years. the tiger mosquito population is growing rapidly in europe, and the biologist is hoping to slow that close in a new way by releasing huge numbers for sterile males. in the picture, risk village of more co to in southern switzerland researchers will release a total of $2000000.00 of the insects this year, which i'm request request professionally. since mid may, flawed show has been releasing hard. tiger mosquitoes weekly at around 70 different local ations and more coating. the people who live here don't have to worry about

bites though. even if it feels like they should get there is no need to worry. the males male start buying finished. they just fly around and then they die after a few days established on the guitar in the infer tile. tiger mosquito, the males don't survive long because they've been weakened by the stair realization process and transport. but even during their short lives, they compete with for dial males in the wild for mates. and due to their sheer numbers, the females can't avoid them. steve citizens dimension in the field, the sterilized miles mates with the on the sterilized females. i d often 1st think when the end of the amazing ones, the females become and soft tile for life and cancelling the slide. the ultimate aim is to cause the population of the invasive species to collapse.

kelly, a note of flap chose goal, is to reduce the number of tiger mosquitoes in the test area by around 80 percent. the males are brad and sterilized in italy at the research center for agriculture and environment. in bologna, the process starts with egg production. and these cages, healthy mosquitoes, mates. the females are regularly fed blood from animals. without it. they can't produce x the within a week the x mature into larva and enter the pupil stage. that's when males are separated from the females to a method known as dimensional analysis. because males are smaller than females, they can be sorted out based on size,

the mail to pay or then expose to x rays in the water, which affects their sensitive reproductive organs. the treatment doesn't kill them, but it does make them in for a child. one drawback is that the procedure is still very expensive. sterilizing a 1000 of the insects costs around $60.00 euro. so the bill for this year is experiment is around $200000.00 euros in total. but if it succeeds and production is scaled up, that will reduce costs dramatically based. if it's sorry, that same pi odyssey is time convinced that the process will very much cheaper in the field yet, and that this will also be now, especially as commercial interest starts play around all that in the system here. but maybe we can fine. the technique is not really old, it's expensive, but we have to scale the top to make it cheaper. last enough that's not me to speak of yet. this the method works. the project will be promoted internationally in

cooperation with the w h o. especially in countries where tiger mosquitoes regularly transmit, potentially deadly diseases type and most of the toys can transmit viruses from one host to the next like the west nile virus, which mainly infects the coverage by the by to fact. however, it also sometimes ends up in human pathogens that makes it jump from animals to humans known as so in most he's probably a growing problem. research team and after care is trying to detect them out at any stage before they can potentially leads to a fund demik. swapping one of the camels, a to research firm and kenya, camels are commonly kept as life stuck in the country and often have close contacts with a human keep is reason enough for the researches to investigate what's the animal's

head might be carrying the passage in the causes the disease caused must a relative of the virus that causes k 5th 19 in humans cells, copeland and musk of bloomington family, which is quite a corner of a. that's funny. i bet families is composed of of many other viruses which are highly infectious and pretended to human human beings. and this tend to be 0 to get his means be able to, to meet for monday most. and the transfer respect to humans does show malloy and his team have seen those signs of miles around the moles among them talk to could also carries do enough to capacitance the livestock farmers like so most of the play live in very close proximity to the around animals, so the reset to visit regularly to ask about any symptoms of disease. his animals might shy one, and they also take blood samples from those comfortable and owners for analysis and allow them they're going to need, you know, you want to in this household. they have more than 60 capital,

so picking 10 gives us some good the indication, or the special nice in the, in the house. you don't have to sample all of them. but you can pick a sample that is physically political, the total number of so you'll get the same information to prevent the potential spread of passages and select the one that causes the foot and mouth disease from one had to the next. the team regularly this in fact that they, they also educate the farmers about prevention in that place. he's also there, i go back to the example i gave you a goose l o says so um that is a manual that he's infected, tends to be tied to the bacteria in may. so if you make you add him all and you don't violate a new ticket tool, then you start the chance of picking the infection. the reset just return with the samples to the what that will be. centrifuge the stair and obtain this then tested

for a range of passages, one infections rise, and this posts of kenya. james of taco, is the 1st to know and takes the necessary time to meshes, which include distributing free medicines. they're looking at city this we to contest for money most on money and humans. one is called lucy lucy's. the other one is called the que fever, and the other one is to be fully fee of a light us. so for these 3, we can detect between both animals and humans. and so the system that we have collected here, we'd be tested to find out noise talk talk at the 1st as most kilimanjaro. the most like to is take blood samples from animals to test the mill up. fortunately, that's the no major outbreaks of noval passages in the region or even worrying mutations. but wild and domesticated animals live practically side by side here, x xbox, where we're either to zoom enough take disease, could develop in kenya. there is

a lot of mutations expected due to the changes and then right them in the climate change and also the land use buttons and their population precious as well brought about changes that actually them, you did the engines. this is closing agents, adam rejecting the india out. frederick subaru and a colleague, detective resellers system faction today in a cow. they examined the animal, will be treated with antibiotics to stop the fever causing disease. that will say us to determine whether they are, you know, has been infected. they do cause as soon as they reduce and also, and cutting down from us to use the productivity or for the retina practitioners to put in to use the higher level of drugs. we close at the moment that no, no antibiotics coming up and most of them know at assistance. as the climate had changes dramatically severely of expect moves, they will not take pathogens to a parent and spread tight controls and needed in kenya and 12 wide.

those controls will have to keep track of viruses like one code a l s. b, which was only discovered in ne china or in 2017 counties by takes it might be able to infect humans and codes flu like symptoms that at least initially resembled those close by table and step, lightest pots, the disease that is wide spread and many pounds if you're including switzerland, new tech born viruses spreading and this patch of forest. that's why scientists from the university of the rigs institute of biology have come hunting for them here. ranging about a 100 meters on either side of the path. they searched through the undergrowth for the parasitic arachnids in 2017, a virus tentatively named

a l. s. v was discovered in text and a long shot engine, china. it's thought to have caused disease symptoms and humans. in the fall of 2022, coronado clifford and his team detected the virus and checks in switzerland for the 1st time. made of off the customer, we expect to to find tick borne and stuff. a lot. just viruses and we did i list a list, v o, a long shot and virus that was a fluke. the bones of course, is biologist. it was exciting to discover it in switzerland. it's exciting because practically nothing is known about this virus from a biological perspective. and we've now also decided to investigate the vars in the lab with molecular biology methods level and when they come out the adobe symbol. so at regular intervals, the team collects checks that specific locations. this can also help determine how concentrations of the virus and the text changes. after half an hour,

it's time to stop and count them 1st. although it's rainy and just 14 degrees celsius, outside the scientists were able to find 15 tags and different stages of development to move on. as the rack nets they've collected are sent to the viral logical institutes loud in zurich. that's where the real work begins. they'll just say kind of gone to the tech's, actually have a very hard shell that we know have to crack open, so to speak, to home. ok. we have to crush them. oh, how much noise them as we say in order to get that the nuclear assets that are inside corners, slave for records, the proceedings step by step. the crushed tick is checked for all the

genetic material. it contains not just from the animal itself, but also the fund guy, bacteria and viruses such as a l. s. v that it carries. determining the structure of the virus is a necessary step to developing a blood test for detecting a l. s. v. in humans. an important step for the virus ologist, but also for switzerland's physicians had 0 university hospital last summer. the number of patients with tech bites who later reported symptoms like fever, severe headaches, and impaired consciousness, roads. there appeared to be a clear connection, but somehow it didn't add up my thoughts. and so i could ask nothing to stop by looking 1st for a frequent tick borne diseases such as t

b. e. take go in and set for light to 2nd or live disease, sorry home. you check that in particular when a patient remembers it take bite in the past. and that's what you look for 1st time . and surprisingly, we've had a large number of patients with these pathogens and not being detected by them. so we've started looking in other directions. could the sufferers be infected with a l. s. v. to find out neurologist toby as a vice recently send for the patient samples to coordinate flavors, laboratory for analysis. it isn't the i guess button. it's a big moment to, to, if the passage in is to take to do it would really be for the 1st time in humans. and i'm just seeing how common it is in tex. we're curious to see if it can also be detected, inpatient. so that would help us and i think that's what on 5 to 6 months later, the results are finally available. 20 to 25 percent of the patient samples tested positive for a l s. v. now

a 2nd test has to be conducted to confirm the 1st one. at the moment, it's impossible to say how much of a health risk a list be actually poses. but cornell slave for it says, even if the suspicion is confirmed, there's no reason to panic. if necessary, it shouldn't be too difficult to develop an effective protective vaccine by the way, to excel and insects, but a rockets which i have 8 legs instead of 6. and they've been around the 500000000 years. so they have always known before the age of the dinosaurs and other speak sees have been around for quite a while as well. david from colombia centers, this question on the topic are animal species present today that survive the age of the dinosaurs? some 66000000 years ago, a 14 kilometer wide asteroid slammed into the earth,

triggering a mass extinction. within seconds, the space rock vaporized across the earth, fires ranged and volcanoes erupt. it within a few days, the earth was blanketed in darkness. the deadly ice age that followed lasted for years. acid rain transformed the ocean's vegetation died. 3 quarters of all species were wiped out. of today's rep titles may resemble many dinosaurs, but in most cases they have little in common with their forebears. unlike crocodiles, a pre historic relative of the crocodile emerged 250000000 years ago and crocodiles, our ultimate survivors, the almost anything and can go for long periods without food. turtles are also one of the oldest living reptile groups. the earliest known turtles swim the world's

oceans 225000000 years ago and looked remarkably similar to those solitary ancient creatures that exist today. the sting rays have roamed the oceans for even longer. these primordial creatures belong to the cartilage and is fish family. as to sharks, they were already among the top creditors of the oceans and the age of the dinosaurs, the catastrophic consequences of the asteroid had little impact on sharp biodiversity . horseshoe crabs haven't changed much in 150000000 years. that's because these living fossils can survive and water a varying salting. this and warm of the birds evolved from a group of dinosaurs that survived thanks to their feathers, chickens and officers or the closest living relatives of toronto. saunders wrecks

sounds improbable. just compare how they walk right, why do you have that science question, then send it in as a video, text or voice mail? if we answer your clearly on it will send you a little surprise as a think the when sudden insights, multiply on mass, it can recover. co forrest in your best name, treat as drawing insights. is the bunk be talk about for the last but to yes, stop pest. let's have competition for the title from overseas. the a some long own people is not also found in europe and north america. and the city was trees on the menu. the asian long home retail is native to china,

taiwan and the korean peninsula. once established in other places, it's an intruder that's almost impossible to deal with. only selling the trees that invites can help and that's on a ground scale. not far from the village. if so in central switzerland, the largest infestation of the asian loan home beach and in the country sofa has come to light. make out sona. he wants to become toner for the son is trying to get the situation under control by my medicaid. this 3 showed clear signs of an asian longhorns beetle infestation me so you can see it clearly and as many for whole as you can also see these marble galleries, what kind of damage they do to a tree that's in a cross section cotton and all the circular holes typically have to be till i made

one adult, eat the way to the surface of the developing inside the tree. so you know, after imagine from that heist trees the adult be tools made. females usually lay directs on the same trees. they themselves fed on as long as when the ex hunch, the new generation of lot of people that way back into the wood infestation will generally killer tree. eventually they rarely survive remix. so you can see how it gets riddled with holes and they destroy all the vascular bundles. the tree can't absorb water and nutrients anymore. so what donald a couple to deprives the past of its food sol, suite over a 1000 trees of already been felt it's only a reputation meshes, have not been enough so far to limit the be to spread in mid march. another infestation was discovered in this nearby structure forest. now the trees have to be felt hairs, while the asian loan home to be told poses

a huge threat to the citrus trees. it causes billions of dollars in damage worldwide. the insect was discovered in switzerland for the 1st time in 2011 here in the pool to fossil in a pallet of granite from china. it was then found in other parts of the country. the fight against the beat will cost millions, but it was a success at least for a while. for 3 years, switzerland's was considered free of infestation until the insect showed up again. and so everything is now being done to prevent it from spreading again. that means felling and destroying the citrus trees within a $100.00 me to radius around and infestation. and it has to be done before the adult so much. but the source also helps protect the village from lum slides. so any counter measures and fighting the past have to be carefully

way dock. they should defect typically come by the asian loan won't be too, but not weak and the protective force too much striking the balance is tricky. within the policy they might be a we've done that by removing ground vegetation like hazel bushes on small willows, which are not the central to the protective effect of great. then we take out the big trees that have a lot of ranches and or, and tangled with other tre licensing. but we're trying to leave the rest as much as possible while keeping a close eye on the situation. and so that we fight the beetle and maintain the forest. it's a protective effect, a sense hopefully sol suite the trees, hair, a tex. yes, we can with the help of specially trained dogs off to the beach who was 1st discovered and so comes to the lee and his animals were assigned to investigate the extent of the infestation around the village. cause

boston extended low, but i almost couldn't believe it. i was amazed how extensive it was and how many were on certain trees or farm. we caught bugs picked them off like apples too. and that's pretty impressive when you know what a single beetle can do. softly, either a single female can lay $200.00 egg somewhere. and this evening, i'm sorry, on the tie it all black. it's time to check whether all the beatles really have been wiped out by the falling meshes. the past is only considered eradicated as for years past be so free. even just one surviving female or her rags can lead to a massive infestation. again, the following. yeah. the measures this time has cost around to 1000000 your rise to into the sun comes through its own absolutely necessary. because right now we can still contain it towards the end. if we don't do anything, it will spiral out of control and then it'll really have consequences for everybody

. the color, especially for the ecology here. a claim of we need these really they provide shade, create corridors for cooler air and creatures. live in the lab and we need the for as little so it has an economic and social consequences of sell all the consequences. the monitoring and selling continues dimensions might seem drastic, but make out sign of confidence that then necessary to eradicate the past. and once again, clear switzerland, the district to speak tools the by the way, went out last. they won't take till they haven't take that we on. so you'll questions and clips that are fun, accurate on to the point. but also based on the latest research one to discover even more from the world of science than photo s d w science. and

that's it. so this week on tomorrow, and today the science show on dw, thanks for joining us and see you again next time, bye for now the, the, the

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