of the things 30 minutes on dw world in progress pop calls to everyone who wants to know more about this topic that concern us about this story is beyond the headline world in progress. the w cost cost 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

today. detail to use science magazine. welcome solutions. this lab is teeming with asian tiger mosquito. it's in every stage of development, from larvae to adults. how leo node or flaps show 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 and southern switzerland researchers will release a total of $2000000.00 of the insects this year for travel. christopher st professionally. since mid may slot show has been releasing hard to your mosquitoes

weekly, at around 70 different locations and more code to the people who live here. don't have to worry about bites though. even if it feels like they should get, this means they need to worry the males male starting by 1st they just fly around and then they die after a few days established and you get time in the infer tile. type your 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 and off to making one's females become and thoughts while for life should

been constantly misled. 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 the 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 produce x, the within a week, the x mature into a lot of a 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 the x rays in the water, which affects their sensitive reproductive organs. the treatment doesn't kill them, but it does make them in for 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, i'm convinced that the price for a much cheaper in the field, yet on that, that's welcoming that especially as commercial interest starts play around all the time. the system here that's really can find 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 let me just be looking at 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. taken most of the toys can transmit viruses from one host to the next, like the west nile virus, which mainly infects the cavities by the vitamin. in fact, however, it also sometimes ends up in human pathogens that makes it jump from animals to humans known as so in most east power growing problem, research team and after care is trying to detect them don't any stage before they can potentially lead to a fun demik well being one of the criminals that to research firm and kenya, campbells 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 and that causes a disease called must a relative of the virus that causes k 5th 19 in humans, south cove and, and must club of bloomington familiar, which is quite a corner of it. that's funny. i bet families goes composed of, of many other viruses which are highly infectious and public indic to human human beings. and this tend to be, as you know, to get his means be able to be made for money most and the transfer miss paid to humans. this on the lawyer on his team have seen those signs of mas with all the round tables among them talk to could also carries do enough to capacitance. life stop farm is like so more thought i play live in very close proximity to the random old. so the research has visit regularly to ask about any symptoms of diseases animals might shy with. and they also take blood samples from dice, 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 i'll see will get the same information to prevent the potential spread of passage and select the one that causes inputs and mouth disease from one had to the next. the team regularly disinfect that, but they also educate the farmers about prevention that face. he's also there, i go back to the example. i gave you a boost analysis. so um they have 90, more that he's infected, tends to be tied to the bacteria in may. so if you may look you animal and you don't boil it, a new ticket tool, then you start the chance of picking the infection. the reset, just return with the samples to the weather 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 toko, is the 1st to know and takes the necessary townsend meshes, which include distributing free medicines, they're looking at city dc. this we 2 contests for money most i money and humans. one is called lucy lucy's. the other one is called the queue fever, and the other one is to be fully feeble by us. so for these 3, we can detect it in both animals on humans. and so the system that we have collected here will be tested to find out. the only top talks that's a 1st, as most kilimanjaro. the most sy, communities had also live close to the capital. so the risk of diseases, jumping from animals to humans is high. even so many people don't know enough about how to protect themselves. one thing i'm going to, to get our colleagues that suffered from

a number of diseases that we don't recognize in getting the more of them, for example, came from water. i love the, you know, my g p. s. other infections can be transmitted by biting insects. so, but the spread of disease 3 does evil to oppose is the biggest danger to live stuck farm. and it's like kitchen bay to eat meat from the account number of the problem has been exacerbated by extreme drought him kenya is now that there's drought. farmers are suffering many losses. they've lost a lot of live stock and we can hardly identify the diseases and the live stock. they may be just suffering from hunger. c c fear to the doctors take blood samples from animals to test develop. fortunately that the know you major outbreaks of noval passages in the region or even worry and mutations. but wild and domesticated animals live practically side by side here. x. that's where we're either to zoom

enough take disease could develop in kenya. there is a lot of mutations expected. due to the changes in the environment, the climate change and also the land use buttons and their population precious as well brought about changes that actually the avenue that the engines, the cisco thing agents, adam rejecting the india out. frederick subaru and a colleague detected a bruce hello system faction. today in a cow, they examined the animal will be treated with antibiotics to stop the fever causing disease. but the vet also has to determine whether the or you know, has been infected. they do cause as soon as they reduce and also and cutting them from us to use the prudently or for the red noted practitioners to put in to use the higher level drugs. because at the moment that no, no antibiotics coming up, and most of them know ad assistant as the climate hedge ranges dramatically severely expects moves, they will not take passages to

a pit 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 stuff. a lightest pots, a disease that is widespread in 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 tx and a long shun gen 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 expected to find take the phone and stuff. a lot of viruses and we did, i live on a less v or a long shot, a virus that was a fluke. the bones, of course, is by role. logistic 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 virus in the lab with molecular biology methods. example monday cannot be a little consumable. so at regular intervals, the team collect checks that specific locations of 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 techs and different stages of development to move to the right minutes they've collected, are sent to the viral logical institutes loud in zurich. that's where the real work begins to say kind i got the takes, i actually have a very hard shell that we know have to crack open, so to speak, to home. ok. we have to crush them all. how much noise them, as we say in order to get at 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 phone 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 biologist, but also for switzerland's physicians had sewerage university hospital last summer. the number of patients with tech bites who later reported symptoms like fever, severe headaches, and impaired consciousness, roads. there appear to be a clear connection, but somehow it didn't add up or my thoughts. and so i guess not the thought by

looking 1st for a frequent tick borne diseases such as t b. e. take born and suffer light to 2nd or live disease. sorry home, you check that in particular when a patient remembers a 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 passages and not being detected by them. so we've started looking in other directions, a good the sufferers be infected with a l. s. v. to find out neurologist to b as in vice recently, send 40 patient samples to coordinate flavors, laboratory for analysis. it isn't the exit button, it's a big moment 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 this was on 5 to 6 months later, the results are finally available. 20 to 25 percent of the patients samples tested

positive for a less fee. 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 flavor, it says, even if the suspicion is confirmed, there's no reason to panic. if necessary, it shouldn't be too difficult to develop into effective protective vaccine by the way, to excel and insects, but a rockets which are 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 speech sees have been around for quite a while as well. the crocodile emerged 250000000 years ago and crocodiles are ultimate survivors. the almost anything and can go for long periods without food.

turtles are also one of the oldest living rep tile 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 spring 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 predators of the oceans and the age of the dinosaurs, the catastrophic consequences of the asteroid have 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 birds evolved from a group of dinosaurs that survived thanks to their feathers, chickens and all searches are the closest living relatives of toronto. saunders

wrecks sounds improbable. just compare how they walk. let us read, why do you have it science question, then send it in as a video, text or voice mail. if we see your clearly on it, we'll send you a little surprised as a thank the when sudden insights, multiply on mass, it can recover the cold forest in europe. the best name treatise drawing insight is the bunk. be talk about for the last, but to you. stop pest us have competition for the title from overseas. the a some long home people is not also found in europe and north america and to city with 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 grand scale or not saw from the village of cell in central switzerland, the largest infestation of the asian long beach and in the country. some fall has come to light. make out sona. he works for the come toner for the son is trying to get the situation under control. by my medical say this 3 showed clear signs of an asian longhorn beetle infestation. you can see it clearly and these many bore hold. you can also see these marble galleries, what kind of damage they do to a tree. it'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 heis trees, the adult be tools mate, females usually laid directs on the same trees. they themselves don't. as long as, when the ex hunch, the new generation of law, people the way back into the word, an infestation will generally kill a tree. eventually, they rarely survive. remix say, you can see how it gets riddled with holes, and they destroy all the vascular bundle. so the tree can't absorb water and nutrients anymore, so it donald a couple to deprives the past of its food. sol, suite over a 1000 trees of already been so here it's only a replication meshes. have not been enough so far to limit the be to spread in mid march, another infestation was discovered in this nearby stretch of forest. now the trees

have to be felt hairs, while the agent alone honed 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, hearing the polls, if possible, 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 aimed at fighting the past have to be carefully way doc. they should effectively combat the asian long whole be too, but not weak and the protective source too much striking the balance is tricky. within the policy then would be a we've done that by removing ground vegetation life, hazel bushes on small willows, which are not the central to the protective effect. please, then we take out the big tree that have a lot of rancho 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 6. 03 of the trees here at texas. yes. again, with the help of specially trained dogs for us to be to discuss discovered. and so comes to the lee and his animals were assigned to investigate the extent of the

infestation around the village. as far as the kind of live experience, i almost couldn't believe it. i was amazed how extensive it was and how many were on certain tree farm when we caught dogs picked them off like apples to and that's pretty impressive when you know what a single beetle can do shortly. either a single female can weigh $200.00 egg somewhere and this evening i'm so you won't die at all. like it's time to check whether all the beetles really have been wiped out by the falling meshes. the past is already considered eradicated is 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 a 1000000 years to implement the sun comes through. oh, 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, claim of we need these really they provide shades, create corridors for cooler air and creatures, live in the lab, and we need the for as little. so it has economic and social consequences of sell all the consequences. the monitoring and selling continues dimensions might seem drastic, but make outs on it as confidence that then necessary to eradicate the past. and once again, clear switzerland at the district to speak tools. the by the way went out last. i won't take talk to her and we'll take that we on cl questions, clips that are fun, accurate on to the points, 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

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