Forum PKP Gdynia - Wszystko o Polskiej Kolei Strona Główna

 Sweet Bait Lures Malaria Mosquitoes

Zobacz poprzedni temat :: Zobacz następny temat
Napisz nowy temat   Odpowiedz do tematu
Autor Wiadomość
zjs6g2j4u
User


Dołączył: 17 Gru 2010
Posty: 1003
Przeczytał: 0 tematów

Ostrzeżeń: 0/5
Skąd: England
Płeć: Kobieta

PostWysłany: Pon 9:41, 28 Lut 2011    Temat postu: Sweet Bait Lures Malaria Mosquitoes

Sweet Bait Lures Malaria Mosquitoes
Israeli researchers say they have developed a powerful bait that effectively attracts and kills malaria-infected mosquitoes but is completely harmless to humans and other animals. The toxic sugar bait developed by scientists at Hebrew University Medical Center in Jerusalem is made with a combination of fruit juice essences, which are attractive to mosquitoes, and boric acid - a mild,[link widoczny dla zalogowanych], inorganic powder that kills insects when they ingest it.
In experiments in a semi-arid region of Mali, in West Africa,[link widoczny dla zalogowanych], the bait - in this case a blend of boric acid with guava and honey-melon fragrances - was applied using a hand sprayer on the vegetation near a cluster of man-made ponds. These ponds are important dry-season water supplies for local villagers and their livestock. They are also breeding grounds for Anopheles gambiae, the mosquito that carries the most deadly form of malaria.
For comparison, investigators sprayed grasses and leaves near other ponds with a solution of sweet fragrances only. Both baits contained a dye that marked any mosquito making contact, so scientists could count how many had actually fed on the lure.Josef Schlein, a medical entomologist who led the study,[link widoczny dla zalogowanych], says the results after 38 days showed the bait containing both sweet fragrances and boric acid proved to be very effective at killing mosquitoes.
"In Mali,[link widoczny dla zalogowanych], we got down by some 80 percent, the females,[link widoczny dla zalogowanych], and 90 percent of the males," he said. "But the area is full of little ponds in there, so it is impossible to stop mosquitoes from flying from an untreated pond to a treated pond."At the control sites that were treated with fragrances only,[link widoczny dla zalogowanych], Schlein says upwards of 75 percent of mosquitoes fed on the fake bait.
Schlein explains most people don’t realize that female mosquitoes typically feed on sweet plant nectars to survive. Their more familiar blood meals,[link widoczny dla zalogowanych], when mosquitoes bite people,[link widoczny dla zalogowanych], are part of the reproductive cycle.The researchers’ goal now is to make a lure that’s even more irresistible to mosquitoes.
Research leader Josef Schlein notes that boric acid poses little risk to humans and other mammals,[link widoczny dla zalogowanych], so it’s possible a mosquito lure could be developed for use indoors. Given the non-toxic simplicity of this new bait,[link widoczny dla zalogowanych], the Hebrew University entomologist says it’s a marvel that other scientists didn't think of it sooner."Yes. It was also a real surprise to us,[link widoczny dla zalogowanych]," he said. "If they go somewhere and they are strongly attracted to something, what else do we want to do with mosquitoes except kill them?"
Beautiful and stylish [link widoczny dla zalogowanych] Boots for Women! Imagining that you walk on the street and wear a pair of [link widoczny dla zalogowanych] Boots ,both fashionable and comforbable,[link widoczny dla zalogowanych],which will make you become the focus in the treet.Combining the lady’s high heels grace and the greatest Jordan shoes classics,the Jordan High Heels boot is definitely your good choice.The whole design of this [link widoczny dla zalogowanych] is simple yet fashion.They can be easy to match with your dresses which will eliminate your worries about the wearing and matching problems.
相关的主题文章:


[link widoczny dla zalogowanych]


Post został pochwalony 0 razy
Powrót do góry
Zobacz profil autora
Wyświetl posty z ostatnich:   
Napisz nowy temat   Odpowiedz do tematu    Forum PKP Gdynia - Wszystko o Polskiej Kolei Strona Główna -> PKP Cargo Wszystkie czasy w strefie EET (Europa)
Strona 1 z 1

 
Skocz do:  
Nie możesz pisać nowych tematów
Nie możesz odpowiadać w tematach
Nie możesz zmieniać swoich postów
Nie możesz usuwać swoich postów
Nie możesz głosować w ankietach


fora.pl - załóż własne forum dyskusyjne za darmo
Powered by phpBB © 2001, 2005 phpBB Group
gBlue v1.3 // Theme created by Sopel & Programosy
Regulamin