Mphamvu ya mankhwala ophera udzudzu imatha kusiyana kwambiri nthawi zosiyanasiyana masana, komanso pakati pa usana ndi usiku. Kafukufuku ku Florida adapeza kuti udzudzu wakuthengo wa Aedes aegypti wosamva permethrin umakhala wovuta kwambiri kupha tizilombo pakati pausiku ndi kutuluka kwa dzuwa. Kukaniza kumawonjezeka tsiku lonse, pamene udzudzu unali wokangalika kwambiri, ukukwera madzulo ndi theka loyamba la usiku.
Zotsatira za kafukufuku wopangidwa ndi ofufuza a University of Florida (UF) zili ndi tanthauzo lalikulu pakuwononga tiziromboakatswiri, kuwalola kugwiritsa ntchito bwino mankhwala ophera tizilombo, kusunga ndalama, ndi kuchepetsa kuwononga kwawo chilengedwe. "Tidapeza kuti mlingo wapamwamba kwambiri wapermetrinanafunika kupha udzudzu pa 6 koloko masana ndi 10 koloko madzulo Deta iyi imasonyeza kuti permetrin ikhoza kukhala yothandiza kwambiri ikagwiritsidwa ntchito pakati pa usiku ndi m'bandakucha (6 am) kusiyana ndi madzulo (pafupifupi 6 koloko masana)," anatero Lt. Sierra Schloop, wolemba nawo kafukufukuyu. wophunzira wa udokotala mu entomology ku yunivesite ya Florida pamodzi ndi Eva Buckner, Ph.D., wolemba wamkulu wa phunziroli.
Zingawoneke ngati zomveka kuti nthawi yabwino yogwiritsira ntchito mankhwala ophera udzudzu ndi pamene nthawi zambiri amawombera, kuphulika, ndi kuluma, koma sizili choncho nthawi zonse, makamaka poyesera permethrin, imodzi mwa mankhwala awiri omwe amagwiritsidwa ntchito kwambiri polimbana ndi udzudzu ku United States, omwe anagwiritsidwa ntchito pa kafukufukuyu. Udzudzu wa Aedes aegypti umaluma makamaka masana, m'nyumba ndi kunja, ndipo umagwira kwambiri maola awiri dzuwa litatuluka komanso maola angapo dzuwa lisanalowe. Kuwala kochita kupanga kungatalikitse nthawi yomwe angakhale mumdima.
Udzudzu wa Aedes aegypti (womwe umadziwika kuti yellow fever) umapezeka kumayiko onse kupatula ku Antarctica ndipo ndiwotulutsa ma virus omwe amayambitsa chikungunya, dengue, yellow fever, ndi Zika. Zakhala zikugwirizana ndi kufalikira kwa matenda angapo omwe amapezeka ku Florida.
Komabe, Schluep adanena kuti zomwe zili zowona kwa mtundu umodzi wa udzudzu ku Florida sizingakhale zoona kumadera ena. Zinthu zosiyanasiyana, monga malo, zimatha kupangitsa kuti zotsatira za ma genome a udzudzu azisiyana ndi a Chihuahuas ndi Great Danes. Chifukwa chake, adatsindika kuti zomwe apeza pa kafukufukuyu zimagwira ntchito ku udzudzu wa yellow fever ku Florida.
Pali chenjezo limodzi, komabe, adatero. Zomwe zapezeka mu kafukufukuyu zitha kupangidwa kuti zitithandize kumvetsetsa bwino mitundu ina ya zamoyo.
Kupeza kwakukulu kwa kafukufukuyu kunasonyeza kuti majini ena omwe amapanga ma enzyme omwe amatsuka ndi kusokoneza permetrin adakhudzidwanso ndi kusintha kwa kuwala kwa maola a 24. Kafukufukuyu adangoyang'ana pa majini asanu okha, koma zotsatira zake zitha kuwonjezeredwa kumitundu ina kunja kwa kafukufukuyu.
"Poganizira zomwe tikudziwa za njirazi komanso za biology ya udzudzu, ndizomveka kukulitsa lingaliroli kupitilira majini awa komanso anthu akutchire," adatero Schluep.
Mawu kapena ntchito ya majiniwa imayamba kuwonjezeka pambuyo pa 2 koloko masana ndikukwera mumdima pakati pa 6 pm ndi 2 am Schlup akuwonetsa kuti mwa majini ambiri omwe akugwira nawo ntchitoyi, asanu okha ndi omwe adaphunziridwa. Akuti izi zitha kuchitika chifukwa majiniwa akamagwira ntchito molimbika, kutulutsa timadzi tambiri kumawonjezeka. Ma enzymes amatha kusungidwa kuti agwiritsidwe ntchito pambuyo pochedwa.
"Kumvetsetsa bwino kwa kusiyana kwa diurnal kukana kwa tizilombo toyambitsa matenda komwe kumayambitsidwa ndi ma enzymes detoxification ku Aedes aegypti kungalole kugwiritsa ntchito mankhwala ophera tizilombo panthawi yomwe chiwopsezo chimakhala chachikulu kwambiri komanso ntchito ya enzyme ya detoxification ndiyotsika kwambiri," adatero.
"Kusintha kwa Diurnal mu permetrin sensitivity ndi metabolic gene expression in Aedes aegypti (Diptera: Culicidae) ku Florida"
Ed Ricciuti ndi mtolankhani, wolemba, komanso wazachilengedwe yemwe wakhala akulemba kwazaka zopitilira theka. Buku lake laposachedwa ndi Backyard Bears: Big Animals, Suburban Sprawl, ndi New Urban Jungle (Countryman Press, June 2014). Mapazi ake ali padziko lonse lapansi. Iye amachita chidwi kwambiri ndi chilengedwe, sayansi, kasamalidwe ka zinthu komanso kakakamira malamulo. Poyamba anali woyang'anira ku New York Zoological Society ndipo tsopano akugwira ntchito ku Wildlife Conservation Society. Atha kukhala munthu yekhayo pa 57th Street ku Manhattan yemwe adalumidwa ndi coati.
Udzudzu wa Aedes scapularis wapezeka kale kamodzi, mu 1945 ku Florida. Komabe, kafukufuku watsopano wa zitsanzo za udzudzu zomwe zinasonkhanitsidwa mu 2020 zidapeza kuti udzudzu wa Aedes scapularis tsopano wakhazikika m'madera a Miami-Dade ndi Broward ku Florida. [Werengani zambiri]
Chiswe chokhala ndi mutu wa cone chimachokera ku Central ndi South America ndipo amapezeka m'malo awiri okha ku United States: Dania Beach ndi Pompano Beach, Florida. Kuwunika kwatsopano kwa majini kwa anthu awiriwa kukuwonetsa kuti adachokera ku kuwukiridwa komweko. [Werengani zambiri]
Pambuyo pozindikira kuti udzudzu ukhoza kusuntha maulendo ataliatali pogwiritsa ntchito mphepo yamkuntho, kafukufuku wowonjezereka akukulitsa mitundu ndi mitundu ya udzudzu womwe umakhudzidwa ndi kusamuka koteroko - zinthu zomwe zikuwonetsetsa kuti zilepheretsa kufalikira kwa malungo ndi matenda ena ofalitsidwa ndi udzudzu ku Africa. [Werengani zambiri]
Nthawi yotumiza: May-26-2025