Qhov ua tau zoo ntawm cov tshuaj tua kab rau cov yoov tshaj cum tuaj yeem sib txawv ntawm ntau lub sijhawm ntawm hnub, nrog rau nruab hnub thiab hmo ntuj. Ib txoj kev tshawb fawb hauv Florida pom tias cov yoov tshaj cum Aedes aegypti qus uas tiv taus permethrin muaj kev rhiab heev rau cov tshuaj tua kab ntawm ib tag hmo thiab hnub tuaj. Tom qab ntawd qhov kev tiv taus nce ntxiv thoob plaws hnub, thaum cov yoov tshaj cum muaj zog tshaj plaws, nce siab tshaj plaws thaum tsaus ntuj thiab thawj ib nrab ntawm hmo ntuj.
Cov kev tshawb pom ntawm kev tshawb fawb uas cov kws tshawb fawb ntawm University of Florida (UF) tau ua muaj cov txiaj ntsig zoo raukev tswj kab tsuagcov kws tshaj lij, uas ua rau lawv siv cov tshuaj tua kab tau zoo dua, txuag nyiaj, thiab txo lawv cov kev cuam tshuam rau ib puag ncig. "Peb pom tias cov koob tshuaj ntau tshaj plaws ntawmpermethrinxav tau tua cov yoov tshaj cum thaum 6 teev tsaus ntuj thiab 10 teev tsaus ntuj Cov ntaub ntawv no qhia tias permethrin yuav ua tau zoo dua thaum siv ntawm ib tag hmo thiab kaj ntug (6 teev sawv ntxov) dua li thaum tsaus ntuj (kwv yees li 6 teev tsaus ntuj), "said Lt. Sierra Schloop, tus sau ntawv ntawm txoj kev tshawb fawb. Txoj kev tshawb fawb tau luam tawm hauv Journal of Medical Entomology thaum Lub Ob Hlis. Schloop, tus tub ceev xwm entomology nrog UF Naval Sealift Command, yog ib tug tub ntxhais kawm qib siab hauv entomology ntawm University of Florida nrog rau Eva Buckner, Ph.D., tus sau ntawv laus ntawm txoj kev tshawb fawb.
Tej zaum yuav zoo li kev nkag siab zoo tias lub sijhawm zoo tshaj plaws los siv tshuaj tua kab rau cov yoov tshaj cum yog thaum lawv feem ntau yuav nrov nrov, ya, thiab tom, tab sis qhov ntawd tsis yog txhua lub sijhawm, tsawg kawg yog hauv kev sim nrog permethrin, ib qho ntawm ob hom tshuaj tua kab uas siv ntau tshaj plaws hauv Tebchaws Meskas, uas tau siv hauv kev tshawb fawb no. Cov yoov tshaj cum Aedes aegypti feem ntau tom thaum nruab hnub, ob qho tib si hauv tsev thiab sab nraum zoov, thiab nquag tshaj plaws li ob teev tom qab hnub tuaj thiab ob peb teev ua ntej hnub poob. Lub teeb dag tuaj yeem ncua lub sijhawm uas lawv tuaj yeem siv nyob rau hauv qhov tsaus ntuj.
Tus kab Aedes aegypti (feem ntau hu ua tus yoov tshaj cum uas ua rau mob ua npaws daj) pom muaj nyob rau txhua lub teb chaws tshwj tsis yog Antarctica thiab yog tus kab mob uas ua rau mob chikungunya, dengue, yellow fever, thiab Zika. Nws tau txuas nrog rau kev sib kis ntawm ntau yam kab mob uas kis thoob plaws hauv Florida.
Txawm li cas los xij, Schluep tau hais tias qhov tseeb rau ib hom kab laug sab hauv Florida tej zaum yuav tsis muaj tseeb rau lwm thaj chaw. Ntau yam tseem ceeb, xws li qhov chaw nyob, tuaj yeem ua rau cov txiaj ntsig ntawm kev txheeb xyuas genome ntawm ib tug kab laug sab tshwj xeeb txawv ntawm cov Chihuahuas thiab Great Danes. Yog li ntawd, nws hais tias, cov kev tshawb pom ntawm kev tshawb fawb tsuas yog siv rau tus kab laug sab ua npaws daj hauv Florida xwb.
Txawm li cas los xij, nws hais tias muaj ib qho lus ceeb toom. Cov ntsiab lus ntawm txoj kev tshawb fawb no tuaj yeem siv dav dav los pab peb nkag siab zoo dua lwm cov pej xeem ntawm hom tsiaj.
Ib qho tseem ceeb ntawm txoj kev tshawb no qhia tau hais tias qee cov noob caj noob ces uas tsim cov enzymes uas metabolize thiab detoxify permethrin kuj raug cuam tshuam los ntawm kev hloov pauv ntawm lub teeb ci ntsa iab dhau 24 teev. Txoj kev tshawb no tsom mus rau tsib lub noob caj noob ces xwb, tab sis cov txiaj ntsig tuaj yeem raug kwv yees rau lwm cov noob caj noob ces sab nraum txoj kev tshawb no.
"Vim yog peb paub txog cov txheej txheem no thiab txog kev tshawb fawb txog cov yoov tshaj cum, nws yog qhov tsim nyog los nthuav lub tswv yim no mus dhau cov noob caj noob ces no thiab cov pej xeem qus no," Schluep hais.
Qhov kev qhia tawm lossis kev ua haujlwm ntawm cov noob no pib nce ntxiv tom qab 2 teev tsaus ntuj thiab nce siab tshaj plaws hauv qhov tsaus ntuj ntawm 6 teev tsaus ntuj thiab 2 teev sawv ntxov Schlup taw qhia tias ntawm ntau cov noob uas koom nrog hauv cov txheej txheem no, tsuas yog tsib tus tau kawm. Nws hais tias qhov no tej zaum yog vim thaum cov noob no ua haujlwm hnyav, kev tshem tawm cov tshuaj lom hauv lub cev tau txhim kho. Cov enzymes tuaj yeem khaws cia rau kev siv tom qab lawv cov khoom tsim qeeb.
"Kev nkag siab zoo dua txog kev hloov pauv txhua hnub ntawm kev tiv thaiv kab tsuag uas ua los ntawm cov enzymes detoxification hauv Aedes aegypti yuav tso cai rau kev siv cov tshuaj tua kab thaum lub sijhawm uas muaj kev cuam tshuam siab tshaj plaws thiab cov enzyme detoxification ua haujlwm qis tshaj plaws," nws hais.
Kev hloov pauv txhua hnub ntawm kev rhiab heev ntawm permethrin thiab kev qhia txog cov noob caj noob ces hauv Aedes aegypti (Diptera: Culicidae) hauv Florida
Ed Ricciuti yog ib tug kws sau xov xwm, kws sau ntawv, thiab kws tshawb fawb txog ntuj tsim teb raug uas tau sau ntawv ntau tshaj ib nrab xyoo pua. Nws phau ntawv tshiab tshaj plaws yog Backyard Bears: Big Animals, Suburban Sprawl, thiab New Urban Jungle (Countryman Press, Lub Rau Hli 2014). Nws cov cim taw nyob thoob plaws ntiaj teb. Nws tshwj xeeb hauv xwm, kev tshawb fawb, kev txuag, thiab kev ua haujlwm raws li txoj cai. Nws yog ib tug neeg saib xyuas ntawm New York Zoological Society thiab tam sim no ua haujlwm rau Wildlife Conservation Society. Tej zaum nws yog tib tug neeg ntawm Manhattan's 57th Street uas raug tom los ntawm coati.
Cov yoov tshaj cum Aedes scapularis tsuas yog tau pom ib zaug xwb, xyoo 1945 hauv Florida. Txawm li cas los xij, kev tshawb fawb tshiab ntawm cov qauv yoov tshaj cum uas tau sau los ntawm xyoo 2020 pom tias cov yoov tshaj cum Aedes scapularis tam sim no tau tsim lawv tus kheej hauv Miami-Dade thiab Broward counties ntawm Florida mainland. [Nyeem ntxiv]
Cov kab ntsaum uas muaj lub taub hau zoo li lub khob hliav qab yog cov kab uas nyob hauv Central thiab South America thiab tsuas pom muaj nyob rau hauv ob qho chaw hauv Tebchaws Meskas: Dania Beach thiab Pompano Beach, Florida. Kev tshuaj xyuas caj ces tshiab ntawm ob pawg neeg no qhia tias lawv tau los ntawm tib qho kev tawm tsam. [Nyeem ntxiv]
Tom qab nrhiav pom tias cov yoov tshaj cum tuaj yeem tsiv mus deb heev siv cua siab, kev tshawb fawb ntxiv tab tom nthuav dav cov hom thiab ntau yam ntawm cov yoov tshaj cum uas koom nrog kev tsiv teb tsaws chaw - cov yam uas paub tseeb tias yuav ua rau kev siv zog los tiv thaiv kev kis tus kab mob malaria thiab lwm yam kab mob uas kis los ntawm yoov tshaj cum hauv Africa nyuaj. [Nyeem ntxiv]
Lub sijhawm tshaj tawm: Tsib Hlis-26-2025