Tsis muaj dab tsi piv rau twilight nyob rau lub caij ntuj sov. Lub suab nrov cicada tau muaj zog dua, lub hnub nws thiaj li pib teeb, thiab koj lub teeb lub teeb flickers rau, teeb pom kev ntau ntawm cov kab me me ya ncig lub teeb. Koj cov khaub ncaws kuj pib tsw zoo li hluav taws kub.
Ntawm chav kawm, feem ntau ntawm cov kab buzzing no yog innocuous, tab sis yog tias yoov tshaj cum pib swarm, khaus khaus yog muab. Thiab lub sijhawm ntawd, nws ua rau muaj kev nkag siab yog tias koj xav ua txhua yam kev ceev faj kom txo cov tsiaj roaming ncig koj lub tsev.
Dab tsi yog cov lus qhia uas entomologists-tseem hu ua cov kws kho kab mob-pom zoo? Hloov koj lub qhov muag teeb nrog LEDs, thiab ua tib zoo saib xyuas cov xim.
Tab sis vim li cas qee cov kab kos rau lub teeb?
Hauv qhov tseeb, qhov no yog cov lus nug uas tseem tab tom tshawb nrhiav. Yog vim li cas vim li cas qee cov kab laum yog tsis paub, raws li ecologist Howard Russell, MS, ntawm Michigan State University.
Tsis tas li ntawd, raws li Doug Webb, tus thawj coj ntawm kev pabcuam kev pabcuam ntawm Terminix International thiab tus kws tshaj lij kws paub txog kev noj qab haus huv, "tsis yog txhua tus kab yog nyiam rau lub teeb." Nws txhais tau tias phototaxis yog kos rau lub teeb. Qee cov kab, zoo li kab laum, yog tiag tiag attracted rau qhov tsaus ntuj thiab yog tiag repulsed los ntawm lub teeb.
Ntawm cov kab kab uas yog phototactic, los yog kos rau lub teeb frequencies, yog yoov, npauj, thiab yoov tshaj cum.
Ib qho lus piav qhia rau lawv txoj kev nyiam ntawm lub teeb? Raws li Frank Meek, tus thawj saib xyuas kev pabcuam thev naus laus zis ntawm Rollins, "Nws yog kev khiav tawm ntawm qhov chaw lossis tus neeg tua tsiaj - lub teeb tsim txoj hauv kev meej."
Raws li Emory Matts, ib tus kws tshaj lij uas muaj ntawv pov thawj rau Western Exterminator, lwm qhov kev xav yog tias cov kab ya thaum hmo ntuj tuaj yeem siv lub teeb raws li kev taw qhia, zoo li peb nyob ntawm lub teeb ntawm lub hli los coj peb.
Ib yam li txhua tus tsiaj nyob nrhiav qhov chaw nyab xeeb, Meek ntxiv, nws kuj tseem muaj peev xwm hais tias qee cov kab raug nyiam los ntawm cov cua sov uas tsim los ntawm qee lub teeb.
