Aw Williams
Snails sai dua li qhov xav tau, yooj yim npog ib meter ib teev. Qhov ntawd yog cov kws tshawb fawb ntawm University of Exeter pom thaum lawv taug qab 450 lub vaj qwj siv LEDs thiab UV xim. Yog li ntawd, cov mollusks kuj nyiam siv ib hom slime trail slipstream. Qhov tseeb tias snails txav nrawm heev muaj nws qhov tsis zoo: lub mob ntsws Angiostrongylus vasorum, a tus kab mob ua rau lub neej rau cov dev, mus nrog lawv. Nyob rau hauv Great Britain, ua tsaug rau xyoo nplua nuj nyob rau hauv qwj, nws twb kis los ntawm nws cov poj koob yawm txwv lub tsev nyob rau sab qab teb mus rau Scotland.
Snails ntawm txoj kev
Pab neeg no coj los ntawm ecologist Dave Hodgeson thawj zaug tau sau tseg cov haujlwm nocturnal ntawm cov qwj siv cov teeb ci LED txuas nrog cov tsiaj lub nraub qaum thiab cov ntaub ntawv teev sijhawm. Lawv kuj siv cov xim UV los ua kom pom cov kab ntawm cov tsiaj reptiles. Hodgeson tau hais tias "Cov txiaj ntsig tau pom cov qwj taug kev mus txog 25 meters hauv 24 teev," Hodgeson tau hais. Qhov kev sim 72-teev kuj tseem pom qhov pom ntawm cov tsiaj tshawb nrhiav lawv ib puag ncig, qhov chaw lawv nrhiav chaw nkaum, thiab lawv txav mus raws nraim li cas.
"Peb pom tias cov qwj txav mus rau hauv cov tsheb thauj khoom, zoo li piggybacking ntawm slime ntawm lwm cov qwj," hais tias ecologist. Qhov laj thawj rau qhov no yog qhov yooj yim. Yog li thaum lub mollusk ua raws txoj kev uas twb muaj lawm, nws zoo li slipstreaming, Hodgeson tau hais los ntawm BBC hais tias. Qhov no yog vim tus qwj txuag lub zog, thiab muaj peev xwm ua tau zoo heev. Raws li kev kwv yees, 30 mus rau 40 feem pua ntawm cov tsiaj reptiles 'lub zog xav tau yog vim kev tsim cov slime.
Parasites raug thauj
Cov txiaj ntsig tau suav nrog hauv "Slime Watch" tsab ntawv ceeb toom los ntawm British phiaj xwm Ua Lungworm Aware. Qhov no xav kos xim sai npaum li cas tus dev cab Angiostrongylus vasorum tuaj yeem kis tau nrog qwj. Cov dev tuaj yeem nqos tau yooj yim nrog cov slugs tsawg tshaj plaws uas pom ntawm cov khoom ua si lossis hauv cov pas dej, piv txwv li. Cov kab mob no nkag mus rau hauv lub ntsws thiab, nyob ntawm qhov hnyav ntawm tus kab mob, cov tsos mob muaj xws li haum rau hnoos, los ntshav, ntuav, thiab raws plab rau circulatory tsis ua hauj lwm. Yog tias muaj kev xav tias tus dev kis tus kab mob ntsws, tus kws kho tsiaj yuav tsum tau sab laj tam sim ntawd - ces tus kab mob kuj tuaj yeem kho tau yooj yim.
Tus kab mob parasite, uas yog thawj zaug tshwm sim hauv Fabkis, Denmark, thiab Askiv, tau kis ntau thiab ntau dua nyob rau xyoo tas los no, tsis yog hauv Tebchaws Askiv xwb. Dieter Barutzki los ntawm Freiburg Veterinary Laboratory tau luam tawm ib txoj kev tshawb fawb hauv 2010, raws li hom kab mob ntsws no tam sim no tau nthuav dav, tshwj xeeb tshaj yog nyob rau sab qab teb sab hnub poob ntawm lub teb chaws Yelemees. Nyob rau hauv lub teb chaws no, ib yam nkaus thiab, qwj yog ib qho tseem ceeb nruab nrab tus tswv tsev thiab yog li ua rau muaj kev pheej hmoo kis tus kab mob rau txiv neej tus phooj ywg zoo tshaj.