Lítium szermaradvány vizsgálata méhészeti termékekben
Kulcsszavak:
lítium-klorid, méhviasz, méz, szermaradvány, Apis mellifera, Varroa destructorAbsztrakt
A méhcsaládokra a legnagyobb veszélyt a nagy ázsiai méhatka (Varroa destructor) által okozott varroózis jelenti. A varroózis kezelésére jelenleg rendelkezésre álló hatóanyagok rezisztencia és szermaradvány problémákat okozhatnak, hatékonyságuk sem kielégítő minden esetben. A lítium sók, mint atka elleni potenciális hatóanyagok alternatívaként merültek fel 2018-ban. Azonban kevéssé ismert, hogy a lítiumos kezelések milyen mennyiségű szermaradványt hagyhatnak a méhészeti termékekben. A méheket a korábbi vizsgálatokban használt 25 mM lítiumos cukorsziruppal etettük, majd vizsgáltuk a lítium felhalmozódását és kiürülését 22 napon keresztül a méhekben és a méhészeti termékekben. A lítium koncentrációja a méhek teljes szervezetében a kezelést követő 4. napig emelkedett, majd visszaállt a kontroll szintre. A lítium-expozíció csak rövidtávon (<16 nap) volt hatással a fedetlen mézre, míg a fedett (érett) mézben a kísérlet végén is 22,5mg/kg szinten még kimutatható volt. A méhviasz a kísérlet teljes időtartama alatt lítium mentes maradt, ami az engedéllyel rendelkező szintetikus akaricidekkel összevetve előnyösnek mondható. Mindazonáltal, bár ígéretes hatóanyagnak tűnik a lítium, jövőbeni állatorvosi alkalmazásához további kutatásokra van szükség a méz szermaradvány tartalmát illetően.
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Copyright (c) 2024 Éva Kolics, Zsófi Sajtos, Kinga Mátyás, Kinga Szepesi, Izabella Solti, Gyöngyi Németh, János Taller, Edina Baranyai, András Specziár, Balázs Kolics
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