It seems that donkeys are exceptionally good at repelling deer ticks. Now, researchers on the College of Massachusetts Amherst (UMA) have harnessed that means to create a pure bug repellent that proved as efficient as DEET at preventing the pests.
Whereas they’re most well-known for spreading the debilitating and painful Lyme Illness, deer ticks additionally unfold a number of different bacterial and parasitic infections together with anaplasmosis and babesiosis.
The repellents DEET and permethrin are efficient at repelling the pests, however they’re pretty heavy-duty chemical compounds that may trigger pores and skin irritation and different unintended effects, though they’re typically thought of secure to make use of. Pure tick repellents similar to oil of lemon eucalyptus do exist, however they don’t seem to be often as efficient as DEET in retaining ticks away and have a tendency to not final as lengthy.
Enter the donkey.
The sebaceous glands of donkeys secrete a compound often known as (E)-2-octenal from their pores and skin. A small field study last year confirmed that volunteers carrying a slow-release gadget that emitted the compound as they walked by means of a tick-infested space in Brazil had considerably fewer of the bugs connect themselves to leg guards. Another study has proven that in tick-rich areas the place there are horses and donkeys current, the ticks will connect to the horses however not the donkeys.
Looking for to additional examine donkeys’ tick-repelling superpower, the UMA researchers utilized a 20% answer of octenal to a filter paper after which let the ticks crawl throughout it for 10 minutes. Additionally they examined the ticks’ actions utilizing a 20% answer of DEET and a management paper with ethanol. The motion of the ticks was noticed utilizing monitoring software program.
As soon as once more, the analysis confirmed that the octenal was in all instances at the very least as efficient as DEET in repelling the ticks and within the case of male ticks, it was really more practical than DEET. Additionally they noticed that the octenal was capable of repel ticks at an additional distance than the DEET.
The researchers say that extra work is warranted into discovering out precisely how the compound fights off the pests in order that an efficient inexperienced repellent may be developed that does not depend on harsh chemical compounds. The workforce additionally says that along with being utilized to human pores and skin, such a compound may be leveraged as a pure pesticide to regulate deer ticks within the wild.
The findings have been reported within the journal PLOS One.
