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Positive and negative effects of two organic acids used in the control of the honey bee parasitic mite varroa destructor (Anderson) ( Acari: Varroidae).

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POSITIVE AND NEGATIVE

EFFECTS OF TWO ORGANIC

ACIDS

USED lN THE CONTROL

OF THE

HONEY

BEE

PARASITIC

MITE

VARROA

DESTRUCTOR

(ANDERSON)

(ACARI: VARROIDAE)

J.Mignon, B.KimNguyen, F.Bachelart, E.Haubruge

Department of functional and evolutionary entomotoqy, Gembloux Agricultural University, Gembloux,Belgium

The

honey

bees

Apis mellifera

L.

(Hymenoptera:

Apidae) are currently

confronted

with

a

high level

of mortality.

The

parasite

Va

r

roa destructor

(Anderson) (Acari: Varroidae) is suspected to

be one of the most important

factors involved in this

worldwide

problem.

Indeed, this mite is the most

serious

pest of

managed honey

bee colonies.

l

n

Belgium

,

only three

legal

miticides (coumaphos

,

fluvalinate and

amitraze) were available to control this

parasite.

Since resistance

to

those active substances

appeared,

Belgian

beekeepers

have

not

enough solutions to control

Il

de

s

tructor

. Organ

ic acids

are

frequently

used

in

other European countries as alternative control of the

parasitic honey

bee

mite but results

of efficacy and toxicity tests reported

in

scientific and non scientific

literature are often.

contradictory

.

We

reviewed

the

positive and negative effects

ofboth

oxalic and

formic acids.

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