Sie befinden Sich nicht im Netzwerk der Universität Paderborn. Der Zugriff auf elektronische Ressourcen ist gegebenenfalls nur via VPN oder Shibboleth (DFN-AAI) möglich. mehr Informationen...
new approach to the control of predatory wasps (Vespa spp.) of the honeybee (Apis mellifera L.)
Ist Teil von
Journal of apicultural research, 1989, Vol.28 (3), p.126-130
Ort / Verlag
Cardiff: Taylor & Francis
Erscheinungsjahr
1989
Link zum Volltext
Quelle
Taylor & Francis Journals Auto-Holdings Collection
Beschreibungen/Notizen
Among five overripe fruits tested as bait for Vespa spp. in an apiary, pear attracted the maximum number of wasps when compared with other fruits. Feeding of poisoned bait ad lib. to the wasps in cages revealed that LT
50
values were 180·9, 62·1 and 28·8 min at 100, 200 and 300 mg fenitrothion kg
−1
jaggery, respectively. In the newly developed 'capsule cup' technique, one load of poison bait on the thorax of a wasp was shared by more wasps, but the total number of wasps killed did not decrease. With the increase in concentration of bait there was corresponding decrease in LT
50
) values. A load of 110 mg poison bait (with 1000 ppm fenitrothion) could easily kill 30-35 wasps. In the two field experiments, by sending 25 and 16 loads of poisoned bait, respectively, nests of V. cincta were completely destroyed.