WINETECH Technical Yearbook 2021

TABLE 1. Mortality of last instar larvae of BFW and adults treated with Beauveria bassiana (EPF 1), Metarhizium anisopliae (EPF 2) and Steinernema yirgalemense (EPN) in laboratory trials.

Phlyctinus callosus (Schönherr) (Coleoptera: Curculionidae) using entomopathogenic nematodes. Austral Entomology 58: 687- 695. Doi: 10.1111/aen.12386. Ferreira, T. & Malan, A.P., 2014. Potential of entomopathogenic nematodes for the control of the banded fruit weevil, Phlyctinus callosus (Schönherr) (Coleoptera: Curculionidae). Journal of Helminthology 88: 293-301 (Doi: 10.1017/S0022149X13000175). Pringle, K.L., Barnes, B.N & Blomefield, T.L., 2015. Insect of deciduous fruit and nut trees and olive - apple. In: Prinsloo, G.H & Uys, V.M. (Ed.), Insects of cultivated plants and natural pastures in Southern Africa. Entomological Society of Southern Africa, Pretoria, South Africa.

Southern Africa, Pretoria, South Africa. Barnes, B.N. & Giliomee, J.H., 1992. Fruit- feeding behaviour of banded fruit weevil, Phlyctinus callosus (Schönherr) (Col., Curculionidae), in apple orchards. Journal of Applied Entomology 113: 407-415. Barnes, B.N. & Pringle, K.L. , 1989. Oviposition by banded fruit weevil, Phlyctinus cal l osus (Schoenher r ) (Co l eopt era : Curculionidae), in deciduous fruit orchards in South Africa. Bulletin of Entomological Research 79: 31-40. Barnes , B.N. , 1989a . Di f ferent l i fe and seasonal cycles of banded frui t weevil, Phlyctinus callosus (Coleoptera: Curculionidae), in apple orchards in the South-Western Cape. Phytophylactica 21: 147-157. Barnes, B.N. , 1989b. Embryonic and immature stages of Phlyctinus callosus Boh. (Coleoptera, Curculionidae): Aspects of biology and behaviour with respect to control in deciduous fruit orchards. Journal of the Entomological Society of Southern Africa 52: 165-178. Dlamini, B., Malan, A.P. & Addison, P., 2019. Control of the banded fruit weevil,

Treatment interval (Weeks)

Larval mortality (%)

Adult mortality (%)

Treatments*

EPF 1 EPF 2

- - -

63-89 54-58

58-79 52-54

EPN

67

69

EPF 1 + EPN EPF 2 + EPN EPF 1 + EPN EPF 2 + EPN EPF 1 + EPN EPF 2 + EPN

0 0 1 1 2 2

74-98 78-81

88-100

88-90

100

91-100

84-89

94-97

100

97-100

93-96 99-100 *Products used have not been disclosed to protect the identity of manufacturers.

culture and formulation of these nematodes to be used in combination with EPF in more laboratory and on larger scale field trials to determine efficacy and persistence on wild BFW under field conditions. Our study also showed that the eight other species also cause damage, but to a lesser extent, in vineyards. As weevil species are sporadic and can create local outbreaks, future studies should also assess the

potential of the pathogens to control these other species. REFERENCES Allsopp, E., Barnes, B.N., Blomefield, T. & Pringle, K.L., 2015. Insect of deciduous fruit and nut trees and olive – grapevine. In: Prinsloo, G.H & Uys, V.M. (Ed.), Insects of cultivated plants and natural pastures in Southern Africa. Entomological Society of

For more information, contact Pia Addison at pia@sun.ac.za.

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