Efficacy of Acaropsis sollers (Actinedida, Cheyletidae) in the biological control of two Cowpea Beetle species

Document Type : Original Article

Authors

1 Dept. of Econ. Entomol. & Agric. Zool., Fac. of Agric. Menoufia Univ., Egypt

2 Dept. of Econ. Entomol. & Agric. Zool., Fac. of Agric. Menoufia Univ., Egypt.

3 Agric. Res. Station, Sakha, Kafr El-Sheikh, Egypt.

10.21608/jpces.2005.459500

Abstract

Efficacy of Acaropsis sollers (Rohd.) as a biological control agent on eggs of the southern cowpea beetle, Callosobruchus maculatus (F.) and the cowpea beetle, Callosobruchus chinensis (L.) was studied under laboratory conditions. 1. Predation capacity of A. sollers on C maculatus eggs: Nymphal stage: The feeding capacity of the female and male predatory mite nymphs during their duration on eggs of the southern cowpea beetles were averaged 24.9 and 15.0 eggs during 9.3 and 6.7 days, respectively. Life cycle: During their life cycles the mite females and males preyed upon beetle eggs with an average of 24.9 and 15.0 eggs during 15 and 12.3 days, successively. Adult longevity: The predation capacity during longevity of adult females on C. maculatus eggs averaged 64.0 eggs / female / 15.3 days. The predation capacity on prey eggs during longevity of adult males averaged 17.8 eggs / male / 6.3 days. Life span: The mite females during the whole duration periods preyed upon the eggs of C maculatus with an average of 88.9 eggs / female / 30.3 days, while the mite males attacked prey eggs with an average of 32.3 eggs /male / 18.7 days. 2, Predation capacity of A. sollers on C, chinensis eggs: Nymphal stage: The feeding capacity of this mite species female and male nymphs during their duration on the pulse cowpea beetles eggs averaged 21.2 and 17.7 eggs during 9 and 6.3 days, respectively. Life cycle: The mite females and males during their life cycles preyed upon C. chinensis eggs with averages of 21.2 and 17.7 eggs during 13.7 and I I days, consecutively. Adult longevity: The predation capacity during longevity of adult females averaged 56.0 eggs / female / 14.3 days. The predation capacity during longevity of adult males averaged 15.8 eggs / male / 6 days. Life span: The mite female during the whole duration periods preyed upon the pulse cowpea beetle eggs with an average of 77.2 eggs / female / 28 days, while the mite males attacked prey eggs with an average of 33.5 eggs / male / 17 days. Keywords: Callosobruchus macuiatus, C chinensis and Acarapsis sollers.
Journal of Pest Control and Environmental Sciences
Volume 13, Issue 1
June 2005
Pages 51-60

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