caa a22 4500 388105747 CHVBK 20180307125337.0 cr unu---uuuuu 161130e199909 xx s 000 0 eng 10.1017/S1742758400019391 doi S1742758400019391 pii (NATIONALLICENCE)cambridge-10.1017/S1742758400019391 Mbata Keith J. Department of Biological Sciences, University of Zambia, P. O. Box 32379, Lusaka, Zambia, E-mail: kmbata@natsci.unza.zm A Preliminary Life Table of the Armoured Ground Cricket, Acanthoplus speiseri Brancsik (Orthoptera: Tettigoniidae, Hetrodinae), a Pest of Grain Crops in Zambia [Elektronische Daten] [Keith J. Mbata] The development of a single cohort of the armoured ground cricket, Acanthoplus speiseri Brancsik was followed in the environs of the University of Zambia campus, Lusaka and a preliminary life table of the grain pest constructed. The pest's total generation mortality was influenced by: failed egg eclosion, failed ecdysis, cannibalism/predation and parasitism. The egg stage had the highest percent real mortality (98.57%) and sub-mortality k-value, indicating that this was the main contributor to the total generation mortality. The rest of the developmental stages suffered lower mortalities, although that of the 6th instar was comparatively higher. A mermithid nematode, Mermis sp., and another unidentified nematode species caused 2.61% sub-mortality in the 6th nymphal instar. The constructed preliminary life table of A. speiseri is analysed and the possible causes of the observed high mortalities in the egg and 6th instar stages are discussed. Copyright © ICIPE 1999 Acanthoplus speiseri Brancsik nationallicence armoured ground cricket nationallicence grain crop pest nationallicence Hetrodinae nationallicence Orthoptera nationallicence preliminary life table nationallicence Tettigoniidae nationallicence Acanthoplus speiseri Blancsik nationallicence criquet terricole à bouclier nationallicence ravageur des grains de céréales nationallicence Hetrodinae. Orthoptera nationallicence table préliminaire de vie nationallicence Tettigoniidae nationallicence International Journal of Tropical Insect Science Cambridge University Press 19/2-3(1999-09), 141-148 1742-7584 19:2-3<141 1999 19 JTI https://doi.org/10.1017/S1742758400019391 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1017/S1742758400019391 text/html Onlinezugriff via DOI NATIONALLICENCE 100 1- Mbata Keith J. Department of Biological Sciences, University of Zambia, P. O. Box 32379, Lusaka, Zambia, E-mail: kmbata@natsci.unza.zm NATIONALLICENCE 773 0- International Journal of Tropical Insect Science Cambridge University Press 19/2-3(1999-09), 141-148 1742-7584 19:2-3<141 1999 19 JTI CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge