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Spatial distribution of cocoon nests and egg clusters of the silkmoth Anaphe panda (Lepidoptera: Thaumetopoeidae) and its host plant Bridelia micrantha (Euphorbiaceae) in the Kakamega Forest of western Kenya

Published online by Cambridge University Press:  01 December 2007

N. Mbahin ,
S.K. Raina ,
E.N. Kioko  and
J.M. Mueke
N. Mbahin*
Affiliation:
Commercial Insects Programme, ICIPE—African Insect Science for Food and Health, PO Box 30772-00100, Nairobi, Kenya: Department of Biological Sciences, Kenyatta University, PO Box 43844, Nairobi, Kenya
S.K. Raina
Affiliation:
Commercial Insects Programme, ICIPE—African Insect Science for Food and Health, PO Box 30772-00100, Nairobi, Kenya:
E.N. Kioko
Affiliation:
Commercial Insects Programme, ICIPE—African Insect Science for Food and Health, PO Box 30772-00100, Nairobi, Kenya:
J.M. Mueke
Affiliation:
Department of Biological Sciences, Kenyatta University, PO Box 43844, Nairobi, Kenya
*
*E-mail: [email protected]
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Abstract

A study on the spatial distribution of the silkmoth Anaphe panda (Boisduval) cocoon nests, egg clusters and the host plant Bridelia micrantha (Hochst) Baill. was conducted in two different habitats of the Kakamega Forest of western Kenya: Ikuywa (indigenous forest) and Isecheno (mixed indigenous forest). The mean densities of cocoon nests, egg clusters and B. micrantha were significantly different in the two blocks and were not semi-randomly distributed in the two habitats. The host plants were underdispersed in the indigenous forest, whereas they were overdispersed in the mixed indigenous forest. The cocoon nests were overdispersed and the silkmoth egg clusters were underdispersed in the two blocks of forest. This study reveals that A. panda tends to distribute its egg clusters uniformly over the lower and middle crown of B. micrantha with a preference to eastern localization and confirms the insufficient presence of populations of this silkmoth in a mixed indigenous forest compared with an indigenous forest. Consequently, indigenous forests should be managed in a sustainable way and more indigenous tree species should be used in reforestation campaigns.

Keywords

Anaphe pandaBridelia micranthaforest managementsericultureKenyasilkmoth
Type
Research Paper
Information
International Journal of Tropical Insect Science , Volume 27 , Issue 3-4 , December 2007 , pp. 138 - 144
Copyright
Copyright © ICIPE 2008

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References

Ashiru, M. O. (1988) Determination of the number of instars of the silkworm Anaphe veneta Butler (Lepidoptera: Notonidae). Insect Science and Its Application 9, 405–410.Google Scholar
Garmin Ltd (2002) Garmin Software. AV Garmin Ltd.Google Scholar
Geertsema, H. (1975) Studies on the biology, ecology and control of the pine tree emperor moth, Nudaurelia cytherea cytherea (Fabr.) (Lepidoptera: Saturniidae). Annale Universiteit Van Stellenbosch 50 (1), 170.Google Scholar
Gowdey, C. C. (1953) On the utilisation of an indigenous silkworm (Anaphe infracta Walsingham) in Uganda. Bulletin of Entomological Research 3, 269–274.Google Scholar
Jolly, M. S., Sen, S. K., Sonwalker, T. N. and Prasad, G. K. (1979) Non-mulberry silks. FAO Agricultural Services Bulletin 29, 164.Google Scholar
KIFCON (1994) Kenya Indigenous Forest Conservation Programme Phase 1 Report. Centre for Biodiversity, Nairobi.Google Scholar
Kioko, E. N., Raina, S. K. and Mueke, J. M. (1999) Conservation of the African wild silkmoths for economic incentives to rural communities of the Kakamega Forest in Kenya. International Journal of Wild Silkmoths and Silk 4, 1–5.Google Scholar
Kioko, E. N., Raina, S. K. and Mueke, J. M. (2000) Survey on diversity of wild silk moths species in East Africa. East African Journal of Science 2 (1), 1–6.Google Scholar
Munthali, S. M. and Mughogho, E. C. (1992) Economic incentives for conservation bee-keeping and Saturnidae caterpillar utilization by rural communities. Biodiversity and Conservation 1, 143–154.CrossRefGoogle Scholar
Oberprieler, R. (1994) The Emperor Moths of Namibia. Ecoguild, Hartbeespoort.Google Scholar
Oliveira, J. F. S., De Carvalho, R. F. X., De Sousa, B. and Simao, M. M. (1976) The nutritional value of four insects consumed in Angola. Ecology of Food and Nutrition 5, 91–97.Google Scholar
Pottinger, R. P. and LeRoux, E. J. (1971) The biology and dynamics of Lithocolletis blancardella (Lepidoptera: Gracillariidae) on apple in Quebec. Memoirs of the Entomological Society of Canada 77, 437.Google Scholar
Raina, S. K. (2004) On developing incentives for community participation in forest conservation through the use of commercial insects in Kenya. First training course, 19 November–10 December 2004. ICIPE, 213 pp.Google Scholar
Raje, U. S. (1999) Prospects and problems of silk industry in African countries. In Sericulture and Apiculture: Prospects for the New Millennium. Proceedings of the Second International Workshop on Conservation and Utilization of Commercial Insects (28 November–1 December 1999) ISBN 92 9064 133 9. ICIPE Science Press, Nairobi.Google Scholar
SAS Institute (2003) SAS/STAT Users' Guide, version 8, 6th edn., vol. 2. SAS Institute, Cary, North Carolina.Google Scholar
Southwood, T. R. E. (1968) Ecological Methods with Particular Reference to the Study of Insect Populations. Methuen, London. 391 pp.Google Scholar
Zar, J. H. (2005) Biostatistical Analysis. Third Indian (reprint). Pearson Education (Singapore) Pte. Ltd, Delhi. 663 pp.Google Scholar