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Tetranychid Mites on Cassava in Sierra Leone

Published online by Cambridge University Press:  19 September 2011

B. D. James
B. D. James
Affiliation:
Department of Zoology, Fourah Bay College, University of Sierra Leone, Freetown, Sierra Leone
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Abstract

The green cassava mite, Mononychellus tanajoa (Bondar) and the red spider mite, Tetranychus urticae Koch infest all varieties of cassava in Sierra Leone. Both tetranychid species are widely distributed in the country and are causing severe damage to the crop mainly in the major cassava producing areas in the north-western regions. M. tanajoa caused chlorosis and 91° loss in photosynthetic area of the attacked leaves and defoliation of the plant either by acting alone or in concert with T. urticae. Late planted crop was particularly vulnerable to the infestation. M. tanajoa and T. urticae appeared to avoid severe interspecific competition on the plant by habitat stratification.

Résumé

La teigne du manioc Mononychellus tanajoa (Bondar) et al mite d'araignée rouge Tetranychus urticae Koch infestant toutes les varieties de manioc on Sierra Leone. Les deux especès de tetranychid sont largement distritrées dans le pays et endommagent gravement in récotte surtout dans le nord-coust-oò se trouve les régions productrices le plus importantes du manioc. M. tanajoa a provoqué la chlorose 90° de perte de la surface photosynthétique des feuilles attaquées, et al defoliation de la plante soit par une action unilatérale soit de concert avec T. urticae. Des semailles tardives étaient particulièrement vulnérables aux invasion. M. tanajoa et T. urticae semblent éviter une compétition interspécifique grave sur la plante en stratifiant l'habitant.

Keywords

CassavaMononychellus tanajoaTetranychus urticaehabitat stratificationbiological control
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 9 , Issue 2 , April 1988 , pp. 243 - 247
Copyright
Copyright © ICIPE 1988

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References

REFERENCES

Belloti, A. and van Schoonhoven, A. (1978) Mites and insect pests of insect pests of cassava. A. Rev. Ent. 23, 39–67.CrossRefGoogle Scholar
Anonymous (1970/1971) Agricultural Statistical Survey of Sierra Leone.Google Scholar
FAO (1980) Agro-ecological atlas of Sierra Leone: A survey and appraisal of climate and crop resources. AG: DP/SIL/73/002. Technical Report number 5.Google Scholar
Flechtman, C. H. W. (1978) The cassave mite complex: Taxonomy and identification. In Proceedings of the Cassava Protection Workshop (Edited by Brekelbaum, T., Bellotti, A. and Lozane, J. C.), CIAT, Colombia 7–12 November 1977, pp. 143–153.Google Scholar
Girling, D. J., Bennett, F. D. and Yaseen, M. (1978) Biological control of the green mite, Mononychellus tanajoa (Bondar) (Acarina: Tetranychidae) in Africa. In Proceedings of the Cassava Protection Workshop (Edited by Brekelbaum, T., Bellotti, A. and Lozane, J. C.), CIAT, Colombia, 7–12 November 1977, pp. 165–170.Google Scholar
Hahn, S. K. and Williams, R. J. (1973) Investigations on cassava in the Republic of Zaire. Report on commissaire d'etat a la agriculture, Republic of Zaire, IITA, Ibadan, Nigeria.Google Scholar
IITA (1984a) Africa-wide project for biological control of cassava pests. Project report.Google Scholar
IITA (1984b) Cassava green mite project, Africa-wide biological control programme. Annual report.Google Scholar
Lal, S. S. and Pillai, K. S. (1981) Cassava pests and their control in Southern India. Trop. Pest Manage. 27, 480–491.CrossRefGoogle Scholar
Leuschner, K. (1980) Pest control for cassava and sweet potato. In Root Crops in Eastern Africa, Proceedings of a Workshop held in Kigali, Rwanda, 23–27 November 1980, pp. 60–64.Google Scholar
Lyon, W. F. (1973) A plant-feeding mite Mononychellus tanajoa (Bondar) (Acarina: Tetranychidae) new to the African continent threatens cassava (Manihot esculenta Crantz) in Uganda, East Africa. PANS 19, 36–37.Google Scholar
Lyon, W. F. (1974) A green cassava mite recently found in Africa. Plant Prot. Bull. 22, 11–13.Google Scholar
Meyer, M. K. P. S. (1974) A revision of the Tetranychidae in Africa (Acari) with a key to the genera of the world. Dept. of Agriculture Technical Service, South Africa. Ent. Mon. 36.Google Scholar
Nyiira, A. M. (1972) Report of investigations on Cassava Mite, Mononychellus tanajoa (Bondar). Dept. of Agriculture, Kawanda Research Station, Uganda.Google Scholar
Nyiira, A. M. (1975) Advances in research on the economic significance of the green cassava mite Mononychellus tanajoa (Bondar) in Uganda, Int. Exch. Test. Cassava Germplasm in Africa. Proceedings of an Interdisciplinary Workshop (Edited by Terry, E. and MacIntyre, R.). IITA, Ibadan, Nigeria, 17–21 November 1975, pp. 27–29.Google Scholar
Nyiira, Z. M. (1978) Mononychellus tanajoa (Bondar): Biology, ecology and economic importance. In Proceedings of the Cassava Protection Workshop (Edited by Brekelbaum, T., Bellotti, A. and Lozane, J. C.). CIAT, Colombia 7–12 November 1977, pp. 155–159.Google Scholar
Rodriguez, J. G. (1978) The biology and ecology of the tetranychid mite complex in cassava in perspective. In Proceedings of the Cassava Protection Workshop (Edited by Brekelbaum, T., Bellotti, A. and Lozane, J. C.). CIAT, Colombia 7–12 November 1977, pp. 171–175.Google Scholar
Yaninek, J. S. and Herren, H. R. (1984) Biological Control of cassava pests with special reference to cassava green mites. Paper Presented at the Eastern and Southern Africa Regional Root Crops Workshop In Kampala, Uganda 10–14 December 1984.Google Scholar