Hostname: page-component-cd9895bd7-lnqnp Total loading time: 0 Render date: 2024-12-22T17:37:45.688Z Has data issue: false hasContentIssue false
  • English
  • Français

Mechanisms of Resistance to the Cassava Green Mite Mononychellus tanajoa (Bondar) on Pubescent and Non-Pubescent Cassava Varieties

Published online by Cambridge University Press:  19 September 2011

Masamba Walangululu ,
Ki Munseki Lema  and
Nlandu Nsumbu
Masamba Walangululu
Affiliation:
Institut Facultaire des Sciences Agronomiques (IFA), B.P. 1232 Kisangani (Province Orientale), République Démocratique du Congo
Ki Munseki Lema
Affiliation:
International Institute of Tropical Agriculture (IITA), PMB 5320 Oyo Road, Ibadan, Nigeria
Nlandu Nsumbu
Affiliation:
Institut Facultaire des Sciences Agronomiques (IFA), B.P. 1232 Kisangani (Province Orientale), République Démocratique du Congo
Get access

Abstract

Cassava varieties resistant to the cassava green mite, Mononychellus tanajoa (Bondar) ( Acari:Tetranychidae) have been reported in many parts of Africa where the pest has been introduced. However, the resistance mechanisms have not been identified. Laboratory studies on biology and feeding behaviour of cassava green mite were carried out at the International Institute of Tropical Agriculture (IITA), in order to determine whether this resistance is mainly due to pubescence.

Cassava pubescence was found to have no antibiotic effect; both pubescent and non-pubescent varieties were preferred by the mite for oviposition, food and shelter. In addition, pubescence does not afford a mechanical barrier to cassava against green mite infestation.

Résumé

Les variétés résistantes de manioc aux attaques d'acarien vert ont été observées dans beaucoup de pays d'Afrique où sévit cette peste mais les mécanismes de résistance n'ont pas encore été identifiés. Des études ont été menées au laboratoire à l'Institut International d'Agriculture Tropicale (IITA) sur la biologie et le comportement pendant la prise de nourriture de l'acarien vert en vue de confirmer si la pubescence est la cause principale de cette résistance, comme cela a souvent été affirmé à l'IITA.

Les résultats ont montré que les variétés pubescentes ne manifestent pas d'antibiose. Aussi bien les variétés pubescentes que non-pubescentes sont préférées pour la ponte, la nourriture et l'abri, indiquant qu'il n'y a pas de préférence pour l'une ou l'autre variété. En plus les poils n'empêchent pas l'acarien de se nourrir Sur les feuilles.

Keywords

resistancegreen miteMononychellus tanajoacassavapubescenceantibiosisantixenosisbiologyfeeding behaviourrésistanceacarien vertMononyehellus tanajoamaniocpubescenceantibioseantixénosebiologiecomportement pendant l'alimentation
Type
Research Articles
Information
International Journal of Tropical Insect Science , Volume 18 , Issue 4 , December 1998 , pp. 285 - 291
Copyright
Copyright © ICIPE 1998

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Byrne, D. H., Guerrero, J. M., Bellotti, A. C. and Gracen, V. E. (1982) Behaviour and development of Mononychellus tanajoa (Bondar) (Acari: Tetranychidae) on resistant and susceptible cultivars of cassava, J. Econ. Entomol. 75, 924–927.Google Scholar
Hahn, S. K. (1981) Pubescence in cassava and resistance to both cassava mealybug and cassava green mite, pp. 72–75. In Proceedings of the International Workshop on Control of Cassava Mealybug and Green Spider Mite (Edited by Okoli, O. O., Enyinnia, T., Ibekwe, M. C., Odurukwe, S. O., Okeke, J. E. and Okereke, H. E.). 12–16 October 1981, Umudike, Nigeria.Google Scholar
International Institute of Tropical Agriculture (1981) Annual Report for 1980. Ibadan, Nigeria.Google Scholar
International Institute of Tropical Agriculture (1983) Annual Report for 1982. Ibadan, Nigeria.Google Scholar
Kasu, T. (1984) Effects of pubescence on the behaviour, reproduction and post-embryonic development of cassava mealybug Phenacoccus manihoti Mat-Ferr. Homoptera-Pseudococcidae. MSc Thesis. 79 pp.Google Scholar
Lema, K. M. (1986) Further studies on green mite resistance in cassava. UTA Research briefs 7 (1), 7.Google Scholar
Leuschner, K. (1981) Screening for resistance against spider mite, pp. 81–84. In Tropical Root Crops, Research and Strategies for 1980s (Edited by Terry, E. R., Oduro, K. A. and Caveness, F.). Proceedings 1st Triennal Root Crops Symposium,8–12 September 1980. Ibadan, Nigeria.Google Scholar
Muaka, T. (1981) Aspects of thebiology of Mononychellus tanajoa (Bondar) infesting Manihot esculenta Crantz in southern Nigeria. M Phil Thesis. 108 pp.Google Scholar
Nyiira, Z. M. (1973) Bioecological studies on the cassava mite Mononychellus tanajoa (Bondar) (Acarina: Tetranychidae), pp. 415–418. In Proceedings of the 3rd Symposium of the International Society for Tropical Root Crops (Edited by Leaky, C. L. A.). Ibadan, Nigeria, 2–9 December 1973.Google Scholar
Nyiira, Z. M. (1976) Advances in research on the economic significance of the green cassava mite (Mononychellus tanajoa) in Uganda, pp. 27–29. In The International Exchange and Testing of Cassava Germplasm in Africa (Edited by Terry, E. and Maclntyre, R.). Proceedings of an Interdisciplinary workshop, IITA Ibadan, Nigeria, 17–21 November, 1975.Google Scholar
Painter, R. H. (1951) Insect Resistance in Crop Plants. The University of Kansas. Lawrence and London. 520 pp.Google Scholar
Rodriguez, J. G. (1953) Detached leaf culture in mite nutrition studies, J. Econ. Entomol. 46, 713.CrossRefGoogle Scholar
Shukla, P. T. (1976) Preliminary report on the green mite (Mononychellus tanajoa (Bondar)) resistance in Tanzanian local varieties. East African Agrie. For. J. 42, 56–59.Google Scholar
Singh, T. P. (1981) Breeding cassava resistant to pests and diseases in Zaire, pp. 37–39. In Tropical Root Crops, Research and Strategies for 1980's (Edited by Terry, E. R., Oduro, K. A. and Caveness, F.). Proceedings 1st Triennal Root Crops Symposium, 8–12 September 1980. Ibadan, Nigeria.Google Scholar
Soans, A. B., Pimentel, D. and Soans, J. S. (1973) Resistance in cucumber to twospotted mite. J. Econ. Entomol. 66, 380–382.Google Scholar