Abstract
To improve biocontrol of the cassava green mite, Mononychellus tanajoa, a series of screenhouse experiments were conducted on cassava to determine the effects of single and combined releases of the predatory mite Typhlodromalus aripo and the entomopathogenic fungus Neozygites tanajoae on the suppression of M. tanajoa. We showed that, separately or in combination, T. aripo and N. tanajoae significantly reduced M. tanajoa populations. Moreover, combined release of T. aripo and N. tanajoae on the same cassava plants improved M. tanajoa control. However, our data suggest between T. aripo and N. tanajoae an asymmetric competition that significantly affected N. tanajoae only. This interference is indirect, probably mediated by their common prey or host mite, M. tanajoa since N. tanajoae is not pathogenic to T. aripo. We conclude that adding N. tanajoae to T. aripo populations in Africa would not negatively affect T. aripo and would further promote biocontrol of M. tanajoa.
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Agboton BV, Hanna R, Hountondji FCC, von Tiedemann A (2009) Pathogenicity and host specificity of Brazilian and African isolates of the acaropathogenic fungus Neozygites tanajoae to mite species associated with cassava. J Appl Entomol 133:651–658
Agboton BV, Hanna R, von Tiedemann A (2011) Molecular detection of establishment and geographical distribution of Brazilian isolates of Neozygites tanajoae, a fungus pathogenic to cassava green mite, in Benin (West Africa). Exp Appl Acarol 53:235–244
Agboton BV, Hanna R, Onzo A, Vidal S, von Tiedemann A (2013) Interactions between the predatory mite Typhlodromalus aripo and the entomopathogenic fungus Neozygites tanajoae and consequences for the suppression of their shared prey/host Mononychellus tanajoa. Exp Appl Acarol. doi:10.1007/s10493-012-9630-1
Chant DA, McMurtry JA (2005) A review of the subfamily Amblyseiinae Muma (Acari: Phytoseiidae). VI. The tribe Euseiini n. tribe, subtribes Typhlodromalina n. subtribe, Euseiina n. subtribe, and Ricoseiina n. subtribe. Int J Acarol 31:187–224
Delalibera I Jr, Sosa-Gomes DR, De Moraes GJ, Alenca JA, Farias AW (1992) Infection of Mononychellus tanajoa (Acari: Tetranychidae) by the fungus Neozygites sp. (Entomophthorales) in Northeastern Brazil. Fla Entomol 75:145–147
Delalibera I Jr, Hajek AE, Humber RA (2004) Neozygites tanajoaesp. nov., a pathogen of the cassava green mite. Mycologia 96:1002–1009
Delalibera JI, Demetrio CGB, Manly BFJ, Hajek AE (2006) Effect of relative humidity and origin of isolates of Neozygites tanajoae (Zygomycetes: Entomophthorales) on production of conidia from cassava green mite, Mononychellus tanajoa (Acari: Tetranychidae), cadavers. Biol Control 39:489–496
Hanna R, Onzo A, Lingeman R, Yaninek JS, Sabelis MW (2005) Seasonal cycles and persistence in an acarine predator-prey system on cassava in Africa. Popul Ecol 47:107–117
Hountondji FCC, Yaninek JS, De Moraes GJ, Odour GI (2002a) Host specificity of the cassava green mite pathogen Nezygites floridana. BioControl 47:61–66
Hountondji FCC, Lomer CJ, Hanna R, Cherry AJ, Dara SK (2002b) Field evaluation of Brazilian isolates of Neozygites floridana (Entomophthorales: Neozygitaceae) for the Microbial Control of Cassava Green Mite in Benin, West Africa. Biocontrol Sci Technol 12:361–370
Hountondji FCC, Hanna R, Cherry AJ, Sabelis MW, Agboton B, Korie S (2007) Scaling up tests on virulence of the cassava green mite fungal pathogen Neozygites tanajoae (Entomophthorales: Neozygitaceae) under controlled conditions: first observations at the population level. Exp Appl Acarol 41:153–168
Moraes GJ, Zannou ID, Oliveira AR, Yaninek JS, Hanna R (2006) Phytoseiid mites of the subtribes Typhlodromalina and Euseiina (Acari: Phytoseiidae: Euseiini) from sub-Saharan Africa. Zootaxa 1114:1–52
Nyiira ZM (1972) Report of investigations of cassava mite, Mononychellus tanajoa Bondar. Unpublished Report Kawanda Research Station, Kampala, Ouganda, p 14
Oduor GI, de Moraes GJ, van der Geest LPS, Yaninek JS (1996) Production and germination of primary conidia of Neozygites floridana (Zygomycetes: Entomophtorales) under constant temperatures, humidities and photoperiods. J Invert Pathol 68:213–222
Onzo A, Hanna R, Zannou I, Sabelis MW, Yaninek JS (2003a) Dynamics of refuge use: Diurnal, vertical migration by predatory and herbivorous mites within cassava plants. Oikos 101:59–69
Onzo A, Hanna R, Sabelis MW (2003b) Interactions in an acarine predator guild: impact on Typhlodromalus aripo abundance and biological control of cassava green mite in Africa. Exp Appl Acarol 31:225–241
Onzo A, Hanna R, Sabelis MW (2012) The predatory mite Typhlodromalus aripo prefers green-mite induced plant odours from pubescent cassava varieties. Exp Appl Acarol 58:359–370
SAS Institute (2003) SAS statistical package version 9.1 (TS1M0). SAS Institute Inc, Cary, USA
Yaninek JS, Hanna R (2003) Cassava green mite in Africa a unique example of successful biological control of a mite pest on a continental scale. In: Neuenschwander P, Borgemeister C, Langewald J (eds) Biological control in IPM Systems in Africa. CAB International, Wallingford, UK, pp 61–75
Yaninek JS, Herren HR (1988) Introduction and spread of the cassava green mite, Mononychellus tanajoa (Bondar) (Acari: Tetranychidae), an exotic pest in Africa and the search for appropriate control methods: a review. Bull Entomol Res 78:1–13
Yaninek JS, Onzo A, Ojo B (1993) Continent-wide releases of neotropical phytoseiids against the exotic cassava green mite in Africa. Exp Appl Acarol 17:145–160
Yaninek JS, Saizonou S, Onzo A, Zannou I, Gnanvossou D (1996) Seasonal and habitat variability in the fungal pathogens, Neozygites cf. floridana and Hirsutella thompsonii, associated with cassava mites in Benin. Biocontrol Sci Technol 6:23–33
Yaninek JS, Megevand B, Ojo B, Cudjoe AR, Abole E, Onzo A, Zannou I (1998) Establishment and spread of Typhlodromalus manihoti (Acari: Phytoseiidae), an introduced phytoseiid predator of Mononychellus tanajoa (Acari: Tetranychidae) in Africa. Environ Entomol 27:1496–1505
Zundel C, Nagel P, Hanna R, Korner F, Scheidegger U (2009) Environment and host-plant genotype effects on the seasonal dynamics of a predatory mite on cassava in sub-humid tropical Africa. Agric Forest Entomol 11:321–331
Acknowledgments
We are grateful to B. Bovis and H. Dossounon, for their technical assistance. We are also very grateful to Dr. D. Gnanvossou, Dr. A. Bokonon-Ganta and two anonymus reviewers for their valuable comments on an earlier version of the manuscript. This research was supported with funds provided to the International Institute of Tropical Agriculture (IITA) by the International Fund for Agricultural Development (IFAD).
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Onzo, A., Bello, I.A. & Hanna, R. Effects of the entomopathogenic fungus Neozygites tanajoae and the predatory mite Typhlodromalus aripo on cassava green mite densities: screenhouse experiments. BioControl 58, 397–405 (2013). https://doi.org/10.1007/s10526-013-9508-0
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DOI: https://doi.org/10.1007/s10526-013-9508-0