Mononychellus tanajoa (cassava green mite).

2021 ◽  
Author(s):  
Beatrice Pollangyo ◽  
George Odour
Keyword(s):  
Natural Enemies ◽  
Manihot Esculenta ◽  
Tuber Yield ◽  
Yield Loss ◽  
Cassava Green Mite ◽  
Plant Materials ◽  
Population Growth Rates ◽  
Green Mite ◽  
Indigenous Natural Enemies ◽  
Significant Factors

Abstract The cassava green mite, M. tanajoa, is of Neotropical origin but was accidentally introduced to Africa in 1971 (Nyiira, 1972). By 1985, the pest had spread throughout the cassava belt of Africa (Yaninek and Heren, 1988). M. tanajoa affects the important annual crop cassava (Manihot esculenta) and can cause a reduction of about 50% in leaf weight, and up to 80% tuber yield loss (Shukla, 1976; Gutierrez et al., 1988; Pallangyo et al., 2004). M. tanajoa is mainly dispersed by human activity, whereby infested plant materials and contaminated media are transported over long distances. Natural dispersion by wind and water may also spread the cassava green mite. In areas where both the pest and host plant are exotic, there is no evidence that indigenous natural enemies are significant factors in limiting the mite population growth rates. M. tanajoa can feed and reproduce on other plant species (Moraes et al., 1995) and is reported as a quarantine pest (Delalibera et al., 1992; EPPO, 2009).

scholarly journals PAIRWISE ASSOCIATION AS A CRITERION FOR THE SELECTION OF COLLECTION SITES OF NATURAL ENEMIES OF THE CASSAVA GREEN MITE, Mononychellus tanajoa (BONDAR)

1996 ◽  
Vol 53 (2-3) ◽  
pp. 324-331 ◽  
Author(s):  
G.S. RODRIGUES ◽  
L.C. PARAÍBA ◽  
G. J. de MORAES
Keyword(s):  
Biological Control ◽  
Natural Enemies ◽  
Interspecific Interactions ◽  
Mononychellus Tanajoa ◽  
Northeastern Brazil ◽  
Cassava Green Mite ◽  
Ecological Requirements ◽  
Green Mite ◽  
Collection Sites ◽  
Selection Of

Climatic similarity has been the primary parameter considered in the selection of sites for the collection and release of natural enemies in classical biological control programs. However, acknowledging the relevance of the composition of biological communities can be essential for improving the record of successful biocontrol projects, in relation to the proper selection of collection sites. We present in this paper an analysis of the plant and mite assemblages in cassava fields of northeastern Brazil. Such analysis is suggested as an additional criterion for the selection of collection sites of mite predators of the cassava green mite, Mononychellus tanajoa (Bondar), in an international biological control program. Contingency TABLES were built using Dice's index as an indicator of significant associations between pairs of species. This analysis enabled the identification of plant and mite species typically found together, indicating interspecific interactions or similar ecological requirements. Finally, a cluster analysis was used to group sites containing similar assemblages. These sites exhibit comparable chances of harboring a given species. Applied at the species-group level, the analysis may assist in better defining sites for the collection of natural enemies to be released in a given region, improving the chances of establishment.

BIOEFFICACY OF PLANT EXTRACTS AGAINST MUSTARD APHID AND THEIR NATURAL ENEMIES

2019 ◽  
Vol 25 (1) ◽  
Author(s):  
NARENDRA SINGH ◽  
N. S. BHADAURIA ◽  
PRADYUMN SINGH
Keyword(s):  
Plant Extracts ◽  
Natural Enemies ◽  
Untreated Control ◽  
Plant Material ◽  
Aphid Population ◽  
College Of Agriculture ◽  
Mustard Aphid ◽  
Plant Materials

The Bio-efficacy of eleven plant extracts namely viz.Neem Kernel; Rhizome of Ginger; Leaves of Datura, Gajarghas, Harsingar, Oak and Latjeera; Bulb of Garlic and Onion; Flowers of Chrysenthemum and Fruits of Chilli in the concentration of 5 percent and imidacloprid @ 40 g ai/ha was tested against mustard aphid, Lipaphiserysimi and their effect on D. rapae and Coccinellid beetle were tested in the Department of Entomology, College of Agriculture, Gwalior (M.P.). All the tested plant materials and imidacloprid @ 40 g ai/ha were effective significanty in reducing the aphid population over control.The aphid population in treated plots ranged from 7.2 to 40.0 as against 85.4 aphid/twig in untreated control. Among the plant material, three sprays of Neem Kernel were found most effective followed by three sprays of chilli fruits.All the plant extracts were found significantly safer to D. rapae and coccinellid bettle in comparision to insecticide (imidacloprid).

scholarly journals Identification of additional /novel QTL associated with resistance to cassava green mite in a biparental mapping population

PLoS ONE ◽  
2020 ◽  
Vol 15 (4) ◽  
pp. e0231008 ◽  
Author(s):  
Lydia Ezenwaka ◽  
Ismail Rabbi ◽  
Joseph Onyeka ◽  
Peter Kulakow ◽  
Chiedozie Egesi
Keyword(s):  
Mapping Population ◽  
Cassava Green Mite ◽  
Green Mite

Biological control of Drosophila suzukii.

2020 ◽  
Vol 15 (054) ◽  
Author(s):  
Xing-eng Wang
Keyword(s):  
Biological Control ◽  
Natural Enemies ◽  
Control Strategies ◽  
Pathogenic Fungi ◽  
Classical Biological Control ◽  
Research Progress ◽  
Drosophila Suzukii ◽  
Control Programs ◽  
Crop Fields ◽  
Indigenous Natural Enemies

Abstract Drosophila suzukii (Matsumura) is native to East Asia but has widely established in the Americas and Europe, where it is a devastating pest of soft-skinned fruits. It has a wide host range and these non-crop habitats harbor the fly which then repeatedly reinvades crop fields. Biological control in non-crop habitats could be the cornerstone for sustainable management at the landscape level. Toward this goal, researchers have developed or investigated biological control tactics. We review over 100 studies, conducted in the Americas, Asia and Europe on natural enemies of D. suzukii. Two previous reviews provided an overview of potential natural enemies and detailed accounts on foreign explorations. Here, we provide an up-to-date list of known or evaluated parasitoids, predators and entomopathogens (pathogenic fungi, bacteria, nematodes, and viruses) and summarize research progress to date. We emphasize a systematic approach toward the development of biological control strategies that can stand alone or be combined with more conventional control tools. Finally, we propose a framework for the integrated use of biological control tools, from classical biological control with host-specific Asian parasitoids, to augmentative and conservation biological control with indigenous natural enemies, to the use of entomopathogens. This review provides a roadmap to foster the use of biological control tools in more sustainable D. suzukii control programs.

Control of the Tomato Leafminer,Tuta absoluta(Lepidoptera: Gelechiidae), in Open-Field Tomatoes by Indigenous Natural Enemies Occurring in Israel

2015 ◽  
Vol 109 (1) ◽  
pp. 120-131 ◽  
Author(s):  
Liora Shaltiel-Harpaz ◽  
Dan Gerling ◽  
Shaul Graph ◽  
Hendrika Kedoshim ◽  
Lotem Azolay ◽  
...  
Keyword(s):  
Open Field ◽  
Natural Enemies ◽  
Tuta Absoluta ◽  
Tomato Leafminer ◽  
Indigenous Natural Enemies
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