Population Dynamics of the Mango Mealybug Rastrococcus invadens Williams (Homoptera: Pseudococcidea) in Western Burkina Faso
Journal Title: Journal of Experimental Agriculture International - Year 2016, Vol 11, Issue 6
Abstract
Aims: The study aimed at determining the periods of high pest population of the mango tree mealybug Rastrococcus invadens Williams with respect to biotic and abiotic factors. Study Design: Semiweekly observations were performed on the mango trees with a view of assessing the density of alive, dead or parasitized R. invadens. Place and Duration of the Study: This study was conducted in Western Burkina Faso from May 2014 to April 2015. Methodology: A set of mango trees was selected in each of the following locations: Toussiana, Bérégadougou and Orodara. The assessment was conducted on 20 leaves (five leaves per cardinal point) that were picked up from each mango tree at each observation date. The parasitized mealybugs were kept inside pill boxes for two weeks and the emerging parasitoids were collected and kept in alcohol 70°. Data were registered and processed with the Microsoft Excel 2010 and SPSS software. Results: Results showed that R. invadens’ populations were more abundant during the wet season (May-September 2014) than the dry season (November 2014-April 2015) in all study locations. In general, parasitism was low. Some peaks of abundance were recorded in both wet and dry seasons. The evolution of the mortality of the insect pest was the same in all locations and peaks were observed from December 2014 to April 2015. The density of living R. invadens was significantly correlated with temperature and relative humidity. Impact of the parasitism due to Anagyrus mangicola Noyes and Gyranusoidea tebygi Noyes were also assessed and discussed. Conclusion: Periods of R. invadens populations’ abundance are well known in Western Burkina Faso. The parasitoids A. mangicola and G. tebygi are well established. The level of parasitism could be improved by releasing of A. mangicola and G. tebygi to control R. invadens efficiently.
Authors and Affiliations
Karim Nébié, Souleymane Nacro, Lenli Claude Otoidobiga, Dona Dakouo, Irénée Somda
Keywords
Related Articles
- EP ID EP351336
- DOI 10.9734/AJEA/2016/24819
- Views 109
- Downloads 0
Effect of Vermiwash Obtained from Different Sources (Neem, Rice Straw and Bagasse) and Standardised Hydroponics Solution on the Growth of Colocasia esculenta (Australian Poi) in Guyana
The chief economic activity of Guyana is agriculture. In the agricultural industries, the use of fertilizers for crop cultivation has been in common practice and has affected the crop quality over the years. The use of f...
Combining Ability, Heterosis and Inbreeding Effects in Faba Bean (Vicia faba L.)
The present investigation was carried out under insect free cage during 2011/12, 2012/13 and open field in 2013/14 growing seasons. A diallel-cross including reciprocals among six parents of faba bean (Giza 843, Nubaria...
Effects of High Night Temperatures on Cotton Leaf Gas Exchange and ATP Levels at Flowering
Aims: To monitor the effects of high night temperatures on leaf photosynthesis and respiration, stomatal conductance and adenosine triphosphate (ATP) levels of cotton during its reproductive stage. Study Design: A two-fa...
Growth and Yield of Maize (Zea mays L.) as Influenced by Integrated Weed Management under Temperate Conditions of North Western Himalayas
A field experiment was conducted at Experimental Station of CSIR-IIIM, Srinagar, J&K, India during kharif 2013 and 2014. The experiment was laid in a randomized block design with 4 weed management practices viz., W0= No...
Phenotypic Variation Analysis of Sweet Potato Germplasm Resources from Different Agro-climate Zones in the World
The objectives of this research were to study the phenotypic diversity of sweet potato germplasm collections using 16 agro-morphological traits. A field experiment was done with 123 cultivated varieties of sweet potato....