1
|
Safari Murhububa I, Tougeron K, Bragard C, Fauconnier ML, Mugisho Bugeme D, Bisimwa Basengere E, Walangululu Masamba J, Hance T. The aphid Pentalonia nigronervosa (Hemiptera: Aphididae) takes advantage from the quality change in banana plant associated with Banana bunchy top virus infection. J Econ Entomol 2023; 116:1481-1489. [PMID: 37467484 DOI: 10.1093/jee/toad130] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/20/2022] [Revised: 06/01/2023] [Accepted: 06/23/2023] [Indexed: 07/21/2023]
Abstract
Viral diseases can change plant metabolism, with potential impacts on the quality of the plant's food supply for insect pests, including virus vectors. The banana aphid, Pentalonia nigronervosa Coquerel, is the vector of the Banana bunchy top virus (BBTV), the causal agent of Banana bunchy top disease (BBTD), the most devastating viral disease of bananas in the world. The effect of BBTV on the life-history traits and population dynamics of P. nigronervosa remains poorly understood. We therefore studied the survival rate, longevity, daily fecundity per aphid, tibia length, population growth, and winged morph production of a P. nigronervosa clone grown on healthy or infected, dessert, or plantain banana plants. We found that daily fecundity was higher on infected banana than on healthy banana plants (plantain and dessert), and on plantain than on dessert banana plants (healthy and infected). Survival and longevity were lower on infected dessert bananas than on other types of bananas. In addition, virus infection resulted in a decrease in aphid hind tibia length on both plant genotypes. The survival and fecundity table revealed that the aphid net reproduction rate (Ro) was highest on plantains (especially infected plantain), and the intrinsic growth rate (r) was highest on infected plants. Finally, the increase of aphids and alate production was faster first on infected plantain, then on healthy plantain, and lower on dessert banana (infected and uninfected). Our results reinforce the idea of indirect and plant genotype-dependent manipulation of P. nigronervosa by the BBTV.
Collapse
Affiliation(s)
- Ignace Safari Murhububa
- Earth and Life Institute, Ecology and Biodiversity, UCLouvain, Louvain-la-Neuve, Belgium
- Faculté des Sciences Agronomiques, Université Catholique de Bukavu, Bukavu, Democratic Republic of the Congo
- Institut Supérieur d'Etudes Agronomiques et Vétérinaires (ISEAV/Walungu), Walungu, Democratic Republic of the Congo
| | - Kévin Tougeron
- Earth and Life Institute, Ecology and Biodiversity, UCLouvain, Louvain-la-Neuve, Belgium
- UMR CNRS 7058 EDYSAN (Écologie et Dynamique des Systèmes Anthropisés), Université de Picardie Jules Verne, Amiens, France
- EIGC laboratory, Research Institute for Biosciences, Université de Mons, Mons, Belgium
| | - Claude Bragard
- Earth and Life Institute, Applied Microbiology, UCLouvain, Louvain-la-Neuve, Belgium
| | - Marie-Laure Fauconnier
- Laboratory of Chemistry of Natural Molecules, Gembloux Agro-Bio Tech, Université de Liège, Gembloux, Belgium
| | - David Mugisho Bugeme
- Faculté des Sciences Agronomiques, Université Catholique de Bukavu, Bukavu, Democratic Republic of the Congo
| | - Espoir Bisimwa Basengere
- Faculté des Sciences Agronomiques, Université Catholique de Bukavu, Bukavu, Democratic Republic of the Congo
| | - Jean Walangululu Masamba
- Institut Supérieur d'Etudes Agronomiques et Vétérinaires (ISEAV/Walungu), Walungu, Democratic Republic of the Congo
| | - Thierry Hance
- Earth and Life Institute, Ecology and Biodiversity, UCLouvain, Louvain-la-Neuve, Belgium
| |
Collapse
|
2
|
Bugeme DM, Knapp M, Ekesi S, Chabi-Olaye A, Boga HI, Maniania NK. Efficacy of Metarhizium anisopliae in controlling the two-spotted spider mite Tetranychus urticae on common bean in screenhouse and field experiments. Insect Sci 2015; 22:121-128. [PMID: 24470064 DOI: 10.1111/1744-7917.12111] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Accepted: 01/12/2014] [Indexed: 05/28/2023]
Abstract
The efficacy of aqueous and emulsifiable formulations of the fungus Metarhizium anisopliae isolate ICIPE78 was evaluated on the population density of Tetranychus urticae infesting common bean plants under screenhouse and field conditions. Synthetic acaricide abamectin was included as a check. Bean plants were artificially infested with T. urticae and allowed to multiply. Three treatments were applied in the screenhouse and 1 treatment in field trials. Mite density was recorded 2 d before spraying and weekly postspraying. The number of pods per plant, number of seeds per pod, and the dry weight of seeds per plant were recorded only in the screenhouse trials. In both screenhouse and field trials, fungal formulations applied at the concentration of 10(8) conidia/mL and the acaricide reduced the population density of mites as compared to the controls. There were significant differences in T. urticae population densities between the treatments at the various post-spraying sampling dates. In the screenhouse, the mite densities were near zero from 3-week postspraying in the treated leaves. At 4-week postspraying, there were no more leaves in the untreated control (T1) and in the control water + Silwet-L77 (T2). Fungal formulations were as effective as abamectin in reducing mite densities in both screenhouse and field experiments. There were significant differences in the production parameters during the 2 screenhouse trials, with fungal and abamectin treatments generally having the highest yield. Results of this study underline the potential of the M. anisopliae isolate ICIPE78 as an alternative to acaricides for T. urticae management.
Collapse
Affiliation(s)
- David Mugisho Bugeme
- International Centre of Insect Physiology and Ecology (ICIPE); Department of Botany, Jomo Kenyatta University of Agriculture and Technology (JKUAT), Nairobi, Kenya
| | | | | | | | | | | |
Collapse
|
3
|
Bugeme DM, Knapp M, Boga HI, Wanjoya AK, Maniania NK. Influence of Temperature on Virulence of Fungal Isolates of Metarhizium anisopliae and Beauveria bassiana to the Two-Spotted Spider Mite Tetranychus urticae. Mycopathologia 2008; 167:221-7. [DOI: 10.1007/s11046-008-9164-6] [Citation(s) in RCA: 28] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2008] [Accepted: 10/09/2008] [Indexed: 10/21/2022]
|