Interactions among vegetable-infesting aphids, the fungal pathogenMetarhizium anisopliae(Ascomycota: Hypocreales) and the predatory coccinellidCheilomenes lunata(Coleoptera: Coccinellidae)
| Autor: | Sunday Ekesi, Rachid Hanna, Samira A. Mohamed, Wakuma Bayissa, John M. Wagacha, Nguya K. Maniania, Godwin P. Kaaya |
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| Rok vydání: | 2015 |
| Předmět: |
0106 biological sciences
Aphid biology Cheilomenes lunata Hypocreales Biological pest control food and beverages Metarhizium anisopliae biochemical phenomena metabolism and nutrition biology.organism_classification 01 natural sciences Predation Toxicology 010602 entomology Insect Science Botany Entomopathogenic fungus Coccinellidae Agronomy and Crop Science 010606 plant biology & botany |
| Zdroj: | Biocontrol Science and Technology. 26:274-290 |
| ISSN: | 1360-0478 0958-3157 |
| DOI: | 10.1080/09583157.2015.1099148 |
| Popis: | Entomopathogenic fungi are among biocontrol agents being considered for the control of aphids on a variety of crops. Predatory coccinellids, although generalist, are also among important natural enemies that must be conserved for aphid management. Laboratory studies were carried out to investigate the interaction between three vegetable-infesting aphids, Metarhizium anisopliae isolate ICIPE 62 and the coccinellid predator Cheilomenes lunata. At a concentration of 1 × 108 conidial ml–1, the fungus was found to cause mortality of 7.5% to C. lunata, compared to 2.5% mortality in the control at 10 days post-treatment. Female adult C. lunata to which fungus-infected aphids were offered as prey never accepted them as food source in non-choice bioassays. However, live and dead non-infected aphids were fed upon. In choice bioassay, a total of 1–3 out of 24 infected non-sporulating aphids per species (average of 0.1–0.4 aphids per arena) were consumed by 48 h-starved C. lunata within a period of 60 min, but avoide... |
| Databáze: | OpenAIRE |
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