Epidemiology ofBeauveria bassianain Controlled Populations ofBactericera cockerelli
| Autor: | Janette Suárez-Núñez, Alberto M. Garcia-Munguia, Hipolito Cortez-Madrigal |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
0106 biological sciences
Veterinary medicine Bactericera cockerelli Ecology biology Strain (chemistry) fungi Beauveria bassiana biology.organism_classification 010603 evolutionary biology 01 natural sciences Conidium law.invention 010602 entomology Transmission (mechanics) Germination law Insect Science Bactericera Agronomy and Crop Science Horizontal transmission |
| Zdroj: | Southwestern Entomologist. 42:1041-1056 |
| ISSN: | 2162-2647 0147-1724 |
| DOI: | 10.3958/059.042.0423 |
| Popis: | The effect of four variables -- ratio of infected/healthy individuals, sex, interference from healthy males, and transmission time — was evaluated to know the potential of horizontal transmission of Beauveria bassiana (Balsamo) Vuillemin strain Bb-M to induce epizootics in controlled populations of tomato/potato psyllid, Bactericera cockerelli (Sulc). In addition, the time in which 50% of the conidia germinated (GT50) and response to humidity were evaluated. The Bb-M strain required high humidity to sporulate (≥ 93%) and had a GT50 of 12.7 hours. The proportion of infected/healthy insects was very correlated (r = 0.804, p ≤ 0.05) with dissemination of the entomopathogen, suggesting a larger number of infected insects increased the spread of the entomopathogen. The sex effect was not consistent in transmission of the entomopathogen, with tendency toward greater infection (94%) when only males were infected. Transmission by males fluctuated from 15 to 96.66%, with greatest transmission having a ratio of 1:10 (infected males:healthy females). The mean transmission time (Tt50) was 5.8 days. The results showed the evaluated strain by the auto-dissemination technique has potential for use in management of tomato psyllid; however, future studies are needed to design and evaluate strategies for application in the field. |
| Databáze: | OpenAIRE |
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