TY - JOUR
T1 - Epidemiology of Beauveria bassiana in Controlled Populations of Bactericera cockerelli1
AU - Suárez-Núñez, Janette
AU - Cortez-Madrigal, Hipolito
AU - García-Munguía, Alberto Margarito
N1 - Funding Information:
To Secretaría de Investigación y Posgrado-Instituto Politécnico Nacional, México for the financial support for the making of this study. To the CONACYT- Mexico, for the grants to the first author. To the anonymous reviewers for the revision of the paper.
PY - 2017/12
Y1 - 2017/12
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=85034610019&partnerID=8YFLogxK
U2 - 10.3958/059.042.0423
DO - 10.3958/059.042.0423
M3 - Artículo
SN - 0147-1724
VL - 42
SP - 1041
EP - 1056
JO - Southwestern Entomologist
JF - Southwestern Entomologist
IS - 4
ER -