1. Host weed plant preference of Piezodorus guildinii Westwood (Hemiptera: Pentatomidae) and its susceptibility to Beauveria bassiana in common beans management.
- Author
-
Ramos, Yordanys, Sosa-Gómez, Daniel R., and Portal, Orelvis
- Subjects
- *
STINKBUGS , *BEAUVERIA bassiana , *PEST control , *INSECT ecology , *HOST plants - Abstract
Stink bugs pose a significant economic threat to legume crops globally. Our study aimed to evaluate the host weed plant preference of Piezodorus guildinii in common beans management and its susceptibility to Beauveria bassiana. Within those associated to P. vulgaris, four weed species were identified as hosts for P. guildinii. Although P. vulgaris was preferred, Sorghum halepense (L.) Pers. (Poaceae) showed lower preference. Among the weed hosts, Mimosa pellita (Hump. & Bonpl. ex Willd) (Mimosaseae) displayed a higher incidence (3.5 stink bugs/plant) of P. guildinii. Mortality induced by the native B. bassiana isolates Bb-51-SOE and Bb-15-SOM at 1 × 108 conidia mL−1 were significantly higher than the commercial strain peaked at 97.5% and 95%, respectively, after 8 days, with commercial strain Bb-18 achieving 72.5% mortality after 10 days. Median lethal concentration values (LC50) ranged from 1.04 × 106 to 9.7 × 107 conidia mL−1, with the Bb-51-SOE and Bb-15-SOM isolates showing the highest virulence, with median lethal time (LT50) values of 5.49 and 5.81 days, respectively. These findings provide important information on the ecology of P. guildinii in P. vulgaris cultivation and offer sustainable pest control alternatives, supporting integrated management programs in Cuba. [ABSTRACT FROM AUTHOR]
- Published
- 2024
- Full Text
- View/download PDF