Susceptibility variation to different entomopathogenic nematodes in Strategus aloeus L Coleoptera: ScarabaeidaeReportar como inadecuado




Susceptibility variation to different entomopathogenic nematodes in Strategus aloeus L Coleoptera: Scarabaeidae - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

SpringerPlus

, 4:620

Biomedical and Life Sciences

Abstract

Strategus aloeus L Coleoptera: Scarabaeidae, known as -Little bull- or oil palm -chiza- is a limiting pest in palm plantation in Cesar Colombia. Its management is based on pesticide use or old palm removal in renewal lots. Therefore, other alternatives are being sought out. Entomopathogenic nematodes isolated from the Colombian Andean region were evaluated. Under laboratory conditions S. aloeus third instar larvae exposure to 160 infective juveniles IJs per-cmSteinernema sp3 JCL027, S. feltiae SCT125, S. websteri JCL006, S. colombiense SNI0198, Heterorhabditis bacteriophora HNI0100, H. bacteriophora HASA702, H. indica SL0708 n = 20 was evaluated under a completely randomized design. The experiment was repeated three times on different dates. Significant differences were observed F = 11.127, df = 7. 24, p = 0.0054, registering mortality between 3 and 14 days. Steinernema sp3 JCL027 was the strain producing the highest mortality rate 19.3 ± 8 %, followed by H. bacteriophora HNI0100 5.2 ± 9 %. Thus, we evaluated Steinernema sp3 JCL0270 using a randomized design at 0, 160, 290, 420, 550, 680, 810 IJs-cm n = 12. The experiment was repeated three times on different dates. Significant differences were found among treatments 44 ± 5 %, F = 14.676; df = 6. 21, p = 0.001, with 680 IJs-cm producing the highest mortality followed by 810 IJs-cm 22 ± 5 %. In conclusion, this alternative must be further explored in search of pesticide use and cost reduction, in addition to young palm loss in a plantation.

KeywordsLittle bull Chiza Oil palm Steinernematidae Heterorhabditidae Larvae Biological control  Download fulltext PDF



Autor: A. Gómez - A. Sáenz-Aponte

Fuente: https://link.springer.com/







Documentos relacionados