Sublethal Effects of Emamectin Benzoate on Fall Armyworm, Spodoptera frugiperda (Lepidoptera: Noctuidae)
نویسندگان
چکیده
Fall armyworm (FAW), Spodoptera frugiperda (Lepidoptera: Noctuidae), is a highly invasive polyphagous pest that causes great economic losses to agricultural production. Emamectin benzoate (EMB) one of the most popular biopesticides with high antipest, anti-parasitic and anti-nematode activities low toxicity. The present study was conducted determine lethality EMB FAW for 24 h. Sublethal effects on parental offspring generations were also assessed. LC10, LC20 LC50 h third instar larvae 0.0127 mg/L, 0.0589 0.1062 respectively. A dose sublethal concentrations could significantly influence life cycle generations. concentration (LC20) prolonged pupal period male increased weight but not female, delayed oviposition longevity adult FAW. In generation, mortality pupae pre-adults, reduced development time pre-adult female. (LC10 LC20) decreased period. However, only LC10 F1 female fecundity. No significant difference found in intrinsic rates natural increase (rm), finite rate population (?), net reproductive (R0) exposed concentrations. This first table parameters two These findings can provide important implications rational utilization insecticides.
منابع مشابه
Induced Resistance Studied in Maize with the Fall Armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) and the Chemical Inducer Actigard
متن کامل
Bioactivity of Carica papaya (Caricaceae) against Spodoptera frugiperda (Lepidoptera: Noctuidae).
The composition of a chloroform seed extract of C. papaya was determined by GC-MS. Nineteen compounds were identified, with oleic (45.97%), palmitic (24.1%) and stearic (8.52%) acids being the main components. The insecticidal and insectistatic activities of the extract and the three main constituents were tested. Larval duration increased by 3.4 d and 2.5 d when the extract was used at 16,000 ...
متن کاملMortality Dynamics of Spodoptera frugiperda (Lepidoptera: Noctuidae) Immatures in Maize
We characterized the dynamics of mortality factors affecting immature developmental stages of the fall armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae). Multiple decrement life tables for egg and early larval stages of S. frugiperda in maize (Zea mays L.) fields were developed with and without augmentative releases of Telenomus remus Nixon (Hymenoptera: Platygastridae) from...
متن کاملAnatomy of the Ventral Eversible Gland of Fall Armyworm, Spodoptera Jrugiperda (Lepidoptera: Noctuidae), Larvae
متن کامل
Oil-soluble dyes for marking Spodoptera frugiperda (Lepidoptera: Noctuidae).
Although various biological aspects of Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) have been examined, adult movement and dispersal of this insect pest is not well understood. Release-recapture techniques by using marked insects is a useful approach for dispersal studies; however, the marking technique should not significantly affect insect biology or behavior. Therefore, the ef...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Agriculture
سال: 2022
ISSN: ['2077-0472']
DOI: https://doi.org/10.3390/agriculture12070959