Publications by authors named "Ling-Hang Guo"
Megalurothrips usitatus (Bagnall) (Thysanoptera: Thripidae) and Frankliniella intonsa (Trybom) (Thysanoptera: Thripidae) have been detrimental to cowpea production in many countries. Laboratory experiments were conducted to determine the prey stage preference and functional response of 2 predatory mites species, Neoseiulus barkeri (Hughes) (Acari: Phytoseiidae), and Neoseiulus californicus (McGregor) (Acari: Phytoseiidae), towards 2 thrips species (TS), M. usitatus, and F.
View Article and Find Full Text PDFThe thrips Megalurothrips usitatus Bagnall and Frankliniella intonsa Trybom (Thysanoptera: Thripidae) are important pests in cowpea-growing areas of south China. Parthenogenesis is an important reproductive form of thysanopterans, and plays an important role in maintaining population growth. To understand the developmental and reproductive characteristics of these 2 thrips species during parthenogenesis, we compared the age-stage life tables of M.
View Article and Find Full Text PDFSystemic neonicotinoid insecticides (NEOs) applied by seed-treatment or root application have emerged as a prevalent strategy for early-season insect pest management. This research investigated the effectiveness of imidacloprid and thiamethoxam, administered through root irrigation, in managing thrips in cowpea [Vigna unguiculata (Linn.) Walp.
View Article and Find Full Text PDFArticle Synopsis
- Two thrips species are significant pests of cowpea in South China, and a study compared their growth and reproduction under different seasonal environments.
- The findings revealed that the first species (Bagnall) had a longer preadult period and shorter adult female longevity compared to the second species (Trybom), along with other differences in longevity and reproductive rates.
- Overall, Bagnall showed higher reproductive rates and faster generation times than Trybom, which helps enhance understanding of how these pests compete and thrive in similar ecological conditions.
Article Synopsis
- - The study investigates the effectiveness of spinetoram, a new insecticide, in controlling the economically significant bean flower thrips, Megalurothrips usitatus, which affects cowpea crops in South China.
- - Results indicate that spinetoram demonstrates greater toxicity and field efficacy against thrips compared to six other conventional insecticides, especially when used with adjuvants like Silwet 806 and Silwet 618.
- - The combination of spinetoram with Silwets significantly reduces thrips infestation by 50% and 40% within 3 and 7 days, respectively, while mixtures with other adjuvants like AgroSpreds showed no significant benefits.