Examination of four species of aphid and four of whitefly showed that mannitol was present in each species of aphid, while sorbitol was present in the whitefly species. In the cotton aphid, Aphis gossypii Glover, the total body content of mannitol was considerably higher at noon than during the early morning. A similar increase in the sorbitol content of the silverleaf whitefly, Bemisia argenti...

Aphis gossypii Glover (Hemiptera: Aphididae) is a serious pest of cotton in northern China. A microsatellite analysis was used to characterize the genetic structure of A. gossypii populations from different geographic, host plant, and seasonal populations in 2014. Among 906 individuals, 507 multilocus genotypes were identified, with genotypic richness values of 0.07-1.00 for the populations. We...

While trade-offs between flight capability and reproduction is a common phenomenon in wing dimorphic insects, the molecular basis is largely unknown. In this study, we examined the transcriptomic differences between winged and wingless morphs of cotton aphids, Aphis gossypii, using a tag-based digital gene expression (DGE) approach. Ultra high-throughput Illumina sequencing generated 5.30 and 5...

Under laboratory and glasshouse conditions, the insecticidal activities of essential oil obtained from leaves tea tree plant by steam distillation was evaluated against cotton aphid, Aphis gossypii. The results showed that affected aphid population causing a higher mortality A. This study 50 μL/mL concentration caused 85.67% after 24 hrs exposure time when used as contact treatment. However, mo...

Aphids are infected with a wide variety of endosymbionts that can confer ecologically relevant traits. However, the bacterial communities of most aphid species are still poorly characterized. This study investigated the bacterial diversity of the cotton aphid Aphis gossypii associated with Bt cotton in northern China by targeting the V4 region of the 16S rDNA using the Illumina MiSeq platform. ...

In China, two invasive pests, Bemisia tabaci MEAM1 (Gennadius) and Frankliniella occidentalis (Pergande), often co-occur with the native pest, Aphis gossypii (Glover), on plants of Malvaceae and Cucurbitaceae. All three are preyed on by the native ladybird, Harmonia axyridis (Pallas); however, the native predator might be expected to prefer native prey to the exotic ones due to a shared evoluti...

The cotton aphid fungus, Neozygites fresenii (Entomophthorales: Neozygitaceae) is an important pathogen of the cotton aphid Aphis gossypii (Glover) (Homoptera: Aphididae). The capilliconidia of this pathogenic fungus adhere to the integument of aphids, beginning the cycle of mycosis. Few studies have been conducted that attempt to quantify or examine the points of infection of an entomopathogen...