Results 61 to 70 of about 6,676 (211)

Russian wheat aphid: a model for genomic plasticity and a challenge to breeders

Insect Science, EarlyView.
Invasive foundress finds suitable habitat and reproduces through pathogenesis. Wingless females produce life offspring quickly, which leads to high population densities. High population densities result in competition, which may induce epigenetic changes and wing development for dispersal.
Astrid Jankielsohn, Vicky L. Tolmay, Marlon‐Schylor Luke le Roux, Lintle Mohase, Mpho S. Mafa, Vittorio F. Nicolis, Eduard Venter, Nicolaas Francois Visser Burger, Anna‐Maria Botha   +8 more
wiley   +1 more source

Characterization of the dynamic microbiome evolution across thrips species

Insect Science, EarlyView.
Comprehensive survey of the microbiome in thrips. The dominant bacterial genera found in thrips include intracellular ones, such as Wolbachia and Spiroplasma, and extracellular ones, including Serratia, Pantoea, and Acinetobacter. We isolated and sequenced high‐quality genomes of two dominant symbionts, Pantoea dispersa and Serratia marcescens.
Xiaodi Hu, Zhaohui Shi, Yangwei Gao, Hanze Zheng, Lin Lin, Jian‐Ping Chen, Yong Chen, Chuan‐Xi Zhang, Yiyuan Li   +8 more
wiley   +1 more source

Do aphid endosymbiotic bacteria influence parasitoid searching behaviour through changes in aphid honeydew production?

Ecological Entomology, EarlyView.
Hamiltonella defensa infection increases honeydew production in certain aphid genotypes, potentially modifying aphid feeding behaviour. Parasitoid wasps, Aphidius ervi, are more attracted to honeydew from H. defensa‐infected aphids; though larger honeydew amounts may slightly deter searching.
Desiré Macheda, Alexandre Foito, Katharine F. Preedy, Colin J. Alexander, Ankush Prashar, Alison J. Karley   +5 more
wiley   +1 more source

A defensive symbiont and a plant virus confer direct and discrete phenotypes to a cereal aphid in a context‐dependent manner

Ecological Entomology, EarlyView.
Different BYDV‐PAV isolates exert contrasting effects on aphid fitness, including reproduction and winged production. Different BYDV‐PAV isolates have contrasting effects on aphid dispersal patterns. Aphid feeding behaviour is modulated by the presence of endosymbionts and plant viruses.
Daniel J. Leybourne, Andrea Ceribelli, Sharon E. Zytynska   +2 more
wiley   +1 more source

Melatonin in the seasonal response of the aphid Acyrthosiphon pisum

Insect Science, 2018
AbstractAphids display life cycles largely determined by the photoperiod. During the warm long‐day seasons, most aphid species reproduce by viviparous parthenogenesis. The shortening of the photoperiod in autumn induces a switch to sexual reproduction. Males and sexual females mate to produce overwintering resistant eggs.
Miquel Barberà, Laura Escrivá, Jorge Mariano Collantes‐Alegre, Giuseppe Meca, Ezio Rosato, David Martínez‐Torres   +5 more
openaire   +4 more sources

A highly infective plant-associated bacterium influences reproductive rates in pea aphids [PDF]

Royal Society Open Science, 2016
Pea aphids, Acyrthosiphon pisum, have the potential to increase reproduction as a defence against pathogens, though how frequently this occurs or how infection with live pathogens influences this response is not well understood.
Tory A. Hendry, Kelley J. Clark, David A. Baltrus   +2 more
doaj   +1 more source

From biology to biotechnology: Host‐regulation factors from parasitoid wasps are a source of bioactive molecules with translational potential

Insect Molecular Biology, EarlyView.
Parasitoid wasps deploy maternal and embryonic factors to reprogramme host physiology. Venom, calyx fluid, polydnaviruses, teratocytes and larval secretions act in a coordinated, compartmentalised manner. Host‐regulation factors are promising sources of insecticidal, antimicrobial and bioinspired translational molecules.
Ciro Pedro G. Pinto, Andrew A. Walker, Glenn F. King   +2 more
wiley   +1 more source

Production of Recombinant Lectins from Garlic (Allium Sativum) Bulbs and Their Insecticidal Activity Against Hemipteran Insects. [PDF]

, 2008
Lectins have long been established as potential agents for use in control of insect pest species. In this study the use of garlic bulb lectins against phloem-feeding hemipteran insect pests is investigated.
Wiles, Duncan Peter
core  

Aphidius eadyi n. sp. (Hymenoptera: Aphidiidae), a widely distributed parasitoid of the pea aphid, Acyrthosiphon pisum (Harris) in the Palearctic [PDF]

, 1980
Aphidius eadyi n. sp., a parasitoid of Acyrthosiphon pisum in the west Palearctic is described. Its distribution and interspecific relations (crossing experiments) to a related species, Aphidius smithi, are elucidated.
Jack Hall, Dan González, Petr Stary
core   +1 more source

RNA activation in insects: From emerging evidence to molecular applications

Insect Molecular Biology, EarlyView.
Canonical RNA activation involves small RNAs interacting with promoter sequences, but there is also evidence of non‐canonical RNAa in eukaryotes. Emerging evidence suggests the presence of RNAa in insects. RNAa can be utilised as a tool for functional genomic studies in insects.
Sassan Asgari
wiley   +1 more source