Results 41 to 50 of about 5,934 (169)

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

Multi-scale characterization of symbiont diversity in the pea aphid complex through metagenomic approaches

Microbiome, 2018
Background Most metazoans are involved in durable relationships with microbes which can take several forms, from mutualism to parasitism. The advances of NGS technologies and bioinformatics tools have opened opportunities to shed light on the diversity ...
Cervin Guyomar, Fabrice Legeai, Emmanuelle Jousselin, Christophe Mougel, Claire Lemaitre, Jean-Christophe Simon   +5 more
doaj   +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

Gene knockdown by RNAi in the pea aphid Acyrthosiphon pisum [PDF]

BMC Biotechnology, 2007
RNA interference (RNAi) is a powerful method to inhibit gene expression in a sequence specific manner.Here, we described the development of RNAi by micro-injection of double-stranded RNA (dsRNA) in the pea aphid Acyrthosiphon pisum. Injection of dsRNA into whole aphid body induced the silencing of two marker genes with different expression patterns ...
Jaubert, Stéphanie, Le Trionnaire, Gaël, Bonhomme, Joel, Christophides, G.K., Rispe, Claude, Tagu, Denis   +5 more
openaire   +5 more sources

Modulation of legume defense signaling pathways by native and non-native pea aphid clones

Frontiers in Plant Science, 2016
The pea aphid (Acyrthosiphon pisum) is a complex of at least 15 genetically different host races that are native to specific legume plants, but can all develop on the universal host plant Vicia faba.
Carlos Sanchez-Arcos, Michael Reichelt, Jonathan Gershenzon, Grit Kunert   +3 more
doaj   +1 more source

Differential Varietal Responses in Faba Bean Concerning Pea Aphid and Pea Necrotic Yellow Dwarf Virus (PNYDV) When Intercropped With Oat

Journal of Applied Entomology, EarlyView.
ABSTRACT The pest status of pea aphid (Acyrthosiphum pisum H.) in faba bean (Vicia faba L.) cultivation has gained importance because it transmits Pea necrotic yellow dwarf virus (PNYDV), a novel nanovirus in Europe. This study evaluated two faba bean varieties, ‘Fuego’ and ‘GL Sunrise’, grown under sole crop (SC) and intercrop (IC) conditions with oat
Ahmed Berawe, Heiko Ziebell, Judith Nora Seeger, Helmut Saucke   +3 more
wiley   +1 more source

Short-Term Evolution in the Size and Shape of Pea Aphids [PDF]

Evolution, 1996
Phenotypic evolution in contemporary populations can generally be witnessed only when novel selective forces produce rapid evolution. Examples of conditions that have led to rapid evolution include drastic environmental change, invasion of a new predator, or a host-range expansion.
Sara, Via, Alison J, Shaw
openaire   +2 more sources

Expression differences in Aphidius ervi (Hymenoptera: Braconidae) females reared on different aphid host species [PDF]

PeerJ, 2017
The molecular mechanisms that allow generalist parasitoids to exploit many, often very distinct hosts are practically unknown. The wasp Aphidius ervi, a generalist koinobiont parasitoid of aphids, was introduced from Europe into Chile in the late 1970s ...
Gabriel I. Ballesteros, Jürgen Gadau, Fabrice Legeai, Angelica Gonzalez-Gonzalez, Blas Lavandero, Jean-Christophe Simon, Christian C. Figueroa   +6 more
doaj   +2 more sources

Deciphering Role of Endophytes in Plant Defences and Biotic Stress Resilience Across Families

Plant, Cell &Environment, EarlyView.
ABSTRACT Plant families generate distinct repertoires of specialised metabolites that govern their biotic interactions. Endophytes strengthen host plant defence mechanisms and tolerance to biotic challenges by upregulating metabolite biosynthesis, modifying precursor compounds into more potent forms, or by directly synthesising analogous defence ...
S. Aneeqa Noor, Kavita Verma, Nishu, Barkat Hussain, Vartika Mathur   +4 more
wiley   +1 more source

Decoding chemical profiles in insect‐induced gall development: Insights from Phacopteron lentiginosum–Garuga pinnata interactions

Entomological Science, Volume 29, Issue 3, September 2026.
Analysis of volatile and non‐volatile metabolites across three developmental stages (3rd, 4th and 5th instar nymphal stages) of leaf galls induced by Phacopteron lentiginosum on Garuga pinnata revealed that the 3rd stage exhibited the highest chemical diversity and concentration followed by 4th and 5th stages.
V. K. Bobika, M. Nasser, K. S. Shameer
wiley   +1 more source