Results 121 to 130 of about 67,340 (301)

Attraction range of a sex pheromone trap for the damson-hop aphid Phorodon humuli (Hemiptera: Aphididae)

, 2017
The attraction range of olfactory response by winged female gynoparae (autumn migrants that give birth to oviparae, the sexual females) and male damson–hop aphids Phorodon humuli (Schrank) is investigated in field experiments over 2 years by analyzing ...
Colin A. M. Campbell, Hardie, J., Jim Hardie, Lester J. Wadhams, Wadhams, L. J., Campbell, C. A. M.   +5 more
core   +1 more source

Field evaluation of synthetic aphid sex pheromone in enhancing suppression of aphid abundance by their natural enemies [PDF]

, 2016
The effects of lures containing aphid sex pheromone components (4aS,7S,7aR)-nepetalactone and (1R,4aS,7S,7aR)-nepetalactol on abundance of pea aphid, Acyrthosiphon pisum Harris, aphid parasitoids, predators and hyperparasitoids in alfalfa fields were ...
Ida, T. Y., Pickett, J. A., Takabayashi, J., Birkett, Michael A., Powell, W., Pickett, John, Nakashima, Y., Birkett, M. A., Nakashima, Yoshitaka, Taki, H., Taki, Hisatomo, Takabayashi, Junji, Powell, Wilf, Ida, Takashi Y.   +13 more
core   +1 more source

Sex Role–Dependent Behavioral and Architectural Divergence in a Jumping Spider

Integrative Zoology, EarlyView.
The graphical abstract contrasts sex‐equivalent cognition (route‐planning & memory) with female‐biased nest architecture. Both sexes perform similarly in cognitive tests, but females build complex, geometry‐matching nests while males make simple shelters.
Yirong Wang, Chu Jiang, Jing‐Xin Liu, Xiaoguo Jiao, Zhanqi Chen   +4 more
wiley   +1 more source

Nasonov pheromone of the honey bee, apis-mellifera l (hymenoptera, apidae) .1. Chemical characterization

, 1980
Composition of the Nasonov pheromone of the honey bee has been reexamined using new procedures, including analysis of pheromone from single live insects by capillary column GC-MS. Two new components have been identified, nerol and (E,E)-farnesol, and the
Pickett, J. A., Martin, A. P., Smith, M. C., Williams, Ingrid H., Williams, I. H.   +4 more
core   +1 more source

Size, Spines, and Nests: What Drives Variation in Death‐Feigning Behavior in Fungus‐Farming Ants?

Integrative Zoology, EarlyView.
We investigated death‐feigning (DF; thanatosis) in fungus‐farming ants, testing how stimulus intensity, morphology, and nest traits shape its occurrence and duration using generalized linear mixed models. Stronger stimuli increased both likelihood and duration, but most variation was structured across species, colonies, and individuals.
Danon Clemes Cardoso, Maykon Passos Cristiano, Jürgen Heinze   +2 more
wiley   +1 more source

A field trial of the synthetic oviposition pheromone with Culex quinquefasciatus Say (Diptera: Culicidae) in Kenya.

, 1988
The synthetic attractant pheromone 6-acetoxy-5-hexadecanolide in a formulation of 20 mg containing 5 mg of the active (−)-(5R,6S)-isomer in an effervescent tablet produced a high, positive overall response by gravid females of Culex quinquefasciatus Say ...
Pickett, J. A., Dawson, G. W., Dawson, G., Wadhams, L., Otieno, W. A., Pil, M., Otieno, W., Onyango, T., Pile, M. M., Pickett, J., Wadhams, L. J., Laurence, B. R., Onyango, T. O., Laurence, B.   +13 more
core   +1 more source

Temperature interacts with jack pine host defences to influence the growth of mountain pine beetle‐associated fungi

Agricultural and Forest Entomology, EarlyView.
Optimal growing temperatures varied with mountain pine beetle‐associated fungal species. There was only a marginal impact of temperature on the response of fungi to defensive monoterpenes of novel host pine. Interspecific facilitation occurred for Leptiographuim longiclavatum when grown in Ophiostoma montium‐induced treatments at optimal temperatures ...
Adrienne C. Bailey, Jennifer G. Klutsch, Kaitlyn Carey, Laureen F. I. Echiverri, Leah Flaherty   +4 more
wiley   +1 more source

Evidence for positive population‐level responses but not individual performance of sycamore aphids under elevated CO2

Agricultural and Forest Entomology, EarlyView.
The abundance and density of three common sycamore aphids increased under elevated CO2, although this was only statistically significant for Drepanosiphum platanoidis. The number of nymphs produced by individual D. platanoidis alates isolated in clip cages was not significantly affected, suggesting that population level response was not driven by ...
Liam M. Crowley, Carolina Mayoral, Abigail Enston, Jessica Money, Jon P. Sadler, Jeremy Pritchard, Rob A. MacKenzie, Scott A. L. Hayward   +7 more
wiley   +1 more source

From glacial echoes to timber pathways: Climatic–historical drivers and timber‐trade influence on the phylogeography of Ips sexdentatus in the Basque Country

Agricultural and Forest Entomology, EarlyView.
Ips sexdentatus is expanding across southern Europe, attacking multiple Pinus species and showing the ability to colonize trees at early stages of decline. Genetic analysis of 668 individuals revealed 106 haplotypes, with Iberian populations as diversity hotspots, reflecting long‐term refugial persistence alongside more recent demographic expansion ...
Dimitrios N. Avtzis, Nebai Mesanza, Aitor Saez de Zerain, Diego Llamazares, Eugenia Iturritxa   +4 more
wiley   +1 more source

Aphid sex pheromone components: age-dependent release by females and species-specific male response

, 1990
Sex pheromone released by Megoura viciae oviparae was collected and analysed for the quantity and re-lative amounts of each of the two biologically active compo-nents.
Stephen F. Nottingham, Pickett, J. A., Woodcock, C. M., Hardie, J., Nottingham, S., Lester J. Wadhams, Wadhams, L., Marcel Holyoak, Woodcock, C., Christine M. Woodcock, Holyoak, M., Nicholas, J., Jim Hardie Z, Pickett, J., Wadhams, L. J., Jill Nicholas, Nottingham, S. F., John A. Pickett   +17 more
core   +1 more source