In animal societies, chemical communication plays an important role in conflict and cooperation. For ants, cuticular hydrocarbon (CHC) blends produced by non-nestmates elicit overt aggression. We describe a sensory sensillum on the antennae of the carpenter ant Camponotus japonicus that functions in nestmate discrimination. This sensillum is multiporous and responds only to non-nestmate CHC blends. This suggests a role for a peripheral recognition mechanism in detecting colony-specific chemical signals.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1126/science.1105244 | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Cancer cell adhesion property on all-chitin composite films with reduced crystallinity.
Carbohydr Res
December 2024
Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima, 890-0065, Japan. Electronic address:
We previously prepared self-reinforced chitin composite (SR-ChC) films, also called all-chitin composites, comprising two components, that is, scale-down chitin nanofibers (SD-ChNFs) with high crystallinity and scale-down low-crystalline chitin (SD-LC-Ch) matrixes. In this study, we precisely evaluated hydrophilicity under water enviromental conditions and its effect on cell adhesion using human-derived cancer cells on the SR-ChC film surfaces. The surface analysis of the SR-ChC films with reduced crystallinity revealed reorientation of the molecular chain assemblies with amino groups in the SD-LC-Ch components in water.
View Article and Find Full Text PDFFabrication of self-reinforced chitin composites by double crystalline blend approach.
Int J Biol Macromol
January 2025
Graduate School of Science and Engineering, Kagoshima University, 1-21-40 Korimoto, Kagoshima 890-0065, Japan. Electronic address:
In this study, all-chitin composite films, named self-rein orced chitin composite (SR-ChC) films, were fabricated from aqueous acetic acid dispersions of highly-crystalline scaled-down chitin nanofibers (SD-ChNFs, crystalline index (CI) = 90.5 %) and scaled-down low-crystalline chitin (SD-LC-Ch, CI =57.4 %) powder.
View Article and Find Full Text PDFRebuilding Peripheral F, Cl, Br Footprints on Acceptors Enables Binary Organic Photovoltaic Efficiency Exceeding 19.7 .
Angew Chem Int Ed Engl
November 2024
State Key Laboratory and Institute of Elemento-Organic Chemistry, Frontiers Science Center for New Organic Matter, The Centre of Nanoscale Science and Technology and Key Laboratory of Functional Polymer Materials, Institute of Polymer Chemistry, Renewable Energy Conversion and Storage Center (RECAST), College of Chemistry, Nankai University, Tianjin, 300071, China E-mails.
Given homomorphic fluorine (F), chlorine (Cl) and bromine (Br) atoms are featured with gradually enlarged polarizability/atomic radius but decreased electronegativity, the rational screen of halogen species and locations on small molecular acceptors (SMAs) is quite essential for acquiring desirable molecular packing to boost efficiency of organic solar cells (OSCs). Herein, three isomeric SMAs (CH-F, CH-C and CH-B) are constructed by delicately rebuilding peripheral F, Cl, Br footprints on both central and end units. Such a re-permutation of peripheral halogens could not only maintain the structural symmetry of SMAs to the maximum, but also acquire extra asymmetric benefits of enhanced dipole moment and intramolecular charge transfer, etc.
View Article and Find Full Text PDFThermodynamics of Highly Interacting Blend PCHMA/dPS by TOF-SANS.
Macromolecules
July 2023
Department of Chemical Engineering, Imperial College London, London SW7 2AZ, U.K.
We investigate the thermodynamics of a highly interacting blend of poly(cyclohexyl methacrylate)/deuterated poly(styrene) (PCHMA/dPS) with small-angle neutron scattering (SANS). This system is experimentally challenging due to the proximity of the blend phase boundary (>200 °C) and degradation temperatures. To achieve the large wavenumber -range and flux required for kinetic experiments, we employ a SANS diffractometer in time-of-flight (TOF) mode at a reactor source and ancillary microscopy, calorimetry, and thermal gravimetric analysis.
View Article and Find Full Text PDFPrimary health care utilization in the first year after arrival by refugee sponsorship model in Ontario, Canada: A population-based cohort study.
PLoS One
July 2023
Edwin S.H. Leong Centre for Healthy Children, University of Toronto, Toronto, Canada.
Background: Canada's approach to refugee resettlement includes government sponsorship, a pioneering private sponsorship model and a third blended approach. Refugees are selected and supported differently in each approach including healthcare navigation. Little is known about how well private sponsors facilitate primary care navigation and whether this changed during the large-scale 2015 Syrian resettlement initiative characterized by civic and healthcare systems engagement.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!