Field evaluation of melolure, a formate analogue of cuelure, and reassessment of fruit fly species trapped in Sydney, New South Wales, Australia

In Australia, tephritids are usually attracted to either cuelure or methyl eugenol. Methyl eugenol is a very effective lure, but cuelure is less effective likely due to low volatility. A new formate analogue of cuelure, melolure, has increased volatility, resulting in improved efficacy with the melon fruit fly, Bactrocera cucurbitae Coquillett. We tested the efficacy of melolure with fruit fly species in Sydney as part of the National Exotic Fruit Fly Monitoring programme. This monitoring programme has 71 trap sites across Sydney, with each trap site comprising separate Lynfield traps containing either cuelure, methyl eugenol, or capilure lure. In 2008, an additional Lynfield trap with melolure plugs was added to seven sites. In 2009 and 2010, an additional Lynfield trap with melolure wicks was added to 11 trap sites and traps were monitored fortnightly for 2 yr. Capture rates for melolure traps were similar to cuelure traps for Dacus absonifacies (May) and Dacus aequalis (Coquillet), but melolure traps consistently caught fewer Bactrocera tryoni (Froggatt) than cuelure traps. However, trap sites with both a cuelure and melolure traps had increased capture rates for D. absonifacies and D. aequalis, and a marginally significant increase for B. tryoni. Melolure plugs were less effective than melolure wicks, but this effect may be related to lure concentration. The broader Bactrocera group species were attracted more to cuelure than melolure while the Dacus group species were attracted more to melolure than cuelure. There is no benefit in switching from cuelure to melolure to monitor B. tryoni, the most important fruit fly pest in Australia.

Atom probe tomography at the University of Sydney

Summary: The Australian Microscopy & Microanalysis Research Facility (AMMRF) operates a national atom probe laboratory at The University of Sydney. This paperprovides a brief review and update of the technique of atom probe tomography (APT),together with a summary of recent research applications at Sydney in the scienceand technology of materials. We describe recent instrumentation advances such asthe use of laser pulsing to effect time-controlled field evaporation, the introductionof wide field of view detectors, where the solid angle for observation is increased byup to a factor of ∼20 as well as innovations in specimen preparation. We concludethat these developments have opened APT to a range of new materials that werepreviously either difficult or impossible to study using this technique because of theirpoor conductivity or brittleness.

Sydney Opera House on eBay: enabling technologies, community and social value

Digital forms of participation with significant places, such the Sydney Opera House, are increasing. What can they reveal about communities of this World Heritage site? How do contingent forms of participation evidence the interconnectedness of tangible, intangible and digital forms of cultural heritage? Critical heritage scholars assert that social value is a central issue in cultural heritage. In an Australian context, ‘social value’ is used to denote the significance that communities have for places of cultural heritage. Unlike other forms of place-significance such as scientific, historic or aesthetic values, the assessment of social value is complex and difficult to evidence. This theoretical paper explores participation in place through two digital instances, buying a real tile on eBay and a virtual one on Own Our House a crowdfunding venture by the Opera House Trust. The paper seeks to reveal the way in which such online artefacts demonstrate how cultural significance is entangled in the everyday and the individual experience. It argues that these seemingly insignificant moments of participation are implicated in the personal and the emotional by connecting work within critical heritage studies with the work of media scholar Jose van Dijck. Then the paper reflects on the way in which these everyday forms of participation through digital technologies disrupts and complicates established ideas about communities upon which local, state, national and international heritage systems are based.

In search of the philosopher’s stone: alchemy, ARM and the Sydney Opera House

Since the Middle Ages, alchemists sought the Philosopher’s Stone; a mythical elixir of life and longevity and essential for – chrysopoeia – the transmutation of lead to gold, of base metals to noble ones. The Sydney Opera House is widely regarded within the discipline of architecture as a ‘flawed masterpiece;’ its iconic exterior celebrated as Sydney’s golden architectural icon, while the interiors by Peter Hall, are largely criticised as the leaden cousins of the building’s original major and minor hall designs. Like the mythical Philosopher’s Stone, Jørn Utzon’s designs for the interior of the building remained elusive until Unseen Utzon (1994/5). This exhibition revealed the major hall (now the Concert Hall) as an expanse lined with gold and red-radiating waves, and the minor hall (now the Opera Theatre) awash in silver and blue, an apparition of Uzton’s genius and completion of his original vision.