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Ballarat Central, Australia

Marksomyia is proposed as a new subgenus of the genus Culicoides Latreille to embrace six species from Australia and New Guinea. Comparative descriptions of males and females of C. zentae sp. nov. and C. kayi sp. nov., pupae of C. zentae and redescriptions of C. marksi Lee & Reye, C. dycei Lee & Reye, C. parvimaculatus Lee & Reye and C. pseudostigmaticus Tokunaga are presented together with distributional data and keys for their specific determination. The designated type species of the subgenus is C. marksi. Marksomyia is further subdivided into three species complexes based on the shape and sclerotisation of the spermathecae. Copyright © 2011, Magnolia Press.

MacLachlan D.J.,Australian Quarantine and Inspection Service
Food Additives and Contaminants - Part A Chemistry, Analysis, Control, Exposure and Risk Assessment | Year: 2010

Physiologically based pharmacokinetic (PBPK) modelling has been used to examine the relative importance of physiological differences between laying hens and broiler chickens as well as between broiler chickens and ducks, geese, and turkeys in determining tissue residues. Following exposure in feed, there may be significant differences in tissue residues between laying hens and broiler chickens. The blood lipid content of laying versus broilers, the duration of exposure, and the fraction of the dose absorbed into the systemic circulation were important parameters together with tissue-to-blood partition coefficients. The potential for modelling to improve the extrapolation of residue transfer studies carried out using laying hens to broiler chickens and other poultry is demonstrated. © 2010 Taylor & Francis.

Maclachlan D.J.,Australian Quarantine and Inspection Service | Hamilton D.,Biosecurity Queensland
Food Additives and Contaminants - Part A Chemistry, Analysis, Control, Exposure and Risk Assessment | Year: 2010

An approach is presented for the prediction of pesticide residue concentrations in food and feed commodities produced from foliar-treated crops. It uses limited residue trial data and relies on information on spray retention and decline rates of residues following application. The use of the simple approach is demonstrated for residues of a variety of pesticides and the results compared with data sets evaluated by the Joint FAO/WHO Meeting on Pesticide Residues (JMPR) using expert judgement and also with estimates of high residues obtained using statistical methods. It is proposed that the approach should constitute an additional tool for the risk assessment of pesticide residues; it contributes to the estimation of maximum residue limits (MRLs) and high and median residues, which are needed for risk assessment. The approach should be particularly useful in situations where only a few residue trials are available such as often occurs for minor crops. © 2010 Taylor & Francis.

Scheffrahn R.H.,University of Florida | Crowe W.,Australian Quarantine and Inspection Service
Florida Entomologist | Year: 2011

Alate termite flights from mature colonies infesting marine vessels is a primary mechanism for anthropogenic transoceanic establishment of invasive termite species. A taxonomic review is given of 133 recorded termite infestations onboard vessels in Australia and Florida between 1986 and 2009. The differing governmental approaches to regulating entry by foreign boats appears to reflect the relative frequency of exotic termite establishments in Australia and Florida.

Maclachlan D.J.,Australian Quarantine and Inspection Service | Hamilton D.,Australian Department of Primary Industries and Fisheries
Pest Management Science | Year: 2011

Residue trial data reported by the Joint FAO/WHO Meeting on Pesticide Residues (JMPR) have been reviewed to establish whether or not the resulting residues in harvested commodities are proportional to the pesticide application rate used on the crop. Numerous sets of trials were identified where the only parameter varied was application rate or spray concentration. Analysis of this database in terms of application rate, spray concentration, formulation type, preharvest interval, crop, pesticide, residue level and application type confirms that residues scale with application rate (proportionality principle). It is anticipated that use of the proportionality principle by regulators and those interested in evaluating pesticide residue data will improve pesticide risk assessment. © 2011 Society of Chemical Industry.

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