sustainability through science & innovation

scientific expertise

Our people

cesar's expertise in agricultural entomology, genetics and wildlife ecology is backed by a team of specialist scientific consultants, many of whom are PhD qualified with a wealth of experience working to Australian and international standards. Our team has a combined total of over 30 years consulting experience and more than 80 years experience in science and research. We apply the highest scientific rigour to every client project, with our team having published over 150 peer-reviewed articles in national and international science journals.

Collaborations and associations

cesar has strong collaborative links with several high-calibre research and government organisations, in particular the University of Melbourne and the Bio21 Molecular Science Institute. Our close association with the University of Melbourne provides connections to world-leading scientists and cutting-edge facilities. We also work with a number of expert consultants, providing cesar with access to a range of specialised skills and equipment.

Equipment and facilities

cesar has a comprehensive range of field and laboratory equipment at our disposal. Both divisions of cesar utilise the latest equipment and facilities to provide a complete service to our clients. Our equipment and facilities include:

Biodiversity Conservation

  • acoustic and radio telemetry equipment
  • aquatic trapping and terrestrial fauna surveying equipment
  • 4wd vehicles equipped with remote access equipment
  • microchipping and tagging devices for animal identification
  • PC2 laboratories and cloning facilities
  • high throughput gradient and real time (quantitative) PCR machines
  • DNA/RNA quantification spectrometer
  • fluorescent sequencer and genotyping machine
  • specialised software for genotype scoring, genetic analyses, and sequence alignment and editing
  • GIS mapping capabilities for genetic analyses

Sustainable Agriculture

  • glasshouse and shadehouse facilities
  • controlled environment cabinets designed for insect rearing
  • purpose-built pesticide testing facilities
  • state-of-the-art microscopes
  • specialised photography equipment
  • UniBoom trailing sprayer with a 10m span

 Recent peer-review publications

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    2015, 20142013, 2012, 2011, 2010, 2009, 2008
    2007, 2006, 2005, 2004, 2003, 2002, 2001, 2000



    Cheng X, Hoffmann A, Maino J and Umina P. A cryptic diapause strategy in Halotydeus destructor (Tucker) (Trombidiformes: Penthaleidae) induced by multiple cues. Pest Management Science (in press).

    Cheng X, Umina P and Hoffmann A. Influence of previous host plants on the reproductive success of a polyphagous mite pest, Halotydeus destructor. Journal of Economic Entomology (in press).

    de Little SC, Casas-Mulet R, Patulny L, Wand J, Miller KA, et al.. Minimising biases in expert elicitations to inform environmental management: Case studies from environmental flows in Australia. Environmental Modelling & Software 100: 146-158.

    Endersby-Harshman NM, Weeks AR, Hoffmann AA. The detection and significance of emerging insecticide resistance in mosquitoes. Microbiology Australia 39: 80-83.

    Lugg WH, Griffiths J, van Rooyen AR, Weeks AR, Tingley R. Optimal survey designs for environmental DNA sampling. Methods in Ecology and Evolution 9: 1049-1059. 

    Maino J, Binns M and Umina P. No longer a west-side story – pesticide resistance discovered in the eastern range of a major Australian crop pest, Halotydeus destructor (Acari: Penthaleidae). Crop and Pasture Science 69: 216-221.

    Miller KA, Casas-Mulet R, de Little SC, Stewardson MJ, Koster WM et al.. Deficiencies in our understanding of the hydro-ecology of several native Australian fish: a rapid evidence synthesis. Marine and Freshwater Research (in press)

    Song SV, Anderson C, Good RT, Leslie S, Wu Y et al.. Population differentiation between Australian and Chinese Helicoverpa armigera occurs in distinct blocks on the Z-chromosome. Bulletin of Entomological Research. 2018 Feb:1-4.

    Tingley R, Greenless M, Oertel S, van Rooyen AR, Weeks AR. Environmental DNA sampling as a surveillance tool for cane toad Rhinella marina introductions on offshore islands. Biological Invasions (in press).

    Webb JA, de Little SC, Miller KA and Stewardson MJ. Quantifying and predicting the benefits of environmental flows: Combining large-scale monitoring data and expert knowledge within hierarchical Bayesian models. Freshwater Biology (in press)


    Bellgrove A, van Rooyen A, Weeks AR, Clark JS, Doblin MA and Miller AD. New resource for population genetics studies on the Australasian intertidal brown alga, Hormosira banksii: isolation and characterization of 15 polymorphic microsatellite loci through next generation DNA sequencing. Journal of Applied Phycology 29 (3): 1721-1727.

    de Little SC and Umina P. Susceptibility of Australian Myzus persicae (Hemiptera: Aphididae) to three recently registered insecticides: spirotetramat, cyantraniliprole and sulfoxaflor. Journal of Economic Entomology 110: 1764-1769; DOI: 10.1093/jee/tox132

    de Little SC, Edwards O, van Rooyen A, Weeks A and Umina P. Discovery of metabolic resistance to neonicotinoids in green peach aphids (Myzus persicae) in Australia. Pest Management Science 73: 1611-1617; DOI: 10.1002/ps.4495

    Douglas J, Hoffmann A, Macfadyen S and Umina P. Crop seedling susceptibility to Armadillidium vulgare (Isopoda: Armadillidiidae) and Ommatoiulus moreletii (Diplopoda: Iulidae). Journal of Economic Entomology 110: 2679-2685; DOI: 10.1093/jee/tox275

    Edwards O, Walsh T, Metcalfe S, Tay W, Hoffmann A, Mangano P, Lord A, Micic S and Umina P (2017). A genomic approach to identify and monitor a novel pyrethroid resistance mutation in the redlegged earth mite, Halotydeus destructor. Pesticide Biochemistry and Physiology 144: 83-90.

    Guillera-Arroita G, Lahoz Monfort JJ, van Rooyen AR, Weeks AR and Tingley R. Dealing with false positive and false negative errors about species occurrence at multiple levels. Methods in Ecology and Evolution 8: 1081–1091

    Maino JL and Kearney MR. The universality of the von Bertalanffy growth curve: Comment on “Physics of metabolic organization” by Marko Jusup et al. Physics of life reviews. 20: 63-65.

    Maino JL, Pirtle EI and Kearney MR. The effect of egg size on hatch time and metabolic rate: theoretical and empirical insights on developing insect embryos. Functional Ecology. 31 (1): 227-234. 

    Maino J, Umina PA and Hoffmann A (2017). Climate contributes to the evolution of pesticide resistance. Global Ecology and Biogeography DOI: 10.1111/geb.12692

    Umina P, Lord A, Micic S and Edwards O. Discovery and characterisation of field resistance to organophosphorus chemicals in a major mite pest, Halotydeus destructor. Pest Management Science 73: 1719-1724; DOI: 10.1002/ps.4520

    Van Oppen MJH, Gates RD, Blackall LL, Cantin N, Chakravarti LJ, Chan WY, Cormick C, Crean A, Damjanovic K, Epstein H, Harrison PL, Jones TA, Miller M, Pears RJ, Peplow LM, Raftos DA, Schaffelke B, Stewart K, Torda G, Wachenfeld D, Weeks AR and Putnam HM. Shifting paradigms in restoration of the world’s coral reefs. Global Change Biology 23: 3437-3448.

    Weeks AR, Heinze D, Perrin L, Stoklosa J, Hoffmann AA, van Rooyen A, Kelly T and Mansergh I. Genetic rescue increases fitness and aids rapid recovery of an endangered marsupial population. Nature Communications in press.


    Alavi, Y, van Rooyen A, Elgar MA, Jones TM and Weeks AR. Novel microsatellite markers suggest the mechanism of parthenogenesis in Extatosoma tiaratum is automixis with terminal fusion. Insect Science DOI:10.1111/1744-7917.12373

    Clouston A, Edwards O and Umina PA. An insecticide baseline study of Australian broadacre aphids. Crop and Pasture Science 67: 236-244.

    Hill MP, Hoffmann AA, Umina PA, Cheng X and Miller AD. Genetic analysis along an invasion pathway reveals endemic cryptic taxa, but a single species with little population structure in the introduced range. Diversity and Distributions 22: 57-72.

    Kriesner P, Conner WR, Weeks AR, Turelli M and Hoffmann AA. Persistence of a Wolbachia infection frequency cline in Drosophila melanogaster and the possible role of reproductive dormancy. Evolution 70: 979-997.

    Maino JL, Kong JD, Hoffmann AA, Barton MG and Kearney MR. Mechanistic models for predicting insect responses to climate change. Current opinion in insect science. 17: 81-86.

    Miller AD, van Rooyen A, Rašić G, Ierodiaconou DA, Gorfine HK, Day R, Wong C, Hoffmann AA and Weeks AR. Contrasting patterns of population connectivity between regions in a commercially important mollusc Haliotis rubra: integrating population genetics, genomics and marine LIDAR data. Molecular Ecology 25 (16): 3845-3864.

    Smart AS, Weeks AR, van Rooyen AR, Moore A, McCarthy MA and Tingley R. Assessing the cost-efficiency of environmental DNA sampling. Methods in Ecology and Evolution 7: 1291-1298.

    Umina P, Schiffer M, Parker, P and Hoffmann A. Distribution and influence of grazing on wheat curl mites (Aceria tosichella Keifer) within a wheat field. Journal of Applied Entomology 140: 426-433; DOI:10.1111/jen.12268

    Wang X, Tang C, Severi J, Butterly CR and Baldock JA. Rhizosphere priming effect on soil organic carbon decomposition under plant species differing in soil acidification and root exudation.  New Phytologist 211 (3) 864 - 873.

    Weeks AR, Stoklosa J and Hoffmann AA. Conservation of genetic uniqueness of populations may increase extinction likelihood of endangered species: the case of Australian mammals. Frontiers in Zoology 13: a31.


    Arthur A, Hoffmann A and Umina P. Challenges in devising economic spray thresholds for a major pest of Australian canola, the redlegged earth mite (Halotydeus destructor). Pest Management Science DOI 10.1002/ps.3952.

    Hill MP, Hoffmann AA, Umina PA, Cheng X and Miller AD. Genetic analysis along an invasion pathway reveals endemic cryptic taxa, but a single species with little population structure in the introduced range. Diversity and Distributions DOI:10.1111/ddi.12385.

    Hoffmann A, Griffin P, Dillon S, Rane R, Byrne M, Jordan R, Oakeshott J, Weeks A, Joseph L, Lockhart P, Borevitz J and Sgrò C. A framework for incorporating evolutionary genomics into biodiversity conservation and management. Climate Change Responses 2: 1.

    Llandres AL, Marques GM, Maino JL, Kooijman S, Kearney MR and Casas J. A dynamic energy budget for the whole life‐cycle of holometabolous insects. Ecological Monographs. 85 (3): 353-371. 

    Maino JL and Kearney MR. Testing mechanistic models of growth in insects. Proc. R. Soc. B. 282 (1819); DOI: 10.1098/rspb.2015.1973 

    McDonald G, Umina P, Macfadyen S, Mangano P and Hoffmann A. Predicting the timing of first generation egg hatch for the pest redlegged earth mite Halotydeus destructor (Tucker) (Acarina: Penthaleidae). Experimental and Applied Acarology 65: 259-276.

    Mee PT, Weeks AR, Walker PJ, Hoffmann AA and Duchemin JB. Detection of low-level Cardinium and Wolbachia infections in Culicoides. Applied and Environmental Microbiology 81: 6177-6188. 

    Smart AS, Tingley R, Weeks AR, van Rooyen AR and McCarthy MA. Environmental DNA sampling is more sensitive than a traditional survey technique for detecting an aquatic invader. Ecological Applications 25: 1944-1952.

    Song SV, Downes S, Parker T, Oakeshott JG, Robin C. High nucleotide diversity and limited linkage disequilibrium in Helicoverpa armigera facilitates the detection of a selective sweep. Heredity 115 (5): 460.

    Tingley R, Weeks AR, Smart AS, van Rooyen AR, Woolnough AP and McCarthy MA. European newts establish in Australia, marking the arrival of a new amphibian order. Biological Invasions 17(1): 31-37.

    Umina P, Jenkins S, McColl S, Arthur A, and Hoffmann A. A Framework for Identifying Selective Chemical Applications for IPM in Dryland Agriculture. Insects 6: 988-1012; DOI:10.3390/insects6040988

    Webb JA, Miller KA, Stewardson MJ, de Little SC, Nichols SJ and Wealands SR. An online database and desktop assessment software to simplify systematic reviews in environmental science. Environmental Modelling & Software 64: 72-79.

    Weeks AR, Moro D, Thavornkanlapachai R, Taylor HR, White NE, Weiser EL and Heinze D. Conserving and enhancing genetic diversity in translocation programs. In Advances in reintroduction biology of Australian and New Zealand fauna. Eds Armstrong DP, Hayward MW, Seddon PJ. CSIRO Publishing, Clayton Victoria Australia.

    White VL, Endersby NM, Chan J, Hoffmann AA and Weeks AR. Developing Exon-Primed Intron-Crossing (EPIC) markers for population genetic studies in three Aedes disease vectors. Insect Science 22: 409-423. 


    Arthur A, Hoffmann A and Umina P. Estimating densities of the pest redlegged earth mite, Halotydeus destructor, in canola. Journal of Economic Entomology 107: 1626-1638.

    Danne AW, Llewellyn R, Huwer RK and Furlong MJ. Fruitspotting bugs, Amblypelta nitida Stål and A. lutescens lutescens Distant (Hemiptera: Coreidae): a review of the potential for integrated management practices. Austral Entomology 53(1): 112-123.

    Macfadyen S, Hardie D, Fagan L, Stefanova K, Perry K, DeGraaf H, Holloway J, Spafford H and Umina P. Reducing insecticide use in broad-acre grains production: an Australian study. PLOS ONE 9: e89119.

    Maino JL and Kearney MR. Ontogenetic and interspecific metabolic scaling in insects. The American Naturalist. 184 (6): 695-701.

    Maino JL and Kearney MR. Ontogenetic and interspecific scaling of consumption in insects. Oikos. 124 (12): 1564-1570.

    Maino JL, Kearney MR, Nisbet RM and Kooijman SALM. Reconciling theories for metabolic scaling. Journal of Animal Ecology 83 (1): 20-29.  

    Miller AD, Sweeney OF, Whiterod NS, van Rooyen AR, Hammer M, Weeks AR. Critically low levels of genetic diversity in fragmented populations of the endangered Glenelg spiny freshwater crayfish (Euastacus bispinosus). Endangered Species Research 25 (1): 43 - 55).

    Rasic G, Filipovic I, Weeks AR, Hoffmann AA. Genome-wide SNPs lead to strong signals of geographic structure and relatedness patterns in the major arbovirus vector, Aedes aegypti. BMC Genomics 15 (1): 275. 

    Serena M, Williams GA, Weeks, AR and Griffiths J. Variation in platypus (Ornithorhynchus anatinus) life-history attributes and population trajectories in urban streams. Australian Journal of Zoology 62: 223-234.

    Tingley R, Weeks AR, Smart AS, van Rooyen A, McCarthy MA. Establishment of the Amphibian Order Caudata in Australia. Biological Invasion Notes in press.

    Umina PA, Edwards O, Carson P, van Rooyen A and Anderson A. High levels of resistance to carbamate and pyrethroid chemicals widespread in Australian Myzus persicae (Hemiptera: Aphididae) populations. Journal of Economic Entomology 107 (4): 1626-1638.

    Webb JA, de Little SC, Miller KA, Stewardson MJ, Rutherfurd ID, Sharpe AK, Patulny L and Poff NL. A general approach to predicting ecological responses to environmental flows: making best use of the literature, expert knowledge, and monitoring data. River Research and Applications 31 (4): 505 - 514.

    Webb JA, Miller KA, de Little SC and Stewardson MJ. Overcoming the challenges of monitoring and evaluating environmental flows through science-management partnerships. International Journal of River Basin Management 12(2): 111-121.

    Weeks AR, Smith MJ, van Rooyen A, Maple D and Miller AD. A single panmictic population of endemic red crabs, Gecarcoidea natalis, on Christmas Island with high levels of genetic diversity. Conservation Genetics 15 (4): 909 - 919.


    Arthur AL, Hoffmann AA and Umina PA. Impact of Halotydeus destructor on crop seedlings at different plant developmental stages and levels of moisture stress. Environmental Entomology 45(5): 998-1012.

    Arthur AL, McColl S and Umina PA. Synthetic pesticides show little efficacy against Balaustium medicagoense (Prostigmata: Erythraeidae) in the field compared with other pest mites. Australian Journal of Entomology 52(3): 259-267.

    Coleman RA, Weeks AR and Hoffmann AA. Balancing genetic uniqueness and genetic variation in determining conservation and translocation strategies: a comprehensive case study of threatened dwarf galaxias, Galaxiella pusilla (Mack) (Pisces: Galaxiidae). Molecular Ecology 22: 1820-1835.

    Furlan EM, Griffiths J, Gust N, Handasyde KA, Grant TR, Gruber B and Weeks AR. Dispersal patterns and population structuring among platypuses, Ornithorhynchus anatinus, throughout south-eastern Australia. Conservation Genetics 14: 837-853.

    Griffiths J, Kelly T and Weeks A. Net-avoidance behavior in platypuses. Australian Mammalogy 35: 245-247.

    Jenkins S, Hoffmann AA, McColl S, Tsitsilas A and Umina, PA. Synthetic pesticides in agro-ecosystems: are they as detrimental to nontarget invertebrate fauna as we suspect? Journal of Economic Entomology 106 (2): 756-775.

    Kriesner P, Hoffmann AA, Lee SF, Turelli M and Weeks AR. Rapid spread of two Wolbachia variants in Drosophila simulans. PLoS Pathogens 9: e1003607.

    Miller AD, Good RT, Coleman RA, Lancaster ML and Weeks AR. Microsatellite loci and the complete mitochondrial DNA sequence characterised through next generation sequencing and de novo genome assembly for the critically endangered orange-bellied parrot, Neophema chrysogaster. Molecular Biology Reports 40: 35-42.

    Miller AD, van Rooyen A, Sweeney OF, Whiterod NS and Weeks AR. The development of 10 polymorphic microsatellite markers through next generation sequencing and a preliminary population genetic analysis for the endangered Glenelg spiny crayfish, Euastacus bispinosus. Molecular Biology Reports 40: 4415-4419.

    Olanratmanee P, Kittayapong P, Chansang C, Hoffmann AA, Weeks AR and Endersby NM. Population genetic structure of Aedes (Stegomyia) aegypti (L.) at a micro-spatial scale in Thailand: implications for a dengue suppression strategy. PLOS Neglected Tropical Diseases 7: e1913.

    Miller KA, Webb JA, de Little SC and Stewardson MJ. Environmental flows can reduce the encroachment of terrestrial vegetation into river channels: a systematic literature review. Environmental Management 52(5): 1202-1212.

    Webb JA, Miller KA, King EL, de Little SC, Stewardson MJ, Zimmerman JKH and Poff NL. Squeezing the most out of existing literature: a systematic re-analysis of published evidence on ecological responses to altered flows. Freshwater Biology 58(12): 2439-2451.

    Traill LW, Wanger TC, de Little SC, Brook BW. Rainfall and temperature variation does not explain arid species diversity in outback Australia. Research and Reports in Biodiversity Studies 2013(3): 1-8.

    Weeks AR, van Rooyen A, Mitrovski P, Heinze D, Winnard A, Miller AD. A species in decline: genetic diversity and conservation of the Victorian eastern barred bandicoot, Perameles gunnii. Conservation Genetics 14: 1243-1254.


    Cummings V, Hewitt J, van Rooyen A, Currie K, Beard S, Thrush S, Norkko J, Barr N, Heath P, Halliday J, Sedcole R, Gomez A, McGraw C and Metcalf V. Ocean Acidification at High Latitudes: Potential Effects on Functioning of the Antarctic Bivalve Laternula elliptica. PLoS ONE 6(1):e16069.

    Furlan E, Stoklosa J, Griffiths J, Gust N, Ellis R, Huggins RM and Weeks AR. Small population size and extremely low levels of genetic diversity in island populations of the platypus, Ornithorhynchus anatinus. Ecology and Evolution 2: 844-857.

    Hill MP, Elith J, Macfadyen S, Umina PA and Hoffmann AA. Understanding niche shifts: using current and historical data to model the invasive redlegged earth mite, Halotydeus destructor. Diversity and Distributions 18: 191-203.

    Hill MP, Hoffmann AA, McColl SA and Umina PA. Distribution of cryptic blue oat mite species (Penthaleus spp.) in Australia: current and future climate conditions. Agricultural and Forest Entomology 14: 127-137.

    Lee SF, White VL, Weeks AR, Hoffmann AA, Endersby NM. 2012. High-throughput PCR assays to monitor Wolbachia infection in the dengue mosquito (Aedes aegypti) and Drosophila simulans. Applied and Environmental Microbiology 78: 4740-4743.

    Miller AD, Umina PA, Weeks AR and Hoffmann AA. Population Genetics of the Wheat Curl Mite (Aceria tosichella Keifer) in Australia - Implications for the Management of Wheat Pathogens. Bulletin of Entomological Research 102: 199-212.

    Miller AD, van Rooyen A, Ayres RM, Raadik TA, Fairbrother P, Weeks AR. The development of 24 polymorphic microsatellite loci for the endangered barred galaxias, Galaxias fuscus, through next generation DNA sequencing. Conservation Genetic Resources 4: 613-616.

    Miller KA, Webb JA, de Little SC and Stewardson MJ. Will environmental flows increase the abundance of native riparian vegetation on lowland rivers? A systematic review protocol. Environmental Evidence 1:14.

    de Little SC, Williamson G, Bowman DMJS, Whelan PI, Brook BW and Bradshaw CJA. Aerial larvicides are more effective than habitat modification for controlling disease-carrying Aedes vigilax mosquitoes. Pest Management Science 68(5): 709-717.

    Webb JA, de Little SC, Miller KA and Stewardson MJ. Eco Evidence Database: a distributed modelling resource for systematic literature analysis in environmental science and management. In Seppelt R, Voinov AA, Lange S, and Bankamp D (eds) 2012 International Congress on Environmental Modelling and Software, International Environmental Modelling and Software Society (iEMSs) 1135-1142.

    Umina PA, Weeks AR, Roberts J, Jenkins S, Mangano P, Lord A and Micic S. The current status of pesticide resistance in Australian populations of the redlegged earth mite (Halotydeus destructor). Pest Management Science 68: 889-896.

    van Heerwaarden B, Lee RFH, Wegener B, Weeks AR and Sgro CM. Complex patterns of local adaptation in heat tolerance in Drosophila simulans from eastern Australia. Journal of Evolutionary Biology 25: 1765-1778.


    Arthur AL, Miller AD and Weeks AR. Genetic markers indicate a new species complex of emerging pest mites in Australian grains. Annals of the Entomological Society of America 104: 402-415.

    Arthur AL, Weeks AR, Hill MP and Hoffmann AA. The distribution, abundance and life cycle of the pest mites Balaustium medicagoense (Prostigmata: Erythraeidae) and Bryobia spp. (Prostigmata: Tetranychidae) in Australia. Australian Journal of Entomology 50: 22-36.

    Endersby NM, Hoffmann AA, White VL, Ritchie SA, Johnson PH and Weeks AR. Changes in the genetic structure of Aedes aegypti (Diptera: Culicidae) populations in Queensland, Australia, across two seasons: implications for potential mosquito releases. Journal of Medical Entomology 48: 999-1007.

    Furlan E, Griffiths J, Gust N, Armistead R, Mitrovski P, Handasyde KA, Serena M, Hoffmann AA and Weeks AR. Is body size variation in the platypus, Ornithorhynchus anatinus, associated with environmental variables? Australian Journal of Zoology 59: 201-215.

    Geraghty DP, Griffiths J, Stewart N, Robertson IK and Gust N. Hematologic, plasma biochemical, and other indicators of the health of Tasmanian platypuses (Ornithorhynchus anatinus): predictors of mucormycosis. Journal of Wildlife Diseases 47: 483-493.

    Gust N and Griffiths J. Platypus (Ornithorhynchus anatinus) body size, condition and population structure in Tasmanian river catchments: variability and potential mucormycosis impacts. Wildlife Research 38: 271-289.

    Heng Lin HL, Mee P, Walker T, Weeks AR, O’Neill SL, Johnson P, Ritchie SA, Richardson KM, Doig C, Endersby NM and Hoffmann AA. Dynamics of the ‘popcorn’ infection in Aedes aegypti in an outbred background. Genetics 187: 583-U346.

    McColl SA, Khan M and Umina PA. Review of the biology and control of Creontiades dilutus (Stal) (Hemiptera: Miridae). Australian Journal of Entomology 50: 107-117.

    Roberts JMK, Weeks AR, Hoffmann AA and Umina P. Does Bdellodes lapidaria (Acari: Bdellidae) have a role in biological control of the springtail pest, Sminthurus viridis (Collembola: Sminthuridae) in south-eastern Australia? Biological Control 58: 222-229.

    Roberts JMK, Umina PA, Hoffmann AA and Weeks AR. Population dynamics and diapause response of the springtail pest, Sminthurus viridis (Collembola: Sminthuridae), in south-eastern Australia. Journal of Economic Entomology 104: 465-473.

    Roberts JMK and Weeks AR. Genetic structure and long distance dispersal in populations of the wingless pest springtail, Sminthurus viridis (Collembola: Sminthuridae). Genetics Research 93: 1-12.

    Tsitsilas A, Hoffmann AA, Weeks AR and Umina PA. Impact of groundcover manipulations within windbreaks on mite pests and their natural enemies. Australian Journal of Entomology 50: 37-47.

    Ward MJ, Ruykys L, van Weene J, de Little SC, Dent A, Clarke A, Partridge T. Status of warru (Petrogale lateralis MacDonnell Ranges race) in the Anangu Pitjantjatjara Yankunytjatjara Lands of South Australia: 2. Population dynamics. Australian Mammalogy 33(2): 142-151.

    Weeks AR, Sgro CM, Young AG, Frankham R, Mitchell NJ, Miller KA, Byrne M, Coates DJ, Eldridge MDB, Sunnucks P, Breed MF, James EA and Hoffmann AA. Assessing the benefits and risks of translocations in changing environments: a genetic perspective. Evolutionary Applications 4: 709-725.


    Arthur AL, Weeks AR, Umina PA and Hoffmann AA. Survival and reproduction of the pest mites Balaustium medicagoense and Bryobia spp. on winter grain crops. Experimental and Applied Acarology 52: 141-153.

    Bowman DMJS, Prior LD, de Little SC. Retreating Melaleuca swamp forests in Kakadu National Park: evidence of synergistic effects of climate change and past feral buffalo impacts. Austral Ecology 35(8): 898-90.

    Carrington LB, Hoffmann AA and Weeks AR. Monitoring long-term evolutionary changes following Wolbachia introduction into a novel host: the Wolbachia popcorn infection in Drosophila simulans. Proceedings of the Royal Society of London series B: Biological Sciences 277: 2059-2068.

    Danne A, Thomson LJ, Sharley DJ, Penfold CM and Hoffmann AA. Effects of native grass cover crops on beneficial and pest invertebrates in Australian vineyards. Environmental Entomology 39(3): 970-978.

    Einoder LD, Page B, Goldsworthy SD, de Little SC, Bradshaw CJA. Exploitation of distant Antarctic waters and close neritic waters by short-tailed shearwaters breeding in South Australia. Austral Ecology 36(4): 46-475.

    Furlan E, Umina PA, Mitrovski PJ, Gust N, Griffiths J and Weeks AR. High levels of genetic divergence between Tasmanian and Victorian platypuses, Ornithorhynchus anatinus, as revealed by microsatellite loci. Conservation Genetics 11: 319-323.

    Herbert KS, Umina PA, Mitrovski PJ, Powell KS, Viduka K and Hoffmann AA. Clone lineages of grape phylloxera differ in their performance on Vitis Vinifera. Bulletin of Entomological Research 100: 671-678.

    McKechnie SW, Blacket MJ, Song SV, Rako L, Carroll X, Johnson TK, Jensen LT, Lee SF, Wee CW, Hoffmann AA. A clinally varying promoter polymorphism associated with adaptive variation in wing size in Drosophila. Molecular ecology 19(4): 775-84.

    Umina PA, Arthur AA, McColl SA, Hoffmann AA and Roberts JMK. Selective control of mite and collembolan pests of pastures and grain crops in Australia. Crop Protection 29: 190-196.

    Valenzuala I, Ridland PM, Weeks AR and Hoffmann AA. Patterns of genetic variation and host adaptation in an invasive population of the bird cherry-oat aphid, Rhopalosiphum padi (L.). Annals of the Entomological Society of America 103: 886-897.

    Weeks AR, Endersby NM, Lange CL, Lowe A, Zalucki MP and Hoffmann A A. Genetic variation among Helicoverpa armigera populations as assessed by microsatellites: a cautionary tale about accurate allele scoring. Bulletin of Entomological Research 100: 445-450.


    Carew M, Schiffer M, Umina PA, Weeks A and Hoffmann A. Molecular markers indicate that the wheat curl mite Aceria tosichella Keifer may represent a species complex in Australia. Bulletin of Entomological Research 99: 479-486.

    Carrington L, Weeks AR and Hoffmann AA. The popcorn Wolbachia infection of Drosophila melanogaster: can selection alter Wolbachia longevity effects? Evolution 63: 2648-2657.

    Endersby NM, Hoffmann AA, White VL, Lowenstein S, Ritchie S, Johnson PH, Rapley LP, Ryan PA, Nam VS, Yen NT, Kittiyapong P and Weeks AR. Genetic structure of Aedes aegypti in Australia and Vietnam revealed by microsatellite and EPIC markers suggests feasibility of local control options. Journal of Medical Entomology 46: 1074-1083.

    Gust N and Griffiths J. Platypus mucormycosis and its conservation implications. Australasian Mycologist 28:1-8

    Gust N, Griffiths J, Driessen M, Phillips A, Stewart N and Geraghty D. Distribution, prevalence and persistence of mucormycosis in Tasmanian platypuses (Ornithorhynchus anatinus). Australian Journal of Zoology 57: 245-254.

    de Little SC, Bowman DMJS, Whelan PI, Brook BW and Bradshaw CJA. Quantifying the drivers of larval density patterns in two tropical mosquito species to maximise control efficiency Environmental Entomology 38(4): 1013-1021.

    Roberts JMK, Umina PA, Hoffmann AA and Weeks AR. The tolerance of the lucerne flea, Sminthurus viridis, to currently registered pesticides in Australia. Australian Journal of Entomology 48: 241-246.

    Schiffer M, Umina PA, Carew M and Hoffmann AA, Rodoni B and Miller A. The distribution of wheat curl mite (Aceria tosichella) lineages in Australia and their potential to transmit wheat streak mosaic virus. Annals of Applied Biology 155: 371-379.

    Valenzuela I, Eastop VF, Ridland PM and Weeks AR. Molecular and morphometric data indicate a new species of the aphid genus Rhopalosiphum Koch (Hemiptera: Aphididae). Annals of the Enotmological Society of America 102: 914-924.


    Arthur AL, Weeks AR and Sgro CM. Investigating latitudinal clines for life history and stress resistance traits in Drosophila simulans from eastern Australia. Journal of Evolutionary Biology 21: 1470-1479.

    Arthur AL, Hoffmann AA, Umina PA and Weeks AR. Tolerance of emerging pests of grains, Balaustium medicagoense and Bryobia spp., to currently registered pesticides. Australian Journal of Experimental Agriculture 48: 1126-1132.

    Collinge JE, Anderson AR, Weeks AR, Johnson TK and McKechnie SW. Latitudinal and cold-tolerance variation associate with DNA repeat-number variation in the hsr-omega RNA gene of Drosophila melanogaster. Heredity 101: 260-270.

    Gower J, Hoffmann AA and Weeks AR. Effectiveness of spring spraying targeting diapause egg production for controlling redlegged earth mites and other pests in pasture.  Australian Journal of Experimental Agriculture 48: 1118-1125.

    Hoffmann AA, Reynolds KT, Nash M and Weeks AR. A high incidence of parthenogenesis in agricultural pests. Proceedings of the Royal Society of London series B: Biological Sciences 275: 2473-2481.

    Hoffmann AA, Weeks AR, Nash M, Mangano GP and Umina P. The changing status of invertebrate pests and the future of pest management in the grains industry. Australian Journal of Experimental Agriculture 48: 1481-1493.

    McMahon CR, Field IC, Hindell MA, de Little SC and Bradshaw CJA. Guarding against oversimplifying the fundamental drivers of southern elephant seal population dynamics. Journal of Biogeography 35(9): 1738-1740

    Micic S, Strickland G, Weeks A, Hoffmann A, Nash M, Henry K. Bellato J, and Umina P. Pests of establishing crops in southern Australia: a review of their biology and management options. Australian Journal of Experimental Agriculture 48: 1560-1573.

    Mitrovski P, Hoffmann AA, Heinze DA and Weeks AR. Rapid loss of genetic variation in an endangered possum. Biology Letters 4: 134-138.

    Paoletti MG, Tsitsilas A, Thomson LJ, Taiti S and Umina PA. The flood bug, Australiodillo bifrons (Isopoda: Armadillidiidae): a potential pest of cereals in Australia? Applied Soil Ecology 39: 76-83.

    Ridsdill-Smith J, Hoffmann A, Mangano P, Gower JM, Pavri C and Umina P. Review of strategies for control of the redlegged earth mite in Australia. Australian Journal of Experimental Agriculture 48: 1506-1513.

    Weeks AR and Hoffmann AA. Frequency dependent selection maintains clonal diversity in an asexual organism. Proceedings of the National Academy of Sciences USA 105: 17872-17877.


    Beaulieu F and Weeks AR. Free-living mesostigmatic mites in Australia: their role in biological control and bioindication.  Australian Journal of Experimental Agriculture 47: 460-478.

    Endersby N, Hoffmann AA, McKechnie SW and Weeks AR. Is there genetic structure in populations of Helicoverpa armigera from Australia? Entomologia Experimentalis et Applicata 122: 253-263.

    Hoffmann AA and Weeks AR. Climatic selection on genes and traits after a 100 year-old invasion: a critical look at the temperate-tropical clines in Drosophila melanogaster from eastern Australia. Genetica 129: 133-147 

    Hoffmann AA, Ratna E, Sgrò CM, Barton M, Blacket M, Hallas R, De Garis S and Weeks AR. Antagonistic selection between adult thorax and wing size in field released Drosophila melanogaster independent of thermal conditions. Journal of Evolutionary Biology 20: 2219-2227.

    Hopkins DC and and McDonald G. Cereals – Pests and beneficials in the field. In Pests of Field Crops and Pastures – Identification and Control. Ed. P.T Bailey (pp 5-39). CSIRO Publishing 528 pp.

    de Little SC, Bradshaw CJA, McMahon CR and Hindell MA. Complex interplay between intrinsic and extrinsic drivers of long-term survival trends in southern elephant seals. BMC Ecology 7(1):3.

    Mitrovski P, Heinze DA, Broome L, Hoffmann AA and Weeks AR. High levels of variation despite genetic fragmentation in populations of the endangered mountain pygmy possum, Burramys parvus, in alpine Australia. Molecular Ecology 16: 75-87.

    Umina PA, Corrie AM, Herbert KS, White VL, Powell KS and Hoffmann AA. The use of DNA markers for pest management: clonal lineages and population biology of grape phylloxera. Acta Horticulturae 733: 183-195.

    Umina PA. Pyrethroid resistance discovered in a major agricultural pest in southern Australia: the redlegged earth mite (Acari: Penthaleidae). Pest Management Science 63: 1185-1190.

    Valenzuela I, Hoffmann AA, Malipatil MB, Ridland PM and Weeks AR. Identification of aphid species (Hemiptera: Aphididae: Aphidinae) using a rapid PCR-RFLP method based on the cytochrome oxidase subunit I gene. Australian Journal of Entomology 46: 305-312.

    Weeks AR, McKechnie SW and Hoffmann AA.  Robust clines and robust sampling: a reply to Kyriacou et al. Journal of Evolutionary Biology 20: 1652-1654.

    Weeks AR, Turelli M, Harcombe WR, Reynolds KT and Hoffmann AA. From parasite to mutualist: rapid evolution of Wolbachia in populations of Drosophila. PLOS Biology 5(5): 997-1005


    Endersby NM, McKechnie SW, Ridland PM and Weeks AR. Microsatellites reveal a lack of structure in Australian populations of the diamond back moth, Plutella xylostella (L.). Molecular Ecology 15: 107-118.

    Tsitsilas A, Stuckey S, Hoffmann AA, Weeks AR and Thomson LJ. Shelterbelt understorey characteristics have a direct impact on beneficial organisms and pests in adjacent pasture. Australian Journal of Experimental Agriculture 46: 1379-1388.

    Umina PA, Weeks AR, Hoffmann AA and McKechnie SW. An independent non-linear latitudinal cline for the sn-glycerol-3-phosphate (a-Gpdh) polymorphism of Drosophila melanogaster from eastern Australia. Genetical Research 87: 13-21.

    Weeks AR, McKechnie SW and Hoffmann AA. In search of clinal variation in the period and clock timing genes in Australian Drosophila melanogaster populations.  Journal of Evolutionary Biology 19: 551-557.


    Anderson AR, Hoffmann AA, McKechnie SW, Umina PA and Weeks AR. The latitudinal cline in the In(3R)Payne inversion polymorphism has shifted in the last 20 years in Australian Drosophila melanogaster populations. Molecular Ecology 14: 851-858.

    Endersby NM, McKechnie SW, Vogel H, Gahan LJ, Baxter SW, Ridland PM and Weeks AR. Microsatellites isolated from diamondback moth, Plutella xylostella (L.), for studies of dispersal in Australian populations.  Molecular Ecology Notes 5: 51-53.

    Mitrovski P, Heinze DA, Guthridge K and Weeks AR. Isolation and characterisation of microsatellite loci from the Australian endemic Mountain pygmy-possum, Burramys parvus Broom. Molecular Ecology Notes 5: 395-397.

    Provencher LM, Morse GM, Weeks AR and Normark BB. Parthenogenesis in the Aspidiotus nerii complex (Hemiptera: Diaspididae): a single origin of a worldwide, polyphagous lineage associated with Cardinium bacteria. Annals of the Entomological Society of America 98: 629-635.

    Rugman-Jones PF, Weeks AR, Hoddle MS and Stouthamer R. Isolation and characterization of microsatellite loci in the avocado thrips Scirtothrips perseae (Thysanoptera: Thripidae).  Molecular Ecology Notes 5: 644-646.

    Umina PA and Hoffmann AA. Competitive Interactions Among Four Pest Species of Earth Mites (Acari: Penthaleidae). Journal of Economic Entomology 98: 307-316.

    Umina PA, Weeks AR, Kearney MR, McKechnie SW and Hoffmann AA. A Rapid Shift in a Classic Clinal Pattern in Drosophila Reflecting Climate Change. Science 308: 691-693.


    Hoffmann AA, Sgro CM and Weeks AR. Chromosomal inversion polymorphisms and adaptation. Trends in Ecology and Evolution 19: 482-488.

    Umina PA and Hoffmann AA. Plant host associations of Penthaleus species and Halotydeus destructor (Acari: Penthaleidae) and implications for integrated pest management. Experimental and Applied Acarology 33: 1-20.

    Umina PA, Hoffmann AA and Weeks AR. Biology, ecology and control of the Penthaleus species complex (Acari: Penthaleidae). Experimental and Applied Acarology 34: 211-237.

    Weeks AR and Stouthamer R. Increased fecundity associated with infection by a Cytophaga-like intracellular bacterium in the predatory mite, Metaseiulus occidentalisProceedings of the Royal Society of London - Series B. Biological Sciences (Suppl.) 271: S193-S195.


    Umina PA and Hoffmann AA. Diapause and implications for control of Penthaleus species and Halotydeus destructor (Acari: Penthaleidae) in southeastern Australia. Experimental and Applied Acarology 31: 209-223.

    Weeks AR and Breeuwer JAJ.  A new bacterium from the Cytophaga-Flavobacterium-Bacteroides phylum that causes sex ratio distortion. In Insect Symbiosis. (ed. K. Bourtzis and T. Miller).  CRC Press Boca Raton, Florida, USA.

    Weeks AR, Velten R and Stouthamer R.  Incidence of a new sex-ratio-distorting endosymbiotic bacterium among arthropods. Proceedings of the Royal Society of London - Series B. Biological Sciences 270: 1857-1865.


    Kellow AV, McDonald G, Corrie AM and van Heeswijck R. In vitro assessment of grapevine resistance to two populations of phylloxera from Australian vineyards. Australian Journal of grape and wine research 8: 109-116.

    Robinson MT, Weeks AR and Hoffmann AA. Geographic patterns of clonal diversity in the earth mite species, Penthaleus major, with particular emphasis on species margins. Evolution 56: 1160-1167.

    Vala F, Weeks AR, Breeuwer JAJ and Sabelis MW. Within- and between-population variation for Wolbachia-induced reproductive incompatibility in a haplodiploid mite. Evolution 56: 1331-1339.

    Weeks AR, McKechnie SW and Hoffmann AA.  Dissecting adaptive clinal variation: markers, inversions and size/stress associations in Drosophila melanogaster from a central field population. Ecology Letters 5: 756-763.

    Weeks AR, Reynolds KT and Hoffmann AA. Wolbachia dynamics and host effects: was has (and has not) been demonstrated? Trends in Ecology and Evolution 17: 257-262.


    Weeks AR, Marec F and Breeuwer JAJ.  A mite species that consists entirely of haploid females. Science 292: 2479-2482.

    Weeks AR and Breeuwer JAJ. Wolbachia induced parthenogenesis in a genus of phytophagous mites. Proceedings of the Royal Society of London – Series B. Biological Sciences 268: 2245-2251.


    Weeks AR and Hoffmann AA.  Competitive interactions between two pest species of earth mites, Halotydeus destructor and Penthaleus major (Acarina: Penthaleidae). Journal of Economic Entomology 93: 1183-1191.

    Weeks AR, Turelli M and Hoffmann AA. Dispersal patterns of pest earth mites in pastures and crops.  Journal of Economic Entomology 93: 1415-1423.

    Weeks AR, van Opijnen T and Breeuwer JAJ. AFLPs and mites: applications for assessing intraspecific variation and genome mapping. Experimental and Applied Acarology 24: 775-793.