Stephen Simpson

Stephen Simpson obtained his undergraduate degree from the University of Queensland, majorizing in entomology, before undertaking his Ph.D. degree at the University of London. He then moved to the Department of Experimental Psychology at the University of Oxford, before moving to the Zoology Department at Oxford. He began a project to explore nutrient balancing in insects—a project which has continued ever since and which has resulted in a set of nutritional models that are currently being applied to many other animals, including humans. In 1986, Simpson was appointed as a University Lecturer in zoology and Curator of entomology at the University Museum of Natural History, University of Oxford, then in 1998 as a Professor of the Hope Entomological Collections, University of Oxford. During the early 1990s, he established a research program on swarming in locusts, which continues to this day. He has been a Guest Professor of insect behavior at the University of Basel (1990), a Distinguished Visiting Professor at the University of Arizona (1999), a Fellow of the Institute of Advanced Study, Berlin (2002–2003), and is currently an ARC Federation Fellow and Professor at the School of Biological Sciences at the University of Sydney, as well as a Visiting Professor at the University of Oxford. He was elected as a Fellow of the Australian Academy of Science in 2007.

Biography Updated on 21 April 2008

Personal Home Page

http://www.bio.usyd.edu.au/staff/simpson/simpson.htm

Articles in Scholarly Journals [Incomplete List]

  1. Maternal effects on phase characteristics in the desert locust, Schistocerca gregaria: A review of current understanding
    Journal of Insect Physiology, vol. 53, no. 9, pp. 869–876, 2007
  2. A new approach to diet optimisation: A re-analysis using European whitefish (Coregonus lavaretus)
    Aquaculture, vol. 267, no. 1-4, pp. 147–156, 2007
  3. Nutrient regulation in relation to diet breadth: a comparison of Heliothis sister species and a hybrid
    Journal of Experimental Biology, vol. 209, no. 11, pp. 2076–2084, 2006
  4. Evolving resistance to obesity in an insect
    Proceedings of the National Academy of Sciences, vol. 103, no. 38, pp. 14045–14049, 2006
  5. Resource distribution mediates synchronization of physiological rhythms in locust groups
    Proceedings of the Royal Society B: Biological Sciences, vol. 273, no. 1593, pp. 1517–1522, 2006
  6. Cannibal crickets on a forced march for protein and salt
    Proceedings of the National Academy of Sciences, vol. 103, no. 11, pp. 4152–4156, 2006
  7. Nutrient-Specific Foraging in Invertebrate Predators
    Science, vol. 307, no. 5706, pp. 111–113, 2005
  8. Food choices of solitarious and gregarious locusts reflect cryptic and aposematic antipredator strategies
    Animal Behaviour, vol. 69, no. 2, pp. 471–479, 2005
  9. Stimuli inducing gregarious colouration and behaviour in nymphs of
    Journal of Insect Physiology, vol. 51, no. 7, pp. 737–747, 2005
  10. Surviving the change to warning colouration: density-dependent polyphenism suggests a route for the evolution of aposematism
    Chemoecology, vol. 15, no. 2, pp. 69–75, 2005
  11. Behavioural correlates of phenotypic plasticity in mouthpart chemoreceptor numbers in locusts
    Journal of Insect Physiology, vol. 50, no. 8, pp. 725–736, 2004
  12. Effects of crowding, isolation, and transfer from isolation to crowding on total ecdysteroid content of eggs in Schistocerca gregaria
    Journal of Insect Physiology, vol. 50, no. 7, pp. 621–628, 2004
  13. Optimal foraging when regulating intake of multiple nutrients
    Animal Behaviour, vol. 68, no. 6, pp. 1299–1311, 2004
  14. A comparison of nutrient regulation between solitarious and gregarious phases of the specialist caterpillar, (Walker)
    Journal of Insect Physiology, vol. 50, no. 12, pp. 1171–1180, 2004
  15. Landscape structure and locust swarming: a satellite's eye view
    Ecography, vol. 27, no. 3, pp. 381–391, 2004
  16. Dietary influences over proliferating cell nuclear antigen expression in the locust midgut
    Journal of Experimental Biology, vol. 207, no. 13, pp. 2255–2265, 2004
  17. Substantial changes in central nervous system neurotransmitters and neuromodulators accompany phase change in the locust
    Journal of Experimental Biology, vol. 207, no. 20, pp. 3603–3617, 2004
  18. The effects of nutritional imbalance on compensatory feeding for cellulose-mediated dietary dilution in a generalist caterpillar
    Physiological Entomology, vol. 29, no. 2, pp. 108–117, 2004
  19. ORGANISMAL STOICHIOMETRY: QUANTIFYING NON-INDEPENDENCE AMONG FOOD COMPONENTS
    Ecology, vol. 85, no. 5, p. 1203, 2004
  20. Density-dependent accumulation of phase characteristics in a natural population of the desert locust Schistocerca gregaria
    Physiological Entomology, vol. 28, no. 1, pp. 25–31, 2003
  21. Nutrient balancing in grasshoppers: behavioural and physiological correlates of dietary breadth
    Journal of Experimental Biology, vol. 206, no. 10, pp. 1669–1681, 2003
  22. Behavioural differences in Locusta migratoria associated with albinism and their relation to [His7]-corazonin
    Physiological Entomology, vol. 28, no. 1, pp. 32–38, 2003
  23. Mechanosensory-induced behavioural gregarization in the desert locust Schistocerca gregaria
    Journal of Experimental Biology, vol. 206, no. 22, pp. 3991–4002, 2003
  24. The feeding behavior of the weevil, Exophthalmus jekelianus, with respect to the nutrients and allelochemicals in host plant leaves
    Oikos, vol. 100, no. 1, pp. 172–184, 2003
  25. Geometric analysis of macronutrient intake in humans: the power of protein?
    Appetite, vol. 41, no. 2, pp. 123–140, 2003
  26. A correlation between macronutrient balancing and insect host-plant range: evidence from the specialist caterpillar Spodoptera exempta (Walker)
    Journal of Insect Physiology, vol. 49, no. 12, pp. 1161–1171, 2003
  27. Food distance and its effect on nutrient balancing in a mobile insect herbivore
    Animal Behaviour, vol. 66, no. 4, pp. 665–675, 2003
  28. Entomologia Experimentalis et Applicata, vol. 103, no. 3, pp. 227–237, 2002
  29. A geometric analysis of nutrient regulation in the generalist caterpillar Spodoptera littoralis (Boisduval)
    Journal of Insect Physiology, vol. 48, no. 6, pp. 655–665, 2002
  30. A comparison of phase-related shifts in behavior and morphometrics of an albino strain, deficient in [His7]-corazonin, and a normally colored Locusta migratoria strain
    Journal of Insect Physiology, vol. 48, no. 8, pp. 791–801, 2002
  31. Coping with crowds: Density-dependent disease resistance in desert locusts
    Proceedings of the National Academy of Sciences, vol. 99, no. 8, pp. 5471–5475, 2002
  32. Gregarious behavior in desert locusts is evoked by touching their back legs
    Proceedings of the National Academy of Sciences, vol. 98, no. 7, pp. 3895–3897, 2001
  33. High resolution 1H NMR spectroscopic studies of the composition of the haemolymph of crowd- and solitary-reared nymphs of the desert locust, Schistocerca gregaria
    Insect Biochemistry and Molecular Biology, vol. 32, no. 1, pp. 51–56, 2001
  34. Frequency-dependent food selection in locusts: a geometric analysis of the role of nutrient balancing
    Animal Behaviour, vol. 61, no. 5, pp. 995–1005, 2001
  35. Is there an intraspecific role for density-dependent colour change in the desert locust?
    Animal Behaviour, vol. 59, no. 4, pp. 861–870, 2000
  36. The role of food distribution and nutritional quality in behavioural phase change in the desert locust
    Animal Behaviour, vol. 59, no. 3, pp. 643–652, 2000
  37. The influence of mechanical, visual and contact chemical stimulation on the behavioural phase state of solitarious desert locusts (Schistocerca gregaria)
    Journal of Insect Physiology, vol. 46, no. 9, pp. 1295–1301, 2000
  38. The feeding behaviour of Schistocerca gregaria , the desert locust, on two starch mutants of Arabidopsis thaliana
    Chemoecology, vol. 10, no. 2, pp. 59–67, 2000
  39. Patterns of respiration in Locusta migratoria nymphs when feeding
    Physiological Entomology, vol. 25, no. 1, pp. 88–93, 2000
  40. The role of female accessory glands in maternal inheritance of phase in the desert locust Schistocerca gregaria
    Journal of Insect Physiology, vol. 46, no. 3, pp. 275–280, 2000
  41. Density-dependent aposematism in the desert locust
    Proceedings: Biological Sciences, vol. 267, no. 1438, pp. 63–68, 2000
  42. Small-scale vegetation patterns in the parental environment influence the phase state of hatchlings of the desert locust
    Physiological Entomology, vol. 25, no. 1, pp. 74–81, 2000
  43. Assuaging nutritional complexity: a geometrical approach
    Proceedings of the Nutrition Society, vol. 58, no. 04, p. 779, 1999
  44. A behavioural analysis of phase change in the desert locust
    Biological Reviews of the Cambridge Philosophical Society, vol. 74, no. 4, pp. 461–480, 1999
  45. Entomologia Experimentalis et Applicata, vol. 91, no. 1, pp. 67–82, 1999
  46. Entomologia Experimentalis et Applicata, vol. 91, no. 1, pp. 19–28, 1999
  47. The effect of strepsipteran parasitism on a tettigoniid pest of oil palm in Papua New Guinea
    Physiological Entomology, vol. 23, no. 4, pp. 388–398, 1998
  48. Strepsiptera parasites- novel biocontrol tools for oil palm integrated pest management in Papua New Guinea
    International Journal of Pest Management, vol. 44, no. 3, pp. 127–133, 1998
  49. Spatial scales of desert locust gregarization
    Proceedings of the National Academy of Sciences, vol. 95, no. 22, pp. 13052–13055, 1998
  50. Effects of sensory stimuli on the behavioural phase state of the desert locust, Schistocerca gregaria
    Journal of Insect Physiology, vol. 44, no. 10, pp. 883–893, 1998
  51. Integrative models of nutrient balancing: Application to insects and vertebrates
    Nutrition Research Reviews, vol. 10, no. 1, pp. 151–179, 1997
  52. The functional significance of switching interval in food mixing by .
    Journal of Insect Physiology, vol. 44, no. 1, pp. 77–85, 1997
  53. Haemolymph amino acid and sugar levels in locusts fed nutritionally unbalanced diets
    Journal of Comparative Physiology B, vol. 166, no. 3, pp. 223–229, 1996
  54. Meeting nutrient requirements: the roles of power and efficiency
    Entomologia Experimentalis et Applicata, vol. 80, no. 1, pp. 65–68, 1996
  55. Feeding behaviour, sensory physiology and nutrient feedback: a unifying model
    Entomologia Experimentalis et Applicata, vol. 80, no. 1, pp. 55–64, 1996
  56. Constructing nutrient budgets
    Entomologia Experimentalis et Applicata, vol. 77, no. 1, pp. 99–104, 1995
  57. Response of the pea aphid (Acyrthosiphon pisum) to variation in dietary levels of sugar and amino acids: the significance of amino acid quality
    Journal of Insect Physiology, vol. 41, no. 1, pp. 71–75, 1995
  58. Behavioural mechanisms of nutrient balancing in Locusta migratoria nymphs
    Animal Behaviour, vol. 50, no. 6, pp. 1513–1523, 1995
  59. The geometric analysis of feeding and nutrition: a user's guide
    Journal of Insect Physiology, vol. 41, no. 7, pp. 545–553, 1995
  60. Experimental support for a model in which innate taste responses contribute to regulation of salt intake by nymphs of Locusta migratoria
    Journal of Insect Physiology, vol. 40, no. 7, pp. 555–559, 1994
  61. Parental effects on the behaviour and colouration of nymphs of the desert locust Schistocerca gregaria
    Journal of Insect Physiology, vol. 40, no. 2, pp. 173–181, 1994
  62. Selective egestion of lysine by locusts fed nutritionally unbalanced foods
    Journal of Insect Physiology, vol. 40, no. 3, pp. 259–265, 1994
  63. The Analysis of Nutrient Budgets
    Functional Ecology, vol. 8, no. 6, p. 783, 1994
  64. A Multi-Level Analysis of Feeding Behaviour: The Geometry of Nutritional Decisions
    Philosophical Transactions of the Royal Society B: Biological Sciences, vol. 342, no. 1302, pp. 381–402, 1993
  65. Analysis of Phase-Related Changes in Behaviour of Desert Locust Nymphs
    Proceedings of the Royal Society B: Biological Sciences, vol. 252, no. 1333, pp. 43–49, 1993
  66. ?-Cyclopentadienyl molybdenum imido compounds; halo, alkene, alkyne, allyl and tertiary phosphine derivatives
    Journal of the Chemical Society, Chemical Communications, no. 3, p. 256, 1992
  67. Synthesis and molecular structures of the sandwich anion [K(18-crown-6)][Nb(?-C7H7)(?-C5H5)] and cation [Nb(?-C7H7)(?-C5H4Me)(thf)]PF6
    Journal of the Chemical Society, Chemical Communications, no. 4, p. 314, 1992
  68. Molecular hydrogen complexes: the effect of steric factors on the protonation of the monohydrides [(?5-C5H5)Ru(Ph2P(CH2) n PPh2)H](n= 1?3)
    Journal of the Chemical Society, Chemical Communications, no. 21, p. 1675, 1987
  69. [(?5-C5H5)Ru(PPh3)(CNBut)(?-2-H2)]PF6: a cationic molecular hydrogen complex from protonation of a monohydride precursor
    Journal of the Chemical Society, Chemical Communications, no. 7, p. 506, 1986
  70. The rate and activation parameters for the cleavage of the metal?metal bond of the anion radical of a di-iron carbonyl complex.
    Journal of the Chemical Society, Chemical Communications, no. 6, p. 352, 1984
  71. (?5-C5H5)Ru(PPh3)H3: a stable ruthenium (IV) trihydride
    Journal of the Chemical Society, Chemical Communications, no. 22, p. 1278, 1983
  72. Disproportionation of the iron carbonyl hydride (?5-C5H5) Fe(CO) H (Ph2PCH2CH2PPh2) to the iron methyl (?5-C5H5) Fe(Ph2PCH2CH2PPh2) Me
    Journal of the Chemical Society, Chemical Communications, no. 24, p. 1404, 1982