Dr. J.A. Harvey

Dr. Jeff Harvey


Contact information

E: j.harvey@nioo.knaw.nl
T: +31 317 473 621


  • Life history strategies in parasitoids and hyperparasitoids
  • Plant-herbivore-parasitoid interactions
  • Community ecology; Science and advocacy

Visiting address

Droevendaalsesteeg 10
6708 PB Wageningen
T +31-317-473400
The Netherlands

Postal address

P.O. Box 50
6700 AB Wageningen
The Netherlands


General information:

  • Date of birth: 28-12-57
  • Place of birth: Toronto, Canada

Educational/employment Background

  • BSc: (Honours, 1st class, Zoology), Liverpool University, 1991
  • PhD: (Nutritional Ecology of a host-parasitoid interaction), Liverpool University 1995


  • 1995-1995: Post doctoral research fellow (Keele University, UK)
  • 1995-1997: Royal Society post doctoral research fellow (Wageningen University, The Netherlands)
  • 1997-1999: Post doctoral research (University of Wisconsin-Madison, USA)
  • 1999-1999: Associate Editor, Nature, London
  • 2000-present: Senior Scientist, Netherlands Institute of Ecology

Main research interests

(1) Intra-interspecific variation in plant quality and its effects on herbivores, parasitoids and hyperparasitoids; linking above- and below ground multitrophic interactions via plant defense.
Related plant species with different spatial and/or temporal life-history characteristics often possess differences in secondary chemistry and thus direct defensive capability. These differences are often attributed to a range of divergent selection pressures from herbivores and pathogens. Most studies of insect-plant interactions have examined the effects of plant defence on herbivore performance, with less attention being paid to higher trophic levels, such as parasitoid wasps. Ultimately, the net effect of secondary plant compounds on plant fitness depends on how each trophic level separately responds to them. Many parasitoids (in the third trophic level) are attacked by one or more species of obligate hyperparasitoids (in the fourth trophic level) which may in turn be attacked by facultative (or tertiary) hyperparasitoids. Most importantly, the dynamics of tri-trophic interactions involving plants, herbivores and parasitoids may be profoundly affected by hyperparasitoids. They may exert a significant negative effect on plant-fitness by removing parasitoids or predators of the herbivores, (top-down regulation) or else plant allelochemicals may be transferred vertically through herbivores feeding on plants to the third trophic level and perhaps higher (bottom-up regulation). At present this research explores interactions between (a) wild cruciferous plants (Brassicaceae), insect herbivores, parasitoids and hyperparasitoids.  Crucifers produce inducible glycoside toxins known as glucosinolates. Although glucosinolates are known to be synthesized by plants in several plant families, they are best studied in the family Brassicaceae. Glucosinolates and their breakdown products play a role in mediating plant-phytophage interactions. For example, they have been shown to act as feeding deterrents or to exhibit detrimental effects on the growth and development of herbivores, pathogens and nematodes. Alternatively, they are known to act as oviposition and feeding stimulants for specialist herbivores. Current research (with R. Gols, Wageningen University, Nicole van am, NIOO, J. Bullock, UK) is examining  development and plant selection in several generalist and specialist herbivores and their endoparasitoids on wild and cultivated populations of Brassica nigra and Brassica oleracea.  Moreover, PhD student (R. Soler), is also investigating indirect interactions between above- and below ground herbivores as mediated by differential effects of herbivory on primary and secondary chemistry in the two Brassica species. 

Collaborations: Nicole van Dam (NIOO), Martijn Bezemer (NIOO and Wageningen University), Arjen Biere (NIOO), Rieta Gols (Wageningen Uniersity), James Bullock (Institute of Ecology and Hydrology, Dorset, UK), Karen Kester (Virginia Commonwealth University, USA) Pedro Barbosa (University of Maryland, USA), Anne-Marie Cortesero (University of Rennes, France).

(2) Life-history, foraging and developmental strategies in hyperparasitoids.
Hyperparasitoids are a fascinating group of insects that attack primary parasitoid hosts. Hyperparasitoids may be primary (e.g. they attack their hosts as larvae within a secondary host, usually a herbivore) or secondary (e.g they attack the primary parasitoid host after it has emerged from the secondary host). With the exception of hyperparasitoids of aphidiine braconds, very little is known about the biology and ecology of most hyperparasitoids. Virtually nothing is known (beyond some basic taxonomic information) of the hyperparasitoid complex of even well-studied tritrophic systems, such as the crucifer-Pieris-Cotesia interaction.  At present I am examining lifetime reproductive success and development of Lysibia nana and Gelis agilis, secondary ichneumonid hyperparasitoids that attack cocooned pre-pupae and pupae of several microgastrines in the genus Cotesia. Recent work has shown that differing plant quality, as mediated through the herbivore (secondary host) and parasitoid (primary host) affects developmentof both species, even though there were no effects on the host. Furthermore, Lysibia has a much higher reproductive success than many other hyperparasitoids, reflecting an adaptation to gregarious parasitoid hosts. Offspring sex ratio is highly female-biased, also reflecting selection pressures on its host (via local mate competition). By contrast, reproductive success and daily patterns of progeny allocation in Gelis are much lower. 

Collaborations: Jacques Brodeur (Laval University, Canada), Mark Jervis (University of Cardiff, UK).     

(3) Spatial and temporal effects on multitrophic interactions.
It is well established that higher trophic levels occupy only a subset of habitats occupied by lower trophic levels. Much recent attention has focussed on evaluating the effects of habitat fragmentation on multitrophic interactions, and parasitoid wasps and their hosts have been increasingly employed as model systems in this research. However, hyperparasitoids have been virtually ignored in this research, even though (as stipulated above) they may play an important role in mediating the strength of community modules. Furthermore, the 'enemies hypothesis' predicts that more complex habitats will harbour a greater number of natural enemies than simple habitats. Most tests of this hypothesis have been based on agricultrual systems, which usually exhibit considerable homogeneity compared with semi-natural self-organized environments. Using extreme ends of a continuum, I am comparing (1) levels of predation, (2) parasitism, and (3) secondary hyperparasitism in a simple habitat (mown field margin) and a complex habitat (dense stands of Brassica nigra along the River Rhein) in order to test both the 'enemies hypothesis' and to establish how parasitoids and hyperparsitoids respond to such extreme variation in the spatial structure and plant diversity of the two locations.

(4) Science, ecology and advocacy. 
 Scientists are currently faced with the immense challenge of better informing the public and policy makers as to the underlying causes and potential consequences of human-induced simplification of the biosphere. Although our knowledge of factors shaping the evolution, assembly and functioning of ecosystems is poorly understood, we do know that over large spatial and temporal scales, conditions and processes (‘ecosystem services’) which nurture life and humanity are generated. At the same time, sophisticated techniques are being employed around the world by powerful, vested interests that are aiming to change the way the public thinks about the environment. For example, a number of dubious sources are invoking science as a tool to influence and reshape public opinion, to attack the consensus view held amongst the scientific community, and to ultimately influence politicians into reducing environmental regulations. In the face of this new threat from the political right, scientists are faced with the immense challenge of better informing the public and policy makers as to the underlying causes and potential consequences of human-induced changes to the biosphere and their consequent effects on the delivery of ecosystem services. Over the past several years I have become actively involved in discussions based on bridging economics and ecology, in an attempt to stem the relentless flow of disinformation emanating from a number of surprisingly well-endowed think tanks and public relations firms that are distorting science to support a political agenda and pre-determined worldview on environmental issues.  


Anne-Marie Cortesero, University of Rennes, France

Saskya van Nouhuys, Cornell University USA

Mark Jervis, University of Cardiff, UK

James Bullock, Department of Ecology and Hydrology, Wool, Dorset, U.K.

Heiko Vogel, Department of Chemistry and Evolution, Max Planck Institute, Jena, Germany

Toshiharu Tanaka, Department of Bioagricultural Sciences, Nagoya University, Japan

Caroline Muller, Bielefeld, Germany


Royal Society Postdoctoral Fellow, 1995-1997

ALW grant for PhD, 2001-2005, co-supervising Linde Hess

ALW grant for PhD, 2003-2007, co-supervising Joanneke Talsma

ALW grant for PhD, 2003-2007, senior supervisor for Roxina Soler


Selected publications

Loxdale, H. Lushai, G., Harvey, J.A. 2011
The evolutionary improbability of 'generalism' in nature with special reference to insects.
Biological Journal of the Linnean Society (in press)
Harvey, J.A., Gols, R. 2011.
Development of Mamestra brassicae and its solitary endoparasitoid Microplitis mediator on two populations of the invasive weed, Bunias orientalis.
Population Ecology (in press)
Harvey, J.A., Wagenaar, R., Gols, R. 2011
Differing host exploitation efficiencies in two hyperparasitoids: when is a 'match made in heaven'?
Journal of Insect Behavior (in press)
Harvey, J.A.,van Dam,N.M., Raiijmakers, C., Bullock, J.M., Gols, R. 2011
Tri-trophic effects of inter- and intra-population variation in defence chemistry of wild cabbage (Brassica oleracea).
Oecologia (in press)
Harvey, J.A., Pashalidou, F., Soler, R., Bezemer, T.M. 2011
Intrinsic competition between two secondary hyperparasitoids results in temporal trophic switch.
Oikos (in press).
Bezemer, T.M., Fountain, M., Barea, J.,Christensen, S.,Dekker, S.,Duyts, H., van Hal., R.,Harvey, J.,Hedlund, K.,Maraun,M., Mikola, J.,Mladenov,A., Robin, C.,de Ruiter,P., Scheu,S., Setälä,H., Šmilauer, P.,van der Putten, W. H. 2010
Divergent composition but similar function of soil food webs beneath individual plants: plant species and community effects.
Ecology 91: 3027-3036
Bukovinszky, T., Gols, R., Kamp, A., Oliveira-Domingues, F. de, Hamback, P.A., Jongema, Y., Bezemer, T.M., Dicke, M., van Dam, N.M., Harvey, J.A. 2010
Combined effects of patch size and plant nutritional quality on local densities of insect herbivores.
Basic and Applied Ecology 11: 396-405
Harvey, J.A., Bukovinszky, T., van der Putten, W.H. 2010
Interactions between invasive plants and insect herbivores: A plea for a multitrophic perspective.
Biological Conservation 143: 22512-2259
Harvey, J.A., Sano, T., Tanaka, T. 2010
Differential host growth regulation by the solitary endoparasitoid, Meteorus pulchricornis in two hosts of greatly differing mass.
Journal of Insect Physiology 56: 1178-1183
Harvey, J.A., Biere, A., Fortuna, T., Vet, L.E.M., Engelkes, T., Morrien, E., Gols, R., Verhoeven, K., Vogel, H., Macel, M., Heidel-Fischer, H.M., Schramm, K., van der Putten, W.H. 2010
Ecological fits, mis-fits and lotteries involving insect herbivores on the invasive plant, Bunias orientalis.
Biological Invasions 12: 3045-3059
Soler, R.,Harvey, J.A., Rouchet, R., Schaper, S.V., Bezemer, T.M. 2010
Impacts of belowground herbivory on oviposition decisions in two congeneric butterfly species.
Entomologia Experimentalis et Applicata 136: 191-198
Visser, B., Le Lann, C., den Blanken, F.J., Harvey, J.A., van Alphen, J.J.M., Ellers, J. 2010
Loss of lipid synthesis as an evolutionary consequence of a parasitic lifestyle.
Proceedings of the NationalAcademyofSciences(U.S.A.) 107: 8677-8682
Bezemer, T.M., Harvey, J.A., Kamp, A.F.D., Wagenaar, R., Gols R., Kostenko, O., Fortuna, T., Engelkes, T., Vet, L.E.M., van der Putten, W.H., Soler, R. 2010
Behaviourof male and female parasitoids in the field: influence of patch size, host density, and habitat complexity.
Ecological Entomology 35: 341-351
Harvey, J.A., Poelman, E.H., Gols, R. 2010
Development and host utilization in Hyposoter ebeninus (Hymenoptera: Ichneumonidae), a solitary endoparasitoid of Pieris rapae and P. brassicae caterpillars (Lepidoptera: Pieridae).
Biological Control 53: 312-318.
Harvey, J.A., Hamilton, J.G.C., Ward, R.M. 2010
Presence of fire ant, Solenopsis invicta (Westwood)(Hymenoptera:Formicidae) stimulates burrowing behavior by larvae of the sandfly, Lutzomyia longipalpis (Lutz & Neiva)(Diptera:Psychididae).
Neotropical Entomology 39: 137-139.
Gols. R., Harvey, J.A. 2009.
The effect of host developmental stage at parasitism on sex-related size differentiation in a larval endoparasitoid.
Ecological Entomology34: 755-762.
Harvey, J.A., Gols, R., Strand, M.R. 2009
Development and intrinsic competition amongst three endoparasitoid wasps with differing host usage strategies
Entomologia Experimentalis et Applicata 130: 138-148
Harvey, J.A., Wagenaar, R., Bezemer, T.M. 2009
Interactions to the 5th trophic level: secondary and tertiary parasitoid wasps show extraordinary efficiency in utilizing host resources
Journal of Animal Ecology 78: 686-692
Harvey, J.A. 2009
Preparing a paper for publication: an action plan for rapid composition and completion
Acta Zoologica Fennica 46: 158-164
Nakamatsu, Y., Harvey, J.A., Tanaka, T. 2009
Intraspecific competition between adult females of the hyperparasitoid Trichomalopsis apanteloctena (Hymenoptera: Chelonidae), for domination of Cotesia kariyai (Hymenoptera: Braconidae) cocoons
Annals of the Entomological Society of America 102: 172-180
Gols, R., van Dam., N.M., Raaijmakers, C.E., Dicke, M., Harvey, J.A. 2009
Are population-related differences in plant quality reflected in the preference and performance of two endoparasitoid wasps?
Oikos 118: 733-743
Soler, R., Schaper, S., Harvey, J.A., Cortesero, A.M., Vet, L.E.M., van der Putten, W.H., Bezemer, T.M. 2009
Influence of presence and spatial arrangement of belowground insects on host-plant selection of aboveground insects: a field study.
Ecological Entomology 34: 399-345
Bukovinszky, T., Poelman, E.L., Gols, R., Vet, L.E.M., Harvey, J.A., Dicke, M. 2009
Consequences of constitutive and induced variation in plant nutritional quality for immune defence of an herbivore against parasitism
Oecologia 160: 299-308
Qui, B., Harvey, J.A., Raaijmakers, C.E, Vet, L.E.M., van Dam,N.M 2009
Non-linear effects of plant root and shoot jasmonic acid application on the performance of Pieris brassicae and its parasitoid Cotesia glomerata
Functional Ecology 23:496-505
Gols, R., Harvey, J.A. 2009
Plant-mediated effects in the Brassicaceae on the performance and behaviour of parasitoids
Phytochemistry Reviews 8: 187-206
Verhoeven, K.J.F., Biere, A., Harvey, J.A., van der Putten, W.H. 2009
Plant invaders and their novel natural enemies: who is naive?
Ecology Letters 12: 107-117
Takai, N., Nakamatsu, Y., Harvey, J.A., Miura, K., Tanaka, T. 2008
Brood attending by females of the hyperparasitoid Trichomalopsis apanteloctena (Hymenoptera: Pteromalidae) on cocoon clusters of its host, Cotesia kariyai (Hymenoptera: Braconidae) and its effects on reproduction, development and survival
European Journal of Entomology 105: 855-862
Soler, R., Harvey, J.A., Bezemer, T.M. Stuefer, J.F. 2008
Plants as green phones: novel insights into plant-mediated communication between below- and above-ground insects
Plant Signaling and Behavior 38: 519-520
Engelkes, T., Morrien, E., Verhoeven, K.J.F., Bezemer, T.M., Biere, A., Harvey, J.A., McIntyre, L.M., Tamis, W.L., van der Putten, W.H. 2008
Successful range-expanding plants experience less above-ground and below-ground enemy impact
Nature 456: 946-948
Reudler-Talsma, J.H., Biere, A., Harveyu, J.A. van Nouhuys, S. 2008
Oviposition cues for a specialist butterfly-plant chemistry and size
Journal of Chemical Ecology 34: 1202-1212
Harvey, J.A., Kos, M., Nakamatsu, Y., Tanaka, T., Dicke, M., Vet, L.E.M., Brodeur, J., Bezemer, T.M. 2008
Do parasitized caterpillars protect their parasitoids from hyperparasitoids? A test of the 'usurpation hypothesis'
Animal Behaviour 76: 701-708
Gols, R., Witjes, L.M.A., van Loon, J.J.A., Posthumus, M.A., Dicke, M., Harvey, J.A. 2008
The effect of direct and indirect defenses in two wild brassicaceous plant species on a specialist herbivore and its gregarious endoparasitoid
Entomologia Experimentalis et Applicata 128: 99-108
Smallegange, R., van Loon, J.J.M., Blatt, S.E., Harvey, J.A., Dicke, M. 2008
Parasitoid load affects plant fitness in a tritrophic system
Entomologia Experimentalis et Applicata 128: 172-183
Blatt, S.E., Smallegange, R.C., Hess, L., Harvey, J.A., Dicke, M., van Loon, J.J.M. 2008
Tolerance of Brassica nigra to Pieris brassicae herbivory
Botany-Botanique 86: 641-648
Harvey, J.A., van der Putten, W.H., Turin, H., Wagenaar, R., Bezemer, T.M. 2008
Effects of changes in plant species richness and community traits on carabid assemblages and feeding guilds
Agriculture, Ecosystems and Environment 127: 100-106
Harvey, J.A., Bezemer, T.M., Gols. R., Nakamatsu, Y., Tanaka, T. 2008
Comparing the physiological effects and function of larval feeding in closely related endoparasitoids (Braconidae: Microgastrinae)
Physiological Entomology 33: 217-225
Gols, R., Bukovinszky, T., van Dam, N.M., Bullock, J.M., Dicke, M., Harvey, J.A. 2008
Genetic variation in the defense chemistry of wild cabbage populations and its effects on native herbivores and their endoparasitoids.
Ecology 89: 1616-1626
Gols, R ., Bukovinszky, T., van Dam, N.M., Dicke, M., Bullock, J.M., Harvey, J.A. 2008
Performance of generalist and specialist herbivores and their endoparasitoids differs on cultivated and wild Brassica populations
Journal of Chemical Ecology 34: 132-143
Jervis, M.A., Ellers, J., Harvey, J.A. 2008
Resource acquisition, allocation, and utilization in parasitoid reproductive strategies.
Annual Review of Entomology 53: 361-385
Harvey, J.A. 2008
Comparing and contrasting development and reproductive strategies in the pupal hyperparasitoids Lysibia nana and Gelis agilis.
Evolutionary Ecology 22: 153-166
Talsma, J.R., Elzinga, J., Harvey, J.A., Biere, A. 2007
Optimum and maximum host size at parasitism for the endoparasitoid Hyposoter didymator (Hymenoptera: Ichneumonidae) differ greatly between two host species.
Environmental Entomology 36: 1048-1053
Smallegange, R.C., van loon, J.J.A., Blatt, S.E., Harvey, J.A., Agerbirk, N., Dicke, M. 2007
Flower vs. leaf feeding by Pieris brassicae: glucosinolate-rich flower tissues are preferred and sustain higher growth rate.
Journal of Chemical Ecology 33: 1831-1834
Nakamatsu, Y., Tanaka, T., Harvey, J.A. 2007
Cotesia kariyai larvae need an anchor to emerge from the host Pseudeletia separata.
Archives of Insect Biochemistry and Physiology 66: 1-8
Soler, R., Harvey, J.A., Bezemer, T.M. 2007
Foraging efficiency of a parasitoid of a leaf herbivore is influenced by root herbivory on neighbouring plants.
Functional Ecology 21: 969-974
Giron, D., Harvey, J.A., Johnson, J.A., Strand, M.R. 2007
Male soldier caste larvae are non-aggressive in the polyembryonic wasp Copidosoma floridanum.
Biology Letters 3: 431-434
Harvey, J.A., Gols, R., Wagenaar, R., Bezemer, T.M. 2007
Development of an insect herbivore and its pupal parasitoid reflect differences in direct plant defense.
Journal of Chemical Ecology 33: 1556-1569
Gols, R., Raaijmakers, C., van Dam, N.M., Dicke, M., Bukovinszky, T., Harvey, J.A. 2007
Seasonal effects of plant chemistry in crucifers influence tritrophic interactions.
Basic and Applied Ecology 8: 421-433
Soler, R., Bezemer, T.M., Cortesero, A.M., van der Putten, W.H., Vet, L.E.M., Harvey, J.A. 2007
Impact of foliar herbivory on the development of a root-feeding insect and its parasitoid.
Oecologia 152: 257-264
Soler, R., Harvey, J.A., Kamp, A.F.D., Vet, L.E.M., van der Putten, W.H., van Dam, N.M., Stuefer, J.F., Gols, R., Hordijk, C.A., Bezemer, T.M. 2007
Root herbivores influence the behaviour of an aboveground parasitoid through changes in plant-volatile signals.
Oikos 116: 367-376
Elzinga, J.A., Zwakhaals, K., Harvey, J.A., Biere, A. 2007
The parasitoid complex associated with the specialist Hadena bicruris (Lepidoptera: Noctuidae) on Silena latifolia.
Journal of Natural History 41: 101-123
Harvey, J.A., van Dam, N.M., Witjes, L.M.A., Soler, R., Gols, R. 2007
Effects of dietary nicotine on the development of a herbivore, its parasitoid and secondary hyperparasitoid over four trophic levels.
Ecological Entomology 32: 15-23
Harvey, J.A., Witjes, L.M.A., Benkirane, M., Duyts, H., Wagenaar, R. 2007
Comparative suitability and ecological importance of Arabidopsis thaliana and Brassica oleracea as foodplants for the cabbage butterfly, Pieris rapae.
Plant Ecology 189: 117-126.
Nakamatsu, Y., Kuriya, K., Harvey, J.A., Tanaka, T. 2006
Influence of nutrient deficiency caused by host developmental arrest on the growth and development of a koinobiont parasitoid.
Journal of Insect Physiology 52: 1105-1112
Harvey, J.A., Wagenaar, R. 2006
Development of the herbivore Pieris rapae and its parasitoid Cotesia rubecula on crucifers of field edges.
Journal of Applied Entomology 130: 465-470
Dedov, I., Stoyanov, I.L., Penev, L., Harvey, J.A., van der Putten, W.H., Bezemer, T.M. 2006
Long-term effects of sowing high or low diverse seed mixtures on plant and gastropod diversity.
Acta Oecologia 30: 183-191
Nakamatsu, Y., Harvey, J.A., Tanaka, T. 2006
Emergence behavior of the endoparasitic wasp, Cotesia kariyai.
European Journal of Entomology 103: 355-360
Bezemer, T.M., Harvey, J.A., Kowalchuk, G.A., Korpershoek, H., van der Putten, W.H. 2006
Interplay between Senecio jacobeae and plant, soil and above-ground insect community composition.
Ecology 87: 2002-2013
Harvey, J.A., Vet, L.E.M., Witjes, L.M.A., Bezemer, T.M. 2006
Remarkable similarity in body mass of a secondary hyperparasitoid Lysibia nana and its primary parasitoid host Cotesia glomerata emerging from cocoons of a comparable size.
Archives of Insect Biochemistry and Physiology 61: 170-183
Harvey, J.A. 2005
Factors affecting the evolution of development strategies in parasitoid wasps: the importance of functional constraints and incorporating complexity.
Entomologia Experimentalis et Applicata 117: 1-13.
Soler, R., Bezemer, T.M., van der Putten, W.H., Vet, L.E.M., Harvey, J.A. 2005
A multitropic approach linking below and aboveground insects: the effects of root herbivory on the performance of an aboveground herbivore, its parasitoid and hyperparasitoid. Journal of Animal Ecology 74: 1121-1130.
Gols, R., Bukovinsky, T., Hemerik, L., Harvey, J.A., van Lenteren, J.C., Vet, L.E.M. 2005
Effect of vegetation composition and structure on foraging behaviour of the parasitoid Diadegma semiclausum.
Journal of Animal Ecology 74: 1059-1068.
Bezemer, T.M., Harvey, J.A., Mills, N. J. 2005
Relationship between body size and adult nutrition on reproductive parameters in the parasitoid wasp, Mastrus ridibundus.
Ecological Entomology 30: 571-580.
Bezemer, T.M., De Deyn, G.B., Bossinga, T.M., Harvey, J.A., van der Putten, W.H. 2005
Soil faunal community composition drives aboveground plant-herbivore-parasitoid interactions.
Ecology Letters 8: 652-661.
Harvey, J.A., Witjes, L.M.A. 2005
Comparing and contrasting life-history and development strategies in the pupal hyperparasitoids Lysibia nana and Gelis agilis (Hymenoptera: Ichneumonidae).
Applied Entomology and Zoology 40: 309-316.
Elzinga, J.A., Harvey, J.A., Biere, A. 2005
Age dependent clutch size in a koinobiont parasitoid.
Ecological Entomology 30: 17-27.
Harvey, J.A., van Nouhuys, S., Biere, A. 2005
Effects of quantitative variation of allelochemicals in Plantago lanceolata on the development of specialist and generalist herbivores and their endoparasitoids.
Journal of Chemical Ecology 31: 287-302.
Van der Putten, W.H., De Ruiter, P.C., Bezemer, T.M., Harvey, J.A., Wassen, M., Wolters, V. 2004. 2004
Trophic interactions in a changing world.
Basic and Applied Ecology 5: 487-494.
Harvey, J.A., Witjes, L.M.A., Wagenaar, R. 2004
Development of hyperparasitoid Lysibia nana in a multitrophic framework.
Environmental Entomology 33: 1488-1496
Harvey, J.A., Bezemer, T.M., Elzinga, J.A.,Strand, M.R. 2004
Host quality for development of the solitary endoparasitoid, Microplitis demolitor: host quality does not increase with host age and size.
Ecological Entomology 29: 35-43.
Eliopoulos PA, Harvey JA, Athanassiou CG, Stathas GJ. 2003
Effect of biotic and abiotic factors on reproductive parameters of the synovigenic endoparasitoid Venturia canescens (Gravenhorst) (Hymenoptera: Ichneumonidae). Physiological Entomology 28: 268-275.
Sznajder B, Harvey JA 2003
Second and third trophic level effects of variation in food plant quality reflect dietary specialisation of herbivores and their endoparasitoids.
Entomologia Experimentalis et Applicata 109: 73-82.
Elzinga JA, Harvey JA, Biere A. 2003
The effects of host weight at parasitism on fitness correlates of the gregarious koinobiont parasitoid Microplitis tristis and consequences for food consumption by its host, Hadena bicruris.
Entomologia Experimentalis et Applicata 108: 95-106.
Kadash K, Harvey JA, Strand MR 2003
Cross-protection experiments with parasitoids in the genus Microplitis (Hymenoptera: Braconidae) suggest a high level of specificity in their associated bracoviruses
Journal of Insect Physiology 49: 473-482
Harvey JA, van Dam NM, Gols GJZ 2003
Interactions over four trophic levels: foodplant quality affects development of a hyperparasitoid as mediated through a herbivore and its primary parasitoid
Journal of Animal Ecology 72: 520-531
van Dam NM, Harvey JA, Wackers FL, Bezemer TM, van der Putten WH, Vet LEM 2003
Interactions between aboveground and belowground induced responses.
Basic and Applied Ecology 4: 63-77
Biere A, Elzinga JA, Honders SC, Harvey JA 2002
A plant pathogen reduces the enemy-free space of an insect herbivore on a shared host plant.
Proceedings of the Royal Society B 269: 2197-2204
Harvey JA, Srand MR 2002
The developmental strategies of endoparasitoid wasps vary with host feeding ecology.
Ecology 83: 2439-2451.
Wilson EO, Lovejoy T, Myers N, Harvey JA, Pimm SL 2001. 2001
Biodiversity distortions in Lomborg’s “The Skeptical Environmentalist”.
Union of Concerned Scientists
Publisher: http://www.ucsusa.org/index.html
Pimm SL, Harvey JA 2001
No need to worry about the future. Review of “The Skeptical Environmentalist”, by Bjorn Lomborg.
Nature 414: 149-150
Harvey JA 2001
The natural economy.
Nature 413: 463
Harvey JA, Harvey IF, Thompson DJ 2001
Lifetime reproductive success in the endoparasitoid wasp, Venturia canescens.
Journal of Insect Behavior 14: 573-593
Jervis MA, Heimpel G, Ferns P, Harvey JA, Kidd NAC 2001
Egg maturation strategies in parasitoid wasps: a comparative analysis of ‘ovigeny’.
Journal of Animal Ecology 70: 442-458
Putten, WH van der, Vet LEM, Harvey JA, Wackers FL. 2001
Linking above-belowground multitrophic interactions of plants, herbivores and their antagonists.
Trends in Ecology and Evolution 16: 547-554
Harvey JA, Corley LS, Strand MR 2000 Competition induces adaptive shifts in caste ratios of a polyembryonic wasp.
Nature 406: 183-186.
Pimm SL, Harvey JA 2000
The world at your fingertips.
Oikos 91: 209-212
Harvey JA 2000
Ecological scrabble played in earnest. Review of “Fragile Dominion”, by Simon A. Levin.
Nature 404: 813-814
Harvey JA 2000
Dynamic effects of parasitism by an endoparasitoid wasp on the development of two host species: implications for host quality and parasitoid fitness.
Ecological Entomology 25: 267-278
Harvey JA, Kadash K, Strand MR 2000
Differences in larval feeding behavior correlate with altered development strategies in two parasitic wasps: implications for the size-fitness hypothesis.
Oikos 88: 621-629
Hemerik L, Harvey JA 1999
Flexible larval growth and the timing of destructive feeding by a solitary endoparasitoid: an optimal foraging problem in an evolutionary perspective.
Ecological Entomology 24: 308-315.
Harvey JA 1999
The male tail.
Nature 402: 1396
Harvey JA, Jervis MA, Vet LEM, Gols GJZ, Jiang N. 1999
Development of the parasitoid, Cotesia rubecula (Hymenoptera: Braconidae) in Pieris rapae and P. brassicae (Lepidoptera: Pieridae): evidence for host regulation.
Journal of Insect Physiology 45:173-182
Harvey JA, Gols GJZ 1998
The effect of host quality on progeny and sex allocation in the pupal ectoparasitoid, Muscidifurax raptorellus (Hymenoptera: Pteromalidae).
Bulletin of Entomological Research 88: 299-304
Harvey JA, Vet LEM, Gols GJZ, Jiang N. 1998
Nutritional ecology of the interaction between larvae of the gregarious ectoparasitoid Muscidifurax raptorellus (Hymenoptera: Pteromalidae) and its host Musca domestica (Diptera: Muscidae).
Physiological Entomology 23:113-120
Harvey JA, Vet LEM. 1997
Venturia canescens parasitizing Galleria mellonella and Anagasta kuehniella differing suitability of two hosts with highly variable growth potential.
Entomologia Experimentalis et Applicata 84:93-100
Sait, S.M., Begon, M., Thompson, D.J., Harvey, J.A., Hails, R.S. 1997
Factors affecting host selection in an insect host parasitoid interaction.
Ecological Entomology 22: 225-230.
Harvey, J.A. 1996
Venturia canescens parasitizing Galleria mellonella and Anagasta kuehniella: is the parasitoid a conformer or regulator?
Journal of Insect Physiology 42: 1017-1025.
Harvey J.A., Thompson, D.J., Heyes, T.J. 1996
Reciprocal costs and influences of parasitism on the development of Corcyra cephalonica and its endoparasitoid, Venturia canescens.
Entomologia Experimentalis et Applicata 81: 39-45.
Sait, S.M., Begon, M.E., Thompson, D.J., Harvey, J.A. 1996
Indiscriminate parasitism of baculovirus-infected Plodia interpunctella by. Venturia canescens and subsequent virus transmission.
Functional Ecology 10: 586-591.
Sait, S.M., Andreev, R., Begon, M., Thompson, D.J., Harvey, J.A., Swain, R.D. 1995
Venturia canescens parasitizing Plodia interpunctella: host vulnerability – a matter of degree.
Ecological Entomology 20: 199-201.
Harvey, J.A., Thompson, D.J. 1995
Influence of host species behaviour on foraging and acceptance by the parasitoid wasp, Venturia canescens (Hymenoptera: Ichneumonidae).
Entomophaga 40: 193-210.
Harvey, J.A., Thompson, D.J. 1995
Developmental interactions between the solitary endoparasitoid Venturia canescens (Hymenoptera: Ichneumonidae) and two of its hosts, Plodia interpunctella and Corcyra cephalonica (Lepidoptera: Pyralidae).
European Journal of Entomology 92: 427-435.
Harvey, J.A., Harvey, I.F., Thompson, D.J. 1995
The effect of host nutrition on development of the solitary parasitoid wasp, Venturia canescens.
Entomologia Experimentalis et Applicata 75: 213-220.
Harvey, J.A., Harvey, I.F., Thompson, D.J. 1994
Flexible larval growth allows use of a range of host sizes by a parasitoid wasp.
Ecology 75: 1420-1428.
Harvey, J.A., Harvey I.F., Thompson, D.J. 1993
The effect of superparasitism on development of the solitary parasitoid wasp, Venturia canescens. (Hymenoptera: Ichneumonidae).
Ecological Entomology 18: 203-208.