H. C. J. Godfray

University of Oxford

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Cheryl J. Briggs

University of California, Santa Barbara

Rosemary S. Hails

National Trust

M. P. Hassell

Imperial College London

J. E. Beringer

University of Bristol

A. R. Kraaijeveld

University of Southampton

Stuart A. West

University of Oxford

Austin Burt

Imperial College London

Ace North

University of Oxford

Jane Memmott

University of Bristol

John H. Lawton

Council on Environmental Quality

Cooperative Institutions

Imperial College London

University of Oxford

National Institutes of Health

University of Washington

Natural Environment Research Council

Fogarty International Center

John Wiley & Sons (United States)

University of Leeds

University of Michigan–Ann Arbor

Centre National de la Recherche Scientifique

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Evolutionary theory of parent–offspring conflict

Nature (1995)

H. C. J. Godfray

Parent–offspring conflict

Conflict theories

Evolutionary Theory

Kin selection

10.1038/376133a0

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Citations (428)

Additional file 3: of How driving endonuclease genes can be used to combat pests and disease vectors

Figshare (2017)

H. C. J. Godfray Ace North Austin Burt

A compiled computer programme that allow classic homing gene drive and driving Y chromosomes to be explored separately and together (see Additional file 1: Note 19). (CDF 144 kb)

10.6084/m9.figshare.c.3877030_d3

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The Dynamics of Insect-Pathogen Interactions

Cambridge University Press eBooks (1995)

Cheryl J. Briggs Rosemary S. Hails N. D. Barlow H. C. J. Godfray

Insects are abundant members of all terrestrial and freshwater ecosystems and are also of immense economic importance, largely as pests and disease vectors, but occasionally having a more positive influence on human well-being as in the case of silk moths and honey bees. That they are subject to a variety of diseases has been understood for several centuries, but it has only been with the development of modern microbiology in the last sixty or so years that the widespread occurrence and biological diversity of insect diseases has been appreciated. Much of the impetus for the study of insect diseases has come from the possibility that they might be used as biological control agents to combat noxious pests, or from the need to preserve the health of economically valuable species. Thus the potential for insect diseases to control or regulate their host populations has been understood for many years. However, the ecological study of the population dynamics of insect-pathogen interactions is a relatively new field of biology and most work in this area has been carried out in the last fifteen years.

10.1017/cbo9780511629396.012

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Citations (36)

The Relationship between Parasitoid Size and Fitness in the Field, a Study of Achrysocharoides zwoelferi (Hymenoptera: Eulophidae)

Journal of Animal Ecology (1996)

Stuart A. West Kevin Flanagan H. C. J. Godfray

A knowledge of the relationship between body size and fitness is very important in many models of parasitoid behaviourial ecology. We estimated this relationship for Achrysocharoides zwoelferi (Hymenoptera, Eulophidae), a parasitoid of leaf mining moths (Gracillariidae) on willow (Salix). The size distribution of female wasps emerging from their pupae was compared with the size distribution of wasps caught while searching for hosts. A parametric statistical approach was used to obtain a function relating size to fitness. Laboratory estimates of the influence of size on a component of fitness, longetivity, were obtained under two different sets of experimental conditions. In the field, fitness increased rapidly with size over the first two-thirds of the observed size range, but plateaued (or possibly declined) in the last third of the range. One laboratory experiment showed no effect of size on fitness while the other did show an effect although much weaker than that observed in the field. This suggests caution in using results from the laboratory in parameterising behaviourial ecological models. The results are compared with two other field estimates of the influence of size on fitness which show broadly similar patterns.

Eulophidae

Gracillariidae

10.2307/5742

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Citations (157)

A comparative study of virginity in fig wasps

Animal Behaviour (1997)

Stuart A. West Edward Allen Herre Stephen G. Compton H. C. J. Godfray James M. Cook

Haplodiploidy

Virginity test

Eusociality

10.1006/anbe.1996.0494

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Citations (58)

Additional file 2: of How driving endonuclease genes can be used to combat pests and disease vectors

Figshare (2017)

H. C. J. Godfray Ace North Austin Burt

A compiled computer programme written in Mathematica, that allows further exploration of the CATCHA mechanism (see Additional file 1: Note 16). (CDF 44 kb)

10.6084/m9.figshare.c.3877030_d2

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Sociality and sex ratios in spiders

Trends in Ecology & Evolution (1987)

Mark A. Elgar H. C. J. Godfray

Sociality

10.1016/0169-5347(87)90192-3

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The Population Dynamic Consequences of Phenological Asynchrony between Parasitoids and their Hosts

Journal of Animal Ecology (1994)

H. C. J. Godfray M. P. Hassell Robert D. Holt

Populations of hosts and parasitoids with discrete generations frequently show imperfect phenological synchronization resulting in some hosts experiencing reduced or even no risk of parasitism. The population dynamic consequences of phenological asynchrony are explored by modelling within-generation dynamics by a set of delay-differential equations. Phenological asynchrony can stabilize an otherwise unstable interaction. The influence of the interaction between phenological asynchrony and other stabilizing forces on the stability and equilibrium population densities of hosts and parasitoids is studied. Preliminary results indicate that annual fluctuations in the synchrony between host and parasitoid populations can have a major effect on the persistence of the interaction

Asynchrony (computer programming)

10.2307/5577

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Citations (169)

The Recruitment of Parasitoid Species to Two Invading Herbivores

Journal of Animal Ecology (1995)

H. C. J. Godfray David J. L. Agassiz David R. Nash John H. Lawton

1. Two small species of leaf-mining moth, Phyllonorycter leucographella and P. plantani, colonized the British Isles during the 1980s. The parasitoid assemblage on the invading species is described and compared with assemblages on native Phyllonorcyter species. 2. Sixteen species of parasitoid were recorded from each invading host. Against initial predictions, the size of the assemblages were indistinguishable from those on native species. 3. The equitability of the distribution of individuals among paragitoid species was relatively low for assemblages on the two introduced hosts in comparison with native hosts. 4. It was predicted that the parasitoids attacking novel hosts should have a wider host range than those attacking native hosts. This was not found to be the case. 5. Cluster analysis revealed the assemblages on introduced species to be relatively dissimilar to those on native hosts. There was no particular similarity with native hosts on related host plants. 6. The most important parasitoid on P. platani was a specialist that invaded the British Isles at the same time as its host. The most important species on P. leucographella attacked hosts that had ecological features in common with the invader

10.2307/5899

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Citations (63)

Top-down versus bottom-up and the Ruritanian bean bug

Proceedings of the National Academy of Sciences (1998)

M. P. Hassell Michael J. Crawley H. C. J. Godfray John H. Lawton

In a recent article, Hunter uses the late George Varley and George Gradwell’s long-term data on the winter moth ( Operophtera brumata ) and green tortrix ( Tortrix viridana ) populations to propose a method of quantifying the relative importance of top-down effects (because of natural enemies) and bottom-up effects (because of resource competition) in influencing population dynamics. We believe this approach is deeply flawed. Using Varley and Gradwell’s winter moth study, we show that the problems with Hunter’s analysis lie in his misinterpretation of the population dynamics and his inappropriate use of statistical techniques. We also emphasize the importance of distinguishing clearly between two quite different things: firstly, top-down and bottom-up regulation of populations and secondly, the much simpler task of categorizing factors affecting changes in population density as either top-down or bottom-up processes.

George (robot)

10.1073/pnas.95.18.10661

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Citations (36)