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Crop domestication and its impact on naturally selected trophic interactions.
Crop domestication is the process of artificially selecting plants to increase their suitability to human requirements: taste, yield, storage, and cultivation practices. There is increasing evidence… Expand
Interactions over four trophic levels: foodplant quality affects development of a hyperparasitoid as mediated through a herbivore and its primary parasitoid
1. 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… Expand
Reduced foraging efficiency of a parasitoid under habitat complexity: implications for population stability and species coexistence
1. Habitat complexity may stabilize interactions among species of different trophic levels by providing refuges to organisms of lower trophic levels. 2. Searching behaviour of the parasitoid,… Expand
Effects of dietary nicotine on the development of an insect herbivore, its parasitoid and secondary hyperparasitoid over four trophic levels
Abstract 1. Allelochemicals in herbivore diet are known to affect the development of higher trophic levels, such as parasitoids and predators.
Intrinsic competition among solitary and gregarious endoparasitoid wasps and the phenomenon of ‘resource sharing’
1. Intrinsic competition was compared in three species of braconid wasps, the solitary Meteorus pulchricornis Wesmael, and the gregarious Cotesia kariyai (Watanabe) and Cotesia ruficrus Haliday in… Expand
Flavonoids from cabbage are feeding stimulants for diamondback moth larvae additional to glucosinolates: Chemoreception and behaviour
In caterpillars two styloconic contact chemoreceptors on the maxillary galea are assumed to contain the main taste receptors involved in host plant selection. The diamondback moth, Plutella… Expand
Reproductive escape: annual plant responds to butterfly eggs by accelerating seed production
1.Plants respond to insect herbivores with changes in physical and chemical traits, both locally and systemically, in leaves and flowers. Such phenotypic changes may influence the behaviour of every… Expand
Behaviour of male and female parasitoids in the field: influence of patch size, host density, and habitat complexity
1. Two field experiments were carried out to examine the role of patch size, host density, and complexity of the surrounding habitat, on the foraging behaviour of the parasitoid wasp Cotesia… Expand
Comparing the physiological effects and function of larval feeding in closely‐related endoparasitoids (Braconidae: Microgastrinae)
The larvae of most endoparasitoid wasps consume virtually all host tissues before pupation. However, in some clades, the parasitoid larvae primarily consume haemolymph and fat body and emerge through… Expand
Population genetic structure of Orchesella cincta (Collembola; Hexapoda) in NW Europe as revealed by microsatellite markers.
Summary We studied genetic variation and population differentiation in the springtail Orchesella cincta L. An earlier approach, using allozymes, revealed extremely low variation among and within… Expand