| resource selection by female moths in a heterogeneous environment: what is a poor girl to do? | 1. according to the preference-performance hypothesis, female insects select resources that maximize offspring performance. to achieve high fitness, leaf miner females should then adjust their oviposition behaviour in response to leaf attributes signalling high host quality. 2. here we investigate resource selection in tischeria ekebladella, a leaf-mining moth of the pedunculate oak (quercus robur), in relation to two alternative hypotheses: (1) females select their resources with respect to the ... | 2007 | 17714263 |
| spatial population structure of a specialist leaf-mining moth. | 1. the spatial structure of natural populations may profoundly influence their dynamics. depending on the frequency of movements among local populations and the consequent balance between local and regional population processes, earlier work has attempted to classify metapopulations into clear-cut categories, ranging from patchy populations to sets of remnant populations. in an alternative, dichotomous scheme, local populations have been classified as self-sustaining populations generating a sur ... | 2008 | 18422557 |
| can we predict indirect interactions from quantitative food webs?--an experimental approach. | 1. shared enemies may link the dynamics of their prey. recently, quantitative food webs have been used to infer that herbivorous insect species attacked by the same major parasitoid species will affect each other negatively through apparent competition. nonetheless, theoretical work predicts several alternative outcomes, including positive effects. 2. in this paper, we use an experimental approach to link food web patterns to realized population dynamics. first, we construct a quantitative food ... | 2011 | 20796204 |