▪ Abstract Most models of optimal progeny size assume that there is a trade-off between
progeny size and number, and that progeny fitness increases with increasing investment per …

We describe an emerging framework for understanding variation, selection and evolution of
phenotypic traits that are mathematical functions. We use one specific empirical example …

There are many different types of organisms in the world: they differ in size, physiology,
appearance, and life history. The challenge for evolutionary biology is to explain how such …

Over the past 40 years there has been an extraordinary effort to understand the relationships
of plant-feeding insects and their hosts. Anyone who is studying such problems knows the …

It has been argued that environmental variability favors variation in offspring size. We have
examined theoretically the effects of three types of environmental heterogeneity on parental …

Insects are selected for slow development (but relatively fast growth) in spring, but for fast
development in summer. These contrasting selection pressures explain five puzzling effects …

Maternal age influences offspring quality of many species of insects. This observed maternal
age influence on offspring performance may be mediated through maternal age effects on …

Debussche, M., Escarr6, J. and Lepart, J. 1982. Ornithochory and plant succession in
mediterranean abandoned orchards.-Vegetatio 48: 255-266.-, Lepart, J. and Molina, J …

This study assessed potential changes in the distributions of Australian butterfly species in
response to global warming. The bioclimatic program, BIOCLIM, was used to determine the …

Amino acids occur in most floral nectars but their role in pollinator attraction is relatively
unstudied. Nectars of butterfly-pollinated flower tend to have higher concentrations of amino …