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Featured Paper
Butterflies in the family Lycaenidae are often the focus of conservation efforts. However, our understanding of lycaenid population dynamics has been limited to relatively few examples of long-term monitoring data that have been reported. Here, factors associated with population regulation are investigated using a complete record of a single population of the silvery blue, Glaucopsyche lygdamus Doubleday (Lepidoptera: Lycaenidae). Adults of G. lygdamus were first observed in an annual grassland near Davis, California, in 1982 and were last seen in 2003. Relationships between inter-annual variation in abundance and climatic variables were examined, accounting for density dependent effects. Significant effects of both negative density dependence and climatic variation were detected, particularly precipitation and temperature during winter months. Variation in precipitation, the strongest predictor of abundance, was associated directly and positively with butterfly abundance in the same year. Winter temperatures had a negative effect in the same year, but had a lagged, positive effect on abundance in the subsequent year. Mechanistic hypotheses are posed that include climatic effects mediated through both larval and adult plant resources.
Recently Published
- Short-term response of soil spiders to cover-crop removal in
an organic olive orchard in a Mediterranean setting
- Validation of reference genes for quantitative expression
analysis by real-time RT-PCR in four lepidopteran insects
- Compared morphology of the immatures of males of two
urban ant species of Camponotus
- Four botanical extracts are toxic to the hispine beetle,
Brontispa longissima, in laboratory and semi–field trials
- Influence of leaf litter moisture on the efficiency of the
Winkler method for extracting ants
- Methyl eugenol: Its occurrence, distribution, and role in
nature, especially in relation to insect behavior and
pollination
- Effect of different host plants on nutritional indices of the
pod borer, Helicoverpa armigera
- Mediterranean species of the spittlebug genus Philaenus:
Modes of chromosome evolution
- Morphometric and genetic differentiation of two sibling
gossamer–wing damselflies, Euphaea formosa and E.
yayeyamana, and adaptive trait divergence in subtropical East
Asian islands
- Morphology and behavior of the early stages of the skipper,
Urbanus esmeraldus, on Urera baccifera, an ant–visited host
plant
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About the Journal
The Journal of Insect Science is an international, open access, peer-reviewed journal publishing papers in all aspects of the biology of insects and other arthropods from the molecular to the ecological, and their agricultural and medical impact. Published online by the University of Wisconsin Libraries, it is freely available to individuals and institutions, and provides a viable alternative to excessively priced scientific journals.
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