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Insect Life History Patterns - Habitat and Geographic Variation (Hardcover, 1981 ed.)
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Insect Life History Patterns - Habitat and Geographic Variation (Hardcover, 1981 ed.)
Series: Proceedings in Life Sciences
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This volume results from a symposium entitled "Species and Ufe
History Patterns: Geographic and Habitat Variation", held during
the National Meeting of the Entomo- logical Society of America in
Denver, Colorado, USA in November, 1979. The stimu- lus to assemble
papers on this theme emerged from continuing discussions with col-
leagues concerning controversies in ecology and evolutionary
biology, namely those associated with plant-herbivore interactions,
life history theory, and the equilibrium status of communities. The
study organisms used in this series of reports are all either
herbivorous insects or those intimately associated with plants. In
this volume we stress the variation found in life history traits
and address some of the problems inherent in current life history
theory. We include as life history traits not only traditional
variables such as fecundity, size of young, and age to first and
peak reproduction, but also diapause and migration, traits that
synchronize reproduction with favorable plant resources. Because
life history traits of phytophagous insects are influenced in part
by spatial and temporal variation in the quality and availability
of their host plants, we also consider the role that dis-
continuities in plant quality play in reducing insect fitness.
Lastly, much of the tra- ditional life history theory concerns
itself with differences between the evolution of traits or
constellations of traits when populations incur primarily
density-independent, compared to density-dependent, mortality.
Consequently, we address this issue and attempt to shed light on
the equilibrium status of several phytophagous insect com-
munities.
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