▪ Abstract Studies of dispersal polymorphism in insects have played a pivotal role in
advancing our understanding of population dynamics, life history evolution, and the …

▪ Abstract Movement between discrete habitat patches can present significant challenges to
organisms. Freshwater invertebrates achieve dispersal using a variety of mechanisms that …

Many pterygote (winged) insects have secondarily become flightless; why has this
occurred? In this paper I test for an association between the frequency of flightlessness and …

▪ Abstract In evolutionary ecology, risk-spreading (ie bet-hedging) is the idea that
unpredictably variable environments favor genotypes with lower variance in fitness at the …

Many insects are capable of developing into either long-winged or short-winged (or
wingless) morphs, which enables them to rapidly match heterogeneous environments. Thus …

Within a population there are frequently several discrete morphs. While in some cases,
particularly color polymorphisms, this variation can be explained by simple Mendelian …

The costs of migration, defined as persistent, straightened-out movement accompanied by
and dependent upon an inhibition of response to vegetative stimuli that will eventually arrest …

It is well known that there is no necessary one-to-one relationship between the genetic
makeup of an organism-its genotype-and the various characters and properties that …

Each year the Mythimna separate (Walker), undertakes a seasonal, long-distance,
multigeneration roundtrip migration between southern and northern China. Despite its …

Summary 1 Recent studies on butterflies have documented apparent evolutionary changes
in dispersal rate in response to climate change and habitat change. These studies often …