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Article
Surprisingly long body length of the lungworm Parafilaroides gymnurus from common seals of the Dutch North Sea
Lungworms of the genera Parafilaroides and Otostrongylus are responsible for parasitic bronchopneumonia, the foremost disease of eastern Atlantic common seals (EACS, Phoca vitulina vitulina) in the Dutch North Se...
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Article
A steep cline in ladybird melanism has decayed over 25 years: a genetic response to climate change?
A cline in the frequency of melanic morphs of the two-spot ladybird, Adalia bipunctata, was first surveyed in 1980 along a transect extending inland from the coast in the Netherlands. At that time, the frequency ...
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Article
Evolutionary dynamics of multilocus microsatellite arrangements in the genome of the butterfly Bicyclus anynana, with implications for other Lepidoptera
The sequences flanking microsatellites isolated from the butterfly Bicyclus anynana display high levels of similarity among different loci. We examined sequence data for evidence of the two mechanisms most likely...
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Article
Realized correlated responses to artificial selection on pre-adult life-history traits in a butterfly
We use artificial selection experiments targeted on egg size, development time or pupal mass within a single butterfly population followed by a common-garden experiment to explore the interactions among these ...
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Article
Evo-devo focus issue
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Article
Genetic basis and fitness consequences of winglessness in the two-spot ladybird beetle, Adalia bipunctata
The genetic basis and fitness consequences of winglessness were investigated in the two-spot ladybird beetle, Adalia bipunctata. By breeding lines from a wingless individual found at The Uithof, Utrecht in The Ne...
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Article
Genetic and environmental sources of egg size variation in the butterfly Bicyclus anynana
By dividing families of the tropical butterfly, Bicyclus anynana, among different larval (including early pupal) and adult (including late pupal) temperatures, we investigate the genetic and environmental effects...
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Article
Lack of response to selection for lower fluctuating asymmetry of mutant eyespots in the butterfly Bicyclus anynana
Fluctuating asymmetry (FA) is claimed both to provide a means of evaluating developmental stability, and to reflect an individual's quality or the stress experienced during development. FA refers to the nondir...
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Article
Chemical defence in a sawfly: genetic components of variation in relevant life-history traits
Larvae of several tenthredinid sawfly species readily release droplets of haemolymph through their integument when attacked by predators. This defence mechanism via ‘bleeding’ is characterised by a low integum...
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Chapter
Guidelines in conservation genetics and the use of the population cage experiments with butterflies to investigate the effects of genetic drift and inbreeding
Bottleneck experiments were performed on the tropical butterfly Bicyclus anynana. The reasons for choosing a species of butterfly are described together with the methodology used in the population cage experiment...
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Chapter and Conference Paper
The Variance in Genetic Diversity Among Subpopulations is More Sensitive to Founder Effects and Bottlenecks Than is the Mean: A Case Study
There are three widely-recognised effects of genetic drift on polymorphic traits which are associated with ‘bottlenecks’ or ‘founder events’ in populations. Rare alleles are expected to be lost, average hetero...
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Chapter and Conference Paper
What Is the Progress Towards Understanding the Selection Webs Influencing Melanic Polymorphisms in Insects?
Industrial melanism refers to a correlation between high frequencies of melanic forms of an insect and regions of industrialization. This phenomenon in the peppered moth Biston betularia (L.) is the classic textb...
