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Sex-linked inheritance of diapause induction in the butterfly Pieris napi
Stockholm University, Faculty of Science, Department of Zoology.
Stockholm University, Faculty of Science, Department of Zoology. The University of Western Australia, Australia.
Stockholm University, Faculty of Science, Department of Zoology.
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Number of Authors: 6
2017 (English)In: Physiological entomology (Print), ISSN 0307-6962, E-ISSN 1365-3032, Vol. 42, no 3, 257-265 p.Article in journal (Refereed) Published
Abstract [en]

Many temperate insects survive harsh environmental conditions, such as winter, by entering a state of developmental arrest. This diapause state is predominantly induced by photoperiod. The photoperiod varies with latitude and has led to local adaptation in the photoperiodic induction of diapause in many insects. To understand the rapid evolution of the photoperiodic threshold, it is important to investigate and understand the underlying genetic mechanisms. In the present study, the genetic basis of photoperiodic diapause induction is investigated in the green-veined white butterfly Pieris napi (Lepidoptera, Pieridae) by assaying diapause induction in a range of conditions for a Swedish and Spanish population. Furthermore, the inheritance of diapause induction is assessed in reciprocal F1 hybrids and backcrosses between the two populations. The southern population shows a clear photoperiodic threshold determining diapause or direct development, whereas the northern populations show a high incidence of diapause, regardless of photoperiod. The hybrid crosses reveal that the inheritance of diapause induction is strongly sex-linked, and that diapause incidence in the genetic crosses is highly dependent on photoperiod. This emphasizes the importance of assaying a range of conditions in diapause inheritance studies. The results indicate a strongly heritable diapause induction with a major component on the Z-chromosome, as well as a minor effect of the autosomal background.

Place, publisher, year, edition, pages
2017. Vol. 42, no 3, 257-265 p.
Keyword [en]
Diapause induction, inheritance, Lepidoptera, photoperiodic response, sex-linked
National Category
Biological Sciences
Identifiers
URN: urn:nbn:se:su:diva-147002DOI: 10.1111/phen.12194ISI: 000409281600008OAI: oai:DiVA.org:su-147002DiVA: diva2:1145624
Available from: 2017-09-29 Created: 2017-09-29 Last updated: 2017-09-29Bibliographically approved

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Pruisscher, PeterLarsdotter-Mellström, HelenaNylin, SörenWheat, Christopher W.Gotthard, Karl
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