Sökning: "Philipp Lehmann"

Hittade 3 avhandlingar innehållade orden Philipp Lehmann.

  1. 1. Life history evolution during a climate-driven butterfly range expansion

    Författare :Mats Ittonen; Karl Gotthard; Philipp Lehmann; Christopher Wheat; Sarah Diamond; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; climate change; diapause; genomics; insect cold tolerance; life cycle; local adaptation; parallel evolution; photoperiodism; reciprocal transplant; zoologisk ekologi; Animal Ecology;

    Sammanfattning : Climate change pushes species polewards and upwards – as temperatures rise, species move to areas that were previously too cold for them. During range expansions, species encounter unfamiliar environmental conditions, which may require evolutionary adaptation, but expanding populations may often be hampered by their genetic and demographic properties. LÄS MER

  3. 2. Unraveling the regulatory mechanisms of pupal diapause termination

    Författare :Philip Süess; Philipp Lehmann; Christian Wegener; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Diapause; diapause termination; prothoracicotropic hormone; ecdysone; thermal performance; Functional Zoomorphology; funktionell zoomorfologi;

    Sammanfattning : Diapause is an essential part of many insect’s life cycle and is a developmental halt induced by environmental cues in advance of deteriorating conditions. Insects typically enter diapause to avoid unfavorable environmental conditions like low temperatures, poor food quality and the absence of conspecifics. LÄS MER

  4. 3. Temperature variation in time and space, and its effects on insects

    Författare :Loke von Schmalensee; Philipp Lehmann; Gotthard Karl; Michael Angilletta; Stockholms universitet; []
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; temperature variation; thermal performance; insects; Lepidoptera; thermal adaptation; thermal ecology; microclimate; seasonality; zoologisk ekologi; Animal Ecology;

    Sammanfattning : Nature is variable. Unfortunately, compressed representations of this variable world, like averages, are often lossy and insufficient for ecological purposes. This is particularly true for temperature variation, which organisms typically respond to in a nonlinear way. LÄS MER