Studies on the Ecology and Conservation of Butterflies in Europe

0098417 - BC 2008 RIV BG eng M - Monography Chapter
Čížek, Lukáš - Fric, Zdeněk - Konvička, Martin
Does voltinism in temperate insect herbivores depend on defences of their host plant?
[Závisí počet generací herbivorního hmyzu na obranných strategiích hostitelských rostlin?]
Studies on the Ecology and Conservation of Butterflies in Europe. Sofia: Pensoft Publishers, 2005 - (Kühn, E.; Feldmann, R.; Thomas, J.; Settele, J.), s. 37-37. ISBN 954-642-247-9
Institutional research plan: CEZ:AV0Z50070508
Keywords : insect herbivores
Subject RIV: EH - Ecology, Behaviour

According to theories of plant antiherbivore defences, apparent plants utilise quantitative protective compounds, whose efficiency increases with ageing of foliage. In contrast, unapparent plants utilise qualitative chemicals, whose protective efficiency remains approximately constant during leaf age. It should follow that leaf-chewing insects feeding on apparent plants should synchronise hatching with appearance of fresh leaves. Since fresh leaves are typically available early in season in temperate environments, such insects, including butterfly larvae, should be constrained in annual numbers of generations. In contrast, no such constraint should apply to butterfly larvae feeding on unapparent, qualitatively protected plants. We tested the hypothesis using European butterflies, using both classical regressions and regressions controlled for phylogeny via independent contrasts.

Pozorování závislosti počtu generací herbivorního hmyzu na obranných strategiích hostitelských rostlin.
Permanent Link: http://hdl.handle.net/11104/0157335