caa a22 4500 467889694 CHVBK 20180406152745.0 cr unu---uuuuu 170328e20060901xx s 000 0 eng 10.1007/s00049-006-0343-y doi (NATIONALLICENCE)springer-10.1007/s00049-006-0343-y Effects of increased content of leaf surface flavonoids on the performance of mountain birch feeding sawflies vary for early and late season species [Elektronische Daten] [Maria Lahtinen, Lauri Kapari, Erkki Haukioja, Kalevi Pihlaja] Summary.: The effects of artificially added flavonoid aglycones to birch leaf surfaces on the larval performance of six species of leaf-chewing sawflies were investigated. Significantly negative effects of increased contents of both total flavonoid and individually fed flavonoid compounds were found for the larval performance of certain mid to late and late, but not early season, sawfly species. Species-specific variations in the quantity of faecal flavonoid glycosides, which were examined to investigate whether effective glycosylation of foliar flavonoid aglycones in larvae correlated with varying tolerance to these compounds, also yielded significant species-specific differences between early and late season species. The results suggest seasonal adaptations in host plant use by sawflies feeding on mountain birch, such that phenologically earlier species are better adapted to coping with leaf surface flavonoid aglycones, which occur in the highest concentrations in young leaves. Birkhäuser Verlag, Basel, 2006 Birch nationallicence sawfly larvae nationallicence flavonoid aglycones nationallicence Lahtinen Maria Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, FI-20014, Turku, Finland aut Kapari Lauri Section of Ecology, Department of Biology, University of Turku, FI-20014, Turku, Finland aut Haukioja Erkki Section of Ecology, Department of Biology, University of Turku, FI-20014, Turku, Finland aut Pihlaja Kalevi Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, FI-20014, Turku, Finland aut CHEMOECOLOGY Birkhäuser-Verlag; http://www.birkhauser.ch 16/3(2006-09-01), 159-167 0937-7409 16:3<159 2006 16 49 https://doi.org/10.1007/s00049-006-0343-y text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.1007/s00049-006-0343-y text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Lahtinen Maria Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, FI-20014, Turku, Finland aut NATIONALLICENCE 700 1- Kapari Lauri Section of Ecology, Department of Biology, University of Turku, FI-20014, Turku, Finland aut NATIONALLICENCE 700 1- Haukioja Erkki Section of Ecology, Department of Biology, University of Turku, FI-20014, Turku, Finland aut NATIONALLICENCE 700 1- Pihlaja Kalevi Laboratory of Organic Chemistry and Chemical Biology, Department of Chemistry, University of Turku, FI-20014, Turku, Finland aut NATIONALLICENCE 773 0- CHEMOECOLOGY Birkhäuser-Verlag; http://www.birkhauser.ch 16/3(2006-09-01), 159-167 0937-7409 16:3<159 2006 16 49 Metadata rights reserved Springer special CC-BY-NC licence nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-springer