Abstract
The nematine sawfly Euura mucronata Hartig (Hymenoptera: Tenthredinidae) induces galls in the buds of over 30 willow species across the Holarctic region. This extensive host range is surprising, since the other Euura gallers are mostly monophagous; thus, the feeding habit of E. mucronata would represent a switch from monophagy to extreme polyphagy. Previous morphological studies have divided E. mucronata into separate species, but the feeding ranges of these species are unknown, and it is even doubtful whether multiple species really exist. To study whether or not E. mucronata consists of cryptic host-associated sibling species, an allozyme study was conducted using gallers collected from six willow species occurring in northern Fennoscandia. Electrophoretic data from seven variable enzyme loci show that: (1) "E. mucronata" probably comprises at least three species with restricted host ranges, but the species may not be completely reproductively isolated from each other; (2) the pattern of host use is not explained by the phylogeny of willows; (3) the pattern of host use is not concordant with the overall chemical similarity of the hosts; and (4) simple allopatric speciation does not appear to explain the host associations. Con...Continue Reading
References
Jun 1, 1992·Genetics·L ExcoffierJ M Quattro
Aug 1, 1990·Heredity·R K Butlin
Apr 11, 1997·Science·J X Becerra
Jan 15, 2000·American Journal of Botany·T AzumaH Ohashi
Jan 29, 2000·Heredity·S H Berlocher
Aug 11, 2000·Evolution; International Journal of Organic Evolution·T NymanH Roininen
Oct 26, 2000·Nature·K E FilchakJ L Feder
Nov 15, 2000·Proceedings of the National Academy of Sciences of the United States of America·T Nyman, R Julkunen-Tiitto
Apr 27, 2002·Systematic Biology·P MardulynJ M Pasteels
Nov 1, 1983·Genetics·J ReynoldsC C Cockerham
Jul 1, 1978·Genetics·M Nei
Sep 1, 1991·Trends in Ecology & Evolution·C MitterD J Futuyma
Sep 1, 1994·Journal of Chemical Ecology·J KolehmainenJ Tahvanainen
Jul 1, 1991·Oecologia·H Roininen
Mar 1, 1986·Evolution; International Journal of Organic Evolution·Kareen B Sturgeon, Jeffry B Mitton
Nov 1, 1984·Evolution; International Journal of Organic Evolution·B S Weir, C Clark Cockerham
Feb 1, 1993·Evolution; International Journal of Organic Evolution·Heikki RoininenRiitta Julkunen-Tiitto
Apr 1, 1998·Evolution; International Journal of Organic Evolution·Tommi NymanJukka A Vuorinen
Jan 1, 1989·Evolution; International Journal of Organic Evolution·William R Rice
Citations
Aug 30, 2012·Bulletin of Entomological Research·V CaronP Sunnucks
Aug 30, 2008·Parasitology·M A Calero-Torralbo, F Valera
Jan 20, 2006·BMC Evolutionary Biology·Niklas JanzNiklas Wahlberg
Jan 30, 2007·BMC Biology·Michael J McLeishMichael P Schwarz
Sep 10, 2014·Biodiversity Data Journal·Andrew D ListonLaurence Livermore
Sep 5, 2015·Molecular Ecology·Tommi NymanHeikki Roininen
May 1, 2007·Molecular Phylogenetics and Evolution·M J McLeishM P Schwarz
Nov 25, 2003·Journal of Evolutionary Biology·D G Miller, B Crespi
Sep 25, 2003·Evolution; International Journal of Organic Evolution·Carlos Lopez-VaamondeJames M Cook
Oct 5, 2006·Evolution; International Journal of Organic Evolution·Tommi NymanVeli Vikberg
Mar 30, 2010·Journal of Evolutionary Biology·A M Dickey, R F Medina
Nov 19, 2005·Phytochemistry·Tommi Nyman, Riitta Julkunen-Tiitto
Jan 1, 2015·PloS One·Sanna A LeppänenTommi Nyman
Oct 26, 2002·Heredity·T NymanH Roininen
Nov 4, 2005·Scandinavian Journal of Public Health·Eva VingårdAke Nygren
Jun 29, 2018·Psychological Medicine·Ana Pérez-VigilDavid Mataix-Cols