Responses of Black Vine Weevil Adults Fed Foliage from Genotypes of Strawberry, Red Raspberry, and Red Raspberry-Blackberry Hybrids1

Abstract

Abstract Adults of the black vine weevil, Otiorhynchus sulcatus (F.), consistently responded with less weight gains, shorter preoviposition periods, and more eggs when fed foliage from genotypes of strawberry than of Rubus species. Among 8 strawberry genotypes tested, the lowest number of fertile eggs were produced from feeding on the cultivar ‘Totem’ and the most from the British Columbia selection 70-20R-15. Among 8 red raspberry cultivars, significant differences were observed in preoviposition periods periods and in both total and fertile eggs laid. Longest preoviposition periods were from feeding on ‘Leo’ and ‘Glen Prosen’; intermediate from ‘Glen Clova’, ‘Mailing Jewel’, and ‘Willamette’; and shortest from ‘Haida’, ‘Chilcotin’, and ‘Meeker’. In other Rubus species, loganberry was similar to ‘Leo’ and ‘Glen Prosen’, while the R. idaeus strigosus selection, Kinburne, gave a preoviposition period as long as loganberry. Since both ‘Leo’ and ‘Glen Prosen’ are Rubus occidentalis derivatives, this parentage might be of value for future breeding for black vine weevil resistance in red raspberry.