Table 2.

Mean ± SEM eggs laid per female, percentage of females ovipositing, preovipositional period (POP), male longevity, and female longevity for adult elm leaf beetles (Xanthogaleruca luteola) feeding on leaves of Ulmaceae taxa.

BiotypeEggs laid per female% females ovipositingPOP (days)M–longz (days)F–longz (days)
U. alata15 ± 3.0 ay15 ± 0.1 a2 ± 0.7 a4 ± 0.2 a5 ± 0.2 ab
U. americana (diploid form)0 ± 0.0 a0 ± 0.0 a——7 ± 0.6 ab7 ± 0.6 ab
U. americana ‘Moline’0 ± 3.0 a0 ± 0.0 a——3 ± 0.3 a2 ± 0.3 a
U. canescens35 ± 18.7 b40 ± 0.2 ab3 ± 1.3 ab5 ± 1.0 ab7 ± 1.0 ab
U. foliaceae4 ± 2.5 a15 ± 0.1 a1 ± 0.4 a4 ± 0.3 a5 ± 0.3 ab
U. japonica × U. americana11 ± 7.0 a20 ± 0.1 a1 ± 0.5a4 ± 0.8 a4 ± 0.8 a
U. japonica × U. pumila (columnar selection)14 ± 8.6 a17 ± 0.1 a2 ± 0.8 a10 ± 0.6 b10 ± 0.6b
U. japonica × U. wilsoniana (Arnold arboretum selection)0 ± 0.0 a0 ± 0.0 a——3 ± 0.4 a3 ± 0.4 a
U. japonica × U. wilsoniana (single stem selection)6 ± 6.2.0 a10 ± 0.1 a1 ± 0.6 a5 ± 1.0 ab5 ± 1.0 ab
U. japonica-wilsoniana × U. rubra3 ± 2.60 a5 ± 0.1 a1 ± 0.5 a5 ± 0.7 a5 ± 0.7 ab
U. pumila (standard)48 ± 11.1 b67 ± 0.1 b4 ± 0.7 b7 ± 1.0 ab10 ± 1.0 b
U. pumila × U. americana29 ± 20.2 ab50 ± 0.1 ab3 ± 0.9 ab6 ± 1.2 ab6 ± 1.2 ab
U. wilsoniana-980 ± 0.0 a0 ± 0.0 a——4 ± 0.3 a4 ± 0.3 a
U. ‘Morton Stalwart’ Commendation™43 ± 21.8 b26 ± 0.2 a6 ± 1.3 b4 ± 0.5 a5 ± 0.5 ab
U. ‘Morton Plainsman’ Vanguard™ × U. americana (diploid form)14 ± 13.1 a24 ± 0.1 a2 ± 1.3 a5 ± 0.8 a6 ± 0.8 ab
Zelkova serrata0 ± 0.0 a0 ± 0.0 a——3 ± 0.2 a3 ± 0.2 a
Significance<0.001<0.001<0.008<0.0001<0.0001

  • ↵z M-long = male longevity; F-long = female longevity.

  • ↵y Values within columns followed by the same letter are not significantly different [P = 0.05; Student-Newman-Keuls (SNK) multiple comparison test].