Publications
| does escape to enemy-free space explain host specialization in two closely related leaf-feeding beetles (coleoptera: chrysomelidae)? | this paper examines the role of predation and parasitism in the host specialization of two chrysomelid beetles that are monophagous on different species of asteraceae. ophraella notulata and o. slobodkini are sister taxa that feed on iva frutescens and ambrosia artemisiifolia respectively. ambrosia is the purported ancestral host plant for this species pair. the question addressed is whether there is evidence that escape to enemy-free space may influence the host specialization of o. notulata on ... | 1997 | 28307379 |
| apparent transgenerational effects of host plant in the leaf beetle ophraella notulata (coleoptera: chrysomelidae). | the natural host of ophraella notulata is iva frutescens (asteraceae); its close relative feeds on a related plant, ambrosia artemisiifolia. we reared beetles on both plants, obtained progeny from the four possible crosses (two sexes x two parental hosts), and reared the progeny on both plant species. survival to the imaginal stage of progeny reared on iva varied with both maternal and paternal host. hatchling feeding response to both plants showed a maternal host x paternal host interaction. co ... | 1993 | 28313652 |