Movement, colonization, and establishment success of a planthopper of prairie potholes, Delphacodes scolochloa (Hemiptera: Delphacidae)

摘要: 1. Movement, and particularly the colonisation of new habitat patches, remains one least known aspects life history ecology vast majority species. Here, a series experiments was conducted to rectify this problem with Delphacodes scolochloa Cronin & Wilson, wing-dimorphic planthopper North American Great Plains. 2. The movement brachypterous macropterous planthoppers within among host-plant patches quantified. Also, an experiment assess whether propagule size (i.e. number colonists) influenced presence adults or eggs over time, population growth rate (R0), abundance impact egg parasitoid. 3. Delphacodes well described by simple diffusion model. As expected, brachypters were less dispersive than macropters – mean displacement distances three times greater for (2.8 m vs. 8.1 m per day). 4. Number colonists vacant increased increasing patch (both wing forms) decreased isolation (brachypters only). At scale individual potholes (<38 m), dispersal limited. 5. Establishment success strongly size. An Allee effect constrained establishment populations, but low not result mate limitations natural enemies parasitoids).6. These data reveal important insights regarding spatial structure spread D. scolochloa.