Life table and functional and numerical responses ofAphelinus paramali(Zehavi and Rosen) (Hymenoptera: Aphelinidae) reared onAphis gossypii Glover (Hemiptera: Aphididae)

Bayram, Yunus

doi:10.1603/ice.2016.91902

Cited by 1 publication

(1 citation statement)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…certus did not show a significant preference for any individual host developmental stage. Although many Aphelinus species readily accept all host stages, there is broad variability in host-stage preference [65–68]. While Lin and Ives [16] showed that preference for older host stages produces the lowest equilibrium host densities, we found that the relationship between host-stage preference and peak host densities produced a different result in our nonequilibrium analysis.…”

Section: Discussionmentioning

confidence: 56%

A matrix model describing host–parasitoid population dynamics: The case of Aphelinus certus and soybean aphid

Miksanek

Heimpel

2019

PLoS ONE

View full text Add to dashboard Cite

Integrating elements from life tables into population models within a matrix framework has been an underutilized method of describing host–parasitoid population dynamics. This type of modeling is useful in describing demographically-structured populations and in identifying points in the host developmental timeline susceptible to parasitic attack. We apply this approach to investigate the effect of parasitism by the Asian parasitoid Aphelinus certus on its host, the soybean aphid ( Aphis glycines ). We present a matrix population model with coupled equations that are analogous to a Nicholson–Bailey model. To parameterize the model, we conducted several bioassays outlining host and parasitoid life history and supplemented these studies with data obtained from the literature. Analysis of the model suggests that, at a parasitism rate of 0.21 d −1 , A . certus is capable of maintaining aphid densities below economically damaging levels in 31.0% of simulations. Several parameters—parasitoid lifespan, colonization timeline, host developmental stage, and mean daily temperature—were also shown to markedly influence the overall dynamics of the system. These results suggest that A . certus might provide a valuable service in agroecosystems by suppressing soybean aphid populations at relatively low levels of parasitism. Our results also support the use of A . certus within a dynamic action threshold framework in order to maximize the value of biological control in pest management programs.

show abstract

Section: Discussionmentioning

confidence: 56%