5 Papers
83 Citations
R. Morton is an academic researcher from Commonwealth Scientific and Industrial Research Organisation. The author has contributed to research in topics: Parasitoid & Biological pest control. The author has an hindex of 5, co-authored 5 publications.
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Papers
Oviposition preferences of a hymenopterous parasite for certain instars of its aphid host
TL;DR: When the seven available instars and morphs of the aphid were exposed together to oviposition by its hymenopterous parasite, the numbers of eggs laid were highest in the nymphal instars, particularly in third instar hosts.
64
The biology of two Eretmocerus spp. (Haldeman) and three Encarsia spp. Forster and their potential as biological control agents of Bemisia tabaci biotype B in Australia
TL;DR: The performance, as measured by daily rate of parasitism and total parasitism, of five aphelinid species found in Australia parasitising Bemisia tabaci were compared on cotton, hibiscus, rockmelon, soybean and tomato and found that more whiteflies were parasitised when cotton was the source host or rockmelon the test host.
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Time-related rejection of parasitised hosts in the aphid parasitoid, Aphidius ervi.
TL;DR: An experimental design capable of detecting temporal patterns in host discrimination of solitary parasitoids is presented and it is demonstrated that there are statistically significant changes in the patterns of egg distribution in aphid hosts held for intervals between 1 and 48 h between parasitisation.
12
Distribution of superparasitization in the aphid parasite, Aphidius sonchi
Liu Shu-sheng,R. Morton +1 more
TL;DR: The results suggest that female A. sonchi do not avoid ovipositing in already parasitized hosts under these conditions, and that the parasites laid large numbers of eggs into a small proportion of the hosts.
10
Primary sex-ratio and differential progeny survivorship in solitary haplo-diploid parasitoids
TL;DR: It is suggested that there is a constraint to the evolution of the facultative control of primary sex‐ratio in parasitoids attacking larval stages as a result of the uncertainty of future host resource acquisition rates.