Year: 2014
Type: article
Abstract: The rice stink bug, O ebalus pugnax ( F abricius) ( H emiptera: P entatomidae: C arpocorini), though graminaceous, discriminates among its numerous host grass species. This could represent a feeding preference, it could be related to host suitability for growth and development. To clarify the role of host grass discrimination, two laboratory studies were conducted: (1) free‐choice tests to evaluate preferences of O . pugnax among 11 wild host grass species found in three rice‐producing counties of the central Mississippi Delta ( MS , USA ), and (2) no‐choice tests to evaluate the impact of rice ( O ryza sativa L .), junglerice [ E chinochloa colona ( L .) Link], and dallisgrass ( P aspalum dilatatum P oir.) (all P oaceae), on the development of O . pugnax from second instar to adult. In the free‐choice test, four experiments were conducted, each with four sets of host grass species and observed 1, 2, 4, 8, and 16 h after release in cages. Approximately 4 h was necessary for O . pugnax to settle on preferred host grasses. O ebalus pugnax showed a feeding preference for junglerice over all 10 other grass species. B ahiagrass, P aspalum notatum F lueggé, was the least preferred. The no‐choice tests showed significant effect of host grass species on O . pugnax mean development time of nymphal survival to adults. Survival of nymphs was lower and mean development time was longer on dallisgrass compared to rice and junglerice. Knowledge of O . pugnax rate of growth and development on host grasses could be useful in the future development of rice integrated pest management strategies.
DOI: 10.1111/eea.12208
Authors: G.A. Awuni, J. Gore, D. Cook, J.A. Bond, F.R. Musser, C.A. Adams
Institution: Mississippi State University
Language: English
Topic: Hemiptera Insect Studies
Domain: Life Sciences
SDG: Zero hunger
Open Access status: hybrid
Estimated APC paid: $4,430
OpenAlex ID: W2034534583