Population dynamics of the diamondback moth, Plutella xylostella (L.), in northern China: the effects of migration, cropping patterns and climate

Abstract

Based on climate and using the timing of the initial peak in pheromone trap captures as a biofix, the timing of emergence of the next generation can be forecast, and more effective scouting and regional management strategies against this pest can be developed. © 2018 Society of Chemical Industry.

Management and population dynamics of diamondback moth (Plutella xylostella): planting regimes, crop hygiene, biological control and timing of interventions

“…Above all the interaction between crop age and DBM movement warrant analysis, as does the source and timing of immigration to population build-up. We recently showed using our deme model that immigration and hence the initial population size could account for observed population changes and phenology in northern China (Zhu et al , 2018). Including better descriptions of plant–insect interactions into the deme framework may better capture the details of local population changes at an individual field scale.…”

“…Using DYMEX modelling software (Maywald et al , 2007), we built a cohort-based discrete-time model, driven by daily maximum and minimum temperatures and rainfall, that captured the age-structured population dynamics of DBM at representative locations, with year-round cropping and threshold-based insecticide applications throughout China (Li et al , 2016 a ; Zhu et al , 2018). DBM population dynamics showed strong climatic effects; the species was, on average, more common in southern locations than in northern locations, reflecting the time available for population increase (Zalucki & Furlong, 2008, 2011; Li et al , 2012).…”

A new pest management strategy: transforming a non‐host plant into a dead‐end trap crop for the diamondback moth Plutella xylostella L.

“…Larvae of DBM mainly feed on the host, which causes economic losses in agricultural production, while the adults mainly spread and complete population reproduction. After emergence, DBM adults can fly long distances to search for host plants 23–25 . Therefore, reducing DBM oviposition on host crops is a good control strategy.…”

Survival of diamondback moth eggs and neonates: the effects of rainfall

“…DBM may cause crop losses as high as 50 -100% (Magallona 1986;Sagenmueller and Rose 1986). Annual management costs and lost production may be as high as US$4 billion to US$5 billion to the world economy (Zhu et al 2018;Zalucki et al 2012b).…”

“…The excessive application of insecticides affects the biological control agents of DBM resulting in the resurgence of this pest (Furlong et al 2008;Furlong et al 2004a;Furlong et al 2004b;Lim 1986). In addition, DBM can migrate and colonize favourable crops before natural enemies (Zhu et al 2018;Schellhorn et al 2008;Mo et al 2003). As with most insects, it is very difficult to forecast and interpret its abundance and population dynamics as there are many influencing factors (Zhu et al 2018;Li et al 2016a;Muthuthantri et al 2010;Schellhorn et al 2008;Zalucki and Furlong 2005;Yonow et al 2004).…”