Knowledge on the genetic diversity among BMSB populations is scarce but is essential to understand the patterns of colonization and invasion history of local populations. BMSB is a polyphagous insect pest and causes significant economic losses to agriculture worldwide. Our study provided a comprehensive overview on the global haplotypes distribution thus expanding the existing knowledge on BMSB genetic diversity that potentially could play an important role in formulating feasible pest management strategies.īrown marmorated stink bug (BMSB), Halyomorpha halys (Hemiptera: Pentatomidae) is native to East Asia but has invaded many countries in the world. Moreover, we observed two genetic clusters in the invasive populations that are formed during different invasion events. The study also revealed three ancestral lines and most of the novel haplotypes were evolved from them. The analysis indicated that multiple invasions of BMSB occurred in Europe and the USA. This study revealed that the haplotype diversity of the BMSB populations was high in those two studied countries where BMSB is native to (China and Japan) but low in those countries which have been invaded by the species. Analysis of molecular variance (AMOVA) suggested that significant genetic difference exists among the BMSB populations from China, Japan, and the invasive countries. In comparison, the Fu's Fs values were positive for the populations from Austria, Serbia, and Slovenia, revealing a potential population bottleneck. For the BMSB populations from the invaded countries, the Fu's Fs values were negative for populations from Chile, Georgia, Hungary, Italy, Romania, Turkey, and USA, indicating that those populations are under demographic expansion. The haplotype diversity (Hd) and nucleotide diversity (π) were high while the neutrality (Fu's Fs) values were negative for the BMSB populations in the native countries, China, and Japan. Of these, H1h1 was the predominant haplotype. In total, 51 COI and 29 COII haplotypes of BMSB were found, which formed 59 combined haplotypes (5 reported and 54 novel). In this study, two mitochondrial genes, Cytochrome c oxidase I (COI) and Cytochrome c oxidase II (COII) were used to explore the genetic diversity among 463 BMSB individuals collected from 12 countries. As a high-risk pest for many countries, including New Zealand, it is important to explore its genetic diversity to enhance our knowledge and devise management strategies for BMSB populations.

In the past decade, the brown marmorated stink bug (BMSB), Halyomorpha halys (Hemiptera: Pentatomidae) has caused extensive damage to global agriculture. halys in the context of a warming climate, and potential to emerge as a serious crop pest in the Midwest U.S. We discuss the implications of our findings for understanding population growth rates for H. A Ratkowsky model predicted rmwas maximized (0.0899) at 27.5 ☌. Given these findings, we assessed the effect of temperature on the intrinsic rate of increase (rm), the life table parameter that integrates the effects of temperature on development, survival, and reproduction. Mean generation time for the Minnesota population was minimized at 30 ☌, while survival and fecundity were maximized at 27 and 23 ☌, respectively. The Minnesota population developed faster and survived at higher rates relative to a population that had previously established in Pennsylvania, USA. We examined the effect of selected constant temperatures on immature development and survival (15–39 ☌), and adult reproduction longevity (17–36 ☌) of H. halys at the current limit of its northern range in North America. All salient life history parameters were estimated to better understand the population growth potential of H. An age-stage, two-sex life table was therefore developed to analyze fundamental demographic features such as development, survival, and reproduction of a Minnesota-acclimated population of the invasive brown marmorated stink bug (Halyomorpha halys), in the north central USA.

Temperature is a critical single factor influencing insect population dynamics, and is foundational for improving our understanding of the phenology of invasive species adapting to new agroecosystems or in the process of range expansion.

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