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Inter- and intrafield distribution of cereal leaf beetle species (coleoptera : chrysomelidae) in Belgian winter wheat

(2019) ENVIRONMENTAL ENTOMOLOGY. 48(2). p.276-283
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Abstract
Cereal leaf beetles (CLBs), a group of chrysomelid beetles of the genus Oulema (Coleoptera: Chrysomelidae), are well-known pest insects of small-grain cereals in many countries of the Northern hemisphere. Due to the small differences in morphology of species within this genus, classification up to species level remains a challenging task. Since an accurate view of species composition is important for developing targeted control strategies, the goal of this study was to unravel the Oulema species composition in Flanders' wheat fields. During three subsequent years at a series of different fields, Oulema species were collected and classified up to species level (2016: 28 fields, 2017: 30 fields, and 2018: 23 fields). This study reveals that the population consists of four different species: Oulema melanopus, Oulema duftschmidi, and Oulema obscura were most frequently encountered, while Oulema rufocyanea was only marginally present. Furthermore, the population was highly dynamic, as the population share of each species varied between different growing seasons and between the various sampling events within each season. The distance from the field edge had a minor influence on the species composition, but the abundance of beetles increased with the distance to the field edge. A discriminant analysis revealed that based on the measurements of various body parts, an accurate classification up to species level is possible. In conclusion, we observed that the population densities fluctuated within and between years, resulting in variable incidence of CLB in winter wheat fields in the Flanders region.
Keywords
OULEMA-MELANOPUS L, DYNAMICS, L., Oulema melanopus, population dynamics, morphometrics, sweep net, monitoring

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MLA
Van de Vijver, Elias, et al. “Inter- and Intrafield Distribution of Cereal Leaf Beetle Species (Coleoptera : Chrysomelidae) in Belgian Winter Wheat.” ENVIRONMENTAL ENTOMOLOGY, vol. 48, no. 2, 2019, pp. 276–83.
APA
Van de Vijver, E., Landschoot, S., Van Roie, M., Temmerman, F., Dillen, J., De Ceuleners, K., … Haesaert, G. (2019). Inter- and intrafield distribution of cereal leaf beetle species (coleoptera : chrysomelidae) in Belgian winter wheat. ENVIRONMENTAL ENTOMOLOGY, 48(2), 276–283.
Chicago author-date
Van de Vijver, Elias, Sofie Landschoot, Martijn Van Roie, Femke Temmerman, Jill Dillen, Kevin De Ceuleners, Guy Smagghe, Bernard De Baets, and Geert Haesaert. 2019. “Inter- and Intrafield Distribution of Cereal Leaf Beetle Species (Coleoptera : Chrysomelidae) in Belgian Winter Wheat.” ENVIRONMENTAL ENTOMOLOGY 48 (2): 276–83.
Chicago author-date (all authors)
Van de Vijver, Elias, Sofie Landschoot, Martijn Van Roie, Femke Temmerman, Jill Dillen, Kevin De Ceuleners, Guy Smagghe, Bernard De Baets, and Geert Haesaert. 2019. “Inter- and Intrafield Distribution of Cereal Leaf Beetle Species (Coleoptera : Chrysomelidae) in Belgian Winter Wheat.” ENVIRONMENTAL ENTOMOLOGY 48 (2): 276–283.
Vancouver
1.
Van de Vijver E, Landschoot S, Van Roie M, Temmerman F, Dillen J, De Ceuleners K, et al. Inter- and intrafield distribution of cereal leaf beetle species (coleoptera : chrysomelidae) in Belgian winter wheat. ENVIRONMENTAL ENTOMOLOGY. 2019;48(2):276–83.
IEEE
[1]
E. Van de Vijver et al., “Inter- and intrafield distribution of cereal leaf beetle species (coleoptera : chrysomelidae) in Belgian winter wheat,” ENVIRONMENTAL ENTOMOLOGY, vol. 48, no. 2, pp. 276–283, 2019.
@article{8657401,
  abstract     = {{Cereal leaf beetles (CLBs), a group of chrysomelid beetles of the genus Oulema (Coleoptera: Chrysomelidae), are well-known pest insects of small-grain cereals in many countries of the Northern hemisphere. Due to the small differences in morphology of species within this genus, classification up to species level remains a challenging task. Since an accurate view of species composition is important for developing targeted control strategies, the goal of this study was to unravel the Oulema species composition in Flanders' wheat fields. During three subsequent years at a series of different fields, Oulema species were collected and classified up to species level (2016: 28 fields, 2017: 30 fields, and 2018: 23 fields). This study reveals that the population consists of four different species: Oulema melanopus, Oulema duftschmidi, and Oulema obscura were most frequently encountered, while Oulema rufocyanea was only marginally present. Furthermore, the population was highly dynamic, as the population share of each species varied between different growing seasons and between the various sampling events within each season. The distance from the field edge had a minor influence on the species composition, but the abundance of beetles increased with the distance to the field edge. A discriminant analysis revealed that based on the measurements of various body parts, an accurate classification up to species level is possible. In conclusion, we observed that the population densities fluctuated within and between years, resulting in variable incidence of CLB in winter wheat fields in the Flanders region.}},
  author       = {{Van de Vijver, Elias and Landschoot, Sofie and Van Roie, Martijn and Temmerman, Femke and Dillen, Jill and De Ceuleners, Kevin and Smagghe, Guy and De Baets, Bernard and Haesaert, Geert}},
  issn         = {{0046-225X}},
  journal      = {{ENVIRONMENTAL ENTOMOLOGY}},
  keywords     = {{OULEMA-MELANOPUS L,DYNAMICS,L.,Oulema melanopus,population dynamics,morphometrics,sweep net,monitoring}},
  language     = {{eng}},
  number       = {{2}},
  pages        = {{276--283}},
  title        = {{Inter- and intrafield distribution of cereal leaf beetle species (coleoptera : chrysomelidae) in Belgian winter wheat}},
  url          = {{http://dx.doi.org/10.1093/ee/nvz002}},
  volume       = {{48}},
  year         = {{2019}},
}

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