Parasitoids of cereal leaf beetle, Oulema gallaeciana (Heyden, 1879)

Jeloková, M.; Gallo, Ján

doi:10.17221/1260-pps

Cited by 7 publications

(3 citation statements)

References 3 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…We still know little about the precise mechanisms determining body size in A. flavipes , although such knowledge would be crucial for their proper use as biological control agent against the severe pests, cereal leaf beetles (Horváth & Szabolcs, ; Jeloková & Gallo, ; Kimberling, ). However, for the first time, we simultaneously tested more factors, which may affect the body size of A. flavipes .…”

Section: Discussionmentioning

confidence: 99%

Reproductive strategy as a major factor determining female body size and fertility of a gregarious parasitoid

Samková

Hadrava

Skuhrovec

et al. 2019

J Applied Entomology

View full text Add to dashboard Cite

The generally known “adult size‐fitness hypothesis” (ASFH) is applied to the gregarious parasitic wasp Anaphes flavipes (Foerster, 1841) (Hymenoptera: Mymaridae). ASFH is dependent on the reproductive strategy of the mother, which means the larger females have more offspring compared to smaller females. Two main factors, the mother's body size and food quantity received during larval development, can affect the body size of the offspring. For the first time, we present a study on the relative effect of both factors on fitness of the same species, wasp A. flavipes. Our data confirmed that females of A. flavipes with larger body sizes had more offspring compared to smaller ones. At the same time, mother's body size does not seem to affect the body size of the offspring. The other studied factor, quantity of food received during larval development, can be influenced by reproductive strategy (number of parasitoids developing in one host egg), host quality or the duration of development. We found only the reproductive strategy to have a statistically significant effect on body size. We demonstrated that the variable reproductive strategy (VRS) of wasp A. flavipes causes a plasticity in body size and future number of offspring. The generally known “trade‐off” scheme (more small offspring or fewer bigger offspring) does not apply to A. flavipes, because their large females have more offspring and it is their reproductive strategy that determines body size.

show abstract

Section: Discussionmentioning

confidence: 99%

Reproductive strategy as a major factor determining female body size and fertility of a gregarious parasitoid

Samková

Hadrava

Skuhrovec

et al. 2019

J Applied Entomology

View full text Add to dashboard Cite

show abstract

“…Hymenopteran parasitoids play a very important role in the biological control of CLBs (Philips et al 2011;Kher et al 2014;Roberts 2016) and their spillover can be expected to occur at smaller scales. Especially Necremnus leucarthros could be an important natural enemy of the CLB (Jeloková and Gallo 2008) and is one of the most common parasitoid species in Hungary (Szabolcs and Horváth 1991). Laboratory feeding preference trials (Meindl et al 2001;Kheirodin et al 2019) and molecular studies on field collected predators (Kheirodin et al 2020a, b) demonstrated that carabid beetles, lady beetles (Coccinellidae), predatory bugs (Nabidae) and spiders are prominent natural enemies of CLB larvae, adults and also of eggs.…”

Section: Discussionmentioning

confidence: 99%

Linear woody landscape elements may help to mitigate leaf surface loss caused by the cereal leaf beetle

et al. 2020

View full text Add to dashboard Cite

Context Woody semi-natural habitats serve as permanent habitats and hibernation sites for natural enemies and, through spillover processes, they play an important role in the biological control of insect pests. However, this service is also dependent on the amount and configuration of the dominating woody habitat types: linear landscape elements (hedgerows, shelterbelts), and more evenly extended plantations. Relating natural enemy action to the landscape context can help to identify the effect of woody habitats on biological control effectiveness. Objectives In the Central European agricultural landscapes such as in the Hungarian lowlands, where our study took place, woody linear elements are characterised by high, while woody areal elements, mostly plantations, by low biological and structural diversity. In this study, we aimed to determine which composition and configuration of woody linear and areal habitats in the landscape may enhance the effect of natural enemy action on plant damage caused by the cereal leaf beetle (CLB, Oulema melanopus). Methods Herbivory suppression by natural enemies was assessed from the leaf damage difference between caged and open treatments. These exclusion experiments were carried out in 34 wheat fields on plants with controlled CLB infections. The results were related to landscape structure, quantified by different landscape metrics of both woody linear and areal habitats inside buffers between 150 and 500 m radii, surrounding the wheat fields. Results The exclusion of natural enemies increased the leaf surface loss caused by CLBs in all fields. Shelterbelts and hedgerows in 150–200 m vicinity of the wheat fields had a strong suppressing effect on CLB damage, while the presence of plantations at 250 m and further rather impeded natural enemy action. Conclusions Our results indicate that shelterbelts and hedgerows may provide a strong spillover of natural enemies, thus contribute to an enhanced biological control of CLBs.

show abstract

“…The parasitoid can complete several generations per year, has high reproductive potential, and most importantly, is well synchronized with egg deposition by O. melanopus in wheat (Haynes and Gage 1981). However, A. flavipes is not the most ideal biocontrol agent of O. melanopus because it is not host-specific (Haye 2000) and cannot on its own substantially reduce beetle populations (Jeloková and Gallo 2008). Anaphes flavipes was released in western North America but either failed to establish (Evans et al 2006) or has been inadequately monitored to assess its establishment success (Denke et al 2005).…”

Section: Discussionmentioning

confidence: 99%

Insect invasions of agroecosystems in the western Canadian prairies: case histories, patterns, and implications for ecosystem function

et al. 2011

View full text Add to dashboard Cite

Agroecosystems in the western Canadian provinces of Alberta, Saskatchewan, and Manitoba have been invaded by several alien herbivorous insects from several orders and families. These species have caused very substantial reductions in yield and quality of the dominant crops grown in this region, including cereals (primarily wheat, Triticum aestivum L., barley, Hordeum vulgare L., and oats Avena sativa L.), oilseeds (primarily canola, Brassica napus L. and Brassica rapa L., and mustard, Sinapis alba L. and Brassica juncea (L.) Czern.), and pulses (primarily field pea, Pisum sativum L., lentil, Lens culinaris Medik., and chickpea, Cicer arietinum L.). In this study, we used literature searches to identify the major species of insect pests of field crops in western Canada and determine those species indigenous to the region versus species that have invaded from other continents. We summarize invasion patterns of the alien species, and some estimated economic costs of the invasions. We document the invasion and dispersal patterns of the cereal leaf beetle, Oulema melanopus L. (Coleoptera: Chrysomelidae), for the first time in all three provinces. We also report the co-occurrence of its exotic parasitoid, Tetrastichus julis (Walker) (Hymenoptera: Eulophidae), and implications for classical biological control. We present results of field studies describing the dispersal patterns of a second recent invader, the pea leaf weevil, Sitona lineatus L. (Coleoptera: Curculionidae). The implications of invasions in this region are discussed in terms of economic and ecological effects, and challenges posed for pest mitigation.

show abstract

Parasitoids of cereal leaf beetle, Oulema gallaeciana (Heyden, 1879)

Cited by 7 publications

References 3 publications

Reproductive strategy as a major factor determining female body size and fertility of a gregarious parasitoid

Reproductive strategy as a major factor determining female body size and fertility of a gregarious parasitoid

Linear woody landscape elements may help to mitigate leaf surface loss caused by the cereal leaf beetle

Insect invasions of agroecosystems in the western Canadian prairies: case histories, patterns, and implications for ecosystem function

Contact Info

Product

Resources

About