Species composition and seasonal dynamics of aphid parasitoids and hyperparasitoids in wheat fields in northern China

Yang, Fan; Liu, Xu; Wu, Yuzhen; Wang, Qian; Yao, Zhi-Wen; Žikić, Vladimir; Tomanović, Željko; Ferrer-Suay, Mar; Selfa, Jesús; Pujadé-Villar, Juli; Traugott, Michael; Desneux, Nicolas; Lu, Yanhui; Guo, Yong

doi:10.1038/s41598-017-14441-6

Cited by 25 publications

(21 citation statements)

References 43 publications

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“…Parasitoid abundance generally increased throughout the growing season, as observed in previous studies previous studies, e.g., [ 47 , 48 ]. However, the distribution patterns of parasitoid abundances changed throughout the season—at the beginning of the season, higher abundances were found in the natural habitats, while later in the season, parasitoids were more abundant within the agricultural habitats.…”

Section: Discussionsupporting

confidence: 84%

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Parasitoid Abundance and Community Composition in Desert Vineyards and Their Adjacent Natural Habitats

Segoli

Kishinevsky

Rozenberg

et al. 2020

Insects

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Parasitoids are important natural enemies of many agricultural pests. Preserving natural habitats around agricultural fields may support parasitoid populations. However, the success of such an approach depends on the ability of parasitoids to utilize both crop and natural habitats. While these aspects have been studied extensively in temperate regions, very little is known about parasitoid communities in desert agroecosystems. We took one step in this direction by sampling parasitoids in six vineyards and their surrounding natural desert habitat in a hyper-arid region of the Negev Desert Highlands, Israel. We predicted that due to the high contrast in environmental conditions, parasitoid abundance and community composition would differ greatly between the crop and the natural desert habitats. We found that parasitoid abundance differed between the habitats; however, the exact distribution pattern depended on the time of year—with higher numbers of parasitoids in the natural habitat at the beginning of the vine growth season and higher numbers in the vineyard at the middle and end of the season. Although parasitoid community composition significantly differed between the vineyard and desert habitats, this only accounted for ~4% of the total variation. Overall, our results do not strongly support the notion of distinct parasitoid communities in the crop vs. the desert environment, suggesting that despite environmental contrasts, parasitoids may move between and utilize resources in both habitats.

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Section: Discussionsupporting

confidence: 84%

“…Parasitoid species composition was significantly affected by the sampling month, as was demonstrated in previous studies [48,59]. In addition, parasitoid composition significantly differed between the natural and the crop habitats.…”

Section: Discussionsupporting

confidence: 72%

Parasitoid Abundance and Community Composition in Desert Vineyards and Their Adjacent Natural Habitats

Segoli

Kishinevsky

Rozenberg

et al. 2020

Insects

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“…suspensus and Al . brevis , that are found in the cotton fields of Xinjiang, were also recorded in wheat fields, soybean fields, or some forest habitats [ 19 , 56 , 62 , 63 ] where they may be associated with various polyphagous primary parasitoids [ 16 , 64 – 66 ]. Furthermore, two species, Al .…”

Section: Discussionmentioning

confidence: 99%

Aphid parasitism and parasitoid diversity in cotton fields in Xinjiang, China

Zhang

et al. 2018

PLoS ONE

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Aphids are major pests of cotton crops in the Xinjiang Uygur Autonomous Region in China, and parasitoids are considered as important natural enemies in regulating aphid populations. However, information on aphid parasitoids in the Xinjiang cotton fields is limited, which hinders the study of aphid-parasitoid interactions and the application of conservation biological control against cotton aphids. In this study, a 3-year survey was conducted in a large geographical range that included three primary cotton planting areas in southern and northern Xinjiang. The population dynamics and the parasitism levels of an assemblage of aphids in the cotton fields were investigated along with the composition of the parasitoid community associated with these aphids. Aphid parasitization varied significantly within both years and seasons, with parasitism levels ranging from 0 to 26%, indicating that there is less effective biological control of parasitoids on aphids under field conditions. Among the primary parasitoids described, Binodoxys communis (Gahan) constituted 95.19% of the parasitoid species, followed by Praon barbatum Mackauer (3.15%), Trioxys asiaticus Telenga (1.01%) and Lysiphlebus fabarum Marshall (0.65%). Significant differences were found in the composition of the primary parasitoid species between the cotton seedling period (June) and the flowering period (July-August), and two more primary aphid parasitoids were found in the seedling period. Twelve hyperparasitoid species belonging to six genera were found in our study, of which Pachyneuron aphidis (Bouché), Syrphophagus species and Dendrocerus laticeps (Hedicke) were the dominant species. The composition of the hyperparasitoid community also differed significantly between the seedling and the flowering periods. The description of this parasitoid community-associated assemblage of aphids in cotton fields will facilitate the study of aphid-parasitoid interactions and promote the development of effective cotton aphid management strategies in Xinjiang.

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“…In terms of biological control, Aphidiinae parasitoids play crucial roles in natural aphid control 5 , 13 , 14 . Two Aphidiinae parasitoid species, Aphidius uzbekistanicus and A. gifuensis (Hymenoptera: Braconidae: Aphidiinae), predominate in wheat growing area of northern China 15 . These Aphidiinae parasitoids share both aphid host and hyperparasitoid species 5 , 15 , and are identified as controphic species 16 .…”

Section: Introductionmentioning

confidence: 99%

Moderately decreasing fertilizer in fields does not reduce populations of cereal aphids but maximizes fitness of parasitoids

Qiao

Yang

Hou

et al. 2021

Sci Rep

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Examination of the tradeoff between the extent of decreasing nitrogen input and pest suppression is crucial for maintaining the balance between essential yield and an efficient, sustainable pest control strategy. In this study, an experiment with four manipulated nitrogen fertilizer levels (70, 140, 210, and 280 kg N ha−1 = conventional level) was conducted to explore the effects of decreasing nitrogen on cereal aphids (Sitobion avenae and Rhopalosiphum padi) (Hemiptera: Aphididae), Aphidiinae parasitoids (Hymenoptera: Braconidae: Aphidiinae), and body sizes of parasitoids. The results indicated that nitrogen application, in the range of 70–280 kg N ha−1, has the potential to impact the populations of cereal aphids and their parasitoids. However, both differences between densities of cereal aphids and their parasitoids in moderate (140–210 kg N ha−1) and those in high nitrogen input (280 kg N ha−1) were not significant, and the parasitism rate was also unaffected. A higher parasitism rate reduced population growth of the cereal aphid (S. avenae). Additionally, a moderate decrease of nitrogen fertilizer from 280 to 140–210 kg N ha−1 maximized the body sizes of Aphidiinae parasitoids, indicating that a moderate decrease of nitrogen fertilizer could facilitate biocontrol of cereal aphid by parasitoids in the near future. We conclude that a moderate decrease in nitrogen application, from 280 to 140–210 kg N ha−1, does not quantitatively impact the densities of cereal aphids or the parasitism rate but can qualitatively maximize the fitness of the parasitoids.

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Species composition and seasonal dynamics of aphid parasitoids and hyperparasitoids in wheat fields in northern China

Cited by 25 publications

References 43 publications

Parasitoid Abundance and Community Composition in Desert Vineyards and Their Adjacent Natural Habitats

Parasitoid Abundance and Community Composition in Desert Vineyards and Their Adjacent Natural Habitats

Aphid parasitism and parasitoid diversity in cotton fields in Xinjiang, China

Moderately decreasing fertilizer in fields does not reduce populations of cereal aphids but maximizes fitness of parasitoids

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