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Diversity of planthoppers associated with the winter rice agroecosystems in southern Yunnan, China.

Hu SJ, Fu DY, Liu XJ, Zhao T, Han ZL, Lü JP, Wan HL, Ye H - J. Insect Sci. (2012)

Bottom Line: A field survey of the overwintering planthoppers (Hemiptera: Delphacidae) associated with the rice agroecosystems in southern Yunnan was carried out during January-February in 2010 and 2011. 22 species of planthoppers were collected and identified, with one species representing the subfamily Stenocraninae and the other 21 species in Delphacinae.Planthopper species diversity showed a reductive trend from south to north and reflected a gradient of more severe winter temperatures.In addition, planthopper diversity was influenced by smaller-scale differences in terrain and habitat, as evidenced by greater diversity in the valleys and low-altitude areas as compared to mid-mountain and Karst plain areas.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Biological Invasion and Transboundary Ecosecurity, Yunnan University, Kunming, 650091, China. shaojihu@hotmail.com

ABSTRACT
A field survey of the overwintering planthoppers (Hemiptera: Delphacidae) associated with the rice agroecosystems in southern Yunnan was carried out during January-February in 2010 and 2011. 22 species of planthoppers were collected and identified, with one species representing the subfamily Stenocraninae and the other 21 species in Delphacinae. Nycheuma cognatum (Muir), Peregrinus maidis (Ashmead), and Pseudosogata vatrenus (Fennah) were new provincial records for Yunnan. The pest species, Sogatella furcifera (Horváth), Nilaparvata lugens (Stål), and Laodelphax striatellus (Fallén) were able to overwinter in part of the survey range. 13 species were listed to be of economic importance. Abandoned rice paddies with dense Poaceae grasses (Poaceae) were the most favorable overwintering habitat. The survey range was divided into four regions and five areas based on natural geographical characteristics. The study demonstrated that winter temperature differentiation, terrains, and habitat differences were three factors affecting planthopper diversity. Planthopper species diversity showed a reductive trend from south to north and reflected a gradient of more severe winter temperatures. In addition, planthopper diversity was influenced by smaller-scale differences in terrain and habitat, as evidenced by greater diversity in the valleys and low-altitude areas as compared to mid-mountain and Karst plain areas.

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Related in: MedlinePlus

Geographic distribution of the 38 field sites surveyed in southern Yunnan. The numbers of field sites correspond to those given in Table 1. High quality figures are available online.
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f01_01: Geographic distribution of the 38 field sites surveyed in southern Yunnan. The numbers of field sites correspond to those given in Table 1. High quality figures are available online.

Mentions: In an attempt to allow comparison with the previous research of Yang et al. (1982), the areas between the southern border of Yunnan up to 25 °N latitude were set as the surveyrange. 38 field sites (Table 1, Figure 1) were selected within this area based on the following criteria: (1) localities had paddies presented year—round or in any other season apart from winter, (2) terrains such as plateaus, valleys, mountains, and hills were included, and (3) localities having previous reports of rice planthoppers infestation in spring and summer.


Diversity of planthoppers associated with the winter rice agroecosystems in southern Yunnan, China.

Hu SJ, Fu DY, Liu XJ, Zhao T, Han ZL, Lü JP, Wan HL, Ye H - J. Insect Sci. (2012)

Geographic distribution of the 38 field sites surveyed in southern Yunnan. The numbers of field sites correspond to those given in Table 1. High quality figures are available online.
© Copyright Policy - open-access
Related In: Results  -  Collection

License
Show All Figures
getmorefigures.php?uid=PMC3472921&req=5

f01_01: Geographic distribution of the 38 field sites surveyed in southern Yunnan. The numbers of field sites correspond to those given in Table 1. High quality figures are available online.
Mentions: In an attempt to allow comparison with the previous research of Yang et al. (1982), the areas between the southern border of Yunnan up to 25 °N latitude were set as the surveyrange. 38 field sites (Table 1, Figure 1) were selected within this area based on the following criteria: (1) localities had paddies presented year—round or in any other season apart from winter, (2) terrains such as plateaus, valleys, mountains, and hills were included, and (3) localities having previous reports of rice planthoppers infestation in spring and summer.

Bottom Line: A field survey of the overwintering planthoppers (Hemiptera: Delphacidae) associated with the rice agroecosystems in southern Yunnan was carried out during January-February in 2010 and 2011. 22 species of planthoppers were collected and identified, with one species representing the subfamily Stenocraninae and the other 21 species in Delphacinae.Planthopper species diversity showed a reductive trend from south to north and reflected a gradient of more severe winter temperatures.In addition, planthopper diversity was influenced by smaller-scale differences in terrain and habitat, as evidenced by greater diversity in the valleys and low-altitude areas as compared to mid-mountain and Karst plain areas.

View Article: PubMed Central - PubMed

Affiliation: Laboratory of Biological Invasion and Transboundary Ecosecurity, Yunnan University, Kunming, 650091, China. shaojihu@hotmail.com

ABSTRACT
A field survey of the overwintering planthoppers (Hemiptera: Delphacidae) associated with the rice agroecosystems in southern Yunnan was carried out during January-February in 2010 and 2011. 22 species of planthoppers were collected and identified, with one species representing the subfamily Stenocraninae and the other 21 species in Delphacinae. Nycheuma cognatum (Muir), Peregrinus maidis (Ashmead), and Pseudosogata vatrenus (Fennah) were new provincial records for Yunnan. The pest species, Sogatella furcifera (Horváth), Nilaparvata lugens (Stål), and Laodelphax striatellus (Fallén) were able to overwinter in part of the survey range. 13 species were listed to be of economic importance. Abandoned rice paddies with dense Poaceae grasses (Poaceae) were the most favorable overwintering habitat. The survey range was divided into four regions and five areas based on natural geographical characteristics. The study demonstrated that winter temperature differentiation, terrains, and habitat differences were three factors affecting planthopper diversity. Planthopper species diversity showed a reductive trend from south to north and reflected a gradient of more severe winter temperatures. In addition, planthopper diversity was influenced by smaller-scale differences in terrain and habitat, as evidenced by greater diversity in the valleys and low-altitude areas as compared to mid-mountain and Karst plain areas.

Show MeSH
Related in: MedlinePlus