Organic Regime Promotes Evenness of Natural Enemies and Planthopper Control in Paddy Fields. Issue 2 (25th February 2019)
- Record Type:
- Journal Article
- Title:
- Organic Regime Promotes Evenness of Natural Enemies and Planthopper Control in Paddy Fields. Issue 2 (25th February 2019)
- Main Title:
- Organic Regime Promotes Evenness of Natural Enemies and Planthopper Control in Paddy Fields
- Authors:
- Yuan, Xin
Zhou, Wen-Wu
Jiang, Yan-Dong
Yu, Hang
Wu, Sheng-Yong
Gao, Yu-Lin
Cheng, Jia-an
Zhu, Zeng-Rong - Abstract:
- Abstract: Planthoppers ( Nilaparvata lugens, Sogatella furcifera, and Laodelphax striatellus ) (Hemiptera: Delphacidae) are the most important pests affecting rice production. Pesticide spraying for its control may cause harmful effects on human health and the environment, especially the loss of biodiversity. The consequences of these changes on biodiversity and ecological services are well studied in tropical irrigated paddy fields, but are largely unknown in subtropical areas. Organic regime provides an environment-friendly method for biodiversity conservation; however, it is unclear whether this regime can suppress planthopper populations effectively in paddy fields. Consequently, we compared species richness, abundance, community structure, and evenness of natural enemies and planthoppers between organic and conventional rice fields ( n = 35) distributed across four sites in China. The results showed that species richness was higher in organic fields than in conventional fields. Shannon index and evenness of predators and parasitoids were higher in most of the organic fields than their conventional counterparts. Furthermore, planthopper density showed a significant negative relationship with increased richness and evenness for both predators and parasitoids. These results underscore the notion that management regimes influence biodiversity in rice field. Most importantly, this has direct implications on the efficacy of natural pest control services rendered by predatorsAbstract: Planthoppers ( Nilaparvata lugens, Sogatella furcifera, and Laodelphax striatellus ) (Hemiptera: Delphacidae) are the most important pests affecting rice production. Pesticide spraying for its control may cause harmful effects on human health and the environment, especially the loss of biodiversity. The consequences of these changes on biodiversity and ecological services are well studied in tropical irrigated paddy fields, but are largely unknown in subtropical areas. Organic regime provides an environment-friendly method for biodiversity conservation; however, it is unclear whether this regime can suppress planthopper populations effectively in paddy fields. Consequently, we compared species richness, abundance, community structure, and evenness of natural enemies and planthoppers between organic and conventional rice fields ( n = 35) distributed across four sites in China. The results showed that species richness was higher in organic fields than in conventional fields. Shannon index and evenness of predators and parasitoids were higher in most of the organic fields than their conventional counterparts. Furthermore, planthopper density showed a significant negative relationship with increased richness and evenness for both predators and parasitoids. These results underscore the notion that management regimes influence biodiversity in rice field. Most importantly, this has direct implications on the efficacy of natural pest control services rendered by predators and parasitoids associated with planthoppers in China and potentially other rice production regions in Asia. … (more)
- Is Part Of:
- Environmental entomology. Volume 48:Issue 2(2019)
- Journal:
- Environmental entomology
- Issue:
- Volume 48:Issue 2(2019)
- Issue Display:
- Volume 48, Issue 2 (2019)
- Year:
- 2019
- Volume:
- 48
- Issue:
- 2
- Issue Sort Value:
- 2019-0048-0002-0000
- Page Start:
- 318
- Page End:
- 325
- Publication Date:
- 2019-02-25
- Subjects:
- biodiversity -- biological control -- evenness -- natural enemy -- rice planthopper
Beneficial insects -- Periodicals
Beneficial insects -- United States -- Periodicals
Insect pests -- Control -- Periodicals
Entomology -- Periodicals
632.7 - Journal URLs:
- http://ee.oxfordjournals.org/content/ ↗
http://www.oxfordjournals.org ↗ - DOI:
- 10.1093/ee/nvz013 ↗
- Languages:
- English
- ISSNs:
- 0046-225X
- Deposit Type:
- Legaldeposit
- View Content:
- Available online (eLD content is only available in our Reading Rooms) ↗
- Physical Locations:
- British Library DSC - 3791.464000
British Library DSC - BLDSS-3PM
British Library STI - ELD Digital store - Ingest File:
- 11994.xml