Journal of Integrative Agriculture ›› 2021, Vol. 20 ›› Issue (7): 1889-1897.DOI: 10.1016/S2095-3119(20)63419-0

所属专题: 昆虫合辑Plant Protection—Entomolgy

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  • 收稿日期:2020-03-25 出版日期:2021-07-01 发布日期:2021-06-02

Potential influence of carbohydrate and amino acid intake by adults on the population dynamics of Cnaphalocrocis medinalis (Lepidoptera: Crambidae)

LI Chuan-ming1, 2, XU Jian1, 2, LIU Qin2, HAN Guang-jie1, 2, XU Bin2, YANG Yi-zhong1, LIU Xian-jin
  

  1. 1 College of Horticulture and Plant Protection, Yangzhou University, Yangzhou 225009, P.R.China
    2  Institute of Agricultural Sciences for Lixiahe Region in Jiangsu, Yangzhou 225007, P.R.China
    3 Key Laboratory of Food Quality and Safety of Jiangsu Province, Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Sciences, Nanjing 210014, P.R.China
  • Received:2020-03-25 Online:2021-07-01 Published:2021-06-02
  • Contact: Correspondence XU Jian, Tel: +86-514-87637599, E-mail: bio-xj@163.com; LIU Xian-jin, E-mail: jaasliu@jaas.ac.cn
  • About author:LI Chuan-ming, E-mail: liming0595@163.com
  • Supported by:
    This work was supported by the Natural Science Foundation of Jiangsu Province, China (BK20191216), the Jiangsu Agricultural Science and Technology Innovation Fund (ZX(17)2002), the International Cooperation and Exchanges Projects of Jiangsu Province (BZ2020039), and the Opening Fund of Jiangsu Key Laboratory for Food Quality and Safety-State Key Laboratory Cultivation Base (028074911709).

摘要:

稻纵卷叶螟为水稻上一种重要害虫,目前对于稻纵卷叶螟成虫营养需求以及成虫营养对种群繁殖的影响还不明确。本研究旨在分析糖和氨基酸对稻纵卷叶螟成虫生殖和种群参数的影响。结果表明,取食糖和氨基酸能够显著影响成虫存活和生殖。取食不同种类糖溶液(蔗糖、果糖、葡萄糖)后成虫寿命和繁殖力显著增加,卵巢发育速度加快。取食糖溶液后成虫繁殖力增加主要是由于产卵历期延长及逐日产卵量增加。与取食纯净水相比,取食糖溶液后稻纵卷叶螟种群内禀增长率rm由0.103提高到0.138。取食氨基酸对稻纵卷叶螟成虫寿命、产卵量及卵巢发育无显著影响。补充糖份对稻纵卷叶螟成虫繁殖及种群动态具有促进作用,因此在应用开花植物进行害虫生态调控过程中应充分考虑花蜜对害虫种群的潜在促进作用。


Abstract:

Cnaphalocrocis medinalis is a key lepidopteran pest of rice.  However, little is known about the nutritional requirements of the adult or the effects of adult-derived nutrients on reproduction.  The aim of the present study was to evaluate the effects of carbohydrates and amino acids on the reproductive and demographic parameters of C.?medinalis.  Different feeding solutions significantly influenced adult survival and reproduction.  All the sources of carbohydrates used in the treatments (fructose, glucose, and sucrose) were sufficient to increase adult longevity and fecundity, and benefited the development of ovaries in the adult stage.  The positive impact of carbohydrates on lifetime fecundity was due to the prolonged oviposition period and the increased daily fecundity.  The intrinsic rate of increase (rm) of C.?medinalis increased from 0.103 in water-fed individuals to approximately 0.138 when adults were fed with solutions containing carbohydrates.  In contrast, amino acid intake by adult insects exhibited no effect on the longevity, fecundity, ovarian development or population growth, even showing an impact of decreasing longevity of females.  As nectar secreted by the flowering plant is generally rich in sugars, the potential effects of nectar on the adults of C.?medinalis and other pests have to be considered during the development of biological control by applying flowering plants as a microhabitat and food source for natural enemies in rice fields.

Key words: Cnaphalocrocis medinalis ,  carbohydrate-feeding ,  adult nutrition ,  reproduction ,  population dynamics