Biology of Rhynchaenus maculosus provides insights and implications for integrated management of this emerging pest
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Published:2022-08-27
Issue:1
Volume:12
Page:
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ISSN:2045-2322
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Container-title:Scientific Reports
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language:en
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Short-container-title:Sci Rep
Author:
Yang Ruisheng,Qiu Pengcheng,Gu Yujian,Ni Mingyang,Xue Zhenhai,Han Jianhua,Jiang Yiren,Jin Ying,Wang Yong,Zhou Xinfeng,Liu Wei,Zhang Jihui,Qin Li
Abstract
AbstractRhynchaenus maculosus is an emerging insect pest with an increasingly serious tendency. Lack of biology information results in the bottleneck of integrated management of this pest. To facilitate an available design of integrated pest management strategy, biology of R. maculosus, including voltinism, life cycle, distribution, and damage has been investigated. Results reveal that R. maculosus is oligophagous and distributes in Heilongjiang, Jilin, and Liaoning provinces, China. This pest produces one generation per year (univoltinism) and overwinters as adults in leaf litter. From mid-April to late-April, active overwintering adults emerge from overwintering sites. The next generation of adult R. maculosus appears from mid-May to early June until mid-August to early September when the beetles move into the overwintering places. The entire time span of adult occurrence ranges from 315.6 ± 3.6 to 336.4 ± 3.2 days (Mean ± SD). Larvae undergo 3 instars with a total duration of 20 to 23 days. R. maculosus larvae feed on Q. wutaishanica and Q. mongolica without host-specific preference between the two host species, but do not harm Q. acutissim. Three species of larval parasites were collected and identified as Braconidae sp., Eulophidae sp., and Ceraphronidae sp. Biological information of R. maculosus provides essential insights for design and implementation of integrated management of this pest.
Funder
the Venture Foundation of National Silk Industry China Agriculture Research System of MOF and MARA
Publisher
Springer Science and Business Media LLC
Subject
Multidisciplinary
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