稻象甲从食物设施扩散到新的食物斑块后,其角质层的季节性微生物动态。

IF 1.8 3区 农林科学 Q2 ENTOMOLOGY
William R Morrison, Marco A Ponce, Joseph Castaldi, Avery James, Ian Stoll, Jenna Moreland, Jennifer Abshire, Tania N Kim, Alison R Gerken
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引用次数: 0

摘要

储存产品中的昆虫可能会引起食品安全问题,因为它们有能力传播有害微生物。随着气候变化的进展,矢量化的倾向可能会受到温度的影响。传病能力也可能随季节而波动。因此,我们评估了(i)野外采集的米象菌被允许分散到一个由琼脂组成的新食物斑块栖息地后,微生物生长面积和形态物种丰富度随季节的变化情况;(ii)收集米象菌前一周的温度是否影响其生长和丰富度。在2022年和2023年期间,我们每周将S. oryzae引入琼脂,并在第3天和第5天拍摄斑块,用ImageJ来表征生长并视觉上评分丰富度。在这两年中,第5天斑块上的微生物生长比第3天多1.4到1.6倍。在小麦和玉米收获期间收集的稻瘟病菌的微生物增长最大,而形态物种丰富度随着时间的推移逐渐增加。我们观察到,与2022年和2023年的季节开始相比,季节结束时形态物种的数量增加了11倍和3倍。小麦收获期(6 ~ 7月)和玉米收获期(9 ~ 10月)的微生物生长量是5月初的2.1 ~ 316倍。我们发现,这两年的田间温度与微生物生长呈正指数关系。这项研究扩大了我们对收获后昆虫-微生物相互作用的理解,并强调了食品设施在季节中的可变风险时期。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Season-long microbial dynamics from the cuticle of rice weevil originating at food facilities after dispersal to novel food patches.

Stored-product insects may pose food safety concerns due to their capacity to vector harmful microbes. As climate change progresses, the propensity for vectoring may be affected by temperature. Vectoring capacity may also fluctuate over the season. Thus, we evaluated (i) how the area of microbial growth and morphospecies richness vary over the season from field-collected Sitophilus oryzae that were allowed to disperse onto a novel food patch habitat comprised of agar and (ii) whether temperature in the week preceding collection of S. oryzae affected growth and richness. On a weekly basis during 2022 and 2023, we introduced S. oryzae onto agar, and photographed patches at 3 and 5 d, characterizing growth with ImageJ and visually scoring richness. There was 1.4- to 1.6-fold more microbial growth in patches at 5 d compared to 3 d in both years. The greatest microbial growth consistently occurred from S. oryzae collected during the wheat and maize harvest in grain bins, while morphospecies richness increased progressively over time. We observed an 11-fold and 3-fold increase in the number of morphospecies at the end of the season compared to the beginning in 2022 and 2023. There was 2.1- to 316-fold more microbial growth during the wheat (Jun to Jul) and maize harvest (Sep to Oct) compared to early May. We found a positive exponential relationship between temperature in the field and microbial growth in both years. This study expands our understanding of insect-microbe interactions after harvest and highlights variable periods of risk by food facilities over the season.

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来源期刊
Environmental Entomology
Environmental Entomology 生物-昆虫学
CiteScore
3.90
自引率
5.90%
发文量
97
审稿时长
3-8 weeks
期刊介绍: Environmental Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes reports on the interaction of insects with the biological, chemical, and physical aspects of their environment. In addition to research papers, Environmental Entomology publishes Reviews, interpretive articles in a Forum section, and Letters to the Editor.
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