著者
Régis Rouzé Anne Moné Frédéric Delbac Luc Belzunces Nicolas Blot
出版者
Japanese Society of Microbial Ecology · The Japanese Society of Soil Microbiology
雑誌
Microbes and Environments (ISSN:13426311)
巻号頁・発行日
vol.34, no.3, pp.226-233, 2019 (Released:2019-09-25)
参考文献数
86
被引用文献数
55

The gut of the European honeybee Apis mellifera is the site of exposure to multiple stressors, such as pathogens and ingested chemicals. Therefore, the gut microbiota, which contributes to host homeostasis, may be altered by these stressors. The abundance of major bacterial taxa in the gut was evaluated in response to infection with the intestinal parasite Nosema ceranae or chronic exposure to low doses of the neurotoxic insecticides coumaphos, fipronil, thiamethoxam, and imidacloprid. Experiments were performed under laboratory conditions on adult workers collected from hives in February (winter bees) and July (summer bees) and revealed season-dependent changes in the bacterial community composition. N. ceranae and a lethal fipronil treatment increased the relative abundance of both Gilliamella apicola and Snodgrassella alvi in surviving winter honeybees. The parasite and a sublethal exposure to all insecticides decreased the abundance of Bifidobacterium spp. and Lactobacillus spp. regardless of the season. The similar effects induced by insecticides belonging to distinct molecular families suggested a shared and indirect mode of action on the gut microbiota, possibly through aspecific alterations in gut homeostasis. These results demonstrate that infection and chronic exposure to low concentrations of insecticides may affect the honeybee holobiont.
著者
大久保 寛二
出版者
流通経済大学
雑誌
流通経済論集
巻号頁・発行日
vol.5, no.4, pp.119-128, 1971-02
著者
Jake P. Greenhalgh Daniel Amund
出版者
Food Safety Commission, Cabinet Office, Government of Japan
雑誌
Food Safety (ISSN:21878404)
巻号頁・発行日
pp.D-19-00004, (Released:2019-09-24)
参考文献数
26
被引用文献数
8

Edible insects present a potential solution to increasing global food insecurity. However, there is limited research on the microbial hazards they may pose. These include opportunistic pathogens like Cronobacter spp. (formerly Enterobacter sakazakii). In this study, nine types of ready-to-eat edible insect products purchased in the UK were examined for their microbial load (total aerobic count, total Enterobacteriaceae count), and screened for the presence of Cronobacter sakazakii(C. sakazakii) by selective enrichment and plating on chromogenic agar. While microbial load was generally low, presumptive Cronobacter spp. were detected in five of the edible insect products. Four of the isolates were identified as C. sakazakii, using the Remel RapID ONE biochemical test kit. Genotypic characterisation of the isolates by ITS-PCR, however, demonstrated that the isolates may be other species of Cronobacter instead. Further studies into understanding microbial hazards linked to edible insects for human consumption are required.
著者
葛谷 彩
出版者
明治学院大学法学会
雑誌
明治学院大学法学研究 (ISSN:13494074)
巻号頁・発行日
vol.100, pp.409-425, 2016-01-29

【書評論文/Review Article】
著者
石井達朗著
出版者
新宿書房
巻号頁・発行日
2003

6 0 0 0 OA 扁平受像管

著者
三戸 左内 上野 嗣勝
出版者
一般社団法人 映像情報メディア学会
雑誌
テレビジョン (ISSN:18849644)
巻号頁・発行日
vol.23, no.3, pp.191-204, 1969-03-01 (Released:2011-03-14)
参考文献数
18
被引用文献数
1 1

画面サイズ8インチ, 単偏向板形偏向方式を用い, 管の厚み約56mmの扁平受像管を開発した. また, 螢光面と対向した主偏向器電極に透明なネサ膜を使うことによつて, 螢光面の映像を裏から見えるようにした両面テレビ受信機の可能性を調査した. 解像度は中心部において水平, 垂直ともに300本が得られた.
著者
中村 健之介
出版者
大妻女子大学
雑誌
大妻比較文化 : 大妻女子大学比較文化学部紀要 (ISSN:13454307)
巻号頁・発行日
vol.9, pp.146-127, 2008

今回は、「ドストエフスキー・ノート(3) 日本ロシア文学会講演」(『大妻比較文化 紀要7』)の追記である。