Daisuke Sasaki

Daisuke Sasaki
Hokkaido Research Organization | HRO · Kamikawa Agricultural Experiment Station

Bachelor of Agriculture

About

20
Publications
1,429
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4
Citations
Citations since 2017
20 Research Items
4 Citations
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201720182019202020212022202301234567
201720182019202020212022202301234567
201720182019202020212022202301234567

Publications

Publications (20)
Article
Full-text available
Neoamphorophora ledi (Wahlgren, 1938) (Hemiptera, Aphididae) is distributed in northern Europe and Japan. In Japan, N. ledi was previously recorded only from Tochigi Prefecture , Honshu Island. In the present study, we recorded N. ledi for the first time from Hokkaido, Nagano, and Oita Prefectures located in Hokkaido, Honshu, and Kyusyu Islands, re...
Article
Full-text available
Aphis (Aphis) hypochoeridis (Börner, 1940) is native to Europe, and has been introduced to Honshu and Kyusyu Islands in Japan. The present study recorded this species for the first time from Hokkaido Island, Japan. Ant species attending the aphid colonies were identified as Lasius flavus, L. japonicus, Nylanderia flavipes, and Tetramorium tsushimae...
Article
Full-text available
Valeriana fauriei Briq. is a caprifoliaceous perennial herb cultivated in Japan as a medicinal crop. In 2020, the occurrence of Myzus (Nectarosiphon) persicae (Sulzer, 1776) was found on V. fauriei in greenhouses in northern Hokkaido, northern Japan. This is the first report of M. persicae occurring on V. fauriei in the world. Laboratory experiment...
Article
Aulacorthum solani was recorded on Boenninghausenia albiflora var. japonica in Japan in 2019, where symptoms such as deformation and/or yellowing, were observed on infested leaves. Rearing experiments revealed that A. solani is able to reproduce on the same plant species. Boenninghausenia albiflora var. japonica has not been recorded as a host plan...
Article
Leaf mold (pathogen: Passalora fulva) and Cercospora leaf mold (Pseudocercospora fuligena), fungal diseases of tomato leaves, have very similar symptoms, while the conidiophores are morphologically distinguished. Therefore, an accurate diagnosis requires observing the conidiophores with a biological microscope. This paper proposed an in-field diagn...
Article
Two new mealybug species (Hemiptera: Coccomorpha: Pseudococcidae), namely, Dysmicoccus kunaw Tanaka sp. nov. and Phenacoccus miruku Tanaka & Choi sp. nov., collected in Japan, are described based on the morphological characteristics of the adult females. Dysmicoccus kunaw resembles D. trispinosus (Hall 1923) and D. furcillosus Williams 2004, but...
Article
In Catalogue of the insects of Japan, Volume 4 Paraneoptera published in 2016, Hokkaido was excluded in the distributions of two aphid species, Lipaphis erysimi and Semiaphis heraclei. However, the literature and field surveys in this report revealed that both species are distributed in Hokkaido. Furthermore, in the field survey, the oviparous fema...
Article
Population dynamics of alate aphids were surveyed using yellow pan traps at two garlic fields( Pippu and Takikawa) in Hokkaido, Japan, in 2020. In the Pippu survey during the early spring to harvest season, the first capture of alate aphids was observed on May 28. In Takikawa during the same season, the first capture was observed from May 30 to Jun...
Article
A new species of soft scale insect (Hemiptera: Coccomorpha: Coccidae), Luzulaspis kinakikir Tanaka sp. nov., collected from Carex miyabei (Cyperaceae), on Hokkaido Island, Japan, is described and illustrated based on adult female morphology. The new species, which belongs to the Scotica group of Luzulaspis, is similar to L. filizae Kaydan, 2015, bu...
Article
Full-text available
Growth suppression, such as stunt and wilt, of Lettuce (Lactuca sativa) was found in Shizuoka Prefecture, Japan in June, 2018. Identification and inoculation of fungal isolate obtained from necrotic lesions on roots reveal that this disease was black root rot of lettuce caused by Berkeleyomyces rouxiae. This is the first report of the disease from...
Article
Full-text available
In the original publication of the article, the following sentence “To prevent L. wasabiae invasion of wasabi nurseries, we recommend insect nets of d males, respectively.
Article
Liothrips wasabiae Haga & Okajima (Thysanoptera: Phlaeothripidae) is an important pest insect infesting wasabi (Eutrema japonicum syn. Wasabia japonica) but effective control methods are still missing. Therefore, we investigated the host range of L. wasabiae and the efficacy of chemical and biological insecticides and a physical control method (ins...
Article
In April 2018, the occurrence of Sinomegoura citricola was recorded on Ilex rotunda (Aquifoliaceae) in Japan. Both aphid identification with mounted specimens and rearing experiments with the plant shoots revealed that I. rotunda is a definite host for S. citricola. This is believed to be the first study to report a species of the family Aquifoliac...
Article
Full-text available
Damping-off of kale (Brassica oleracea L., Acephala group) was found in Iwata, Shizuoka, Japan in 2016. Isolates obtained from basal stems with typical symptoms were identified as Rhizoctonia solani AG-4 HG-I. Original symptoms were reproduced on healthy kale seedlings after inoculation with the isolates, and inoculated fungi were reisolated from t...
Article
Full-text available
Aphis nasturtii is a polyphagous aphid and widely distributed throughout the world with the exception of the Australian Continent. In Japan, A. nasturtii was recorded only from Okinawa Island, the Ryukyu Islands and Tokyo, central Honshu. In this paper, we report A. nasturtii from Shizuoka, Shimane, Ehime, and Saga Prefectures. This is the first re...

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