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Research has revealed that "intraguild predation" occurs universally between spiders and wasps, potentially contributing to ecosystem stability! [Press Release]

In the "Ecological Information" section, at the request of the lead author, Mr. Daisuke Noguchi, I assisted with the introduction, discussion, and literature review on a paid basis. This research revealed that intraguild predation between spiders and wasps occurs universally, and that there is a possibility of "symmetrical intraguild predation" between spiders and wasps...
2022.03.31
animalecosystem
plant

What are the differences between *Neolitsea sericea* and *Quercus acuta*? We'll explain how to distinguish between these similar species! What are their uses? Does the difference in flower color affect their ecology?

Both *Neolitsea sericea* and *Quercus acuta* are evergreen trees belonging to the *Neolitsea* genus that are naturally distributed in Japan. Therefore, you may often see them in the wild, but their leaves are very similar in shape, which can lead to confusion. However, you can reliably distinguish them by examining the whiteness of the underside of the leaves and the color of their fruits...
2022.03.19
plant
plant

What are the differences between Viola higoensis and Viola enzanensis? Both species skillfully utilize "open flowers" and "closed flowers" depending on the environment!

Viola higoensis and Viola enzanensis are members of the Viola genus that inhabit relatively natural areas. They differ significantly from other Viola species in their finely divided leaves, but their flower shapes are almost identical, making them somewhat difficult to distinguish. Morphologically, Viola higoensis has leaves divided into five lobes...
2022.02.25
plant
plant

Why is black tea preferred over green tea in the UK? Are flies the only ones that visit tea plant flowers?

Tea plants contain essential nutrients like catechins and caffeine, making them an indispensable beverage in Japan, enjoyed both at home and on the go. As you may know, its origin lies in China, and it's a species not native to Japan. However, even in China, wild varieties haven't been confirmed, which is puzzling...
2022.02.21
plant
plant

What are the differences between Greater Celandine and Japanese Kerria? We'll explain how to distinguish between similar species! Are they poisonous? Why do Greater Celandine flowers bloom at an angle?

クサノオウとヤマブキソウはいずれも黄色い4枚の花弁から構成されるケシ科の野生種であるため、区別に迷うことがあるかもしれません。葉は小葉の鋸歯の有無で見分けることができ、花は殆どそっくりですが、花序の付き方や雄しべや雌しべの形に違いがあります...
2022.02.08
plant
plant

What are the differences between Aucuba japonica, Aucuba japonica var. serrata, and Aucuba japonica var. japonica? We explain how to distinguish between similar species! Only fungus gnats were visiting the inconspicuous flowers!? Only bulbuls were eating the fruit!?

Aucuba japonica is distributed in evergreen broad-leaved forests of East Asia and is a very common plant in Japan, even in urban areas, where it's rare to go a day without seeing it. Several varieties of Aucuba japonica are known, and they are often classified into Aucuba japonica (in the narrow sense), Aucuba japonica var. nangokuensis, and Aucuba japonica var. dwarf. The differences between them are not easily discernible from their names alone...
2021.12.16
plant
animal

マエグロツリアブの日本国内記録と滋賀県の初記録を報告！（『月刊むし』掲載論文）

本記事では以下の雑誌にて公表した「滋賀県におけるマエグロツリアブの記録」の報文の下書きを掲載します。引用方法：池田健一. 2021. 滋賀県におけるマエグロツリアブの記録. 月刊むし 610: 46. ISSN: 0388-418X (fu...
2021.11.24
animal
plant

ネコノヒゲ（クミスクチン）に似た種類は？見分け方を解説、花には蝶が専門に訪れていた！？クミスクチン茶の効果は？

ネコノヒゲ（クミスクチン）は日本国内では雄しべが長い花が人気の観賞用の園芸種として知られています。また沖縄ではクミスクチンと呼ばれ、クミスクチン茶として利用されることがあります。近縁種は同属にいくつか知られていますがあまり似ていません。日本...
2021.11.07
plant
plant

Was the endangered species *Toranoosuzukake* a rare plant associated with Hiraga Gennai?

*Platanthera japonica*, a perennial herb distributed mainly in western Japan, is designated as an endangered species by various prefectures, although it is not designated as such by the Ministry of the Environment. The reason for its endangered status is its extremely small population, but the exact cause of this low population size is not well understood.
2021.10.06
plant
plant

Is it a lie that only male osmanthus plants were introduced to Japan? Are there insects that dislike its unique scent?

キンモクセイは一般に中国原産と言われる雌雄異株の常緑小高木です。この木の由来として「日本に雄株のみが持ち込まれた」と記述されることが頻繁にあります。しかし、おそらくこれは事実でなく日本で選抜されたクローン個体群であるというように近年は考えら...
2021.10.04
plant
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