animal キレンジャクとヒレンジャクの違いは？分布は？夏と冬の生態は？冠羽や赤い蝋状物質の役割とは？蝋状物質で「年齢」が分かる！？
キレンジャクとヒレンジャクはどちらも赤や黄色など色鮮やかで冠羽を持つレンジャク属の冬鳥でよく似ており、区別に迷うことがあるかもしれません。しかし、尾羽の先端を確認すれば確実に判別できますし、細かい色彩も異なります。分布は大きく異なり、キレン...
animal
animal 
animal List of references for identifying terrestrial and aquatic insects (continuously being edited)
本記事では昆虫を同定するための文献を収集していきます。基本的に検索表が載っており種まで確実に同定できるものを中心に集めています。全ての分類群を対象としてますが、あくまで個人的に必要・目撃した文献を収集しているため、完全網羅するものではありま...
animal The mysterious fly known as the bee-like hoverfly, which is born and lives on tree sap, can it sting? Is it harmful?
Are you familiar with the hoverfly known as the false bee hoverfly? At first glance, it looks exactly like a bee, but hoverflies are actually a type of fly, so they won't sting you and are harmless. Its bright colors are thought to be a form of mimicry. Although it's actually a type of hoverfly...
animal What are the species of moths in the family Zygaenidae? Are they poisonous? Are they harmful? What is the purpose of their bright colors?
The Zygae family, exemplified by species like the firefly moth and the bamboo grass moth, is known for its bright, diurnal colors. But do you know why they have such striking colors? It turns out they possess a powerful poison that produces cyanide, and these colors serve as a "warning signal"...
animal What kind of dragonfly is a "red dragonfly"? Why does it turn red? Why does the common skimmer dragonfly turn blue? Two scientific reasons have been revealed. It turns out it's actually "sunscreen"!?
The "red dragonfly" is a creature so familiar to Japanese people that it even has its own children's song. The group commonly referred to as "red dragonfly" is a general term for dragonflies whose males turn red. Taxonomically, it's not a single group but rather a collective term for several separate groups, such as the Sympetrum and Scarlet Skimmer genera.
animal Why are the "thighs" of the longhorn beetle *Tetragnatha japonica* so thick? Was it an evolutionary adaptation to hold down females?! Recent research reveals clues in closely related species! A scientific approach to "sexual conflict."
Are you familiar with the insect known as the "Peach-thick Longhorn Beetle"? It gathers on flowers from spring to early summer and is one of the most commonly seen longhorn beetles in Honshu. Its most distinctive feature is its thick hind legs. Have you ever wondered why this is the case...?.
animal The spines on the spiny grasshopper, which inhabits wetlands, are actually a defense mechanism to protect itself from frogs! A rational defense strategy combined with feigning death!
Are you familiar with the grasshopper known as the spiny grasshopper? It's a relatively common creature in Honshu, especially in rice paddies. Surprisingly, this species has been found to protect itself from predation by frogs through a combination of two mechanisms: spines on its body and a behavior called feigning death...
animal The rare spider *Euphyllia japonica*, which preys on its victims by spinning silk from its mouth, can be found in your home!
When you imagine a spider, how do you picture it producing silk? A common misconception is that it produces silk from its mouth. In reality, spiders have organs called "spinnerets" on their abdomen from which they produce silk. Spiders typically don't produce silk from their mouths...
animal Reporting on the first record of the Japanese land planarian (Bipalium nipponense) and its first record in Hyogo Prefecture! (Paper published in 'Nature Study')
本記事では以下の雑誌にて公表した「兵庫県におけるワタリコウガイビルの記録」の報文の下書きを掲載します。引用方法：池田健一・池田篤弥. 2022. 兵庫県におけるワタリコウガイビルの記録. Nature Study 68(5): 6. ISS...
animal 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...