アリグモの擬態 Antmimicking Spider - Mimic & Model

アリグモの擬態はアリを油断させて捕食するための攻撃的擬態ではないそうです。アリは視覚で騙されるほど目が良くないのでしょう。試しに生餌のミクロ蛾と一緒にアリ（種類­不明）をアリグモ♀の飼育容器に投入してみる。数日飼っても力関係で劣るのかアリグモは決してアリを捕食せず逃げて回りました（映像なし）。やはり攻撃的で恐れられている­アリに似せることで外敵から身を守る作戦らしい。「蟻の威を借る蜘蛛」
アリは獲物を噛み砕いて体内消化する。対するアリグモは体外消化で腹部にはアリの分節を模した横縞が見える。第一脚をアリの触角のように振り立てる。
Compare an antmimicking spider (Myrmarachne japonica) with an ant, both feeding independently on a little moth in the same enclosure. The mimicry is not for hunting ants in disguise but for making a bluff to defend itself from predators.
Music : Wolfstone - Braes Of Sutherland

Category:

Pets & Animals

Tags:

• jumping
• spider
• antmimicking
• mimicry
• eat
• feed
• アリグモ
• ハエトリグモ
• 擬態
• 捕食

[millball]

forgive my ignorance... but how is the spider benefiting from mimicking an ant? thats like mike tyson mimicking a ballerina

[sigma1920]

that was a very good question.

in the bug's world, ants are feared very much by others.

thx 4 watching!

[millball]

@sigma1920 I also wonder why spiders dont have communities like ants... a frightening thought... spider mounds popping up nationwide!

[sigma1920]

@millball

that is an interesting thought!

just search "social spider" at wikipedia.

and check out my vid about some spiderlings' mass hunting on a communal web.

watch?v=xXhbunSZpxA

[ConstructionMadness]

i thought spiders drink the fluid not eat the whole prey

[sigma1920]

u are right.

that's one of the big differences between insects (such as ants) and spiders.

this spider seemed to toy around with the prey looking for a juicier part to bite into.

[BananaOrangeBerry]

アリグモは東京にもいますか？

[ChupiTheTerrible]

It's more like a puma mimicing a wolf, actually. The theory is that ant mimicing spiders evolved in areas with a lot of ants that would become potential predators, and though not fool-proof the disguise would help prevent attacks from starting.

[sigma1920]

yeah, he is my hero, too.

and kudos to the camera crews.

[superfisto]

Haha. I knew I had seen it!

On a side note, I grew up watching Attenborough. He's awesome.