Spider venom generally acts on the insects that spiders feed on, so it is extremely weak compared to the venom of other poisonous animals such as snakes, scorpions, and bees. Spiders do not actively attack humans, and most bites on humans, mammals, and birds only cause a little pain. However, among the approximately 35,000 species of spiders recorded around the world, several species have been reported as clearly harmful venomous spiders. The composition of the venom is unknown. The most well-known are the black widow spider, found in North America and Central America, and the Sydney funnel-web spider Atrax robustus, found around Sydney, Australia. Source: Heibonsha World Encyclopedia, 2nd Edition Information |
クモの毒は一般に餌となる昆虫に対して作用するため,他の有毒動物であるヘビ,サソリ,ハチなどの毒と比較するときわめて弱い。クモが人などを積極的に襲うことはなく,人や哺乳類,鳥類に対しては,かまれても少し痛い程度のものが大部分である。しかし,世界で記録されている約3万5000種のクモの中には明らかに有害な毒グモとして数種が報告されている。毒の成分は定かではない。もっとも有名なものは,北アメリカ~中央アメリカに分布しているクロゴケグモと,オーストラリアのシドニー周辺に分布しているシドニージョウゴグモAtrax robustusである。
出典 株式会社平凡社世界大百科事典 第2版について 情報 |
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