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  • Parasites have a nasty reputation - but is really fair to fear these little guys? Well,

  • yes - and if you don't think so, here's why these terrifying creatures are worth avoiding

  • at all costs!

  • As if you need another reason to hate mosquitoes - when they bite humans they can leave larvae

  • of the parasitic Filarial Worm. These worms live and grow in our bodies, sometimes taking

  • years to mature into full adults, leaving only inconspicuous rashes and sores. Years

  • later, they work together to block the vessels of your lymphatic system, creating a build-up

  • of fluid and leading to diseases like elephantiasis. This is one of the leading causes of disability

  • in the world.

  • Another worm worth hating is the pinworm. Pinworm eggs are often eaten because of contaminated

  • or dirty hands. The eggs hatch and mature in your gut, at which point the adult female

  • exits the anus to lay a new batch of eggs on the surrounding skin. Your butthole becomes

  • a nest! This causes intense itching, often leading to re-contaminated hands or fingernails,

  • which can end up in your mouth again, restarting the cycle. Feel like scratching your bum?

  • Do yourself a favour and wash those hands and fingernails!

  • On the other side of the body, live the lovely pubic lice - sometimes called 'crabs'. Though

  • it's not uncommon to find these buggers in your eyebrows, beard or even eyelashes. The

  • itching is from an allergic reaction to their saliva, and it'll take treatment with medication

  • or shaving it all off to get rid of them. Of course, abstinence or no sex works well

  • as a preventative measure, along with not sharing your undies with other people.

  • Some parasites are meant for marine animals, but end up in humans out of the goodness of

  • our...gut? The Anisakis Nematode infects humans after eating raw or undercooked fish - like

  • sushi - which contains the larvae. The worms penetrate our gut wall and cause abdominal

  • pain, nausea and even vomiting. But, nobody really wins this one, as the nematode can't

  • mature in a human gut and eventually dies.

  • The Tongue Biter is another marine parasite. This tongue eating louse finds a suitable

  • fish and chews off it's tongue, only to cling on to the stub in it's place. Here they stay

  • feeding on the fishes blood, all the while mating and dispersing their progeny into the

  • ocean.

  • And finally, the wonderful cordyceps which are fungi known for creating zombie ants.

  • The fungus takes over the ants body and mind, making it leave the colony and begin climbing

  • upward to a more ideal temperature and humidity. The ant then bites onto a stem or leaf and

  • gets locked into position until it dies. At which point, the fungus bursts through the

  • ants head and spreads outward.

  • Could such a parasite ever affect humans? For everyone's sake, we hope not!

  • Our friends at James Cook University helped us put this horrifying list of parasites together,

  • with special help from parasitologist Dr Kate Hutson. JCU is one of the world's leading

  • institutions focusing on the tropics with an opportunity to study in a diverse physical

  • environment unparalleled by any university in the world. I actually studied there for

  • a semester abroad! If you want to learn more, be sure to head over to their website jcu.edu.au

  • - link in the description! You can check out the amazing Dr Kate Hutson as well at marineparasites.com.

  • And subscribe for more weekly science videos!

Parasites have a nasty reputation - but is really fair to fear these little guys? Well,

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B2 中上級

最恐の寄生虫! (The Most Horrifying Parasites!)

  • 353 24
    ivanmis に公開 2021 年 01 月 14 日
動画の中の単語

重要英単語

create

US /kriˈet/

UK /krɪ'eɪt/

  • v. 作り出す : 創造する
tongue

US /tʌŋ/

UK /tʌŋ/

  • n. (靴の)舌革;舌;言語;舌;言葉使い;話し方
  • v. 声を出す;舌で触る
worth

US /wɚθ/

UK /wɜ:θ/

  • n. ~の価値がある
  • adj. 価値
gut

US /ɡʌt/

UK /ɡʌt/

  • v. 建物の内部だけを壊す;動物や魚の内臓を取り出す
  • n. 内臓;勇気
mature

US /məˈtʃʊr/

UK /məˈtʃʊə(r)/

  • adj. 成熟した;成熟した
  • v. 熟成させる
marine

US /məˈrin/

UK /mə'ri:n/

  • n. 海兵隊
  • adj. 海の;海の : 海洋の
contaminate

US /kənˈtæməˌnet/

UK /kənˈtæmɪneɪt/

  • v. 汚染する : 不純にする
fungus

US /ˈfʌŋɡəs/

UK /ˈfʌŋgəs/

  • noun pl. 真菌 : きのこ
itch

US /ɪtʃ/

UK /ɪtʃ/

  • n. したくてたまらないこと;かゆみ
  • v. 痒い
worm

US /wɚm/

UK /wɜ:m/

  • n. ミミズ
  • v. 寄生虫を除く;(情報などを)巧みに引き出す;ゆっくり動く