Explain how different vectors are able to transmit disease in humans

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Rainbowpink1999x
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Does anyone have any idea of types of things I could write about with this title?
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Gluconeogenesis
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malaria would probably be a good one! also lyme disease from ticks. But if you look it up loads of things will probably come up! and then discuss how the disease gets from the bug into the system
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macpatgh-Sheldon
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Protein ----> glucose is right! - sorry, it is difficult to get people to laugh in this crisis!

A] The obvious one is malaria - look up female Anopheles mosquito e.g. A gambiense in W Africa and its life cycle [A rhodesiense in Southern Africa - maybe just a few lines on control of malaria:
- remove puddles/swamps where they breed
- pour oil on water to block breathing tube of larvae
- pour paraffin to reduce surface tension so the blighters sink and drown
- wire meshes on windows,
etc etc

Look up the causative protozoan: four species of Plasmodium e.g. P vivax, P falciparum

B] Trypanosoma causes "sleeping sickness" - transmitted by tsetse fly
C] Leishmaniasis
D] Wucheraria bancrofti: a worm transmitted by snail -----> elephantiasis by blocking leg veins ----> fluid from blood collects in legs ----> severe odema
E] Schistosomiasis [S japonicum ----> diarrhoea; S haematobium -----> haematuria [blood in urine] + pain on micturition.

etc etc.

M [former medical student]
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Rainbowpink1999x
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(Original post by macpatgh-Sheldon)
Protein ----> glucose is right! - sorry, it is difficult to get people to laugh in this crisis!

A] The obvious one is malaria - look up female Anopheles mosquito e.g. A gambiense in W Africa and its life cycle [A rhodesiense in Southern Africa - maybe just a few lines on control of malaria:
- remove puddles/swamps where they breed
- pour oil on water to block breathing tube of larvae
- pour paraffin to reduce surface tension so the blighters sink and drown
- wire meshes on windows,
etc etc

Look up the causative protozoan: four species of Plasmodium e.g. P vivax, P falciparum

B] Trypanosoma causes "sleeping sickness" - transmitted by tsetse fly
C] Leishmaniasis
D] Wucheraria bancrofti: a worm transmitted by snail -----> elephantiasis by blocking leg veins ----> fluid from blood collects in legs ----> severe odema
E] Schistosomiasis [S japonicum ----> diarrhoea; S haematobium -----> haematuria [blood in urine] + pain on micturition.

etc etc.

M [former medical student]
Wow thanks for the long reply, we only get 400 words to answer the question, do u think the question wants me to write about how we actually get malaria from mosquitos tho, so like how it goes into the blood and stuff?
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macpatgh-Sheldon
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(Original post by Rainbowpink1999x)
Wow thanks for the long reply, we only get 400 words to answer the question, do u think the question wants me to write about how we actually get malaria from mosquitos tho, so like how it goes into the blood and stuff?
"Explain how different vectors are able to transmit disease in humans"

Hi always try to address the exact wording of any Q [are you doing A level biology?] - so items that will earn marks ARE ONLY THOSE RELEVANT TO THIS WORDING [in this Q, pay particular attention to the bold underlined parts].

For malaria, you defo need to say how the mosquito's mouthparts are adapted to pierce human epidermis to first "pick up" plasmodium from an infected human then to bite a healthy human and inject these protozoa into him/her to make them ill i.e. transmit disease from the 1st person to the 2nd AND that the mosquito has the capacity to allow the pathogen to develop its stages inside its body. you could touch on yellow fever, also transmitted by mosquitoes (different species).

For different vectors, you will want to mention a variety of methods of transmission, so perhaps look at elephantiasis [vector is Culex mosquito]; leptospirosis [rat-bite]; rabies [dogs - not always man's best friend!]; Lyme disease [Arachnida [like spiders with 8 legs] = tick]; onchocerciasis [buffalo fly: Simulium species - most common cause of blindness in the world].

Good luck & be safe - if you need help in populating your essay with data, please feel free to PM me.

M
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