Exam (elaborations)
REHS- Vectors Exam Questions and Complete Solutions Graded A+
- Course
- Institution
REHS- Vectors Exam Questions and Complete Solutions Graded A+
[Show more]
Content preview
REHS- VectorsExam Questions
and Complete
Solutions Graded
A+
Denning [Date] [Course title]
, Which sex of the mosquito bites? - Answer: -Females.
2.Why does a female mosquito have to take a blood meal? - Answer: -Needed in order to mature her
eggs.
3.Why are mosquitos known as a vector? - Answer: -Because they release infectious agents when taking
a blood meal. Inoculation.
4.Describe the diseases which a mosquito can spread. - Answer: -Four common diseases of the
mosquito are Plasmodium Vivax (Malaria), Yellow Fever, Encephalitis, Filariasis.
5.Describe the lifecycle of a mosquito. - Answer: -11 to 16 day cycle. Adult female mosquitoes lays eggs
in water, eggs hatch in 2-3 days into larvae, larvae feeds on organic matter, larvae turn into pupa (4-10
days later). Pupae then turns into an adult mosquito in 2 days.
6.What are some larval characteristics of mosquitos? - Answer: -Depending on type of species.
Anopheles larvae (malaria vector) are flat looking and wiggle horizontally up and down. -culex larvae
(western st. louis encephalitis) has a long breathing tube. Tube can be seen out of the water. -The Aedes
larvae (yellow fever) has a short breathing tube. It moves at different angles.
7.Describe how mosquito surveys are performed. - Answer: -check for flow characteristics, stagnancy,
and pollution levels in open bodies of water. Mosquito dippers used to capture larvae and study the
adult mosquito.
8.what are Tossits and how are they used? - Answer: -A petroleum based oil pesticide used to **** up
larvae. Considered a hazardous material in California! Liquid detergent is now used.
9.Name 2 common natural enemies of the mosquito. - Answer: -Gambusia Affinis: Minnow freshwater
fish is referred to as the mosquito fish. -The DragonFly: kills larvae and adult mosquitoes.
10.Describe some mosquito control methods. - Answer: -Pesticides (used as a last resort). -When larvae
control has failed these methods can be used: -Fogging (spray insecticides) misting technique into the
air. -Screening, protective clothing; physical barriers. -Repellents: diethyltoluamide (deet) very popular
active ingredient. Vit. B12 or garlic or garlic oil.
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller YourExamplug. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $14.49. You're not tied to anything after your purchase.
Can Stuvia be trusted?
4.6 stars on Google & Trustpilot (+1000 reviews)
67866 documents were sold in the last 30 days
Founded in 2010, the go-to place to buy study notes for 14 years now