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worms that live in or on hosts
consist of a _____: head with suckers and ___: body segments containing reproductive organs
ex. Taenia species, Hymenolepis species, diplyidium
if eaten, the ____ will develop into a new tapeworm
most worms live in the intestine or circulatory system of hosts
ex. hookworms, pinworms and several other roundworms live intestines or lymph system
cause damage while still larvae
ex. Wuchereria bancrofti: lives in _____
lyphatic tissue and causes elephantiasis
3 types of flukes
clonorchis sinesis and fasciola hepatica
What are the 3 classification of arthropods?
found in all environments
largest group of living organisms ___%
What are the 3 groups under parasites?
--class ____ (spiders, ticks, mites)
-subphylum _____ (crabs, shrimp)
- subphylum ______ (insects)
- intermediate parasites
- disease vectors
an organism that transfers a parasite to a new host
overtime, parasites tend to _____ so as to become less harmful to their hosts
- if the host dies, the parasite loses it source of ______
What are the body parts of an arachnid?
- - 2 body regions (cephalothorax, abdomen)
- - 4 pairs of legs (mouthpart)
spiders, scorpions, ticks and mites
external parasites; vectors of infectious diseases
some arachnids cause ____
ticks and mites
diseases such as infected ticks
denotes disease state involving multiple species of MO
recent studies show that 24% of the people being treated for tickborne disease are ____
treatment that kills one of the MO may leave patient suffering from the other undiagnosed disease
usually inflicted with a second or third such disease
What are the body regions of insects?
How many pairs of legs does it have?
- highly specialized mouth pieces
ex. flies, lice _____, _____, _____
What are insects that have thick waxy wings and have sucking mouthparts instead of biting?
- - head, thorax, abdomen
- - 3
- -mosquitoes, true bugs
What can cause salmonellosis
What is the common housefly?
-attracted to both human food and human excreta
-leaves traces of bacteria, vomit and feces whereever it goes
What are the body segments of crustaceans?
- head (cephalon)
- abdomen (pleon)
Each body segment of the crustacean can bear _______
segments on the head include: (antennae,___, __)
thoracic segment bear legs: (pereiopods,_____)
a pair of appendages
trebius shiinoi (a type of copepod, an _____ and ______)
an ex. is a copepod inside the Japanese angel shark
it is an endosymbiont because they ___ in sharks
_____ because they suck the blood from surface of shark embryos developing inside the uterus