Parasitology

Arthropods have a special covering that envelopes their entire body called

chitin

Adults in the Mandibulata species have a body that is divided into 3 sections. The reproductive organs are found in which section?

Abdomen

Metamorphosis

The process for an insect to become an adult

Simple metamorphosis

Has 3 developmental stages

Complex metamorphosis

Has 4 developmental stages

Capitulum

The fusion of the head and thorax. It houses the mouthparts.

When a horse ingests beetles, what is often the result?

fatal colic

What is the condition called when horses become allergic to the bites of Culicoides fly?

sweet itch

This parasite affects sheep and goats. They cause puritis over much of the host's body, and this causes the sheep to scratch and damage the wool.

Melophagus ovinus

What happens if a Cuterebra is crushed when removing it from the breathing hole?

Anaphylaxis

Amitraz can not be used in

Horses

These mites are host specific and their feeding site is very pruritic. Because of the intense pruritis and the highly contagious nature of the infestation, they should be reported to both federal and state authorities.

Psoroptes ovis, P. bovis, and P. equi

Ivermectin can not be given to

rabbits

Among large animals, who are the most affected by scabies?

Pigs

The capitulum has 2 cutting organs called

Chelicerae

The penetrating anchor-like sucking organ is called

Hypostome

This tick is specific to cattle, and is the first arthropod to be shown to serve as the intermediate host for Babesia bigemina

Boophilus annulatus

These ticks are usually found in the ears of the definitive host. The larval and nymphal stages are parasitic. Large numbers of this tick can cause the ear to be very sensitive.

Otobius megnini

This tick is considered the primary vector for the transmission of Rocky Mountain Spotted Fever

Dermacentor variabilis

What populations are most at risk for contracting Toxoplasmosis?

Pregnant women and individuals with AIDS

How long does it take for Swimmer's itch to reach its maximum size on a human?

24 hours

How do we prevent infections with Taenia saginata?

Thorough meat inspection, and infected carcasses should be condemned for human consumption

What population is most at risk for contracting Dipylidium caninum?

Children under the age of 8

Sarcoptes scabei symptoms are rarely seen

face and genitals

When can Trichinella spiralis seen?

2-7 days

Ataxia

lack of muscle control and coordination

Nystagmus

uncontrollable eye movement

What is the treatment of choice for Taenia solium?

Praziquantel

What is the treatment for Anaplasma in cattle?

Tetracycline antibiotics and imidocarb

What causes feline infectious anemia?

Hemotropic mycoplasma species

What is a vector for Ehrlichia species?

Amblyomma americanum

What is a parasite that wanders into an organ in which it does not normally live?

Aberrant

This is found on a steer in a feedlot in Texas

Boophilus annulatus

This parasite was found on the fecal float of a raccoon. It is a zoonotic disease and this parasite causes neurological larval margins

Baylisascaris procyonis

Fasciola hepatica

This parasite is found on the fecal sedimentation of a steer.

Parascaris equorum

This was found on the fecal float of a filly.

Moniezia benedini

This was found on the fecal float of a heifer.

Dipylidium caninum

These were found on the fecal float of a dog. On the physical exam, you notice the dog has fleas.

Paragonimus kellicotti

This was found on the fecal float of a dog who has chronic respiratory issues and loves to catch crayfish.

Giardia species

This was found on the fecal float of a dog who presented with diarrhea.

Hepatozoon americanum

This was found on a blood smear from a dog.

Trichuris suis

This is found on a fecal sample from a sow.

Dermacentor variabilis

This tick was found on a dog.

Macracanthorhynchus hirudinaceus

This was found on the fecal float of a pig.

Taenia pisiformis

This was found on the fecal float of a dog that likes to eat rabbits.

Spirometra species

This is a fecal sample from a cat. The owner mentioned in the history that the cat likes to hunt frogs.

Toxocara canis

This is a fecal sample from a dog.

Amblyomma americanum

This tick was found on the flank of a cat that was slightly anemic.

Toxoplasma gondii

This was found on the fecal float from a cat.

Ancylostoma caninum

This is the fecal float of a puppy with severe anemia.

Anaplasma species

This was found on a blood smear from a steer.

Eimeria species

This was found on a fecal floatation of a cow.

Cheyletiella parasitivorax

This was found while doing a tape prep of a cat's fur.

Psuedoparasite

What type of parasite is this?

Ascarid type

What type of egg is this?

Microfilariae

What type of larva is this?

Stomoxys calcitrans

These flies were found around the legs and ventral abdomen of a cow.

Linognathus setosus

This was found in the hair clippings of a dog.

Damalinia bovis

This was found on the hairs of a steer.

Tabanus species

Flies like these were found around the naval of a horse.

Lutzomyia species

This parasite was found feeding on a chicken.

Otodectes cynotis

This was found on the ear swab of a cat.

Demodex species

These were found on the skin scrape of a puppy.

Ixodes scapularis

This was found on a deer.

Otobius megnini

This was found on the ear of a dog

Rhipicephalus sanguineus

This was found between the toes of a very sick dog.