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What is the concept of spontaneous generation? - living organisms could develop from nonliving or decomposing matter Who challenged the concept of spontaneous generation by showing that maggots on decaying meat came from flies, not from the meat itself? - Francesco Redi Who showed that mutton broth boiled in flasks and then sealed could still develop microorganisms, which supported the theory of spontaneous generation? - John Needham Who showed that flasks sealed and then boile...

Symbionts organisms living together Symbiosis Association/relationship of two or more organisms living together Mutualism Biological relationship between two or more organisms when both the host and organism benefit from one another - helping each other Flagellates (protozoa) an example of MUTUALISM and it is found inside the digestive system of termites Commensalism One organism benefits but there is no beneficial or harmful effect to the host Entamoeba ...

Cestodes - tapeworms Tape worm do not have - digestive system, their food is absorbed from the hosts intestine. Cestodes Larval stages - parasitic in the tissues or body cavities of vertebrate or invertebrate hosts. Neck + proglottids - = Strobila In Diphyllobothrium scolex is - spatulate & is provided with a long median ventral & a similar dorsal sucking groove or *bothrium* In cestodes the tregion of growth &proliferation - Neck cestodes alimentary canal - ...

Spirocerca lupi The esophageal worm associated with the formation of nodules in the esophageal wall of dogs and cats. Spirocerca lupi infects what domesticated animals? Canines and Felines In what location does the adult spirocerca lupi reside? The Esophageal wall of canines and felines. How is spirocerca lupi transmitted? Ingestion of eggs in canine and feline feces. What is the common name for spirocerca lupi? Esophageal worm Is spirocerca lupi zoonitic? No ...

A single celled organism What is a Protozoa? No Are all Protozoa parasitic? AD Sarcomastigophora, Apicomplexa, Ciliophora What are the 3 Phylums for Protozoa we are concerned with Veterinary Medicine? Ticks What species usually serve as intermediate host for Protozoa? Hemoprotozoa What are Protozoa found in blood called? Intestinal Protozoa What are Protozoa found in intestines called? Simple and complex What type of life cycle do Protozoa have? asexu...

What are the three species of trematodes in cats and dogs? - Nanophyetus salmincola Alaria spp. Platynosomuum fastosum What is the common name for trematodes? - Flukes Nanophyetus salmincola finds a host in what animals? - Dogs, cats, coyotes, foxes, bears What part of the body would you find a Nanophyetus salmincola infection? - Small intestines What is the prepatent period of Nanophyetus salmincola? - 8 days or less Nanophyetus salmincola causes what condition ...

Properties of Tapeworms (Cestodes) Second Major Group of Flatworms Segmented body, lack a gut or a mouth, 3 pairs of posterior hooks Found in Digestive Tract Life Cycle typically has 2 hosts, sometimes 3 Must be eaten to infect a host Hermaphroditic Each body segment is a reproductive unit Aquatic & Terrestrial Lifecycles Properties of Trematodes (Flatworms) aka Digenia/Flukes/Platyhelminthes Approx. 1mm to 5cm long, soft bodies, attach with suckers Complex lifecy...

sarcoptic (fat and chubby) and non-sarcoptic what are the two types of mites look at pedicle on leg to see if it is unsegmented, segmented, long, short how do you tell mites apart simple nymphs and larvae look like the adult what type of metamorphosis do ticks have delusional parasitosis what is one condition that ticks and mites can cause that affects neurological function mange mites what is another name for sarcoptic form mites 8 legs as an ad...

When a parasite resides on surface of host - Ectoparasite Fleas lice and flies are - Insects ticks and mites are - arachnids What are bloodsucking anneilds and what is an infestation called - Leeches: hirudiniasis What are the difference of insects - Three pair of legs Three distinct body region (head, thorac, and abdomen) Single pair of antennae Difference of arachnids (adult) - Four pairs of legs Don't divided into two regions (cephalothorax and abdomen)...

Hypobiosis/Arrested Development Arrested or inhibited larval development; a temporary cessation in nematode larval development Autoinfection Reinfection by the progeny of a parasite while they are still within the body of the host Facultative Parasites Can be free living or parasitic Obligate Parasites Must have a host Premunition Resistance of a host to superinfection which persists only so long as the parasites which provoke it survive and are present in the host. It i...

Phoresis - The term for "traveling together" Commensalism - A relationship between two organisms in which one organism benefits and the other is unaffected Mutualism - A relationship between two species in which both species benefit Parasitism - A relationship between two organisms of different species where one benefits and the other is harmed Ectoparasites - Parasites that feed on external surface of host. Endosymbionts - any organism that lives within the ce...

In Sarcocystis spp, sporogony takes place ______________ inside the DH Sarcocystis eggs are infectious __________ immediately in fresh feces Disease associated with Sarcocystis spp sarcocystosis, EPM Sarcocystis phylum Apicomplexa Sarcocystis spp have an ________ life cycle indirect Sarcocystis spp DH are __________ and IH are ________ carnivores/omnivores; herbivores Sarcocystis cruzi DH and IH dogs and cattle Sarcocystis neurona DH, IH, and AH DH: O...

definitive host of ascaris lumbricoides - humans intermediate host of ascaris lumbricoides - none transport host of ascaris lumbricoides - cockroach (rarely) target organ of ascaris lumbricoides - small intestine infectious stage of ascaris lumbricoides - J3 what does ascaris lumbricoides have to do to reach j4? - lung migration how can ascaris lumbricoides be obtained? - fecal/oral contamination, unwashed fruits eggs of ascaris lumbricoides - def...

Foxes, Other Canids, Rarely Cats What are the definitive hosts of Echinococcus multilocularis? Rodents What are the intermediate hosts of Echinococcus multilocularis? Small Intestine Where is Echinococcus multilocularis found in the definitive host? Abdominal Cavity Where is Echinococcus multilocularis found in the intermediate host? Multilocular Hydatid Cyst What kind of metacestode is Echinococcus multilocularis? Y Can Echinococcus multilocularis be zoonotic? ...