MEDICAL ENTOMOLOGY ENTO 3645
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Gracie Roob I
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This 12 page Class Notes was uploaded by Gracie Roob I on Saturday September 12, 2015. The Class Notes belongs to ENTO 3645 at University of Georgia taught by Champagne in Fall. Since its upload, it has received 83 views. For similar materials see /class/202267/ento-3645-university-of-georgia in Entomology at University of Georgia.
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Date Created: 09/12/15
At long last some suggestions and sample problems for test 1 You should be able to define the following terms and in most cases give examples from the course Myiasis Myalgia DALY Tagmatization ecdysis apolysis reservoir host amplifying host dead end host tangential host vector bridge vector zoonosis anthroponosis epidemic endemic pandemic epizootic enzootic definitive host mechanical transmission vertical transmission biological transmission II III rro 1 rro 1 I 39 transmission You should be able to list 6 ways in which arthropods may cause or be associated with disease You should be able to list 4 forms of evidence that must be met to identify a disease vector An aspect of arthropod growth and development that does not occur in vertebrates is Besides providing names for species a biological classification system should do what You should be able to list defining characters of the following taxa or if given the characters you should be able to name the taxon Subphylum Arachnomorpha Class Arachnida Order Scorpiones Order Araneae Order Acari Family Argasidae Family Ixodidae Subphylum Mandibulata Superclass Crustacea Subclass Pentastomatida nfraphylum Atelocerata Class Diplopoda Class Chilopoda Epiclass Hexapoda Class Entognatha Class Insecta Hint during the test you may be able to find many of these names if you look in the multiple choice questions you can use that to jog your memory or check spelling There are a lot ofdiagrams in Unit 1 I will not ask you to label diagrams However on each diagram structures are marked with an asterisk You should be able to name these structures and explain their function What is the difference between incomplete and complete metamorphosis and what is thought to be the evolutionary advantage of complete metamorphosis You should be familiar with the hormonal regulation of molting and development see description in Unit 1 folder You should be able to describe or recognize a scenario for the evolution of blood feeding You should be able to describe two functionsactivities of saliva that assists arthropods in blood feeding You should be able to identify mechanismssignals that arthropods use to find and identify their vertebrate hosts Regarding the model for vectorial capacity the McDonald model you should be able to identifydefine the components of the model and understand which ones are most important in influencing vectorial capacity There are some questions at the end of the writeup posted on ELC make sure you understand those questions If I ask about the model on the exam the question will not require a calculator it will be solvable by a simple calculation You will not be asked to write out the model ie the equation you just need to know what it describes and understand the different components of the model For each of the various diseases you should know the reservoir vectorarthropod cause pathogen ifany transmission cycle mechanism by which disease is caused allergy host immune reaction to pathogen effect of pathogen on specific tissuescell types distinguishing symptoms treatment drug or in some cases none for selflimiting diseases There are actually not too many diseases yet relapsing fever tick paralysis Lyme Rocky Mountain Spotted Fever Monocytic Ehrlichiosis Sarcoptic and Demodectic Mange rickettsia pox scrub typhus chicken mite rash You should also know about the role of dust mites in causing disease In the case of Lyme disease we spent a lot of time talking about transmission in the Northeast vs the South That suggests it might be important to be able to explain how Borrelia is maintained and transmitted in various parts of the country You should be able to explain the llinverted feeding cycle and why it occurs not just say llinverted feeding cycle and hope I will assume you actually understand it You should be familiar with the concept of emerging diseases and be able to explain why some diseases are emerging We did not get to cover some tick diseases such as 39 39 39 39 39 I will therefore not ask about those diseases I will check with Dr GiliaNuss to be sure she got through the material on the mite and hemiptera lectures Anything on the powerpointpdfs that were not discussed in call will not be on the test For the mites you should be able to associate specific mites with specific diseases You should know the mechanism by which Sarcoptes mites cause disease What is a stylosome What disease are dust mites associated with How do they cause this disease You won t be asked to reproduce the diagrams regarding effect of DerPl on Bcell function but you should be prepared to recognize correct and incorrect statements about the process in a multiple choice question You should be familiar with bedbugs where do you look for them how do they get around how do you treat them what diseases if any do they vector You should be familiar with the Trypanosoma cruzi parasite it s transmission and life cycle and symptoms acute and chronic of infection The terms should mean something to you You should be familiar with control strategies employed by the Southern Cone initiative You should know why Chaga s disease transmission is almost nonexistent in the US The test will consist of about 75 multiple choice truefalse matching or fill in the blank About 25 will consist of questions that require a couple of sentences to potentially a paragraph or two to answer The multiple choice will have only one correct answer unless I specify otherwise for specific questions I do not subtract incorrect answers when calculating grades Here are a few typical multiple choice questions to give you an idea of what to expect 1 A disease that involves primarily nonhuman vertebrates and is suddenly increasing in frequency is called an a reservoir b epizootic c epidemic d enzootic e pandemic 2 An insect ingests a blood meal that contains a thousand larval nematode worms microfilariae The microfilariae go through two further developmental stages but do not reproduce in the insect After 18 days there are 5 L3 stage more mature nematodes ready to be transmitted to a new vertebrate host note each part counts as a question ie 2 points 2A What type of transmission is this a mechanical b zoonotic c existential d biological e reductive 23 Which term best applies to the life cycle of the nematode in the insect a cyclodevelopmental b cyclopropagative c epidemic d enzootic e pro pagative 2C What term applies to the 18 day developmental period of the nematode in the insect a cyclodevelopmental period b cyclopropagative period c extrinsic incubation period d intrinsic incubation period e epidemic developmental period 3 What is the pathogen that causes Rocky Mountain spotted fever a Ehrlichia chaffeensis b Borrelia burgdorferi c Barrefa duttoni d Ehrlichia phagocytophila e Rickettsia rickettsii 4 What is the vector of Lyme disease in California a Dermacentor andersoni b Sarcoptes scabei c Ixodes pacificus d Amblyomma americanum e Ixodes scapulaH39s 5 What arthropod is the vector of human monocytic ehrichiosis a Dermacentor andersoni b Sarcoptes scabei c Ixodes pacificus d Amblyomma americanum e Ixodes scapulaH39s 6 Which of the following arthropods would you look for if you suspected a patient was suffering from tick paralysis a Dermacentor andersoni b Sarcoptes scabei c Ixodes pacificus d Boophilus microplus e Ixodes scapulaH39s 7 What is the pathogen that causes relapsing fever in the Western USA a Ehrlichia chaffeensis b Borrelia burgdorferi c Barrefa hermsii d Ehrlichia phagocytophila e Rickettsia rickettsii 8 What arthropod is a major vector of Rocky Mountain spotted fever a Dermacentor andersoni b Sarcoptes scabei c Ixodes pacificus d Amblyomma americanum e Ixodes scapulaH39s 9 Ornithodoros ticks are vectors of a Lyme diseases b Granulocytic ehrichiosis c tickborne encephalitis d relapsing fever e they have irritating bites but they are not vectors of any disease 10 Ticks in the family Argasidae a have a single nymphal stage b take multiple blood meals as adults c mostly feed on deer and other large mammals d complete their life cycle in two years e take up to 14 days to feed as adults 11 What is the term for the behavior hard ticks do when searching for a host 12 A patient presents with myalgia fever headache and a peticial rash and reports a history of tick bite 10 days previous to becoming ill 12A What would be your initial diagnosis what disease would you suspect 123 What antibiotic would probably not be appropriate to prescribe a penicillin b tetracycline c doxycycline 13 The reservoir of the pathogen that causes monocytic ehrlichiosis is a whitefooted mice b whitetailed deer c bobcats d humans e a variety of bird species 14 Female hard ticks are distinguished by the presence of a festoons b Haller39s organ c a toothed hypostome d a scutum e females can39t be easily distinguished from males in this family unlike the soft ticks 15 What does the term quotmyalgiaquot mean 16 A single eye facet in insects is called a or an a ommatidia b labrum c spiracle d ovipositor e tergum 17 Malphigian tubules are associated with what function in insects a respiration b excretion c digestion d reproduction e they are sensory structures 18 What combination of characters best fits the Crustacea a cephalothorax 4 pairs of legs 2 pairs of antennae b cephalothorax at least 5 pairs of legs no antennae c podosoma and opistosoma seperated by a pedicel 4 pairs of legs no antennae d podosoma and opistosoma seperated by a pedicel 4 pairs of legs stinging telson e cephalothorax at least 5 pairs of legs 2 pairs of antennae 19 Insect wings probably did or did not evolve from modified legs circle one Scientific Names Common Names Fleas Order Siphonaptera Ctenocephalides felis fe Iis Cat Flea can transfer dog parasites vector for the DoublePored Dog Tapeworm transmits the pathogen Dipylidium caninum The dogcucumber tapeworm 0 Life cycle Tapeworm attaches to intestinal wall with releasing segment called proglottid egg pouch Exits hosts through anus dries and falls to substrate Flea larvae consume proglottid with tape worm eggs Eggs hatch and develop inside flea as it continues to develop Infected flea with cysticercoids tapeworms is eaten by host Tape worm emerges from flea and attaches to host intestinal wall Pulex Irritans Human Flea Tunga penetrans Chigoe Flea Only fleas that don t jump Echidnophaga gallinacea Sticktight Flea Xenopsylla cheopis Oriental Rat Flea primary vector in Urban Cycle of Bubonic Plague vector for Murine Typhus along with the Northern Rat Flea FIGS Order Diptera Two wingsquot Non Biting Flies Biting Flies Flies Producing Myiasis Musca domestica house fly Stomoxys calcitrans Stable Fly Lucilia cuprina Bronze Bottle Fly Musca autumnalis face fly Haematobia irritans Horn Fly Phormia Regina Black Blow Fly Musca Sorbens bazaar fly Tabanidae Horse Fly Deer Fly Phaenicia sericata Green Bottle Fly Hippelates eye gnat genus Melophagus ovinus Sheep Ked Cochliomyia macearia secondary screwwo rm Fannia canicularis little house fly Lipoptena spp Deer Ked Gasterophilus intestineis Horse bot fly Sarcophagidae flesh flies Nycteribiidae Bat Fly Gasterophilus nasalis Throat Bot Fly Calliphoridae blowflies Streblidae Bat Fly Oestrus ovis sheep nose bot Eristalis syrphid fly rattailed maggots Glossina spp Tsetse Fly Cochliomyia hominivorax New World Screwworm Fly Hermetia illucens black soldier fly Dermatobia hominis tropicalhuman bot fly Nasopharyngeal myiasis Deer Nose Bots Cuterebra spp rodent and rabbit bots Face Fly Musca autumnalis mechanical vectors Moraxella bovis pink eye and Thelazia eyeworms Stable Fly Stomoxys calcitrans developmental vector of Habronema microstoma spirurid nematode causing summer sores in horses Deer Fly Fever arterial nematode of deer and sheep caused by Tabanidae Francisella tularensis Elaeophora Schneideri African Trypanosomiasis Nagana Francisella tularensis African Sleeping Sickness Human Trypanosoma
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