Flashcards
Fish 406 Flashcards
Cards in this deck (21)
- 1Arthropod ClassesArachnida (ticks and mites)
Insecta (lice, bugs, fleas, flies)
Crustacea (crabs, lobsters, copepods) - 2Distinguishing Features of Arthropods1. Bilateral symmetry
2. Segmented body
3. Hard exoskeleton
4. Jointed legs
5. Many pairs of limbs - 3Two types of parasite transmission in whales1. Vertical transmission- mother to calf
2. Sexual transmission (STD) - 4What type of Insecta can be seen with similar morphology to whale parasites?Human lice (both cause itching, sores, infection and lost mating opportunities)
- 5What is a Protelean parasite?An organism that lives parasitically as a larvae and is free living as an adult (example: myiasis of humans is the infection of fly larvae in human tissue)
- 6Human Botfly scientific nameDermatobia hominis
- 7Life cycle of the botfly
- 8Humans get 3 types of liceHead (Pediculus humanus capitis)
Body (Ph. corporis)
Pubic (Ph. pubis)
Body lice is the only to vector disease - 9Characteristics of micropredatorsMove from host to host
Pathology is intensity-dependent
Vectors of disease - 10Vectorborne disease examplesBlack legged tick - lyme disease
House mosquito - lymphatic filariasis
Kissing bug - American trypanosomiasis - 11Black legged tick (Ixodes scapularis) life cycleSymptoms: fatigue, flu-like symptoms, bulls eye rash
- 12What is the phylum, class, and subclass of ticks and mites?Phylum Arthropoda
Class Arachnida
Subclass Acari
Class Insecta
Parasite arachnids: ticks and mites - 13How are ticks and mites different from other arthropods?-reduced segmentation on posterior
-anterior gnathosoma/capitulum
-chelicera on each size of mouth for piercing, tearing, gripping
-idiosoma
-most adults have 8 legs, but some mites have fewer - 14Pathology of a tick infection-anemia
-dermatosis
-injection of a vectorborne pathogen
-tick paralysis
-otoacariasis (grouping in ear) - 15Examples of tick infections- Borreelia burgdorferi/Lyme disease
-Rocky Mountain spotted fever
-Babesiosis (Babes microti)
-Ehrlichiosis/Anaplasmosis
-Tularemia - 16Tick life cycle
- 17Differences between ticks and mitesTicks: large, terrestrial, usually blood feeders
Mites: small, terrestrial/freshwater/marine, tiny-so feed on lymph or other secretions - 18Pathology of Demodex spp. (mites)-usually benign
-loss of eyelashes
-granuloma formation
-proliferation in absence of immune response - 19Family TrombiculidaeChiggers "red bugs"
Can transmit scrub typhus
Larval stage is parasite
Nymphs and adults are predators
inject proteolytic secretions, suck up juices - 20Family SarcoptidaeScabies (Sarcoptes scabei)
burrows under skin (linear diagnostic tracks)
intense itching
transmitted by prolonged contact
Canine scabies - 21Family Pyroglyphidae"house dust mites"
abundant in dust
house dust allergy