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Parasit Vocab Exam1
Vocab terms from the first few lectures, fall 2012
| Question | Answer |
|---|---|
| symbiotic | living together |
| commensal | parasite causes no harm/help; parasite derives benefit |
| mutualistic | parasite & host benefit |
| parasitism | parasite may cause harm to host (doesn't always cause disease) |
| host | organism from which the parasite derives some or all of its needs |
| facultative host | not necessary for parasite |
| obligate host | parasite must have the host |
| definitive host | where the adult/sexual stages of the parasite live |
| intermediate host | where immature or asexual stages of parasite live |
| paratenic host | a host in which immature stages are found but are not necessary for completion of the life cycle; way for parasite to get from 1 host to another |
| euryoxenous | wide host range |
| monoxenous | narrow host range |
| reservoir host | host serves to perpetuate a parasite in the environment |
| incidental host | not important to propogation of teh parasite |
| species | population which is capable of inbreeding |
| primary divisions of classification of organisms | kingdom, phylum, class, order, family, genus, species |
| economic parasitism | level where the host may appear normal but is unable to gain weight, produce wool, hair milk, run faster than others, or any other factor which makes the host noncompetitive with its genetic equals; doesn't achieve its genetic potential |
| clinical parasitism | rare but can be devastating; level of paraistism may be sufficient to cause overt disease or even death of the host |
| resistance | ability to limit numbers of parasites |
| resilience | ability to tolerate parasites |
| hypobiosis | periods of time where parasite is within the host but not metabolically active |
| translation | movement of parasites into the vegetation away from the fecal pat |
| incomplete metamorphosis | hemimetabolous; true bugs, lice, mites, ticks; egg -> nymph (several stages) -> adult |
| complete metamorphosis | holometabolous; fleas, flies; egg -> larva (several instars) -> pupa -> adult |
| mechanical vector | transmits inefective organisms directly to a recipient host without any development or multiplication; transmission occurs usually within a short time span |
| biological vector | infective organisms either undergo development or multiply (or both) within the vector before being transmitted to teh recipient host; usually blood feeders and transmission occurs after a prolonged time span |
| class insecta: distinguishing features | 3 pairs of legs in adults; 3 body parts (head, thorax, abdomen); usually have 2 pairs of wings, 2 prominent eyes & a pair of antennae |
| class arachnida, order acarina: distinguishing features | anterior gnathosoma (capitulum) and posterior idiosoma (sac-like body); no antennae; mouthparts consist of palps, chelicera, hypostome; eyes very simple if present |
| list the soft ticks we learned | argas persicus, otobius megnini, ornithodorus spp |
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shelbell8389
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