Definitions Day 1 (What is Parasitology) Flashcards
Parasitism, Predations
One species benefits, one is disadvantages
-Host must be harmed getting harmed
Parasitism
Relationship one organism benefits expense of another
How common is parasitism?
Most common lifestyle: represent at least half of life on earth
Relate to Human Health
Significant heath risk, parasite biology can lead to new vaccines, control strategies
Vet Med and Ag.
Threaten livestock and food security
Livestock parasites are drug resistant
Genetic uniformity makes them vulnerable to parasitic diseases
Implications
Contribute to population crashes would can case larger issues
Biodiversity
Essential for ecosystem health
Parasites can promote biodiversity by keeping one group from taking over
How do they effect the ecosystem? and Evolutionary
Parasites act as selective agents, influencing populations dynamics, competition and influencing mating behaviors
-Parasites are vey abundant affect every species, important in the structure of species
-Understanding parasites helps threats to human, plants and animals, past and present
Ectoparasites
Live on host surface
Endoparasites
Live inside host body
Castrators
Inhibit host reproductions
-Damage reproduction: Parasite takes the energy that would have been used for reproduction
Body Snatchers
Control host behavior for their benefit
Obligator
Require host for life cycle
-Must be in host for part of their life to reproduce or move to another stage of life
Facultative
Usually free-living but can be parasitic
-does not need a host but if one becomes available it will take advantage
Opportunistic
Infect host under certain conditions
-Takes over when host becomes compromised in some way
-Normally the host would dispose of the parasite but since it is compromise in some way the parasite it able to take over
