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BIO 171 Lecture 6

Species Interactions I: Predation, parasitism, and herbivory

TermDefinition
Abdomen
Chitin A modified polysaccharide containing nitrogen that makes up the cell walls of fungi and the hard exoskeletons of arthropods.
Commensalism An interaction between species in which one partner benefits with no apparent effect on the other.
Community The set of all populations found in a particular place.
Constitutive Defense A defense that is always produced; contrast with inducible defense.
Ecdysis Molting; The process where arthropods molt their external skeleton during growth and replacing it with a larger one.
Ectoparasite Ectoparasites live on the outside of their hosts. (E.g. ticks and fleas)
Endoparasite Endoparasites live within their hosts. (E.g. measles, HIV, cholera)
Facultative Parasites that can either be parasitic or free-living. In ecology, a type of mutualism in which one or both sides can survive without the other. In metabolism, a means of obtaining energy that is sometimes but not always used.
Head
Herbivory The consumption of plant tissues by an animal (the herbivore).
Hexapod
Inducible Defense A defense that is produced only when a threat is detected; contrast with constitutive defense.
Insect The most diverse of the four main groups of arthropods, with a head, thorax, and abdomen, and six walking legs.
Macroparasite
Microparasite
Molting
Obligate In ecology, a type of mutualism in which one participant requires the other to survive. In metabolism, a means of gaining energy or argon that is required by the organism; that is, it has no other options, as in an obligate photoautotroph.
Parasitism
Predation
Thorax
Ecdysozoa A subclass of the protostome animals, characterized by the episodic molting of an exoskeleton during growth. (Include insects and other arthropods.)
Obligate Mutualistic An obligate mutualistic relationship is one in which both species in the relationship benefit in some way and in which neither can exist without the other.
Created by: chujacqueline
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