BIO 200 Lecture 9: BIO200 LECTURE 9: Species Concepts and Reproductive Isolation + Species Formation
5 Nov 2017
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Bio200 jessica poulin lecture 9: different species look different and utilize different. Morphological species concept: individuals of a single species share measurable traits: sometimes, different species look very similar to each other. The biological species concept: groups of actually or potentially interbreeding natural populations which are reproductively isolated from other such groups. Non-species: do not mate or cannot produce fertile offspring. Reproductive isolating mechanisms: prezygotic isolating mechanisms. Habitat (geographic or ecological: allopatric: occurring in separate, non-overlapping geographical areas (geographic mountain/river barrier, sympatric: occupying the same or overlapping geographical areas (ecological same area but different habitats) Male lion x female tiger = liger (fertile) -> female lion x male tiger = tigon (infertile) Temporal isolation based on timing (lactuca graminifolia during the spring, lactuca. Behavioral attraction to own behaviors of own species different mating rituals (example: blue footed booby will not be attracted to the red footed booby)
