BILD 3 Lecture 12: 2-13-17 lecture notes 12
Document Summary
Shellfish (filter feeders- oysters, clams, mussels) concentrate neurotoxins found in some red tide dinoflagellates can be highly toxic if eaten by humans. Injected into human host when mosquito takes blood meal. Periodically burst out of red blood cells to infect new cells. Malaria infection increases attractiveness of humans to mosquitos. Diatoms are a major component of phytoplankton and are highly diverse. Are the largest and most complex algae. Are all multicellular, and most are marine. Have the most complex multicellular anatomy of all algae. Complex alteration of generations (diploid spore producing generation alternates with haploid gamete-producing generation) A variety of life cycles: have evolved among the multicellular algae. The most complex life cycles include an alternation of generations: the alternation of multicellular haploid and diploid forms. Provides physical substrate and habitiat for entire community. Alaska - otters - keystone species that keep herbivorous urchins in check.
