BIOL 1070 Lecture Notes - South African Class 19 4-8-2, Environmental Policy, Vasodilation
4 Apr 2014
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Begin to build scientific vocabulary identify most important information discuss general factors that can affect biodiversity identify traits of organisms/species that relate to species survival and/or invasion ability. Trait: a characteristic; something that differentiates one species from another. Unionid life cycle: glochidia --> fish host --> juvenile --> adult. Unionid larvae: glochidia: cannot swim or crawl; attach to host fish gills. Ovisacs: glochidia enclosed in membranous capsules that mimic host prey. Conglutinates: packets of glochidia, eaten by host or stick to host. Mussel physically grips host and pumps glochidia over gills. Clicker question: which of the following contributes the most to the extraordinary success of. Can settle on and attach to any solid surface. Reasons for variation in thickness: adapted to different water (current) conditions; adapted to different predators (thin=easier to crack); different temperatures in water. Requires a lot of resource to create a thicker shell; if unnecessary they will not accumulate more shell material.
