ZOO 3700 Lecture Notes - Lecture 1: Ommatidium, Mechanoreceptor, Trichobothria
16 Sep 2015
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Lab 1: mysteries of the atlantic coast: aqualab and the wanderers . Plankton small organisms living suspended in water not benthos (attached to bottom) nor nekton (swim against current) Phytoplankton photosynthetic unicellular organisms like protists and bacteria. Meroplankton: larval form is planktonic; some jellyfish: look at p. 3. Importance of planktons: food source (first to get eaten, photosynthesis produce o2, causes toxic bloom result in fish kills + shellfish poisoning. Plankton challenges amongst group: locomotion: cilia, jointed appendages or whole body contractions; speed vary, defense: threat are planktonic predators; being transparent; possessing protective spines; able to detect and escape from predators; being distasteful/toxic; diel swimming and being bioluminescent. Swimming behavior: diurnal vertical migration: move toward the light = positive phototactic (negative phototactic away from light, short, quick burst of movement, body denser than water thus sink. Lab 2: taxonomy and citizen science bumblebees and soil invertebrates.
