jack c koch

scientist | creator | educator

Welcome to Jack's webpage. Jack is a Ph.D candidate in Virginia Weis's Lab at Oregon State University. His research examines the effects of climate change and the environment on the symbiotic relationship between the temperate sea anemone Anthopleura elegantissima, its bacterial community, and its microalgal symbionts: Breviolum muscatinei (formerly Symbiodinium muscatinei) (Clade B Dinoflagellate) and Elliptochloris marina (Trebouxiophyceae).


The Green Giant

Sea anemones from the genus Anthopleura live in temperate waters and join in a symbiotic relationship with two species of microalgae. This individual is under an epifluorescence blue light causing autofluorescence (glowing) of special proteins called green fluorescent proteins (GFP) in the tissue of the anemone. This individual is approximately three and a half inches from tentacle tip to tentacle tip.

One Mouth, Many Arms

Aiptasia pallida is a tropical sea anemone that joins in a symbiotic relationship with microalgae. The microalgae are what gives the anemone its brown color. This individual is approximately two inches diameter from tentacle tip to tentacle tip. Sea anemones use their many tentacles to capture food and pass it to their mouth. Anemones that have microalgal symbionts however, can get some nutrition from their symbiotic patners.