jack c koch

scientist | creator | educator

Welcome to Jack's webpage. Jack is a Postdoctoral Research Associate at the Aquatic Germplasm and Genetic Resources Center (AGGRC), a part of the Louisiana State University Agricultural Center. In collaboration with the National Resource for Aplysia (University of Miami), he is working to develop a cryopreservation germplasm repository for the biomedical model system Aplysia californica, a sea hare used to research neural development, behavior, and aging.


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.