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Master Thesis

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Julia Schmidt-Petersen

on 14 April 2013

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Transcript of Master Thesis

My name is
Julia Schmidt-Petersen This is my project for the Master Thesis Do symbionts make corals tasty? created by
Julia Schmidt-Petersen What are corals? Snails of the genus Coralliophila
feed on coral tissue. Material and methods The predator Data processing First, let's have a closer look at corals themselves. ? One colony consists of many individual coral polyps. Lets have a closer look at one polyp. What we see as "one coral" is in fact a colony of individual coral polyps. Corals are animals, related to jellyfish. These fish won't harm the corals. In fact, there are only a few animals that can feed on corals. one coral
colony Some facts
about corals 1 polyp = 1 animal Corals host microscopic
algae in their tissue. The coral provides shelter for the algae. The algae provide food for the coral. Living together is an advantage for both, coral and algae. symbiont strain depth coral species snail abundance more data ...and this is how they look in real life The snails have no teeth or tongue, but a so called proboscis, with which they can suck in coral tissue. snail coral polyp proboscis and The aim of the study Genus:
Symbiodinium This relationship is called symbiosis. The same coral species can associate with different strains of algae. Some strains are better adapted to heat,
others enable faster growth of the coral. Bocas del Toro Sampling site:
Panama Sampling design Samples will be taken... ...we will lay out rectangles of
1 x 5 m at each depth... ...we will collect data about
depth, corals, snails... ...and sample corals to identify the associated symbiont strain. 1 m 5 m ...from 1 m depth... ...to... ... 9 m depth. No Yes Yes No No Yes publishing Do symbionts make corals tasty? Changes in symbionts with depth? Changes in snail distribution with depth? ...if snails prefer to eat corals associated with a specific symbiont strain. ...is to find out... julia.schmidtp@ugent.be Prof. Dr. Olivier De Clerck Prof. Dr. Rachel Collin Supervisor: Local promoter: Master Thesis:
Do corals make symbionts tasty? Secondary advisor: Prof. Dr. Haris Lessios
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