DaphniaProposal - Daphnia Feeding Response in an Acidified...

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Daphnia Feeding Response in an Acidified Environment Spencer Callaghan Pinal Patel Amber Reeves Introduction: Daphnia belong to the Cladocerans group. They are commonly known as water fleas because they swim with jerky motion. Their body is covered carapace that is transparent in most species. They are mostly found in the benthos but are also found in the water column. Daphnia are free swimmers, they use pair of antennas to swim through the water. They are filter feeders that use a filtration system to collect and concentrate small particles of food from a relatively large volume of water. They feed on phytoplankton organisms such as volvox, bacteria, and yeast. Daphnia is food for hydra, and fishes. Many aquatic organisms can be sensitive to even subtle changes in their environment especially in terms of changes in acidity. Most species of Daphnia are found in mostly freshwater, moderately acidic, large bodies of water such as lakes or swamps. With changing climate conditions and environmental pollutants, it is very likely that many aquatic species will at some point become exposed to variances in their habitats. In order to understand how these changes will affect the ecosystems of these watersheds, it is important that research is done to study the effects of these environmental changes. Daphnia are considered by some to be an indicator species for their particular ecosystem. (U.S. Environmental. ..) In other words, these organisms can serve as an early warning system in terms of pollution and help us to assess the quality of the environment. This means that the more
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This note was uploaded on 08/10/2011 for the course BIOL 1108L taught by Professor Stanger-hall during the Spring '09 term at University of Georgia Athens.

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DaphniaProposal - Daphnia Feeding Response in an Acidified...

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