Freshwater sponges have been observed to have an annual life-cycle. With such a short timeframe, the sponges must gather enough nutrients for their offspring (gemmules), before dying off, gemmules will then break off from the dying parent sponge and attach themselves to a surface and prepare for diapause. Once the water conditions become favorable, the gemmules will then start forming tissue to represent a new parent sponge. It was predicted that the adult freshwater sponges and the gemmules would have different amounts of nutrient consumption; over their annual life-cycle. Adult sponges ended up losing their macronutrients over time, while the gemmules continued to gather the necessary amount of macronutrients to survive diapause. However, the water quality that the sponges were living in did influence how long the freshwater sponges lived and grew, but nutrients were unaffected by the environment they lived in.
|Commitee:||Judd, Timothy, Taylor, Michael, Kraemer, John|
|School:||Southeast Missouri State University|
|Department:||College of Science, Technology, & Agriculture|
|School Location:||United States -- Missouri|
|Source:||MAI 82/1(E), Masters Abstracts International|
|Keywords:||Freshwater sponges, Nutrients levels, Gemmules|
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