Measurable Investigation of Host Fish for the Round Pigtoe Mussel ( Plueurobema coccineum ) - PowerPoint PPT Presentation

statistical study of host fish for the round pigtoe mussel plueurobema coccineum l.
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Measurable Investigation of Host Fish for the Round Pigtoe Mussel ( Plueurobema coccineum ) PowerPoint Presentation
Measurable Investigation of Host Fish for the Round Pigtoe Mussel ( Plueurobema coccineum )

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Measurable Investigation of Host Fish for the Round Pigtoe Mussel ( Plueurobema coccineum )

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  1. Statistical Study of Host Fish for the Round Pigtoe Mussel (Plueurobema coccineum) By Meggie Marzec www.darbycreeks.org/Round%20pigtoe%20Big%20Darby%208-2-03%20005.jpg

  2. Introduction • Mussels clean rivers and streams • Indicate health of river system • Round Pigtoe threatened in MN, native to St. Croix www.winona.edu/geology/MRW/mrwimages/DallesStCroix.jpg

  3. Introduction www.tpwd.state.tx.us/nature/education/tracker/mussels/images/reproduction.gif

  4. Introduction Glochidia with and without tissue Previous studies show there may be a difference Photo taken by Dr. Miller

  5. Previous Studies • Spotfin shiner, common shiner and hornyhead chub are host fish • Golden shiner and creek chub are marginal host fish • From 2003 Host Fish Suitability Trial

  6. Previous Studies • 2003 Study, glochidia without and with tissue as life cycle stages

  7. Goals • Find which host fish is statistically stronger: hornyhead chub or common shiner • Find new host fish • Study glochidia without tissue and with tissue as life cycle stages

  8. Procedure • Collect host fish and mussels from St. Croix River • Infest fish with glochidia and check siphonate every three days • Fish in statistical study kept in individual aquaria

  9. Results Table 1: Percent Transformation for hornyhead chub and spotfin shiner

  10. Results

  11. Results

  12. Results

  13. Results

  14. Conclusions • Common shiner, mimic shiner, blackchin shiner and longnose dace are host fish • Not able to determine difference between glochidia without tissue and with tissue • It appears that related fish host the same mussel

  15. Practical Applications • Results of the statistically stronger host fish could be used to reintroduce the Round Pigtoe mussel by making raising mussels in a laboratory setting more efficient • By finding that related fish host the same mussel, host suitability trials can be simplified

  16. Future Studies • Repeat the study with many species of fish from the same family • Conduct a Histological study with pictures of mussels at different life cycle stages to deterimine if glochidia without and with tissue are separate life cyce stages

  17. Acknowledgements • Mark Hove • Kari, Vik and Kaia • Ms. Fruen • Dr. Miller

  18. Acknowledgements

  19. Statistical Study of Host Fish for the Round Pigtoe Mussel (Plueurobema coccineum) By Meggie Marzec www.darbycreeks.org/Round%20pigtoe%20Big%20Darby%208-2-03%20005.jpg