Howells Freshwater Mussels App

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TEXAS PIMPLEBACK (Quadrula petrina)Threatened (legally) TPWD – Proposed USFWS• Endemic to the Guadalupe-San Antonio and Colorado basins of CentralTexas.• Since 2004, this species has only been confirmed alive at two locations:– Lower Concho River – once the most abundant population known, but nowthreatened by upstream water retention and dewatering of its habitat.– Guadalupe River near Victoria - very few specimens found in 2009.
MEXICAN FAWNSFOOT (Truncilla cognata)Threatened (legally) TPWD – Proposed USFWS• Endemic to the Rio Grande, including Texas and Mexican tributaries.• Found west of Del Rio in 1972, but since then known only from < 20living or recently dead individuals found in a short stretch of theRio Grande in Webb County, Texas.– This area is heavily impacted by NAFTA and Homeland Security activity& general degradation of the Rio Grande, with a proposed reservoirbeing considered that would eliminate most or all of the remainingsurvivors.
Page 1 and 2: THE ECOLOGY OF FRESHWATER MUSSELS:S
Page 3 and 4: TERMINOLOGY - WHAT IS A MUSSEL?•
Page 5 and 6: FRESHWATER MUSSEL INTRODUCTION• F
Page 7 and 8: GENERAL FRESHWATER MUSSEL HABITAT
Page 9 and 10: IMPORTANCE IN THE AQUATIC ECOSYSTEM
Page 11 and 12: REPRODUCTIVE BIOLOGY - I• Sperm i
Page 13 and 14: REPRODUCTIVE BIOLOGY - IIIFemale mu
Page 15 and 16: MUSSEL SPECIES DIVERSITY - II• By
Page 17 and 18: DIVERSITY MEANS STABILITY!!!• The
Page 19 and 20: MAJOR REASONS FOR TEXAS MUSSEL DECL
Page 21 and 22: MAJOR REASONS FOR TEXAS MUSSEL DECL
Page 23 and 24: MINIMAL AND NON-REASONS FOR TEXASMU
Page 25 and 26: FUTURE THREATS TO TEXAS MUSSELS•
Page 27 and 28: THREATENED AND ENDANGERED SPECIES
Page 29 and 30: OUACHITA ROCK-POCKETBOOKArkansia wh
Page 31 and 32: TRIANGLE PIGTOE (Fusconaia lananens
Page 33 and 34: SANDBANK POCKETBOOK (Lampsilis satu
Page 35 and 36: LOUISIANA PIGTOE (Pleurobema riddel
Page 37 and 38: TEXAS HEELSPLITTER (Potamilus amphi
Page 39 and 40: GOLDEN ORB (Quadrula aurea)Threaten
Page 41: FALSE SPIKE (Quadrula mitchelli)Thr
Page 45 and 46: ADDITIONAL RARE MUSSELS IN TEXAS- A
Page 47 and 48: INFORMATION ON TEXAS MUSSELS• Fre

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