Howells Freshwater Mussels App

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RARE MUSSELS IN TEXAS• One species legally listed by USFWS as Federally Endangered(Ouachita rock-pocketbook) was also legally listed by TPWD asEndangered in the 1990s.• In December 2009, TPWD listed 15 species as legally Threatened.• Concurrently, USFWS began looking at 11 of these species– Three species were not included due to taxonomic status questions thatwere part of ongoing DNA analyses & two were already a candidates.• Other Texas mussel species are also extremely rare, but have not beenlegally listed as such.• <strong>Mussels</strong> that are legally listed in Texas include:
OUACHITA ROCK-POCKETBOOKArkansia wheeleriEndangered (legally) USFWS & TPWD• Generally restricted to the Kiamichi R., OK, and Little River, OK/AR.• One shell was found in each of two streams in Lamar Co., Texas, butno living populations are known to have been or to be present in Texas.
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: THREATENED AND ENDANGERED SPECIES
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 and 42: FALSE SPIKE (Quadrula mitchelli)Thr
Page 43 and 44: MEXICAN FAWNSFOOT (Truncilla cognat
Page 45 and 46: ADDITIONAL RARE MUSSELS IN TEXAS- A
Page 47 and 48: INFORMATION ON TEXAS MUSSELS• Fre

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