Geoffrey Smith (PA Fish and

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Why low DO?• Respiratory demand by aquatic plants• Coincident with longest photoperiod of the year andwarmest water temperatures• Saturation values also the lowestPhoto: S. Gearhart - PFBC
High pH• A product of excessivephotosynthesis• Wide daily variation• Stressful max values• Affects osmoregulatoryfunction of fish• Many metals and othercontaminants becomesoluble again
Page 1 and 2: Photo: J. Chaplin - USGS PA Water S
Page 3 and 4: Onset of disease outbreak• First
Page 5: Diagnosis• Bacterial infections b
Page 8 and 9: Water quality• Paired main channe
Page 12 and 13: Why increases in algal productivity
Page 14 and 15: Largemouth Bass Virus (LMBV)• Gen
Page 16 and 17: Complex relationship of factors•
Page 18 and 19: Intersex• Endocrine disruption•
Page 20 and 21: Lesions on adult smallmouth bass•
Page 22 and 23: Papillomas• Very low proportion o
Page 24 and 25: Acknowledgements• Co-authors and
Page 27: NoSurveysNoSurveysNo Survey

Geoffrey Smith (PA Fish and

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