Boucher, Jason M.

McBride, Richard S.

English

ScholarWorks@UMass Amherst

University of Massachusetts AmherstScholarWorks@UMass AmherstInternational Conference on Engineering andEcohydrology for Fish PassageInternational Conference on Engineering andEcohydrology for Fish Passage 2016Jun 22nd, 10:45 AM - 11:00 AMCase Studies VI: Dynamics of the 2015 SpawningMigration of American Shad (Alosa sapidissima) inthe Connecticut RiverJason M. BoucherNational Marine Fisheries ServiceRichard S. McBrideNational Marine Fisheries ServicesFollow this and additional works at: https://scholarworks.umass.edu/fishpassage_conferenceThis Event is brought to you for free and open access by the Fish Passage Community at UMass Amherst at ScholarWorks@UMass Amherst. It hasbeen accepted for inclusion in International Conference on Engineering and Ecohydrology for Fish Passage by an authorized administrator ofScholarWorks@UMass Amherst. For more information, please contact scholarworks@library.umass.edu.Boucher, Jason M. and McBride, Richard S., "Case Studies VI: Dynamics of the 2015 Spawning Migration of American Shad (Alosasapidissima) in the Connecticut River" (2016). International Conference on Engineering and Ecohydrology for Fish Passage. 5.https://scholarworks.umass.edu/fishpassage_conference/2016/June22/5Dynamics of the 2015 spawning migration of American shad (Alosa sapidissima) in the Connecticut RiverJason M. Boucher, PhD1,2Richard S. McBride, PhD1Northeast Fisheries Science CenterFish Passage Conference 2016June 22, 20161. National Marine Fisheries Service, Northeast Fisheries Science Center, Population Biology Branch2. Integrated StatisticsAmerican shad (Alosa sapidissima)• Range from Canada to the St. Johns River, Florida• Home to natal river to spawn• Latitudinal variability in parity:• St. Johns River, FL: 0% • York River: 23% • Connecticut River: 38%• St. John River, NB: 73% U.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 2* Bellow FallsProject Scope & Methods• Major goals• Estimate & compare annual fecundity• Estimate spawning rates and batch fecundity• Estimate ages and parity (virgin/repeat) • Estimate condition• Aging and fecundity workup• Aging• Scales by CT-DEEP (Jacque Benway) • Otoliths by MA-DMF (Scott Elzey)• Reproductive biology• Ovary histology (Mass Histology, E. Towle)• Oocyte size distribution (E. Towle)• Fecundity (E. Towle)• Condition by USGS (Steve McCormick)U.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 3Sampling Protocol & LocationsU.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 4Lower RiverHadley Power StationCabot Power StationVernon Dam• Weekly from  4/30 – 6/30• Two locations per week• Sample from 0800 – 1300• 30 females and 15 malesFemales MalesFish CollectedU.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 5Lower RiverHadley Power StationCabot Power StationVernon Dam• Total of 640 individuals:• 239 males• 401 females45 4178 45177 9628 541 3532 17Sex Fork Length Body Weight Somatic Weight Gonad WeightMeans Group Means Group Means Group Means GroupFemale 450.56 a 1264.93 a 1094.20 a 170.68 aMale 403.03 b 828.75 b 779.40 b 49.35 bFemales Males Sex RatioSex RatioU.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 6Lower RiverHadley Power StationCabot Power StationVernon Dam 50 101 0.331101 128 0.441195 176 0.52641 107 0.27731 46 0.40328 5 0.848439 559 0.440Females Males Sex Ratio00.10.20.30.40.50.60.70.80.91Lower River Holyoke Cabot Vernon Cabot - DS Holyoke - DSMore MaleMore FemalesFemales MalesSize DistributionU.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 7Lower RiverHadley Power StationCabot Power StationVernon Damp > 0.05p < 0.05p < 0.05p < 0.05p < 0.05p < 0.05Females MalesOtolith-Derived AgesU.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 8Lower RiverHadley Power StationCabot Power StationVernon Dam*No significant difference in age between locations or timeMean = 5.14 Mean = 4.58Mean age-at-maturity (Leggett & Carscadden 1978):Females: 4.8 Males: 4.1Age truncationFemales MalesRepeat SpawnersU.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 9Lower RiverHadley Power StationCabot Power StationVernon DamRatio of repeat spawners:• Total: 13:640 2%• Females: 10:401 2.5%• Males:  3:239 1.2%• 6/3 - 1• 5/13 1 -• 5/19 2* -• 5/26 1 -• 6/18 - 1 (ds)• 4/30 2 1• 5/5 3 -• 5/6 1* -Historical data:38%32%46%Up DownActively Spawning FemalesU.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 10Lower RiverHadley Power StationCabot Power StationVernon Dam 391536* Bellow FallsU.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 11Connecticut River PAFsStudy Method Annual FecundityLeggett (1969) Determinate 256,000McBride et al (in prep) Determinate 303,000 + 73,400 Current study Indeterminate 325,100 + 11,300 Student’s t-test, P > 0.05Potential Annual Fecundity (1000s)100806040Frequency200200 300 400 500 600Annual Fecundity Estimates0100200300400500St. Johns River(FL)York River ConnecticutRiverSt. John River(NB)Miramichi RiverPotential Annual Fecundity (n)ThousandsU.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 12U.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 13Lower RiverHadley Power StationCabot Power StationVernon Dam“… intraspecies variation in reproductive characteristics represents a fine tuning of life history to long term features of the environment by natural selection.”  – Leggett & Carscadden (1978)Acknowledgements• USGS• Steve McCormick• Ted Castro-Santos• Shannon Bayse• Amy Regish• NMFS• Wendy Gabriel• William McDavitt• Emilee Towle• Mark Wuenschel• Jakub Kircun• Robert  Johnston• USFWS• Michael Bailey• Ken Sprankle• CT DEEP• Tom Savoy• Jacque Benway• MA DMF• Scott Elzey• Holyoke Gas & Electric• Richard Murray• First Light• Robert Stira• Joe Lucas• Transcanada• Donald Dionne• Jennifer Griffin• John Ragonese• Stephen Gottardi• Normandeau Associates• Steve Leach• Brittney LaFlamme• Commercial Shad Fishermen• John Rogers• Mass HistologyU.S. Department of Commerce | National Oceanic and Atmospheric Administration | NOAA Fisheries | Page 14

Case Studies VI: Dynamics of the 2015 Spawning Migration of American Shad (Alosa sapidissima) in the Connecticut River

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Case Studies VI: Dynamics of the 2015 Spawning Migration of American Shad (Alosa sapidissima) in the Connecticut River

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