Striped Bass Morone Saxatilis (Walbaum, 1792) Population Demographics and Mixing in the Bay of Fundy PDF Download

Author: Lita L. O'Halloran
Publisher:
ISBN:
Category : Striped bass
Languages : en
Pages : 0

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Author: Lita O'Halloran
Publisher:
ISBN:
Category :
Languages : en
Pages :

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The use of population dynamics in fisheries management is a crucial tool to understand trends and appoint sustainable harvest rates. In the Bay of Fundy (BoF), Striped Bass Morone saxatilis is a highly prized recreational fishery and aboriginal FSC fish. Striped Bass are found throughout Minas Basin, where they are believed to mix with U.S.A. Striped Bass populations. Mixing of these populations creates difficulties in determining population structure which is required for implementation of effective conservation actions for Canadian stocks. Here we use catch data from 1981-2019, as well as mark-recapture to answer information gaps on population structure. Specifically, we address information gaps on movement, length frequency, weight-length relationships, and estimating growth using tag data. Our data suggests that 99.5% of bass tagged over 7 years did not leave the Minas Basin. Growth models were comparable to traditional length-at-age models with Francis and Wang models outperforming Fabens models. 183 tissue samples were analyzed using next generation sequencing (NGS), single nucleotide polymorphisms (SNP)s and microsatellites and summary of mark-recapture studies since the 1930s to determine the presence and abundance of other populations in the Minas Basin, and genetic origin of bass in Labrador and Annapolis River. Of the bass chosen for higher probability of migrancyanalyzed using SNPs ,99% were of Shubenacadie River origin, with one U.S.A. migrant, and no hybridization detected. Proportions in Annapolis River were 2.4% for both Saint John River and U.S.A. origin and 95.2% Shubenacadie River origin. Labrador bass (n=8) were of Miramichi River origin, which is the first genetic evidence of Striped Bass expanding past its native northern range. Across the entire Atlantic coast into the BoF 48 (0.002%) transboundary recaptures have occurred from published studies using over two million external tags. These results indicate that U.S.A. migrants present in the Minas Basin are insignificant and the adjustment necessary for the Shubenacadie River population would be negligible.

Author: James M. Barkuloo
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 20

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Striped bass from the Apalachicola and St. Johns Rivers in Florida were compared taxonomically with striped bass from other drainages on the Atlantic coast and Gulf of Mexico. Both rivers contain endemic striped bass populations. The Apalachicola River population was found to be a separate race. Sexually mature striped bass from the St. Johns were induced to spawn using hormonal injections. Few fry were produced due to extreme temperature fluctuations. Reproduction requirements and factors limiting the abundance of striped bass in Florida are discussed.

Author: Eileen M. Setzler-Hamilton
Publisher:
ISBN:
Category : Serranidae
Languages : en
Pages : 80

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Author: Jeremy E. Broome
Publisher:
ISBN:
Category :
Languages : en
Pages :

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The Bay of Fundy (BoF) Striped Bass population, currently assessed as Endangered by COSEWIC, is generally not well understood. Despite increased overall research effort, the marine phase of the population has received limited investigation. Two potential threats facing the population, an unmonitored recreational fishery and encounter risk associated with testing of tidal in-stream energy conversion (TISEC) devices, were investigated using creel survey, mark-recapture tagging, and acoustic telemetry techniques. Recreational catch was dominated by 3-4 year olds (comprising 75% of the catch). Limited capture of bass of retainable size (≥68cm TL) resulted in high rates of catch and release (>95%). Recaptures indicated a limited summer-fall movement range, with evidence of site residency and inter-annual site fidelity. VEMCO telemetry equipment experienced reductions in range and detection efficiency as current speed increased. Current speed, tidal stage, tag power, and distance were significant predictors of detection success. Of 80 acoustically tagged bass, 53 were detected within Minas Passage; 26 were detected only within Minas Basin. Larger bass (>55 cm TL) released from the Stewiacke River site were present within Minas Passage and the FORCE site more regularly and at deeper depths (surface to >95m) than smaller bass (

Author: Committee on the Status of Endangered Wildlife in Canada
Publisher: Committee on the Status of Endangered Wildlife in Canada
ISBN: 9780662398417
Category : Rare fishes
Languages : en
Pages :

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Author: Robert M. Lewis
Publisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 60

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Author: William Albert Lund
Publisher:
ISBN:
Category : Striped bass
Languages : en
Pages : 36

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Author: Jeannette A. Whipple
Publisher:
ISBN:
Category : Estuarine ecology
Languages : en
Pages : 56

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Author: Prichar Sommani
Publisher:
ISBN:
Category : Fish population
Languages : en
Pages : 266

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