Author: Carol FurmanPublisher:
ISBN:
Category :
Languages : en
Pages : 140
Book Description
Mitochondrial DNA Variation in Striped Bass, Morone Saxatilis, from the Rappahannock River, Virginia
Author: Carol FurmanMitochondrial DNA Variation of Striped Bass (Morone Saxatilis Walbaum, 1792) in the Minas Basin
Author: Karen Anne VaudryExploring Control Region Variability in Striped Bass (Morone Saxatilis) Mitochondrial DNA for Use in Characterizing Populations
Author: Catherine Elise HebertPublisher:
ISBN:
Category :
Languages : en
Pages : 57
Book Description
Synopsis of Biological Data on Striped Bass, Morone Saxatilis (Walbaum)
Author: Eileen M. Setzler-HamiltonPublisher:
ISBN:
Category : Serranidae
Languages : en
Pages : 80
Book Description
Genetic Analyses of Striped Bass in the Chesapeake Bay
Author: Savannah MichaelsenPublisher:
ISBN:
Category : Striped bass
Languages : en
Pages :
Book Description
The striped bass (Morone saxatilis) is an anadromous fish distributed along the eastern coast of North America that currently supports one of the most lucrative and important commercial and recreational fisheries in the region. Since the recovery of the Atlantic stock after a collapse in the late 1970s, studies have focused on understanding the connectivity of major spawning grounds and improving methods of abundance estimation. Studies support strong site fidelity of striped bass to major estuaries along the Atlantic coast, but there has been disagreement about connectivity within the largest spawning ground, the Chesapeake Bay. Additionally, no estimates exist for striped bass abundance within the Chesapeake Bay. The objectives of my thesis were to examine the fine scale genetic population structure of striped bass within the lower Chesapeake Bay, and to test the feasibility of a novel, fishery-independent molecular methodology, close-kinship mark-recapture analysis (CKMR), to estimate spawning adult abundance within the Rappahannock River. Sampling of 1,132 adult striped bass and 389 young-of-year (YOY) striped bass was done during the 2016 and 2017 spawning seasons on major spawning grounds of the James, Mattaponi, and Rappahannock rivers. Twenty microsatellite loci were used to examine both the spatial genetic heterogeneity among the river systems and the temporal heterogeneity between sampling years within a river. Significant population pairwise FST values were recovered from 18 of the 21 pairwise comparisons. However, mean FST values between temporal comparisons were higher than those among spatial comparisons, suggesting a lack of biologically meaningful population structure among rivers. Additional analyses and a 30-year tagging data set also support a rate of connectivity among the major rivers high enough to maintain similar allele frequencies. Combined, the data support one genetic stock of striped bass within the lower Chesapeake Bay. The same suite of markers was then used to test the feasibility of CKMR to estimate adult abundance of striped bass within the Rappahannock River system. Using existing sampling programs, 371 spawning adults and 389 YOY were collected on the spawning and nursey grounds of the Rappahannock River in 2016. These samples yielded 2 parent-offspring pairs, resulting in an abundance estimate of 145,081 adult spawning striped bass. Additional analyses indicated that a relatively precise estimate (recovery of 50 POPs) would be made if sample sizes totaled 850 adults and 850 YOY. CKMR can be a feasible option of abundance estimation for striped bass. Overall, my study has provided the first estimate of abundance for Chesapeake Bay striped bass, and has provided strong support of a single, spawning stock of striped bass within the Chesapeake Bay.
Sea Grant Abstracts
Author: Striped Bass, Morone Saxatilis, Spawning Season and Grounds in Virginia River with Notes on Concomitant Fisheries
Author: Jack Gerald TravelsteadPublisher:
ISBN:
Category :
Languages : en
Pages : 15
Book Description
Variability of Striped Bass, Morone Saxatilis, Egg Characteristicis in Populations Along the Eastern Seaboard
Author: Lauren L. BergeyPublisher:
ISBN:
Category : Fish populations
Languages : en
Pages : 100
Book Description
Copeia
Author: Past and Present Genetic Structure of Striped Bass (Morone Saxatilis) in the Carolinas and Effects from Stock Enhancement
Author: Andrew Patrick AndersonPublisher:
ISBN:
Category : Fish stock identification
Languages : en
Pages : 44
Book Description
In order to properly manage striped bass within a geographic area, it is necessary to understand the genetic relationships of striped bass populations within and between watersheds to identify appropriate management units. Determining temporal changes in genetic relationships as well as the genetic characteristics of the populations is important in understanding how stock enhancement may have and continues to influence population units. A suite of 12 microsatellites was used to evaluate patterns of striped bass gene flow both spatially and temporally across the watersheds of North and South Carolina. Populations from the study watersheds were genetically diverse with the exception of the Savannah River which is recovering from a major population decline. Striped bass in the Roanoke and Cape Fear rivers represented a single population, most likely due to historical transfer stocking across the state from Roanoke River stock. Watersheds in South Carolina contained genetically distinct striped bass populations, although the difference between striped bass populations in the ACE and Santee-Cooper watersheds has substantially decreased over fifteen years, likely due to the stocking of Santee-Cooper fish into the ACE Basin. Conversely, supportive stocking of the Santee-Cooper system has helped to maintain genetic diversity of the population. The striped bass populations of the Carolinas are good examples of the various positive and negative effects from stock enhancement that must be considered and monitored when implementing or assessing a stock enhancement program.