Spotted Seatrout Biology and Population Trends in Georgia
Author: Georgia. Coastal Resources Division
Publisher:
Published: 2014
Total Pages: 8
ISBN-13:
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Author: Georgia. Coastal Resources Division
Publisher:
Published: 2014
Total Pages: 8
ISBN-13:
DOWNLOAD EBOOKAuthor: Stephen A. Bortone
Publisher: CRC Press
Published: 2002-07-30
Total Pages: 329
ISBN-13: 1420040790
DOWNLOAD EBOOKThe spotted seatrout is an important species not only for recreational and commercial fisheries, but also as an integral part of many estuarine ecosystems. As one of the few fishes that live its entire life within an estuarine system, the species has tremendous potential as a monitor or sentinel for estuarine conditions. Prepared by the foremost au
Author: Arnold G. Woodward
Publisher:
Published: 1990
Total Pages: 38
ISBN-13:
DOWNLOAD EBOOKAuthor: Linda Pushee Mercer
Publisher:
Published: 1984
Total Pages: 98
ISBN-13:
DOWNLOAD EBOOKAuthor: Timothy O'Donnell
Publisher:
Published: 2013
Total Pages: 75
ISBN-13:
DOWNLOAD EBOOKSpotted seatrout, a recreationally important fish in SC, have suffered substantial population declines during the cold winters of 2000, 2009, and 2010 when water temperatures dropped substantially below long-term averages. The repetitive occurrence of these winter-kills over a short timescale has prompted the SCDNR to investigate stock enhancement as a management option. A current evaluation of the genetic population structure of spotted seatrout in the southeastern U.S. is necessary prior to stocking. I assessed the genetic population structure across eight estuaries along the southeastern U.S. from NC to GA using 13 microsatellite markers. Results suggest significant population differentiation between fish in NC compared to SC and GA, with New River, NC serving as an area of integration between northern and southern spotted seatrout. Although I saw a significant break in gene flow between these areas, the overall pattern throughout the sampling range represents an increase in genetic differentiation related to the degree of geographic separation. The isolation-by-distance pattern supports fine-scale differences in the genetic composition of adjacent estuaries and suggests that stocking should be confined within 100 km of the locality of broodstock collection to maintain the natural gradient of genetic variation along the southeastern U.S. coast. The genetic diversity and effective population size of Charleston Harbor spotted seatrout were also evaluated temporally in relation to winter-kills. Spotted seatrout catch per unit effort significantly influenced the genetic diversity, although only minor changes were observed and the effective population size remained high. It appears that short overlapping generations allow spotted seatrout to genetically recover during population growth and maintain moderate levels of genetic diversity.
Author:
Publisher:
Published: 1992
Total Pages: 388
ISBN-13:
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Publisher:
Published: 1997
Total Pages: 388
ISBN-13:
DOWNLOAD EBOOKAuthor:
Publisher:
Published: 1992
Total Pages: 284
ISBN-13:
DOWNLOAD EBOOKAuthor: Linda Pushee Mercer
Publisher:
Published: 1984
Total Pages: 122
ISBN-13:
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