Download or read book Genetic Investigation of the Resurgence of American Shad in the Susquehanna River written by Robert W. Chapman and published by . This book was released on 1993 with total page 34 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Analysis of American Shad Entering Chesapeake Bay written by Bonnie L. Brown and published by . This book was released on 1991 with total page 39 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Yearly release of shad fry and of live pre-spawned adult shad from six other source rivers accompanied the lift operation beginning in 1982 ... In view of the apparent success of shad management efforts in Susquehanna River, a program of study was proposed to the Maryland DNR Chesapeake Bay Research and Monitoring Division's Power Plant Topical Research Program designed to examine population dynamics underlying the resurgent American shad population in Susquehanna River using molecular genetic techniques."--P. 4.

Download or read book Suitability of the Susquehanna River for Restoration of Shad written by and published by . This book was released on 1968 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Shad in the Susquehanna River Basin A Three Hundred Year History written by Richard Gerstell and published by Penn State Press. This book was released on 1998 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the International Symposium on Sea Turtle Conservation Genetics 12 14 September 1995 Miami Florida written by Brian W. Bowen and published by . This book was released on 1996 with total page 184 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Evaluation of American Shad Alosa Sapidissima Restoration Success in James River Virginia written by Aaron Aunins and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The American shad Alosa sapidissima has experienced severe declines throughout its native range due to habitat degradation, fragmentation, and over-fishing. Hatchery supplementation is often used for stock restoration, but the effects of supplementation on population structure and genetic diversity are rarely assessed. This study employed molecular markers to evaluate how supplementation of the James River American shad population with Pamunkey River origin larvae since 1994 has impacted genetic diversity and population structure. Population genetic parameters of other major Chesapeake Bay tributaries (Susquehanna, Rappahannock, Potomac, and Nanticoke) also were characterized. Prior to stocking, the James and Pamunkey populations exhibited subtle genetic differentiation, which was absent among post-supplementation samples, presumably due to the stockings. A similar situation was observed among other shad populations of Chesapeake Bay tributaries which were subtly differentiated in the 1990s but lacked any credible among-population differentiation among contemporary samples. Genetic diversity of the James River shad population was high prior to stocking, and remained high throughout years of intensive supplementation, yet the current population decline suggests that the James River shad population still has not recovered. Despite harvest curtailment, elimination of the ocean intercept fishery, and widespread supplementation efforts, Chesapeake Bay tributary American shad populations are collectively at their lowest levels in recorded history. Therefore, success of other restoration goals such as creation of fish passage in James River was investigated in a concurrent radio telemetry study to assess passage at Bosher's Dam fishway. Ninety-four American shad were radio-tagged on the spawning grounds below Bosher's Dam. Approximately one-half of the tagged shad were detected at the escapement receiver within 24 hours after tagging, and the average residence times of remaining shad were approximately one week. No tagged shad were detected above Bosher's Dam. These results imply that restricted passage through Bosher's Dam fishway may be an important factor in the failure of James River American shad to recover. Therefore, improving passage at migratory barriers such as Bosher's Dam, in conjunction with a continued Bay-wide fishing moratorium, may be more beneficial to shad restoration efforts in James and other Chesapeake Bay tributaries than continued supplementation.

Download or read book Suitability of the Susquehanna River for Restoration of Shad written by and published by . This book was released on 1968 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Experimental Transportation of Live Shad Past Susquehanna River Dams written by Charles H. Walburg and published by . This book was released on 1954 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book An Investigation of American Shad in the Upper Chesapeake Bay written by Maryland. Tidal Fisheries Division and published by . This book was released on 1983 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Suitability of the Susquehanna River for Restoration of Shad written by and published by . This book was released on 1968 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt: Biological studies conducted from 1963 to 1966 to determine the suitability of the Susquehanna River and its principal tributaries for the restoration of runs of American Shad are summarized herein. Objectives of the studies were to determine the suitability of the Susquehanna River between and above existing dams to support shad populations, study the behavior of young and adult shad between and above the impoundments, and the tolerances of egg and larval stages of shad to selected potential limiting factors of the environment.

Download or read book The History of Shad Fishing on the Susquehanna River and Current Efforts to Restore the Species written by Charles E. Myers and published by . This book was released on 1991 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Government Reports Announcements Index written by and published by . This book was released on 1995 with total page 804 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Brief History of Susquehanna River American Shad written by Pamela B. Haines and published by . This book was released on 1981 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Comparative Study of Juvenile American Shad Populations by Finray and Scute Counts written by Paul Ruffner Nichols and published by . This book was released on 1966 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Historical Review of the Shad Fisheries of North America written by Romeo Mansueti and published by . This book was released on 1953 with total page 312 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book American Shad Restoration in the Susquehanna River Watershed written by Michael L. Hendricks and published by . This book was released on 1993* with total page 1 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Review of American Shad Restoration Efforts on the Susquehanna River written by Ronald Howey and published by . This book was released on 1981 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: