Download or read book Evaluation of Stock Enhancement Potential for Summer Flounder Paralichthys Dentatus written by Gregory Todd Kellison and published by . This book was released on 2000 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Practical Flatfish Culture and Stock Enhancement written by Harry V. Daniels and published by John Wiley & Sons. This book was released on 2011-06-09 with total page 386 pages. Available in PDF, EPUB and Kindle. Book excerpt: Practical Flatfish Culture and Stock Enhancement is a key reference on culture methods, offering both practical applications and essential biological information. Throughout the text, the culture and stock enhancement issues are treated simultaneously, integrating these two perspectives. By looking to the outcomes of hatchery culture methods, including the economics and fish behavior, Practical Flatfish Culture and Stock Enhancement is a valuable tool in making management decisions. With chapters on disease diagnosis and treatment, culture methods for a number of specific species, and the use of flatfish as model organisms in laboratory settings, Practical Flatfish Culture and Stock Enhancement comprehensively covers the subject of culture and stock enhancement. The book is especially useful for aquaculture professionals, industry personnel, researchers, biologists, and aquaculture and fisheries management students.
Download or read book Stock Assessment Update of Summer Flounder for 2015 written by Mark Terceiro and published by . This book was released on 2015 with total page 18 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This assessment of summer flounder (Paralichthys dentatus) is an update through 2014 of commercial and recreational fishery catch data, research survey indices of abundance, and the analyses of those data. The summer flounder stock was not overfished but overfishing was occurring in 2014 relative to the biological reference points from the 2013 Stock Assessment Workshop (SAW) 57 benchmark assessment (NEFSC 2013; Figures 1-4). Fishing mortality on the fully selected age 4 fish ranged between 0.793 and 1.776 during 1982-1996 then decreased from 0.867 in 1997 to 0.284 in 2007. Since 2007 the fishing mortality rate has increased to 0.359 in 2014, 16% above the 2013 SAW 57 FMSY proxy = F35% = 0.309 (Figures 1-3). The 90% confidence interval for F in 2014 was 0.274 to 0.435. Spawning stock biomass (SSB) decreased from 24,134 mt in 1982 to 5,394 mt in 1989 and then increased to peaks of 50,357 mt in 2003 and 47,499 mt in 2010. SSB was estimated to be 40,323 mt in 2014, 65% of the 2013 SAW 57 SSBMSY proxy = SSB35% = 62,394 mt, and 29% above the 2013 SAW 57 1/2 SSBMSY proxy = 1/2 SSB35% = 31,197 mt (Figures 1-2, 4). The 90% confidence interval for SSB in 2014 was 35,486 to 49,918 mt. The average recruitment from 1982 to 2014 is 41 million fish at age 0. The 1983 and 1985 year classes are the largest in the assessment time series, at 75 and 62 million fish, while the 1988 year class is the smallest at only 10 million fish. After four below-average year classes in 2010-2013 (36, 20, 23, and 27 million fish), the 2014 year class is currently estimated to be average at 41 million fish (Figures 4-5)"--State of stock. [doi:10.7289/V57D2S4G (http://dx.doi.org/10.7289/V57D2S4G)]
Download or read book Assessment of Summer Flounder Paralichthys Dentatus 1993 written by Mark Terceiro and published by . This book was released on 1993 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stock Assessment of Summer Flounder for 2011 written by Mark Terceiro and published by . This book was released on 2011 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This assessment of the summer flounder (Paralichthys dentatus) stock along the Atlantic coast (Maine to North Carolina) is an update through 2010 of commercial and recreational fishery catch data, research survey indices of abundance, and the analyses of those data. The summer flounder stock was not overfished and overfishing was not occurring in 2010 relative to the biological reference points established in the 2008 SAW 47 assessment. The fishing mortality rate (F) was estimated to be 0.216 in 2010, below the fishing mortality threshold reference point = FMSY = F35% = 0.310. Spawning Stock Biomass (SSB) was estimated to be 60,238 metric tons (mt) = 132.802 million lbs in 2010, above the biomass target reference point = SSBMSY = SSB35% = 60,074 mt = 132.440 million lbs. Therefore, the summer flounder stock is considered to have reached the biomass target in 2010. The stock is currently under a rebuilding program with a deadline of January 1, 2013 (corresponding to the November 1, 2012 estimate of SSB)"--Executive summary.
Download or read book Stock Assessment of Summer Flounder for 2012 written by Mark Terceiro and published by . This book was released on 2012 with total page 148 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This assessment of the summer flounder (Paralichthys dentatus) stock along the U.S. Atlantic coast (Maine to North Carolina) is an update through 2011 of commercial and recreational fishery catch data, research survey indices of abundance, and the analyses of those data. The summer flounder stock was not overfished and overfishing was not occurring in 2011 relative to the biological reference points established in the 2008 SAW 47 assessment. The fishing mortality rate (F) was estimated to be 0.241 in 2011, below the fishing mortality threshold reference point = Fishing mortality producing Maximum Sustainable Yield (FMSY) = F35% = 0.310. Spawning Stock Biomass (SSB) was estimated to be 57,020 metric tons (mt) = 125.708 million lbs in 2011, 5% below the biomass target reference point = Spawning Stock Biomass at Maximum Sustainable Yield (SSBMSY) = SSB35% = 60,074 mt = 132.440 million lbs. The NMFS determined in November 2011 that the summer flounder stock reached the biomass target (i.e., was rebuilt) in 2010, based on the 2011 assessment update"--Executive summary.
Download or read book Stock Assessment of Summer Flounder for 2016 written by Mark Terceiro and published by . This book was released on 2016 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This assessment of summer flounder (Paralichthys dentatus) is an update through 2015 of commercial and recreational fishery catch data, research survey indices of abundance, and the analyses of those data. Reported 2015 landings in the commercial fishery were 4,843 mt = 10.677 million lbs, about 3% under the commercial quota (5,021 mt = 11.069 million lbs). Estimated 2015 landings in the recreational fishery were 2,209 mt = 4.870 million lbs, about 34% below the recreational harvest limit (3,347 mt = 7.379 million lbs). Total commercial and recreational landings in 2015 were 7,052 mt = 15.547 million lbs and total commercial and recreational discard losses were 1,233 mt = 2.718 million lbs, for a total catch in 2015 of 8,285 mt = 18.265 million lbs, about 20% below the 2015 Acceptable Biological Catch (ABC) = 10,329 mt = 22.772 million lbs"--Executive summary [doi:10.7289/V5/RD-NEFSC-16-15 (http://dx.doi.org/10.7289/V5/RD-NEFSC-16-15)]
Download or read book Stock Assessment of Summer Flounder for 2009 written by Mark Terceiro and published by . This book was released on 2009 with total page 146 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This assessment of the summer flounder (Paralichthys dentatus) stock along the Atlantic coast (Maine to North Carolina) is an update through 2008 of commercial and recreational fishery catch data, research survey indices of abundance, and the analyses of those data. Reported 2008 landings in the commercial fishery were 4,143 mt, about 3% under the commercial quota. Commercial discard losses in the otter trawl and scallop dredge fisheries are estimated from fishery observer data and have recently accounted for 5%-10% of the total commercial catch, assuming a discard mortality rate of 80%. Estimated 2008 landings in the recreational rod-and-reel fishery were 3,584 mt, about 25% over the recreational harvest limit. Recreational discard losses have recently accounted for 15%-20% of the total recreational catch, assuming a discard mortality rate of 10%. Total commercial and recreational landings in 2008 were 7,727 mt, and total catch was estimated at 9,287 mt."--Executive summary.
Download or read book Stock Assessment of Summer Flounder for 2003 written by Mark Terceiro and published by . This book was released on 2003 with total page 179 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This assessment of the summer flounder (Paralichthys dentatus) stock along the Atlantic coast (Maine to North Carolina) is an update through 2002/2003 of commercial and recreational fishery catch data, research survey indices of abundance, and the analyses of the data. For 2002, commercial and recreational fishery quotas were 6,612 mt and 4,408 mt, respectively, for a total of 11,020 mt. The reported commercial landings used in this assessment for 2002 were 6,407 mt, while estimated recreational landings were 3,610 mt, for a 2002 landings total of 10,017 mt. An analytical assessment (virtual population analysis, VPA) of commercial and recreational total catch at age (landings plus discards) was conducted. Indices of recruitment and stock abundance were developed from Northeast Fisheries Science Center winter, spring and autumn, Massachusetts spring and autumn, Rhode Island annual, Connecticut spring and autumn, New Jersey annual, and Delaware annual trawl survey data. Recruitment indices were also developed from young-of-year surveys conducted by the states of North Carolina, Virginia, and Maryland"--Summary.
Download or read book Stock Assessment of Summer Flounder for 1999 written by Mark Terceiro and published by . This book was released on 1999 with total page 178 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This assessment of the summer flounder (Paralichthys dentatus) stock along the Atlantic coast from Maine to North Carolina is an update through 1998 of commercial and recreational fishery catch data, research survey indices of abundance, and the analyses that use those data. The assessment was peer reviewed and accepted by the Mid-Atlantic Fisheries Management Council Scientific and Statistical Committee on July 8, 1999. An analytical assessment (virtual population analysis, VPA) of commercial and recreational total catch-at-age (landings plus discard) was conducted. Indices of recruitment and stock abundance were developed from . Northeast Fisheries Science Center winter, spring and autumn, Massachusetts spring and autumn. Rhode Island annual, Connecticut spring and autumn, New Jersey annual, and Delaware annual trawl survey data. Recruitment indices were also developed from young-of-year surveys conducted by the states of North Carolina, Virginia, Maryland, Delaware, New Jersey, Massachusetts, and Rhode Island. The 1982 and 1983 year classes are the largest in the 1982-1998 VPA time series, at 74 and 81 million fish, respectively. Recruitment declined from 1983 to 1988, with the 1988 year class the weakest at only 13 million fish. Recruitment since 1988 has improved, and the 1995 year class, at about 47 million fish, was the strongest since 1986. The 1997 and 1998 year classes appear to be below average, and are currently estimated to be about 23 and 26 million fish. VPA results indicate that the fishing mortality rate (F) on summer flounder was very high during 1982-1996, varying from 0.6 to 2.2. far in excess of the overfishing definition level (F m,,=0.26) defined by the MAFMC in Fishery Management Plan (FMP) Amendment 12. The fishing mortality rate peaked in 1992 at 2.2 (83% exploitation rate), and has since declined to 0.52 (37% exploitation rate) in 1998, but continues to exceed the management target. Total stock biomass reached 48.500 mt in 1983. before falling to 16,000 mt in 1989. Total stock biomass has increased substantially since 1991. and in 1998 was estimated to be 38,600 mt. The FMP Amendment 12 biomass target (BMSY) required to produce Maximum Sustainable Yield (MSY) is estimated to be BMSY =106,444 mt, and the FMP Amendment 12 biomass threshold of one-halfBMSY = 53,222 mt. The stock is overfished and overfishing is occurring with respect to the FMP Amendment 12 overfishing definition. The assessment indicates that the stock is rebuilding from the low levels observed during 1989-90"--Abstract.
Download or read book Stock Assessment of Summer Flounder for 2010 written by Mark Terceiro and published by . This book was released on 2010 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This assessment of the summer flounder (Paralichthys dentatus) stock along the Atlantic coast (Maine to North Carolina) is an update through 2009 of commercial and recreational fishery catch data, research survey indices of abundance, and the analyses of those data. Reported 2009 landings in the commercial fishery were 4,848 mt, about 1% under the commercial quota. Commercial discard losses in the otter trawl and scallop dredge fisheries are estimated from fishery observer data and have recently accounted for 5%-10% of the total commercial catch, assuming a discard mortality rate of 80%. Estimated 2009 landings in the recreational rod-and-reel fishery were 2,856 mt, about 12% under the recreational harvest limit. Recreational discard losses have recently accounted for 15%-20% of the total recreational catch, assuming a discard mortality rate of 10%. Total commercial and recreational landings in 2009 were 7,704 mt, and total catch was estimated at 9,017 mt."--Executive summary.
Download or read book Annotated bibliography and subject index on the summer flounder Paralichthys dentatus written by Paul G. Scarlett and published by . This book was released on 1982 with total page 20 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stock Assessment of Summer Flounder for 2006 written by Mark Terceiro and published by . This book was released on 2006 with total page 119 pages. Available in PDF, EPUB and Kindle. Book excerpt: "This assessment of the summer flounder (Paralichthys dentatus) stock along the Atlantic coast (Maine to North Carolina) is an update through 2005/2006 of commercial and recreational fishery catch data, research survey indices of abundance, and the analyses of the data. For 2005, commercial and recreational fishery final quotas were 8,246 mt and 5,434 mt, respectively, for a total of 13,553 mt. The reported commercial landings used in this assessment for 2005 were 7,765 mt, while estimated recreational landings were 4,550 mt, for a 2005 landings total of 12,315 mt. An analytical assessment (virtual population analysis, VPA) of commercial and recreational total catch at age (landings plus discards) was conducted. Indices of recruitment and stock abundance were developed from Northeast Fisheries Science Center winter, spring and autumn, Massachusetts spring and autumn, Rhode Island annual, Connecticut spring and autumn, New Jersey annual, and Delaware annual trawl survey data. Recruitment indices were also developed from young-of-year surveys conducted by the states of North Carolina, Virginia, and Maryland"--Summary.
Download or read book Stock Discrimination of Summer Flounder Paralichthys Dentatus in the Middle and South Atlantic Bights written by and published by . This book was released on 1983 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Synthesis of Summer Flounder Habitat Parameters written by Kenneth W. Able and published by . This book was released on 1994 with total page 160 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stock Identification of Summer Flounder Paralichthys Dentatus in the Southern Mid Atlantic Bight written by Joseph C. Desfosse and published by . This book was released on 1990 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: A total of 12, 339 summer flounder were tagged from Virginia waters during 1987-89. A total of 874 were recaptured for an overall return rate of 7 . 1%. Most of the returns (48.5%) were from Virginia waters, or areas to the south. A smaller number (21.6%) were from areas north and offshore of Virginia. Another 29. 9% were recaptured and returned with inadequate location data. Examining only the returns with adequate location data, yielded a separation of 69.2% and 30.8% between the groups. No differences were noted in the sizes at tagging between these groups. Tagged flounder held at VIMS exhibited no behavioral differences from untagged fish. No differences in growth and mortality were noted in these fish. The sex ratio of males to females was 1:1.16. Male summer flounder reached 50% maturity at approximately 280 mm, while females reached 50% maturity at about 330 mm. A total of 1040 flounder were successfully aged. The population was dominated by young fish (0- 2 years old). The compression of age structure i s indicative of a population being heavily overfished.
Download or read book Stock Enhancement and Sea Ranching written by Kenneth M. Leber and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 584 pages. Available in PDF, EPUB and Kindle. Book excerpt: The collapse of many of the World’s fisheries continues to be of major concern and the enhancement of fish stocks through techniques such as ranching is of huge importance and interest across the globe. This important book, which contains fully peer reviewed and carefully edited papers from the 2nd International Symposium in Stock Enhancement and Sea Ranching is broadly divided into sections covering the following areas: The present situation of stock enhancement Seed quality and techniques for effective stocking Health management of hatchery stocks Methods for evaluating stocking effectiveness Population management in stock enhancement and sea ranching Management of stocked populations Ecological interactions with wild stocks Genetic management of hatchery and wild stocks Socio-economics of stock enhancement Case studies Stock Enhancement and Sea Ranching has been written and edited by some of the world’s foremost authorities in fisheries science and related areas and is essential reading for all fisheries scientists throughout the World. Fish biologists, marine and aquatic scientists, environmental biologists, ecologists, conservationists, aquaculture personnel and oceanographers will all find much of use and interest within this book. All libraries within universities and research establishments where these subjects are studied and taught should have copies of this book on their shelves.
