Download or read book The 2015 Stock Assessment of Red Drum Sciaenops Ocellatus in Florida written by and published by . This book was released on 2015 with total page 95 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report assesses the status of the Red Drum populations found in four regions along the Atlantic and Gulf coasts of Florida. Red Drum population dynamics are described for the period 1950-2013 utilizing all available information on catch, effort, relative abundance, and size/age composition.

Download or read book Development of Methods for Non lethal Health Assessment of the Red Drum Sciaenops Ocellatus Inside NASA s Kennedy Space Center No take Fisheries Reserve written by Carla M. Garreau and published by . This book was released on 2012 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt: Results from this study illustrate the potential value of future comparisons of red drum near the study area, the range of the species, and as a model for other sciaenids.

Download or read book Life history Characteristics and Fishery Dynamics of Red Drum Sciaenops Ocellatus in the North central Gulf of Mexico written by Corbin Frank Bennetts and published by . This book was released on 2018 with total page 284 pages. Available in PDF, EPUB and Kindle. Book excerpt: Red drum (Sciaenops ocellatus) are highly targeted recreationally in the Gulf of Mexico, and support a small commercial fishery in Mississippi. Despite their popularity, the stock is assessed using data limited approaches that necessitate accurate life history information. I estimated the year-specific and year-aggregated escapement rates for the Mississippi stock (years 2004 to 2015), which were sensitive to mortality estimation methods; year-aggregated estimates were 6.9 to 28.2 % depending on the method, but temporal patterns were consistent. I then addressed concerns with previously estimated life-history characteristics by describing the sex-specific growth and reproductive dynamics. The three-parameter von Bertalanffy growth function was the best candidate length-at-age model, with no significant difference in overall growth between sex-specific relationships, but females had a larger mean asymptotic length, and four candidate models showed significant sexual dimorphism. I described Red Drum as batch spawners, with 3.7 days between successive spawns during the spawning season (August and September). The age at 50% maturity was around age-3 y in both sexes, but spawning capability was not evident until around age-6 y. The carbon (delta C-13) and nitrogen (delta N-15) stable isotope composition of Red Drum muscle tissue was more enriched in carbon offshore and was significantly different with respect to reproductive phase. Mean and variance of delta N-15 and variance of delta C-13 was significantly different between fish

Download or read book Status of the Red Drum Stock on the Atlantic Coast written by Douglas S. Vaughan and published by . This book was released on 1993 with total page 37 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Status of the Red Drum Stock of the Atlantic Coast written by Douglas S. Vaughan and published by . This book was released on 1992 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Status of the Red Drum Stock on the Atlantic Coast Stock Assessment Report for 1995 written by Douglas S. Vaughan and published by . This book was released on 1996 with total page 50 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessing the Genetic Influences of Red Drum Sciaenops Ocellatus Stock Enhancement in South Carolina written by Christopher Mealey and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The South Carolina Department of Natural Resources began a stock enhancement research program for red drum Sciaenops ocellatus to explore stock enhancement as a potential management tool in addition to restrictive fishing regulations by augmenting the abundance of juveniles available for recreational harvest in SC estuaries. Stock enhancement has been historically criticized for its potential to decrease genetic diversity and increase levels of inbreeding in the wild population. Between 1999 and 2011, approximately six million juvenile red drum and 100 million larvae were stocked into the Charleston Harbor estuary. Standardized sampling of sub-adults within the estuary (total N=3,361), as well as the spatially separate offshore adult population (total N=796) found proportions of stocked fish as high as 49.6% within a single year-class and up to 12% within the local spawning population, respectively. This study evaluated the genetic influences of stock enhancement on the wild adult population by calculating a suite of genetic diversity metrics using microsatellite loci, and then utilized these metrics to validate an individual-based model (IBM) to forecast the genetic influences of future stocking strategies in SC. No statistically significant differences were found among year-classes (sub-adult samples) or collection years (adult samples) for any genetic diversity metric, suggesting that responsible stocking of red drum as small juveniles has not altered the genetic diversity among wild adults in SC. Simulations monitored changes in genetic diversity under several stocking scenarios, which included: the effective number of breeders in the hatchery (2, 6, and 10), the contribution of stocked fish to each year-class in the wild (30, 60 and 90%), and the census size of the wild adult population (500, 5,000 and 50,000). The IBM accurately simulated empirical estimates of genetic diversity from 1999 to 2011, and could therefore inform responsible stocking strategies for continued red drum stocking efforts in South Carolina.

Download or read book Association of Large Juvenile Red Drum Sciaenops Ocellatus with an Estuarine Creek on the Atlantic Coast of Florida written by Douglas H. Adams and published by . This book was released on 2000 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Feeding Success and Prey Consumption in Presettlement Red Drum Sciaenops Ocellatus written by Justin Micheal Krebs and published by . This book was released on 1999 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Habitats and Biota of the Gulf of Mexico Before the Deepwater Horizon Oil Spill written by C. Herb Ward and published by Springer. This book was released on 2017-06-26 with total page 948 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is open access under a CC BY-NC 2.5 license. The Gulf of Mexico is an open and dynamic marine ecosystem rich in natural resources but heavily impacted by human activities, including agricultural, industrial, commercial and coastal development. The Gulf of Mexico has been continuously exposed to petroleum hydrocarbons for millions of years from natural oil and gas seeps on the sea floor, and more recently from oil drilling and production activities located in the water near and far from shore. Major accidental oil spills in the Gulf are infrequent; two of the most significant include the Ixtoc I blowout in the Bay of Campeche in 1979 and the Deepwater Horizon Oil Spill in 2010. Unfortunately, baseline assessments of the status of habitats and biota in the Gulf of Mexico before these spills either were not available, or the data had not been systematically compiled in a way that would help scientists assess the potential short-term and long-term effects of such events. This 2-volume series compiles and summarizes thousands of data sets showing the status of habitats and biota in the Gulf of Mexico before the Deepwater Horizon Oil Spill. Volume 2 covers historical data on commercial and recreational fisheries, with an analysis of marketing trends and drivers; ecology, populations and risks to birds, sea turtles and marine mammals in the Gulf; and diseases and mortalities of fish and other animals that inhabit the Gulf of Mexico.

Download or read book Tolerance of Red Drum Sciaenops Ocellatus Fingerlings to Rapidly Decreasing Water Temperatures written by Andrew Ewell Whitehurst and published by . This book was released on 1990 with total page 96 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recruitment of Stocked Juvenile Red Drum Sciaenops Ocellatus to the Adult Population in South Carolina written by Joy Gerhard and published by . This book was released on 2010 with total page 63 pages. Available in PDF, EPUB and Kindle. Book excerpt: Red drum (Sciaenops ocellatus) is a popular food and recreational fishery species along the southeast U.S. and Gulf of Mexico coasts. Although contribution of stocked fish to the wild population in South Carolina has been measured immediately following stocking up to age two, evaluation of stocked fish recruitment to the adult population has not yet been examined and therefore is the focus of this research. Small juveniles (~30 mm TL) were stocked in the Ashley and Wando Rivers of Charleston Harbor in 1999 - 2002 by the South Carolina Department of Natural Resources (SCDNR). Five years after initial stocking (2004 - 2008), adults were sampled via longline nearshore of four major South Carolina estuaries, and tissue samples were collected for genetic analysis. Genotypes of sampled fish were compared to those of broodstock and it was determined that small stocked juveniles do recruit to the adult stock in South Carolina, with a highly localized contribution near Charleston Harbor. Contribution of the identified stocked fish was estimated via several different methods. Contribution to the stocked year classes in particular were estimated by using length data as well as otolith-based age data collected before and during the sampling period. The percentage of the Charleston Harbor adult population identified as stocked fish from three stocked year classes ranged from 5.8% to 66.0% with the most preferred method, using age-length keys, yielding a contribution estimate of 34.9%. Such a high contribution has the potential to cause deleterious genetic and reproductive effects, though the broodstock husbandry and stocking protocol used by SCDNR is designed to minimalize these effects. Additionally, contribution of this magnitude might allow stocked fish to be used as biomarkers to gain a better understanding of the basic population parameters of adults in South Carolina for management.

Download or read book An electrophoretic analysis of Texas Gulf Coast red drum Sciaenops ocellata written by William Ray Wilder and published by . This book was released on 1986 with total page 248 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Aquatic Sciences and Fisheries Abstracts written by and published by . This book was released on 1990 with total page 1178 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Biological and Ecological Studies on Marine Ichthyoplankton written by Hui Zhang and published by Frontiers Media SA. This book was released on 2022-08-08 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Compass Port LLC Deepwater Port License Application written by and published by . This book was released on 2006 with total page 912 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Red Drum Sciaenops Ocellatus Tagging in North Carolina Waters written by Jeffrey L. Ross and published by . This book was released on 1987 with total page 45 pages. Available in PDF, EPUB and Kindle. Book excerpt: