Download or read book Analysis of Juvenile Striped Bass Morone Saxatilis Abundance and Growth in the Nanticoke River Maryland Using Otolith Back calculation Methods written by Edith Elizabeth Ann Evarts and published by . This book was released on 2001 with total page 274 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Synopsis of Biological Data on Striped Bass Morone Saxatilis Walbaum written by Eileen M. Setzler-Hamilton and published by . This book was released on 1980 with total page 80 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Recruitment Characteristics of Juvenile Striped Bass Morone Saxatilis Across Recovery Periods Year Classes and Subestuaries of the Chesapeake Bay written by Olivia M. Phillips and published by . This book was released on 2020 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The Atlantic coast striped bass fisheries collapsed in the late 1970's due to recruitment overfishing and poor habitat quality. Recovery of the fisheries in 1995 resulted from protection of mature females, favorable environmental conditions, and several years of strong recruitment. Today, the striped bass stock is overfished. The purpose of this study was to examine recruitment characteristics of juvenile striped bass during the pre- and post-recovery periods through (1) a comparison of mortality and hatch-date distribution between periods, and (2) to examine growth metrics of individuals from the post-recovery year classes. Lengths and otolith-derived daily ages from juvenile striped bass representing three year classes (2011, 2016, and 2017) from the James and Rappahannock subestuaries of the Chesapeake Bay were used to develop subestuary-specific age-length keys. Daily ages of juvenile striped bass from 32 year classes (1986 to 2017) spanning the pre- and post-recovery periods were projected from the age-length keys. Together with count data, the projected daily ages were used to estimate instantaneous daily mortality rates (Z, day-1) for each year class. Although daily Z estimates were relatively constant among the 32 year classes, mean hatch dates shifted earlier today (1996 to 2017) than prior to 1995. Within the post-recovery year classes, daily growth in length and weight was examined along with body condition (Fulton's K). All growth metrics varied by year class and subestuary, but daily growth rates and body condition were inversely related. The results of this study indicate that recruitment dynamics of juvenile striped bass in the Virginia portion of the Chesapeake Bay have changed over time, and within the post-recovery year classes, those changes varied among fish from the James and Rappahannock subestuaries.

Download or read book Striped Bass and Other Morone Culture written by R.M. Harrell and published by Elsevier. This book was released on 1997-05-23 with total page 387 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book is an up-to-date discussion of the culture of striped bass and other Morone spp. The subject matter is broken down into functional components of the spawning, husbandry, and economics of the industry, and is written by some of the leading scientists in each of the respective areas of discussion. The chapters on reproduction, nutrition, environmental requirements, transportation, economics and fish processing are not found anywhere else in the striped bass literature. The chapter on water quality takes a very non-traditional approach to considering the impact water quality has on the production success of Morone and offers some very thought-provoking ideas on water management.Primarily written as a reference work, this book is intended to complement existing technique manuals.

Download or read book Growth Survival and Energetics of Larval and Juvenile Striped Bass Morone Saxatilis and Its White Bass Hybrid M Saxatilis X M Chrysops written by Haluk Tuncer and published by . This book was released on 1988 with total page 272 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Extent of Suitable Habitats for Juvenile Striped Bass written by Rachel L. Dixon and published by . This book was released on 2022 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: The production of striped bass Morone saxatilis in Chesapeake Bay supports recreational and commercial fisheries along the Atlantic coast of the United States, but factors that contribute to high abundances of juvenile life stages are not fully understood. In this study, we characterized and quantified suitable and optimal habitat conditions in the Chesapeake Bay for two age groups of juvenile striped bass in discrete portions of the Bay: young-of-the-year (age-0) fish in shoreline and nearshore habitats, and resident sub-adults (age-1 to -4) in the mainstem and Bay-wide. We coupled information from 24 years of monthly fisheries surveys with hindcasts from a 3-D hydrodynamic model of the Bay and a numerical model of dissolved oxygen (DO) conditions. These models provided estimates of habitat conditions for 1996 to 2019 for 33 metrics of temperature, salinity, current speed, depth, DO, and physical features of habitats. Boosted regression trees were used to identify influential habitat covariates for each group, and those covariates were used to develop nonparametric habitat suitability models based on environmental conditions at the time and location of sampling. Habitat suitability indices (HSI), ranging from 0 (poor habitat) to 1 (high-quality habitat), were assigned to each grid in the 3-D model for each season in 1996 to 2019. We quantified suitable (HSI > 0.5) and optimal (HSI > 0.7) on a seasonal and annual basis, and across a range of environmental conditions (wet vs. dry years; warm vs. cool years). We also estimated the persistence of suitable habitats through time as the percent of years during which conditions were suitable at a given site; persistence allowed us to identify areas of the Bay and tidal tributaries that consistently supported suitable conditions for juvenile striped bass. Specific habitat conditions that defined suitable and optimal habitats for age-0 and age 1-4 striped bass varied across seasons and among years, reflecting changes in water quality conditions in Chesapeake Bay and changes in habitat use by striped bass during their first few years of life. Metrics of water quality, especially dissolved oxygen, were consistently identified as important covariates for juvenile striped bass; these conditions are of greater importance in determining habitat suitability than specific physical features especially for a highly mobile species and may be used to inform existing decision-support tools. In our study, we found no evidence that habitat use by striped bass in Chesapeake Bay was moderated by a strict threshold for any given covariate, and average to above-average abundances of striped bass were encountered in sub-suitable conditions; thus, habitat use resulted from a combination of abiotic, and likely biotic, conditions. Neither age group exhibited a statistically significant relationship between relative abundance and the extent of suitable habitats, however, for nearly all ages and seasons, relative abundance increased with greater extent of suitable habitats suggesting that detection of this relationship requires additional annual observations. A significant decrease in the extent of suitable habitat through time (1996 to present) was observed in spring and early summer, reflecting a change in suitable environmental conditions; with additional study years, declines in the relative abundance of age-0 and age 1-4 fish may be observed as suitability of habitats continues to decline. Given the high degree of interannual variability in abundance that is characteristic of estuarine-dependent species like striped bass, the availability and quantity of suitable and high-quality habitats at the scale of individual tributaries and Bay-wide may play an important role in production of this species.

Download or read book Striped Bass Morone Saxatilis Egg Production and Environmental Factors Influencing Larval Population Dynamics and Recruitment in the Nanticoke River 1992 1993 written by Loren Larkin Kellogg and published by . This book was released on 1995 with total page 540 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Genetic Analyses of Striped Bass in the Chesapeake Bay written by Savannah Michaelsen and published by . This book was released on 2018 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.

Download or read book Maternal Input of Striped Bass Morone Saxatilis written by Brie Elking and published by . This book was released on 2014 with total page 136 pages. Available in PDF, EPUB and Kindle. Book excerpt: Otolith studies have become more prevalent in recent years as use has expanded from ageing to examination of migration patterns and fidelity to natal habitats, and more recently examining otoliths for possible maternal contribution to progeny otoliths. The otoliths of larval Striped Bass, Morone saxatilis (Walbaum; 1792), were used to determine the presence of maternal contribution through three experiments. The first experiment was to examine the formation of larval otoliths to determine if otoliths formed prior to/ during the yolk sac stage when maternal influences are present, and thus if maternal contribution is possible. Two of the three otolith pairs (sagitta and lapillus) are formed during the embryo stage (sagitta) or post hatch (lapillus). The sagittal otoliths are the most often used otolith in microchemical studies; therefore its formation during the embryo stage suggests maternal contribution to progeny otoliths is possible. The second experiment used microchemical analysis of adult Striped Bass soft tissue (muscle, liver, kidney, and gonads) to determine whether adult Striped Bass develop trace elemental signatures similar to the adult otoliths. The gonadal tissues (ovaries and testes) were found to have similar signatures to adult otoliths utilizing a linear discriminate function analysis. As the two previous experiments support the hypothesis of maternal contribution the final step was to run a discriminate function analysis between the progeny and maternal otoliths. Embryo sagittal otoliths correctly identified the maternal clusters 91.67% of the time (n = 12), yolk sac larvae 66.67% of the time (n = 15), and non-yolk sac larvae only 60.94% of the time (n = 64). Progeny otoliths were also able to identify maternal river (Neuse, Roanoke or Tar); embryos classified the river 83.33% of the time (n = 12), yolk sac larvae classified 93.33% of the time (n = 15), and non-yolk sac larvae classified with 44.44% (n = 72) accuracy. Results of this study validate the hypothesis of maternal contribution and support the hypothesis of maternal life history determination from progeny.

Download or read book Temperature and Its Effects on the Growth and Production of Juvenile Striped Bass Morone Saxatilis written by George Stanley Redpath and published by . This book was released on 1972 with total page 74 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Temperature and Its Effect on the Growth and Production of Juvenile Striped Bass Morone Saxatilis written by George Stanley Redpath and published by . This book was released on 1972 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Using Water Chemistry and Otolith Chemistry to Determine Strategic Habitat Areas for Striped Bass Morone Saxatilis in the Albemarle Estuarine System of North Carolina written by Coley Hughes and published by . This book was released on 2015 with total page 159 pages. Available in PDF, EPUB and Kindle. Book excerpt: Abstract Striped bass (Morone saxatilis) is an important anadromous species that provides valuable ecological and economic benefits to North Carolina. Habitat degradation, alteration and destruction are ongoing, and agencies are lacking the information needed to determine what habitat areas need protection. The North Carolina Coastal Habitat Protection Plan (NC CHPP) recommends that Strategic Habitat Areas (SHAs) be identified in order to maintain water quality and protect the ecosystem that serves our fisheries. Trace elements found in the water chemistry can be compared to elements deposited in the otolith. Otoliths, or ear bones in fish are calcified structures that incorporate elements from ambient water that is encountered by the fish. Fish residing in the AES can have a multi-elemental signature in their otoliths that can be a reflection of the water chemistry of the rivers. The temporal and spatial stability of the water chemistry must be determined before otolith chemistry can be used to establish nursery habitat. The temporal and spatial stability of water chemistry in each watershed of the AES was examined over multiple sampling sites and seasons. Sr:Ca, Ba:Ca, Mn:Ca, and Mg:Ca ratios differed significantly spatially, but not temporally (with the exception of Mg:Ca) and multi-element signatures correctly identified habitats with between 79-89% accuracy. Once the spatial and temporal stability of the water chemistry was evaluated, otoliths of adult striped bass were analyzed to determine SHAs used in their first summer of life. Adult striped bass were collected from Albemarle Sound and Roanoke River during the pre-spawn through post-spawn period from March-May of 2009 and 2010. Concentrations of strontium (Sr), barium (Ba), manganese (Mn), and magnesium (Mg) at the 60-120 day post-hatch period in adult otoliths were measured to determine habitat specific signatures and to establish the relative contribution of fish from each nursery habitat. Random Forests (JMP Pro 11.2) analysis was applied to otolith chemistry to successfully assign adult fish to one of four watershed containing nursery habitat. Model testing was completed by analyzing the juvenile (60-120 days post-hatch) portions of the adult otoliths from the 1994 to 2006 year classes (Age 3 to Age 16; n = 206). Results indicate the highest portion (60.87% to 76.47%) of adult striped bass sampled in my study were predicted to have used the Perquimans River as their nursery habitat area and subsequently survived to spawn as adults. Only a small portion of the Perquimans River is currently designated. My study results indicate that the Perquimans River appears to be important striped bass nursery habitat and therefore needs additional protection. Management implications resulting from changes in current SHA designations are discussed, not only for striped bass sustainability via the NC CHPP but also for the furtherance of existing additional environmental management programs or initiatives (e.g., the Albemarle Pamlico National Estuary Partnership's Comprehensive Conservation and Management Plan [CCMP], and the South Atlantic Landscape Conservation Cooperative's Conservation Blueprint 2.0).

Download or read book The Influence of Growth Rate on the Otolith Size fish Size Relationship in Juvenile Striped Bass written by Clinton L. Dickey and published by . This book was released on 1997 with total page 22 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book A Computerized Growth Model for the Culture of Striped Bass Morone Saxatilis and Its Hybrids written by Bryan Cletus Tomer and published by . This book was released on 1999 with total page 330 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Countergradient variation in growth of young striped bass Morone saxatilis from different latitudes written by D.O. CONOVER and published by . This book was released on 1997 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Habitat Utilization of Juvenile Striped Bass Morone Saxatilis in Albemarle Sound Inferred from Otolith and Water Chemistries written by John Mohan and published by . This book was released on 2009 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Movements of North Carolina Striped Bass Morone Saxatilis Inferred Through Otolith Microchemistry written by Daniel J. Zurlo and published by . This book was released on 2014 with total page 147 pages. Available in PDF, EPUB and Kindle. Book excerpt: Striped Bass, Morone saxatilis, is an anadromous, recreationally and commercially important fish species found throughout the U.S. Atlantic east coast, whose migrations have been intensely studied. A review of the relevant literature on Striped Bass migrations revealed that the paradigm of Striped Bass migration along the U.S. Atlantic coast should be updated, as new information has shown that in addition to the Chesapeake Bay and Hudson River, the Roanoke River, NC, Delaware River, and possibly the Shubenacadie River, Nova Scotia, Canada, may also contribute fish to the mixed Atlantic Migratory Stock. The needs for an updated delineation of stocks that contribute to the Atlantic Migratory Stock and determination of inshore migrations and habitat use were identified as additional avenues for further research. In effort to answer the latter question, the inshore movements and potential mixing of North Carolina stocks of adult Striped Bass from separate management areas (Albemarle Sound Management Area, ASMA, and Central Southern Management Area, CSMA) were determined using otolith microchemistry. Trace element ratios (strontium:calcium, Sr:Ca; barium:calcium, Ba:Ca; magnesium:calcium, Mg:Ca; and manganese:calcium, Mg:Ca) measured through inductively coupled plasma optical emission spectrometry (ICP-OES) from ASMA and CSMA water samples were used to determine that each management area had different water chemistries through linear discriminant function analysis (LDFA), allowing for discrimination of otolith chemistries of fish from different management areas. Adult otolith elemental concentrations of Sr, Ba, Mg, and Mn, measured using laser ablation inductively couple plasma mass spectroscopy, of fish from separate management areas were compared using linear discriminant function analysis, which determined that little mixing of adult fish occurred between the two management areas, except in years of high abundance of ASMA fish, in which those fish would migrate to the CSMA. The same methods were used on CSMA fish determined to be of hatchery or wild origin by Dobbs (2013) to determine that CSMA hatchery and wild fish use different habitat during their sub-adult and early adult lives, but similar habitat as they aged. Finally, otolith microchemistry was used in an attempt to determine if the Roanoke River, NC (ASMA) contributed fish to the Atlantic Migratory Stock, as North Carolina Division of Marine Fisheries (NCDMF) tag returns indicated the Roanoke River was contributing significant numbers of fish. Otolith Sr:Ca ratios were used to determine anadromous migrations, as otolith Sr:Ca is directly correlated to ambient salinity. Results did not agree well with NCDMF tagging, as many larger fish exhibited resident Sr:Ca profiles, whereas NCDMF tag returns indicated that most, larger (>800 mm total length, total length) fish were anadromous and undertook long distance migrations. It is possible that the Roanoke River harbors discrete resident and anadromous contingents of large, adult Striped Bass.