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Collections of age estimation structures from marine taxa in the southern Gulf of St. Lawrence
PURPOSE: Support age-structured population stock assessments and research on fish growth. DESCRIPTION: Fish otoliths are collected from scientific surveys, fisheries observers on fishing vessels and from scientific sampling of commercial fisheries. The otoliths collected are placed in paper envelopes, recorded and held in a climate-controlled storage facility. Age determination is performed yearly on available samples. Digital images of each pair of otoliths collected are captured when possible. The information made available through this metadata record is the summary of otoliths present in the collection at the Gulf Fisheries Centre in Moncton, NB, Canada. The number of otoliths available from different sources by year and month is provided for the following stocks: - Atlantic Cod NAFO Divisions 4T / 4VN (Nov. to Apr.) - White Hake NAFO Division 4T - American Plaice NAFO Division 4T - Winter Flounder NAFO Division 4T - Yellowtail Flounder NAFO Division 4T - Witch Flounder NAFO Divisions 4RST - Skate species NAFO Division 4T There is additional information of observed sex, length, weight and age information of fish specimens made by trained Fisheries and Oceans Canada technicians that can be made available upon request. PARAMETERS COLLECTED: length (biological), age (biological) NOTES ON QUALITY CONTROL: Reference collections for certain species exist and are used to train technicians and to calibrate the age readings obtained by the fisheries technicians that use the otoliths for age estimation. Digital images of the otoliths that are part of the reference collection are available and used for calibration and training purposes. The otolith images are also authoritatively annotated by fisheries technicians. PHYSICAL SAMPLE DETAILS: Fish otoliths, skate vertebrae SAMPLING METHODS: Marine fish otoliths are obtained from fish specimens collected during research surveys and during scientific sampling of commercial fisheries. The sagittal otoliths are removed from sampled specimens, recorded, placed in a protective medium and held in a climate-controlled storage facility. Digital images of each pair of otoliths collected are captured when possible. USE LIMITATION: To ensure scientific integrity and appropriate use of the data, we would encourage you to contact the data custodian.
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Age and Growth of Spotted Sea Trout in the Gulf of Mexico from 1994 to 1996 (NCEI Accession 0156765)
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These data sets contain raw and processed data to compare life history demographic information necessary to manage spotted seatrout in NW Florida. Specific objectives were to develop estuary-specific information on age growth, mortality rates, spawning seasonality, age size at maturity, and age size composition of the recreational fishery for Apalachicola, St. Joseph, St. Andrew, Choctawhatchee, Pensacola, and Perdido Bay systems.
Summer Bottom Trawl Survey
공공데이터포털
Sampling the coastal waters of the Gulf of Maine using the Northeast Fishery Science Center standardized bottom trawl has been problematic due to large areas of hard bottom and the proliferation of fixed fishing gear. Concerns that areas with significant fish biomass were not being sampled resulted in the NEFSC developing a summer bottom trawl survey in order to supplement sampling in this region. The NEFSC worked with regional fisherman to map areas accessible to bottom trawls and used this information to develop a sampling regime. A master list of towable areas was used to inform the stratified-random survey design which allowed sampling in these areas, while greatly reducing gear damage. This survey was conducted from 1991 through 1995.
Gulf of Mexico Kemps ridley sea turtle age and growth NCEI Accession 0160329
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This study involves analysis of skeletal growth marks in humerus bones of 333 Kemps ridley sea turtles stranded dead along the Gulf of Mexico US coast (hatchling to adult) and provides age, growth rate, and stage duration estimates
Predicted distribution of federally managed fish in the Gulf of Mexico and South Atlantic from 2003-01-01 to 2017-12-31 (NCEI Accession 0226141)
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Raster data are derived from species distribution models, which are based on statistical species-habitat relationships (Guisan and Zimmermann 2000; Robinson et al. 2011). For Gulf of Mexico species, these data represent either probability of occurrence (pink shrimp Farfantepenaeus duorarum, red snapper Lutjanus campechanus age-1, lane snapper Lutjanus synagris age-0, lane snapper age-1, spinner shark Carcharhinus brevipinna, blacktip shark Carcharhinus limbatus) or relative abundance (brown shrimp Farfantepenaeus aztecus, white shrimp Litopenaeus setiferus, red snapper age-0, Atlantic sharpnose shark Rhizoprionodon terraenovae) given a standardized survey. For South Atlantic species, these data represent probability of occurrence for red snapper (adults), black sea bass Centropristis striata (juvenile and adults), blacknose shark Carcharhinus acronotus, sandbar shark Carcharhinus plumbeus, and tiger shark Galeocerdo cuvier given a standardized survey. Shark predictions of relative abundance are in units of individuals per 100 hooks per hour of bottom longline survey. Shrimp and red snapper age-0 relative abundance predictions are in units of individuals per kilometer of trawl survey. Shark distributions are representative of spring, summer, and fall seasons combined. Other species are depicted in either summer, fall, or summer and fall seasons combined. Further details are available in Pickens and Taylor (2020).
Age and size structure of key scalefish species
공공데이터포털
A single database has been implemented to store catch sampling and targeted research data collected since the late 1990s. In addition, data for key species e.g. striped and bastard trumpeter, has been uploaded from historic data bases to provide a complete dataset for the key species. Commercial catch sampling plus opportunistic collections of key scalefish species provide size and age structure information for catches. Where feasible additional biological information e.g. sex and reproductive status is collected.
Spawning Stock Biomass Estimates of Atlantic Cod in the Southern Gulf of St. Lawrence NAFO 4T-4Vn (Nov.-Apr.)
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PURPOSE: These data have been updated following a Canadian Science Advice Secretariat (CSAS) Regional Science Advisory Process. Associated publications are available in the citation section below or will be posted on the Fisheries and Oceans Canada (DFO) Science Advisory Schedule as they become available. Determine the stock status of southern Gulf of St. Lawrence Atlantic Cod. DESCRIPTION: The yearly spawning stock biomass estimates of southern Gulf of St. Lawrence Atlantic Cod were obtained using a Statistical Catch-at-Age model as part of the stock assessment to year 2023. The yearly estimates presented come from Markov Chain Monte Carlo (MCMC) simulations. The yearly median estimates are provided, along with uncertainty estimates (2.5th, 25th, 75th and 97.5th percentiles). The values are in thousands of tons of spawning stock biomass. USE LIMITATION: To ensure scientific integrity and appropriate use of the data, we would encourage you to contact the data custodian.
Southeast Region Finfish Age Database
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Data set includes port samples of reef fish species collected from commercial and recreational fishery landings in the U.S. South Atlantic (NC - FL Keys). The data set serves as an inventory of samples stored at the NMFS Beaufort Laboratory as well as final processed data. Information that may be inlcuded for each sample is trip level information, species, size meansurements, age, sex and reproductive data.
Washington coast sablefish - Reproductive Life History Analysis of Sablefish Populations off the Washington and California Coasts
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Sablefish (Anoplopoma fimbria) have a wide distribution along the Pacific coast, extending from Baja California to Alaska, the Bering Sea and through to the eastern coast of Japan. A unique feature of these fish is the wide variation in temperature and depth that sablefish experience throughout their life cycle, extending from depths 200m as adults to the surface as larvae and juveniles. While the landed weight of sablefish in the commercial fishery is relatively small, the exceptionally high value of this species ranks it 3rd in economic value to walleye pollock and Pacific cod. As such, sablefish are highly managed throughout the Pacific, and understanding the biology of this species is essential for proper management. The aim of this project is to characterize the reproductive life history of two populations of sablefish in coastal Washington and California. Fish will be collected from the same geographical location on a monthly basis for one year. The reproductive status will be determined from gonadal histology and plasma sex steroid levels, and age will be determined from otoliths. It is expected that data on size, age, rate of gonadal development, seasonal timing of spawning, fecundity, frequency of reproduction, and potential shifts in distribution of sexes will be obtained. This study applies directly to the Magnuson-Stevens Fishery Conservation and Management Reauthorization Act, because the data will be used to improve stock assessments and estimates of spawning biomass in this commercially important species. This project is a cooperation with the commercial fishing industry and scientists at the Northwest Fisheries Science Center (NWFSC) and Southwest Fisheries Science Center (SWFSC). Size, sex, gonad stage, fecundity.
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