Fishery Bulletin articles from July 2002

Fishery Bulletin archives from July 2002

Temporal and spatial dynamics of spawning, settlement, and growth of gray snapper (Lutjanus griseus) from the West Florida shelf as determined from otolith microstructures.
July 1, 2002... Abstract--The goal of our study was to understand the spatial and temporal variation in spawning and settlement of gray snapper (Lutjanus griseus) along the West Florida shelf (WFS). Juvenile gray snapper were collected over two consecutive...

Current velocity and catch efficiency in sampling settlement-stage larvae of coral-reef fishes.(Statistical Data Included)
July 1, 2002... Abstract--Light traps and channel nets are fixed-position devices that involve active and passive sampling, respectively, in the collection of settlement-stage larvae of coral-reef fishes. We compared the abundance, taxonomic composition, and...

Intermingling and seasonal migrations of Greenland halibut (Reinhardtius hippoglossoides) populations determined from tagging studies.(Statistical Data Included)
July 1, 2002... Abstract--A total of 7244 Greenland halibut (Reinhardtius hippoglossoides, Walbaum) were tagged in Greenland waters between 1986 and 1998 to increase information on stock delineations, to clarify migration routes, and to describe the seasonal...

Improving pinniped diet analyses through identification of multiple skeletal structures in fecal samples.(Statistical Data Included)
July 1, 2002... Abstract--Marine mammal diet is typically characterized by identifying fish otoliths and cephalopod beaks retrieved from stomachs and fecal material (scats). The use and applicability of these techniques has been the matter of some debate given...

Pinniped diet composition: a comparison of estimation models.(Statistical Data Included)
July 1, 2002... Abstract--Along the west coast of the United States, the potential impact of increasing pinniped populations on declining salmonid (Oncorhynchus spp.) stocks has become an issue of concern. Fisheries managers need species-specific estimates of...

Vertical and horizontal movements of southern bluefin tuna (Thunnus maccoyii) in the Great Australian Bight observed with ultrasonic telemetry.(Statistical Data Included)
July 1, 2002... Abstract--The vertical and horizontal movements of southern bluefin tuna (SBT), Thunnus maccoyii, in the Great Australian Bight were investigated by ultrasonic telemetry. Between 1992 and 1994, sixteen tuna were tracked for up to 49 h with...

Turtle excluder devices--are the escape openings large enough? *.(Statistical Data Included)
July 1, 2002... Abstract--All five species of sea turtles in continental U.S. waters are protected under the Endangered Species Act of 1973 and the population sizes of all species remain well below historic levels. Shrimp trawling was determined to be the...

Habitat use by demersal nekton on the continental shelf in the Benguela ecosystem, southern Africa.(Statistical Data Included)
July 1, 2002... Abstract--Videotapes collected by the research submersible Jago in the Benguela ecosystem during spring 1997 were analyzed to determine demersal nekton assemblage composition, fish behavior, and microscale habitat association, and habitat...

Population structure of king mackerel (Scomberomorus cavalla) around peninsular Florida, as revealed by microsatellite DNA *.(Statistical Data Included)
July 1, 2002... Abstract--A total of 1006 king mackerel (Scomberomorus cavalla) representing 20 discrete samples collected between 1996 and 1998 along the east (Atlantic) and west (Gulf) coasts of Florida and the Florida Keys were assayed for allelic variation...

Do fluctuations in the somatic growth rate of rock lobster (Jasus lalandii) encompass all size classes? A re-assessment of juvenile growth.(Statistical Data Included)
July 1, 2002... Abstract--Catch rates in the South African rock lobster (Jasus lalandii) fishery declined after 1989 in response to reduced adult somatic growth rates and a consequent reduction in recruitment to the fishable population. Although spatial and...

Stock-rebuilding time isopleths and constant-F stock-rebuilding plans for overfished stocks.(Statistical Data Included)
July 1, 2002... ABSTRACT--Stock-rebuilding time isopleths relate constant levels of fishing mortality (F), stock biomass, and management goals to rebuilding times for overfished stocks. We used simulation models with uncertainty about [F.sub.MSY] and...

Nuclear and mitochondrial DNA markers for specific identification of istiophorid and xiphiid billfishes *.(Statistical Data Included)
July 1, 2002... Abstract--Independent molecular markers based on mitochondrial and nuclear DNA were developed to provide positive identification of istiophorid and xiphiid billfishes (marlins, spearfishes, sailfish, and swordfish). Both classes of markers were...

Seasonal growth of King George whiting (Sillaginodes punctata) estimated from length-at-age samples of the legal-size harvest.
July 1, 2002... Abstract--Samples of 11,000 King George whiting (Sillaginodes punctata) from the South Australian commercial and recreational catch, supplemented by research samples, were aged from otoliths. Samples were analyzed from three coastal regions and...

Spatial and temporal patterns in the demersal fish community on the shelf and upper slope regions of the Gulf of Alaska.(Statistical Data Included)
July 1, 2002... Abstract--We analyzed data from National Marine Fisheries Service bottom trawl surveys carried out triennially from 1984 to 1996 in the Gulf of Alaska (GOA). The continental shelf and upper slope (0-500 m) of the GOA support a rich demersal...

Age, growth, mortality, and distribution of pinfish (Lagodon rhomboides) in Tampa Bay and adjacent Gulf of Mexico waters.(Statistical Data Included)
July 1, 2002... Abstract--Life-history dynamics of pinfish (Lagodon rhomboides) were examined from data derived from random-station surveys conducted in Tampa Bay and adjacent Gulf of Mexico waters during 1993-97. In addition, patterns in spatial distribution...

Recovery of the Gulf of Maine--Georges Bank Atlantic herring (Clupea harengus) complex: perspectives based on bottom trawl survey data.(Statistical Data Included)
July 1, 2002... Abstract--NMFS bottom trawl survey data were used to describe changes in distribution, abundance, and rates of population change occurring in the Gulf of Maine--Georges Bank herring (Clupea harengus) complex during 1963-98. Herring in the...

Recruitment of larval Atlantic menhaden (Brevoortia tyrannus) to North Carolina and New Jersey estuaries: evidence for larval transport northward along the east coast of the United States *.(Statistical Data Included)
July 1, 2002... Abstract--Age, size, abundance, and birthdate distributions were compared for larval Atlantic menhaden (Brevoortia tyrannus) collected weekly during their estuarine recruitment seasons in 1989-90, 1990-91, and 1992-93 in lower estuaries near...

Origin of immature loggerhead sea turtles (Caretta caretta) at Hutchinson Island, Florida: evidence from mtDNA markers.(Statistical Data Included)
July 1, 2002... Abstract-Loggerhead sea turtles (Caretta caretta) are migratory, long-lived, and slow maturing. They are difficult to study because they are seen rarely and their habitats range over vast stretches of the ocean. Movements of immature turtles...

Spawning of American shad (Alosa sapidissima) and striped bass (Morone saxatilis) in the Mattaponi and Pamunkey Rivers, Virginia *.(Statistical Data Included)
July 1, 2002... In the Atlantic coastal region, American shad (Alosa sapidissima) is highly prized for its flesh and roe. Spawning runs have been heavily fished and since the late 1800s, landings have shown steady declines to the extent that Maryland declared...

Spawning, growth, and overwintering size of searobins (Triglidae: Prionotus carolinus and P. evolans) *.(Statistical Data Included)
July 1, 2002... The northern searobin, Prionotus carolinus, and striped searobin, P. evolans, are among the most common benthic fishes of continental shelf waters between Cape Cod and Cape Hatteras, and both species have contributed occasionally to landings of...

Errata.
July 1, 2002... Erratum 1 Fishery Bulletin 100(2): 242. Kitada, Shuichi, and Kiyoshi Tezuka. Longitudinal logbook survey designs for estimating recreational fishery catch, with application to ayu (Plecoglosssus altivelis) Please note that in...