Fishery Bulletin articles from January 2003

Fishery Bulletin archives from January 2003

The use of parasites in discriminating stocks of Pacific halibut (Hippoglossus stenolepis) in the northeast Pacific.
January 1, 2003... Abstract--The use of parasites as indicators of the stock structure of Pacific halibut (Hippoglossus stenolepis) in the northeast Pacific was investigated by using 328 adult (>55 cm fork length) halibut from 15 composite localities ranging from...

Small-scale spatial and temporal variability in growth and mortality of fish larvae in the subtropical northcentral Gulf of Mexico: implications for assessing recruitment success.
January 1, 2003... Abstract--Extensive plankton collections were taken during seven September cruises (1990-93) along the inner continental shelf of the northcentral Gulf of Mexico (GOM). Despite the high productivity and availability of food during these...

Temporal changes in population density, fecundity, and egg size of the Hawaiian spiny lobster (Panulirus marginatus) at Necker Bank, Northwestern Hawaiian Islands.
January 1, 2003... Abstract--Fecundity (F, number of brooded eggs) and egg size were estimated for Hawaiian spiny lobster (Panulirus marginatus) at Necker Bank, Northwestern Hawaiian Islands (NWHI), in June 1999, and compared with previous (1978-81, 1991)...

Impact of hatchery releases on the recreational fishery for Pacific threadfin (Polydactylus sexfilis) in Hawaii.
January 1, 2003... Abstract--The Pacific threadfin (Polydactylus sexfilis) is considered one of the premier Hawaiian food fishes but even with catch limits, seasonal closures, and size limits, catches have declined dramatically since the 1960s. It was identified...

Yield- and biomass-per-recruit analysis for rotational fisheries, with an application to the Atlantic sea scallop (Placopecten magellanicus).
January 1, 2003... Abstract--A general model for yield-per-recruit analysis of rotational (periodic) fisheries is developed and applied to the sea scallop (Placopecten magellanicus) fishery of the northwest Atlantic. Rotational fishing slightly increases both...

Estimating long-term growth-rate changes of southern bluefin tuna (Thunnus maccoyii) from two periods of tag-return data.
January 1, 2003... Southern bluefin tuna (SBT) (Thunnus maccoyii) growth rates are estimated from tag-return data associated with two time periods, the 1960s and 1980s. The traditional von Bertalanffy growth model (VBG) and a two-phase VBG model were fitted to...

Life history of the Atlantic sharpnose shark (Rhizoprionodon terraenovae) (Richardson, 1836) off the southeastern United States.
January 1, 2003... Abstract--The life history of the Atlantic sharpnose shark (Rhizoprionodon terraenovae) was described from 1093 specimens collected from Virginia to northern Florida between April 1997 and March 1999. Longitudinally sectioned vertebral centra...

A general framework for integrating environmental time series into stock assessment models: model description, simulation testing, and example.
January 1, 2003... Abstract--We present a method to integrate environmental time series into stock assessment models and to test the significance of correlations between population processes and the environmental time series. Parameters that relate the...

Seasonal distribution, abundance, and growth of young-of-the-year Atlantic croaker (Micropogonias undulatus) in Delaware Bay and adjacent marshes *.
January 1, 2003... Abstract--We examined the spatial and temporal distribution, abundance, and growth of young-of-the-year (YOY) Atlantic croaker (Micropogonias undulatus) in Delaware Bay, one of the northernmost estuaries in which they consistently occur along...

Age validation, growth, mortality, and additional population parameters of the goldband snapper (Pristipomoides multidens) off the Kimberley coast of northwestern Australia.
January 1, 2003... Abstract--Goldband snapper (Pristipomoides multidens) collected from commercial trap and line fishermen off the Kimberley coast of northwestern Australia were aged by examination of sectioned otoliths (sagittae). A total of 3833 P. multidens,...

An approach to estimating rockfish biomass based on larval production, with application to Sebastes jordani *.
January 1, 2003... Abstract--An assessment of the total biomass of shortbelly rockfish (Sebastes jordani) off the central California coast is presented that is based on a spatially extensive but temporally restricted ichthyoplankton survey conducted during the...

Prey consumption of Steller sea lions (Eumetopias jubatus) off Alaska: how much prey do they require?
January 1, 2003... Abstract--The effects of seasonal and regional differences in diet composition on the food requirements of Steller sea lions (Eumetopias jubatus) were estimated by using a bioenergetic model. The model considered differences in the energy...

A Monte Carlo demographic analysis of the silky shark (Carcharhinus falciformis): implications of gear selectivity.
January 1, 2003... Demographic analysis has recently been used as a tool to approximate the dynamics of shark populations (Cailliet, 1992; Sminkey and Musick, 1996; Au and Smith, 1997; Cortes, 1999). The widespread use of demographic models for shark species,...

Indirect estimates of natural mortality rate for arrowtooth flounder (Atheresthes stomias) and darkblotched rockfish (Sebastes crameri).
January 1, 2003... Indirect estimates of instantaneous natural mortality rate (M) are widely used in stock assessment and fisheries management. They are essentially a form of meta-analysis, in which prior information on M and key life history parameters from a...

Use of parasites in stock identification of the deepwater redfish (Sebastes mentella) in the Northwest Atlantic.
January 1, 2003... An important aspect of fisheries management is the correct delineation of boundaries between fish stocks. With the recent collapse of the groundfish fishery in eastern Canada, redfish (Sebastes spp.) has become an increasingly important...

Dive-depth distribution of loggerhead (Carretta carretta) and olive ridley (Lepidochelys olivacea) sea turtles in the central North Pacific: might deep longline sets catch fewer turtles?
January 1, 2003... The Hawaii-based longline fishery operates over a large area in the central North Pacific, from the equator to latitude 45[degrees]N, between longitudes 130[degrees]W and 180[degrees]W. In 2000, 125 vessels were active in the fishery, producing...

Age-validation of a leopard shark (Triakis semifasciata) recaptured after 20 years.
January 1, 2003... On 10 July 1999, vertebrae bearing an oxytetracycline (OTC) time mark were retrieved from a tagged leopard shark (Triakis semifasciata) recaptured in San Francisco Bay, CA, after being at liberty for almost 20 years. An additional long-term...