Fishery Bulletin articles from January 2001

Fishery Bulletin archives from January 2001

The use of internal otolith morphometrics for identification of haddock (Melanogrammus aeglefinus) stocks on Georges Bank.(Statistical Data Included)
January 1, 2001... Abstract--Internal otolith morphometrics, coupled with image analysis procedures and multivariate statistical analyses, were examined to investigate stock structure of haddock (Melanogrammus aeglefinus) on Georges Bank in the northwest...

Reproductive biology of cobia, Rachycentron canadum, from coastal waters of the southern United States.
January 1, 2001... Abstract--Reproductive biology of the cobia, Rachycentron canadum, is described from four coastal areas in the southern United States. Samples were obtained from recreational fishermen between December 1995 and November 1997 from the...

Abundance and depth distribution of harbor porpoise (Phocoena phocoena) in northern California determined from a 1995 ship survey.(Statistical Data Included)
January 1, 2001... Abstract--We estimate abundance and describe the depth distribution of harbor porpoise (Phocoena phocoena) in northern California from a November 1995 ship survey. This was the first ship survey designed to systematically survey different depth...

Association of yellowfin tuna (Thunnus albacares) with tracking vessels during ultrasonic telemetry experiments.
January 1, 2001... Abstract--Three yellowfin tuna (Thunnus albacares) carrying ultrasonic depth-sensitive transmitters developed a strong association with the tracking vessel, following it at speeds up to 5 knots (2.6 m/s). Two fish associated with the tracking...

Identification of rockfish (Sebastes spp.) by restriction site analysis of the mitochondrial ND-3/ND-4 and 12S/16S rRNA gene regions.(Statistical Data Included)
January 1, 2001... Abstract--Species-specific restriction site variation in the 12S/16S rRNA and ND-3/ND-4 mtDNA regions was used to distinguish among 15 rockfish species of the genus Sebastes common to the waters of Alaska. Intraspecific variation exhibited by...

A comparison of the precision and accuracy of estimates of reef-fish lengths determined visually by divers with estimates produced by a stereo-video system.(Statistical Data Included)
January 1, 2001... Abstract--Visual estimates of reef-fish length are a nondestructive and useful way of determining the biomass, mean length, or length frequency of reef fish. Consequently, visual estimates of reef-fish length are often an important component of...

Improving the statistical power of length estimates of reef fish: a comparison of estimates determined visually by divers with estimates produced by a stereo-video system.(Statistical Data Included)
January 1, 2001... Abstract--We calculated the power of visual length estimates by novice and experienced scientific SCUBA divers and estimates generated by a stereo-video system to detect changes in the mean length of three common species of reef fish from New...

Dynamics of larval fish abundance in Penobscot Bay, Maine.(Statistical Data Included)
January 1, 2001... Abstract--Biweekly ichthyoplankton surveys were conducted in Penobscot Bay, Maine, during the spring and early summer of 1997 and 1998. Larvae from demersal eggs dominated the catch from late winter through spring, but not in early summer...

Population structure of Fraser River chinook salmon (Oncorhynchus tshawytscha): an analysis using microsatellite DNA markers.(Statistical Data Included)
January 1, 2001... Abstract--Microsatellite DNA analysis was applied in a genetic study of 20 chinook salmon populations from four regions within the Fraser River drainage of British Columbia, Canada. Twelve populations were represented by samples collected in...

Annual and batch fecundities of yellowfin sole, Limanda aspera, in the eastern Bering Sea.(Statistical Data Included)
January 1, 2001... Abstract--Annual and batch fecundities of yellowfin sole, Limanda aspera, in the eastern Bering Sea were determined. Most individuals had a determinate, group-synchronous mode of oocyte development as evidenced by a distinctly separate...

Analysis of contemporary genetic structure of even-broodyear populations of Asian and western Alaskan pink salmon, Oncorhynchus gorbuscha.(Statistical Data Included)
January 1, 2001... Abstract--Even-year pink salmon (Oncorhynchus gorbuscha) populations from the Russian Far East and Japan exhibit genetic structure that reflects their geographic relationships. Extension of genetic analysis to include data from Bering Sea and...

Validation of age estimation and back-calculation of fish length based on otolith microstructures in tilapias (Pisces, Cichlidae).(Statistical Data Included)
January 1, 2001... Abstract--Two tilapia species, Sarotherodon melanotheron (brackishwater fish) and Oreochromis niloticus (freshwater fish), were marked with tetracycline and reared in Cote d'Ivoire (West Africa) in intensive (fish fed) and extensive (fish...

Bayesian methods for analysis of stock mixtures from genetic characters.(Statistical Data Included)
January 1, 2001... Abstract--An implementation of Bayesian methods to assess general stock mixtures is described. An informative prior for genetic characters of the separate stocks in a mixture is derived from baseline samples. A neutral, low-information prior is...

The potential role of marine reserves in the management of shortraker rockfish (Sebastes borealis) and rougheye rockfish (S. aleutianus) in the Gulf of Alaska.
January 1, 2001... Abstract--Shortraker and rougheye rockfish (Sebastes borealis and S. aleutianus) have been an independent management subgroup of the Gulf of Alaska slope rockfish assemblage since 1991. Special concerns are proposed for the management of these...

The diet of the large coral reef serranid Plectropomus leopordus in two fishing zones on the Great Barrier Reef, Australia.(Statistical Data Included)
January 1, 2001... Abstract--The diet of Plectropomus leopardus (Serranidae, Lacepede 1802) was examined on two pairs of reefs in the Cairns Section of the Great Barrier Reef Marine Park, Australia. For both pairs, one reef was open to fishing and the other had...

Estimating tag-shedding rates for skipjack tuna, Katsuwonus pelamis, off the Maldives.(Statistical Data Included)
January 1, 2001... One source of uncertainty in fishery assessments based on tag release and recapture data arises from tag shedding--the loss of tags from fish from the time of tagging until tag recovery. Independent estimation of tag-shedding rates from double...

The effect of sea state on estimates of abundance for beluga whales (Delphinapterus leucas) in Norton Sound, Alaska.(Statistical Data Included)
January 1, 2001... Beluga whales (Delphinapterus leucas) are relatively small odontocete cetaceans; standard lengths of newborn calves are about 160 cm and adults range from 300 to 450 cm (Doidge, 1990). At birth, calves are dark slate gray, and the color...

Age and growth of the scaled herring, Harengula jaguana, from Florida waters, as indicated by microstructure of the sagittae.(Statistical Data Included)
January 1, 2001... Scaled herrings, Harengula jaguana (Clupeidae), inhabit nearshore (40-m isobath, rarely 500-m) warm temperate and tropical waters of the western Atlantic Ocean from coastal New Jersey to off southern Brazil, including the waters of Bermuda, the...

A comparison of catches of swordfish, Xiphias gladius, and other pelagic species from Canadian longline gear configured with alternating monofilament and multifilament nylon gangions.(Statistical Data Included)
January 1, 2001... The Canadian large pelagic longline fishery extends from Georges Bank south of Nova Scotia to the Flemish Cap, east of Newfoundland, and operates from May through November, when swordfish (Xiphias gladius), the main species targeted, migrate...