Fishery Bulletin articles from April 2002

Fishery Bulletin archives from April 2002

Erratum.(Correction Notice)
April 1, 2002... Last sentence of the Abstract should read as follows: Incidents of bottlenose dolphin rope entanglements accounted for 16 of these cases.

Horizontal and vertical movements of juvenile bluefin tuna (Thunnus thynnus), in relation to oceanographic conditions of the western North Atlantic, determined with ultrasonic telemetry.
April 1, 2002... Abstract--We employed ultrasonic transmitters to follow (for up to 48 h) the horizontal and vertical movements of five juvenile (6.8-18.7 kg estimated body mass) bluefin tuna (Thunnus thynnus) in the western North Atlantic (off the eastern...

Differences in diet of Atlantic bluefin tuna (Thunnus thynnus) at five seasonal feeding grounds on the New England continental shelf *.
April 1, 2002... Abstract--The stomachs of 819 Atlantic bluefin tuna (Thunnus thynnus) sampled from 1988 to 1992 were analyzed to compare dietary differences among five feeding grounds on the New England continental shelf (Jeffreys Ledge, Stellwagen Bank, Cape...

Movement of American lobster (Homarus americanus) in the southwestern Gulf of St. Lawrence.
April 1, 2002... Abstract--A total of 42,445 American lobsters (Homarus americanus) were tagged in thirty-one sites throughout the southwestern Gulf of St. Lawrence between 1980 and 1997. Results from the recapture of 8503 tagged lobsters showed small distances...

Shortspine thornyhead (Sebastolobus alascanus) abundance and habitat associations in the Gulf of Alaska.
April 1, 2002... Abstract--Shortspine thornyhead (Sebastolobus alascanus) abundance was estimated from 107 video transects at 27 stations recorded from a research submersible in 1991 off southeast Alaska at depths ranging from 165 to 355 m. Numbers of...

Geographic and temporal patterns in size and maturity of the longfin inshore squid (Loligo pealeii) off the northeastern United States.
April 1, 2002... Abstract--Analysis of 32 years of standardized survey catches (1967-98) indicated differential distribution patterns for the longlin inshore squid (Loligo pealeii) over the northwest Atlantic U.S. continental shelf, by geographic region, depth,...

Age and size composition, growth rate, reproductive biology, and habitats of the West Australian dhufish (Glaucoma hebraicum) and their relevance to the management of this species.
April 1, 2002... Abstract--Samples of the commercially and recreationally important West Australian dhufish (Glaucosoma hebraicum) were obtained from the lower west coast of Australia by a variety of methods. Fish <300 mm TL were caught over fiat, hard...

Longitudinal logbook survey designs for estimating recreational fishery catch, with application to ayu (Plecoglossus altivelis).
April 1, 2002... Abstract--Longitudinal surveys of anglers or boat owners are widely used in recreational fishery management to estimate total catch over a fishing season. Survey designs with repeated measures of the same random sample over time are effective...

Physiological ecology of juvenile chinook salmon (Oncorhynchus tshawytscha) at the southern end of their distribution, the San Francisco Estuary and Gulf of the Farallones, California *.
April 1, 2002... Abstract--Juvenile chinook salmon, Oncorhynchus tshawytscha, from natal streams in California's Central Valley demonstrated little estuarine dependency but grew rapidly once in coastal waters. We collected juvenile chinook salmon at locations...

Bottlenose dolphin (Tursiops truncatus) strandings in South Carolina, 1992-1996.
April 1, 2002... Abstract--From 1992 to 1996, 153 bottlenose dolphin stranded in South Carolina, accounting for 73% of all marine mammal strandings during this period. The objectives of our study were to evaluate data from these strandings to determine 1)...

Validated age and growth of the porbeagle shark (Lamna nasus) in the western North Atlantic Ocean.
April 1, 2002... Abstract--Growth parameters were estimated for porbeagle shark (Lamna nasus) in the northwest Atlantic Ocean on the basis of vertebral annuli. A total of 578 vertebrae was analyzed. Annuli were validated up to an age of 11 years by using...

Food habits and consumption rates of common dolphinfish (Coryphaena hippurus) in the eastern Pacific Ocean.
April 1, 2002... Abstract--An ecosystem approach to fisheries management requires an understanding of the impact of predatory fishes on the underlying prey resources. Defining trophic connections and measuring rates of food consumption by apex predators lays...

Recruitment season, size, and age of young American eels (Anguilla rostrata) entering an estuary near Beaufort, North Carolina.
April 1, 2002... Abstract--Net catches from 1985-86 to 1994-95 at Pivers Island, North Carolina, indicated that glass-eel stage American eels (Anguilla rostrata) were recruited to the estuary from November to early May, with peak numbers in January, February,...

Changes over time in the spatial distribution of walleye pollock (Theragra chalcogramma) in the Gulf of Alaska, 1984-1996.
April 1, 2002... Abstract--Triennial bottom trawl survey data from 1984 to 1996 were used to evaluate changes in the summer distribution of walleye pollock in the western and central Gulf of Alaska. Differences between several age groups of pollock were...

Movements of bocaccio (Sebastes paucispinis) and greenspotted (S. chlorostictus) rockfishes in a Monterey submarine canyon: implications for the design of marine reserves.
April 1, 2002... Abstract--In August and September of 1997 and 1998, we used SCUBA techniques to surgically implant Vemco V16 series acoustic transmitters in 6 greenspotted rockfish (Sebastes chlorostictus) and 16 bocaccio (S. paucispinis) on the flank of...

Efficiency of bycatch reduction devices in small otter trawls used in the Florida shrimp fishery.
April 1, 2002... Abstract--Two bycatch reduction devices (BRDs)-the extended mesh funnel (EMF) and the Florida fisheye (FFE)--were evaluated in otter trawls with net mouth circumferences of 14 m, 17 m, and 20 m and total net areas of 45 [m.sup.2]. Each test net...

Severe decline in abundance of the red porgy (Pagrus pagrus) population off the southeastern United States.
April 1, 2002... Abstract--Status of the southeastern U.S. stock of red porgy (Pagrus pagrus) was estimated from fishery-dependent and fishery-independent data, 1972-97. Annual population numbers and fishing mortality rates at age were estimated from virtual...

A nearsurface, daytime occurrence of two mesopelagic fish species (Stenobrachius leucopsarus and Leuroglossus schmidti) in a glacial fjord. (Notes).
April 1, 2002... The northern lampfish (Stenobrachius leucopsarus, family Myctophidae) and northern smoothtongue (Leuroglossus schmidti, family Bathylagidae) are mesopelagic fishes, defined by their vertical distribution in the mesopelagic zone (200-1000 m)...

Opportunistic feeding of longhorn sculpin (Myoxocephalus octodecemspinosus): are scallop fishery discards an important food subsidy for scavengers on Georges Bank? (Notes).
April 1, 2002... There has been much recent interest in the effects of fishing on habitat and non-target species, as well as in protecting certain areas of the seabed from these effects (e.g. Jennings and Kaiser, 1998: Benaka, 1999: Langton and Auster, 1999:...

First record of a yellowfin tuna (Thunnus albacares) from the stomach of a longnose lancetfish (Alepisaurus ferox). (Notes).
April 1, 2002... In 1987 we found a juvenile yellowfin tuna, Thunnus albacares (Bonnaterre, 1788), in the stomach of a longnose lancetfish, Alepisaurus ferox Lowe, 1833. Analysis of published information on lancetfish food habits (Haedrich, 1964, 1969; Haedrich...