Fishery Bulletin articles from April 2004

Fishery Bulletin archives from April 2004

Annual estimates of the unobserved incidental kill of pantropical spotted dolphin (Stenella attenuata attenuata) calves in the tuna purse-seine fishery of the eastern tropical Pacific.
April 1, 2004... Abstract--We estimated the total number of pantropical spotted dolphin (Stenella attenuata) mothers killed without their calves ("calf deficit") in all tuna purse-seine sets from 1973-90 and 1996-2000 in the eastern tropical Pacific. Estimates...

A remarkable new species of Psednos (Teleostei: Liparidae) from the western North Atlantic Ocean.
April 1, 2004... Abstract--Psednos rossi new species (Teleostei: Liparidae) is described from two specimens collected in the North Atlantic Ocean off Cape Hatteras, North Carolina, at depths of 500-674 m. Psednos rossi belongs to the P. christinae group, which...

Age and growth of sailfish (Istiophorus platypterus) in waters off eastern Taiwan.
April 1, 2004... Abstract--Age and growth of sailfish (Istiophorus platypterus) in waters off eastern Taiwan were examined from counts of growth rings on cross sections of the fourth spine of the first dorsal fin. Length and weight data and the dorsal fin...

A habitat-use model to determine essential fish habitat for juvenile brown shrimp (Farfantepenaeus aztecus) in Galveston Bay, Texas.
April 1, 2004... Abstract--A density prediction model for juvenile brown shrimp (Farfantepenaeus aztecus) was developed by using three bottom types, five salinity zones, and four seasons to quantify patterns of habitat use in Galveston Bay, Texas. Sixteen years...

Translocation as a strategy to rehabilitate the queen conch (Strombus gigas) population in the Florida Keys.
April 1, 2004... Abstract--Queen conch (Strombus gigas) stocks in the Florida Keys once supported commercial and recreational fisheries, but overharvesting has decimated this once abundant snail. Despite a ban on harvesting this species since 1985, the local...

Genetic differentiation among Atlantic cod (Gadus morhua) from Browns Bank, Georges Bank, and Nantucket Shoals.
April 1, 2004... Abstract--This study examines genetic variation at five microsatellite loci and at the vesicle membrane protein locus, pantophysin, of Atlantic cod (Gadus morhua) from Browns Bank, Georges Bank, and Nantucket Shoals. The Nantucket Shoals sample...

Conserving oyster reef habitat by switching from dredging and tonging to diver-harvesting.
April 1, 2004... Abstract--A major cause of the steep declines of American oyster (Crassostrea virginica) fisheries is the loss of oyster habitat through the use of dredges that have mined the reef substrata during a century of intense harvest. Experiments...

Fecundity, egg deposition, and mortality of market squid (Loligo opalescens).
April 1, 2004... Abstract--Loligo opalescens live less than a year and die after a short spawning period before all oocytes are expended. Potential fecundity ([E.sub.P]), the standing stock of all oocytes just before the onset of spawning, increased with dorsal...

The dusky rockfishes (Teleostei: Scorpaeniformes) of the North Pacific Ocean: resurrection of Sebastes variabilis (Pallas, 1814) and a redescription of Sebastes ciliatus (Tilesius, 1813).
April 1, 2004... Abstract--The dusky rockfish (Sebastes ciliatus) of the North Pacific Ocean has been considered a single variable species with light and dark Forms distributed in deep and shallow water, respectively. These forms have been subjected to two...

Recruitment as an evolving random process of aggregation and mortality.
April 1, 2004... Abstract--The dynamics of the survival of recruiting fish are analyzed as evolving random processes of aggregation and mortality. The analyses draw on recent advances in the physics of complex networks and, in particular, the scale-free degree...

Diet shifts of juvenile red snapper (Lutjanus campechanus) with changes in habitat and fish size.
April 1, 2004... Abstract--We examined the diets and habitat shift of juvenile red snapper (Lutjanus campechanus) in the north east Gulf of Mexico. Fish were collected from open sand-mud habitat (little to no relief), and artificial reef habitat (1-[m.sup.3]...

Individual growth rates and movement of juvenile white shrimp (Litopenaeus setiferus) in a tidal marsh nursery *.
April 1, 2004... Abstract--We measured growth and movements of individually marked free-ranging juvenile white shrimp (Litopenaeus setiferus) in tidal creek subsystems of the Duplin River, Sapelo Island, Georgia. Over a period of two years, 15,974 juvenile...

Does the California market squid (Loligo opalescens) spawn naturally during the day or at night? A note on the successful use of ROVs to obtain basic fisheries biology data.
April 1, 2004... The California market squid (Loligo opalescens Berry), also known as the opalescent inshore squid (FAO), plays a central role in the nearshore ecological communities of the west coast of the United States (Morejohn et al., 1978; Hixon, 1983)...

Incidental capture of loggerhead (Caretta caretta) and leatherback (Dermochelys coriacea) sea turtles by the pelagic longline fishery off southern Brazil.
April 1, 2004... Incidental capture in fishing gear is one of the main sources of injury and mortality of juvenile and adult sea turtles (NRC, 1990; Lutcavage et al., 1997; Oravetz, 1999). Six out of the seven extant species of sea turtles--the leatherback...

Diet changes of Pacific cod (Gadus macrocephalus) in Pavlof Bay associated with climate changes in the Gulf of Alaska between 1980 and 1995.
April 1, 2004... The diet of Pacific cod (Gadus macrocephalus) in the area of Pavlof Bay, Alaska, was studied in the early 1980s by Albers and Anderson (1985). They found that the dominant prey species were forage species like pandalid shrimp, capelin (Mallotus...