Recently added articles from Fishery Bulletin:
Effects of seasonal change on activity rhythms and swimming behavior of age-O bluefish (Pomatomus saltatrix) and a description of gliding behavior.(Report)
Jan 01, 2009; ... Abstract--Daily and seasonal activity rhythms, swimming speed, and modes of swimming were studied in a school of spring-spawned age0 bluefish (Pomatomus saltatrix) for nine months in a 121-kL research aquarium. Temperature was lowered from 20[degrees] to 15[degrees]C, then returned to ...
Evolutionary associations between sand seatrout (Cynoscion arenarius) and silver seatrout (C. nothus) inferred from morphological characters, mitochondrial DNA, and microsatellite markers.(Report)
Jan 01, 2009; ... Abstract--The evolutionary associations between closely related fish species, both contemporary and historical, are frequently assessed by using molecular markers, such as microsatellites. Here, the presence and variability of microsatellite loci in two closely related species of marine ...
Spatial and seasonal abundance of sand seatrout (Cynoscion arenarius) and silver seatrout (C. nothus) off the coast of Texas, determined with twenty years of data (1987-2006).(Report)
Jan 01, 2009; ... Abstract--Sand seatrout (Cynoscion arenarius) and silver seatrout (C. nothus) are both found within the immediate offshore areas of the Gulf of Mexico, especially around Texas; however information is limited on how much distributional overlap really occurs between these species. In order ...
Biological response to changes in climate patterns: population increases of gray snapper (Lutjanus griseus) in Texas bays and estuaries.(Report)
Jan 01, 2009; ... Abstract--The increase in the abundance of gray snapper (Lutjanus griseus) in Texas bays and estuaries over the past 30 years is correlated to increased wintertime surface water temperatures. Trends in the relative abundance of gray snapper are evaluated by using monthly ...
Dividing population genetic distance data with the software Partitioning Optimization with Restricted Growth Strings (PORGS): an application for Chinook salmon (Oncorhynchus tshawytscha), Vancouver Island, British Columbia.(Report)
Jan 01, 2009; ... Abstract--A new method of finding the optimal group membership and number of groupings to partition population genetic distance data is presented. The software program Partitioning Optimization with Restricted Growth Strings (PORGS), visits all possible set partitions and deems acceptable ...
The western blue groper (Achoerodus gouldii), a protogynous hermaphroditic labrid with exceptional longevity, late maturity, slow growth, and both late maturation and sex change.(Report)
Jan 01, 2009; ... Abstract--The western blue groper (Achoerodus gouldii) is shown to be a temperate protogynous hermaphrodite, which spawns between early winter and mid-spring. Because A. gouldii changes body color at about the time of sex change, its color can be used as a proxy for sex for estimating the ...
Recalculated diet and daily ration of the shortfin mako (Isurus oxyrinchus), with a focus on quantifying predation on bluefish (Pomotomus soltotrix) in the northwest Atlantic Ocean.(Report)
Jan 01, 2009; ... Abstract--The diet and daily ration of the shortfin mako (Isurus oxyrinchus) in the northwest Atlantic were re-examined to determine whether fluctuations in prey abundance and availability are reflected in these two biological variables. During the summers of 2001 and 2002, stomach content ...
A comparison between warm-water fish assemblages of Narragansett Bay and those of Long Island Sound waters.(Report)
Jan 01, 2009; ... Abstract--Fish species of warm-water origin appear in northeastern U.S. coastal waters in the late summer and remain until late fall when the temperate waters cool. The annual abundance and species composition of warm-water species is highly variable from year to year, and these variables ...
Reconstruction of original body size and estimation of allometric relationships for the longfin inshore squid (Loligo pealeii) and northern shortfin squid (Illex illecebrosus).(Report)
Jan 01, 2009; ... Quantification of predator-prey body size relationships is essential to understanding trophic dynamics in marine ecosystems. Prey lengths recovered from predator stomachs help determine the sizes of prey most influential in supporting predator growth and to ascertain size-specific effects ...
An assessment of discard mortality for two Alaskan crab species, Tanner crab (Chionoecetes bairdi)and snow crab (C. opilio), based on reflex impairment.(Report)
Oct 01, 2008; ... Abstract--Delayed mortality associated with discarded crabs and fishes has ordinarily been observed through tag and recovery studies or during prolonged holding in deck tanks, and there is need for a more efficient assessment method. Chionoecetes bairdi (Tanner crab) and C. opilio (snow ...
Fishes associated with pelagic Sargassum and open water lacking Sargassum in the Gulf Stream off North Carolina.(Report)
Oct 01, 2008; ... Abstract--The community structure of fishes associated with pelagic Sargassum spp. and open water lacking Sargassum was examined during summer and fall cruises, 1999-2003, in the Gulf Stream off North Carolina. Significantly more individual fishes (n= 18,799), representing at least 80 ...
Evidence of hook competition in longline surveys.(Report)
Oct 01, 2008; ... Abstract--Catch rates from surveys are used as indices of abundance for many fish species. Relative abundance estimates from surveys with longline gear do not usually account for possible effects of gear saturation, which potentially creates competition among fish for baited hooks and ...
Age validation of Dover sole (Microstomus pacificus) by means of bomb radiocarbon.(Report)
Oct 01, 2008; ... Abstract--We used bomb radiocarbon ([sup.14]C) in this age validation study of Dover sole (Microstomus pacificus). The otoliths of Dover sole, a commercially important fish in the North Pacific, are difficult to age and ages derived from the current break-and-burn method were not ...
A 4500-year time series of Pacific cod (Gadus macrocephalus) size and abundance: archaeology, oceanic regime shifts, and sustainable fisheries.(Report)
Oct 01, 2008; ... Abstract--A 4500-year archaeological record of Pacific cod (Gadus macrocephalus) bones from Sanak Island, Alaska, was used to assess the sustainability of the modern fishery and the effects of this fishery on the size of fish caught. Allometric reconstructions of Pacific cod length for ...
Prevalence of the commensal barnacle Xenobalanus globicipitis on cetacean species in the eastern tropical Pacific Ocean, and a review of global occurrence.(Report)
Oct 01, 2008; ... Abstract--Distribution and prevalence of the phoretic barnacle Xenobalanus on cetacean species are reported for 22 cetaceans in the eastern tropical Pacific Ocean (21 million [km.sup.2]). Four cetacean species are newly reported hosts for Xenobalanus: Bryde's whale (Balaenoptera edeni), ...
Onshore-offshore distribution and abundance of tuna larvae (Pisces: Scombridae: Thunnini) in near-reef waters of the Coral Sea.(Report)
Oct 01, 2008; ... Abstract--The on-offshore distributions of tuna larvae in near-reef waters of the Coral Sea, near Lizard Island (14[degrees]30'S, 145[degrees]27'E), Australia, were investigated during four cruises from November 1984 to February 1985 to test the hypothesis that larvae of these oceanic ...
Habitat and bycatch effects on population parameters of inshore lizardfish (Synodus foetens) in the north central Gulf of Mexico.(Report)
Oct 01, 2008; ... Abstract--We examined the effect of habitat and shrimp trawl bycatch on the density, size, growth, and mortality of inshore lizardfish (Synodus foetens), a nonexploited species that is among the most widespread and abundant benthic fishes in the north central Gulf of Mexico. Results of ...
Effects of rapid decompression and exposure to bright light on visual function in black rockfish (Sebastes melanops) and Pacific halibut (Hippoglossus stenolepis).(Report)
Oct 01, 2008; ... Abstract--Demersal fishes hauled up from depth experience rapid decompression. In physoclists, this can cause overexpansion of the swim bladder and resultant injuries to multiple organs (barotrauma), including severe exophthalmia ("pop-eye"). Before release, fishes can also be subjected to ...
Changes in a benthic megafaunal community due to disturbance from bottom fishing and the establishment of a fishery closure.(Report)
Oct 01, 2008; ... Abstract--Trawling and dredging on Georges Bank (northwest Atlantic Ocean) have altered the cover of colonial epifauna, as surveyed through in situ photography. A total of 454 photographs were analyzed from areas with gravel substrate between 1994 and 2000 at depths of 40-50 m and 80-90 m ....
Pelagic behavior of adult Greenland halibut (Reinhardtius hippoglossoides).(Report)
Oct 01, 2008; ... Abstract--It is evident from several field experiments with vertical longlines and archival tags, as well as concurrent studies of predator-prey relationships, that adult specimens of the deep-water flatfish Greenland halibut (Reinhardtius hippoglossoides) make regular excursions several ...