Pacific herring, Clupea pallasi, were exposed both acutely (96 h) and chronically (9 wk) to the water-soluble fraction (WSF) of North Slope crude oil. Initial mean total PAH concentrations were approximately 10, 40 and 100 μg/L. Biological availability was suggested by a significant induction of hepatic cytochrome P450 content, ethoxyresorufin O-deethylase and glutathione S-transferase activiti...

Both the prevalence and tissue titer of viral hemorrhagic septicemia virus (VHSV) increased in Pacific herring Clupea pallasi following their introduction into net pens (pounds) used in the closed pound spawn-on-kelp (SOK) fishery in Prince William Sound, Alaska. VHSV was also found in water samples from inside and outside the SOK pounds after herring had been confined for several days; however...

This paper uses GIS and spatiotemporal analysis of a historically and culturally modified marine ecosystem to evaluate Pacific herring abundance, declines, vulnerabilities, and future prospects, about which a Native Tribe and state fisheries managers disagree. In 2008, the Sitka Tribe of Alaska (STA) requested that an area within its traditional waters be closed to commercial sac roe fishing to...

Since the invasion of round gobies (Neogobius melanostomus) to Lake Michigan, they have become integrated into both nearshore and offshore food webs. Round can be found in relatively shallow water (<20 m) during summer, but nearly disappear from these depths early fall. They been collected, occasionally, greater than 70 m warm seasons. These observations other anecdotal evidence suggest that mi...

The Eurasian round goby Neogobius melanostomus (Apollonia melanostoma) invaded the North American Great Lakes in 1990 through ballast water, spread rapidly, and now is widely distributed and moving through adjacent tributaries. We analyse its genetic diversity and divergence patterns among 25 North American (N = 744) and 22 Eurasian (N = 414) locations using mitochondrial DNA cytochrome b gene ...

Artificial light can change the behaviour of aquatic organisms, although the direction of response can be species and life-stage specific. Open net-pen salmon farms in British Columbia, Canada, routinely illuminate their net-pens during the winter and spring, with unknown consequences on the abundance and distribution of marine fish and invertebrates. Paired lit and control samples consisting o...

Food consumption and growth of juvenile arrowtooth flounders Atheresthes stomias were examined in the laboratory. Weight gain, Y (in % BW/d) was related linearly to food consumption, X (in J/g/d): Y = 0.0033X 0.0564; r 2 = 0.75 at 4°C. Fish 30 to 300 g had similar energy conversion efficiencies. When fed Pacific herring Clupea pallasi at 4°C, maintenance ration was estimated to be 17 J/g/d. Min...