نتایج جستجو برای: spottybelly greenling
تعداد نتایج: 43 فیلتر نتایج به سال:
This article highlights the utility of vibracore technology to sample deep shell midden deposits on Central Pacific Coast British Columbia, Canada. Analysis six core samples and 21 radiocarbon dates revealed that archaeological extended a depth 544 cm below surface occupation began approximately 6,000 years ago, continuing into sixteenth century AD. Zooarchaeological identification fine screene...
Abstract Intraspecific variation in external and internal pigmentation is common among fishes explained by a variety of biological ecological factors. Blue-colored flesh relatively rare but has been documented some species the sculpin, greenling, perch families. Diet, starvation, photoprotection, camouflage have all suggested as proximate mechanisms driving blue flesh, causal factors are poorly...
Recreational and subsistence fishing plays a major role in the lives of many people, although most Americans obtain their fish from supermarkets or other commercial sources. Fish consumption has generally increased in recent years, largely because of the nutritional benefits. Recent concerns about contaminants in fish have prompted federal and state agencies to analyze fish (especially freshwat...
BACKGROUND Persistent organic pollutants (POPs), including polychlorinated biphenyls (PCBs) and chlorinated pesticides, have been shown to have many adverse human health effects. These contaminants therefore may pose a risk to Alaska Natives that follow a traditional diet high in marine mammals and fish, in which POPs bioaccumulate. METHODS AND FINDINGS This study examined the levels of PCBs ...
The survival of juvenile marine fishes, which support commercial fisheries and provide a prey resource, is often dependent on conditions in protective nearshore habitats. We examined the trophic interactions several fishes Gulf Alaska (GOA) including Pacific cod (Gadus microcephalus), saffron (Eleginus gracillis), walleye pollock chalcogrammus), sand lance (Ammodytes hexapterus), herring (Clupe...
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