The utility of the fatty acid biomarker (FAB) approach in fisheries ecology is limited by our understanding of how
biotic and abiotic factors determine dietary markers in fish tissues. An 8-week laboratory experiment was
conducted on two species of juvenile gadids (Pacific cod, Gadus macrocephalus and walleye Pollock, Theragra
chalcogramma)...
Full Text:
Supplemental Material 1: Total lipids and lipid classes for flesh of juvenile (a) Pacific cod and 2
(b
The utility of the fatty acid biomarker (FAB) approach in fisheries ecology is limited by our understanding of how
biotic and abiotic factors determine dietary markers in fish tissues. An 8-week laboratory experiment was
conducted on two species of juvenile gadids (Pacific cod, Gadus macrocephalus and walleye Pollock, Theragra
chalcogramma)...
Full Text:
Pacific juvenile gadids: A laboratory feeding study
LouiseA. Copemana,b,⁎, Benjamin J. Laurel c,1
The thermal sensitivity of Arctic fish species is poorly understood, yet such data are a critical component of forecasting and understanding ecosystem impacts of climate change. In this study, we experimentally measured temperature-dependent growth and routine swim activity in the juvenile stage of two Arctic gadids (Arctic cod, Boreogadus saida...
The utility of the fatty acid biomarker (FAB) approach in fisheries ecology is limited by our understanding of how biotic and abiotic factors determine dietary markers in fish tissues. An 8-week laboratory experiment was conducted on two species of juvenile gadids (Pacific cod, Gadus macrocephalus and walleye Pollock, Theragra chalcogramma)...
Populations of blue king crab (BKC) (Paralithodes platypus Brandt, 1850) have declined in Alaskan waters
over recent decades, and substantial effort is being made to rehabilitate the once important fishery with releases
of hatchery-reared juveniles. However, little is known about the species' first year of post-settlement
life. This study was...
During early development, oviparous fish species must use finite lipid and fatty acid (FA) reserves for both catabolism and structural components. In cold environments, developing fish have the additional constraint of maintaining membrane fluidity for metabolic efficiency (homeoviscous adaptation), resulting in further demand on lower melting point FAs like n-3...
Two species of burrowing shrimp occur in high densities in US West Coast estuaries, the ghost shrimp, Neotrypaea californiensis, and the blue mud shrimp, Upogebia pugettensis. Both species of shrimp are considered ecosystem engineers as they bioturbate and irrigate extensive galleries within the sediment. While their burrows comprise a dominant...
Little is known about the nutrition or lipid metabolism of cold-water crabs, particularly in the North Pacific. We undertook a 2-part study to understand more completely the energetics and nutritional requirements of juvenile red king crab (RKC; Paralithodes canusehaticus). First, we investigated changes in proximate composition, total lipids (TLs), lipid...
Climate models indicate the Arctic will undergo dramatic environmental change with forecasted increases in temperature and river runoff. Saffron cod (Eleginus gracilis) is abundant in nearshore waters and appears in the diet of many Arctic sea birds and marine mammals; however, little is known about its early ecology and consequently...
Changing environmental conditions in the North Pacific are altering the lipid/fatty acid (FA) composition of zooplankton assemblages, but the consequences to resident fish larvae are unknown. In the laboratory, we reared Pacific cod Gadus macrocephalus larvae over 4 wk on prey enriched with varying levels of 2 essential FAs (docosahexaenoic...