99) between the size of selected alternative structures and fork length for pollock and Atka mackerel
Therefore, we developed regression formulae to estimate fish length from seven diagnostic cranial structures of walleye pollock (Theragra chalcogramma) and Atka mackerel
Steller sea lions from areas that did not experience a decline, or experienced a lower rate of decline, preyed on both walleye pollock and Atka mackerel
along with several other groups of prey species.
We found fishes, particularly Atka Mackerel
(Pleurogrammus monopterygius) and snailfishes (Liparidae) to be more important, and hermit crabs and Horsehair Crabs (Erimacrus isenbeckii) to be less important in the Aleutian Islands than in the eastern Bering Sea.
The diet of Steller sea lions consists of several commercially harvested species, including walleye pollock, Atka mackerel
, Pleurogrammus monopterygius; Pacific cod, Pacific salmon, and herring, as well as noncom mercially harvested species (e.
Yellowtail Pleurogrammus monopterygius Atka mackerel
Abstract--The timing and duration of the reproductive cycle of Atka mackerel
(Pleurogrammus monopterygius) was validated by using observations from time-lapse video and data from archival tags, and the start, peak, and end of spawning and hatching were determined from an incubation model with aged egg samples and empirical incubation times ranging from 44 days at a water temperature of 9.
Nonetheless, it has been determined that the decline coincides with development and growth of industrialized groundfish fisheries, which target the same prey species that SSL principally use for survival--pollock, Atka mackerel
, and Pacific cod.
7) Groundfish including Walleye pollock and Atka mackerel
represent a significant portion of their diet.
An Atka mackerel
on display in the Coastal Waters Gallery was brought to the aquarium by a thoughtful charter fishing boat skipper and a customer who knew they had a rare catch after they landed the mackerel near Seal Rock.
fishing in waters off the islands, known in Japan as the Northern Territories, is also scheduled to start in mid-September, according to the fisheries pact.
Throughout the book, as methods are introduced, they are illustrated with examples based on either hypothetical data (to make a specific point about the analysis) or real data, so that one can learn about Pacific halibut, shrimp in the Gulf of Mexico, Pacific Ocean snappers, various salmon species, Atka mackerel
, rougheye rockfish, rainbow trout, yellowfin tuna, walleye pollock, West Coast of North America sablefish, Hudson River striped bass, and others.