These are the data from a laboratory experiment in which DNA content was removed from blood smears and extracted. The blood smears were either stained with Giemsa-stain or remained un-stained. Some of the un-stained smears were coverslipped. Host and parasitic DNA was amplified using conventional PCR.

Stock assessment of Alaskan red king crab, Paralithodes camtschaticus (Tilesius, 1815), can be improved by incorporating reproductive output, which requires an understanding of the size-fecundity relationship, interannual and seasonal variability in fecundity, and maternal size effects on embryo and larval quality. We collected red king crab egg clutches from Bristol Bay, Alaska, in summer of 2007-2010 and autumn of 2007-2009 and estimated fecundity. A monitoring project examining the size-fecundity relationship began in 2012 and data is collected every other year.In June 2009 and 2010 we collected embryo clutches of recently extruded red king crab embryos in Bristol Bay, Alaska, to assess embryo quality based on dry weight, carbon and nitrogen content. To assess larval quality, we collected ovigerous females from Bristol Bay in 2007 and reared them in the laboratory until larval hatching in 2008. Larval quality based on dry weight, carbon and nitrogen content, and time to 50% mortality under starvation conditions was assessed.

An experimental bottom longline survey was conducted at depths >1,000 m in the western Gulf of Alaska in August 2008. The objective was to investigate the abundance and biological characteristics of giant grenadier (Albatrossia pectoralis) and sablefish (Anoplopoma fimbria) in deep waters of the Gulf of Alaska that have not been previously sampled in fishery surveys. Several difficulties were encountered during the fishing operations which indicate special problems may occur when fishing longlines at these depths, including substantial gear drift after setting and hang-ups on the bottom that caused the longline to part. Although results were not conclusive because only stations in the western Gulf of Alaska were sampled, there was consistency in the results which provides an indication of fish abundance and distribution in depths >1,000 m. Catch rates of giant grenadier were relatively high, although not as large as those in nearby longline survey stations in depths 1,000 m. Besides giant grenadier, Pacific grenadier (Coryphaenoides acrolepis) was the only other species caught in substantial numbers. At one deep-water station, Pacific grenadier were extremely abundant and were caught on 56% of the longlines hooks.

This dataset is part of a laboratory experiment, which evaluated how varying ratios of prey species (year-0 blue and red king crabs) and habitat type (shell and cobble) affect prey preference of year-1 red king crabs. The data includes experimental duration, tank number, predator species, prey species, substrate type, initial and final prey densities, number of prey eaten, crypsis indices, and survival.

This data is from an experiment designed to test the viability of using hatchery reared crab to supplement wild stocks and to determine the optimal density for future releases. Crab were released by divers into 5 x 5 m quadrats marked with ground line at three densities: 25, 50, and 75 m-2. Researchers monitored the crab density inside the plots, in order to estimate survival, as well as outside the plots, to estimate crab movement. In addition, they determined predator densities and performed tethering experiments on red king crab to see if predator density or predation risk differed among the density treatments.

The data from this study, describes embryo development in Golden king crab, Lithodes aequispinus. Six female multiparous golden king crab were captured from the Aleutian Islands, Alaska, and mated in the laboratory. Their embryos were photographed and staged on average once every 9 days throughout embryogenesis.

In November, 2006, Oceanographic observations were initiated during the resupply cruises to the Little Port Walter Research Station on lower Baranof Island, Southeast Alaska. Six sampling stations were selected starting at mid channel, Stephans Passage near Snettisham Inlet then, near the intersection of Stephans Passage and Fredrick Sound by Brothers Islands, then, near the intersection of Fredrick Sound and Chatham Strait off of Kingsmill Point and then three stations across lower Chatham Strait just north of the latitude of Little Port Walter. An SBE19plus conductivity, temperature and depth recorder was used to take water samples at a speed of approximately one meter per second from the surface to a depth of 250 meters. These observations are intended to be part of the Southeast Alaska Ocean Observing System (SEAOOS). Data are stored as CNV files, HEX files and jpg files on Frank Throwers computer.

Invertebrate catch and effort data collected by observers in the United States commercial groundfish fisheries of Alaska (Bering Sea, Aleutian Islands and Gulf of Alaska, 1993-2017.
Subset of the Alaska observer groundfish data, aggregating by 400km square cells and eliminating cells with less than three vessels to create a public version of the Alaska groundfish observer data.
Purpose: Allows visitors use of the aggregated observer data to create maps. These maps are designed to provide a better understanding of where groundfish are caught in the Aleutian Islands, Bering Sea and Gulf of Alaska.
Supplemental_Information: http://www.afsc.noaa.gov/FMA/fma_database.htm
Number 4 of a set of 5 files:
1. AFSC/FMA: North Pacific Groundfish and Halibut Observer Program Fishery Statistics - Rockfish Catch
2. AFSC/FMA: North Pacific Groundfish and Halibut Observer Program Fishery Statistics - Flatfish Catch
3. AFSC/FMA: North Pacific Groundfish and Halibut Observer Program Fishery Statistics - Most fishes (excluding flatfishes and rockfishes) Catch
4. AFSC/FMA: North Pacific Groundfish and Halibut Observer Program Fishery Statistics - Invertebrates Catch
5. AFSC/FMA: North Pacific Groundfish and Halibut Observer Program Fishery Statistics - Effort Statistics

This dataset is from a laboratory study that investigated the effect of temperature and tissue type on fatty acid signatures of Pacific cod and walleye pollock.

The Groundfish SAFE Economic Report, published annually as a supplement to the Stock Assessment and Fishery Evaluation Reports for Bering Sea and Aleutian Islands and Gulf of Alaska groundfish, summarizes economic information about the federal groundfish fisheries off Alaska. The Economic Report includes a core set of tables summarizing catch, discards and bycatch; ex-vessel value and price; wholesale production, value, and price; fishery participation by small entities; and fishing effort.