This report summarizes the results of crab studies undertaken during the fall of 1957 and 1958 in the Columbia River estuary. The purpose of this project was to determine the shell condition of the crabs available in this area during the period when crab fishing is prohibited in the ocean,...
Heart rates and amplitudes were measured for both intact
animals (in situ) and isolated hearts (in vitro) of the Dungeness crab,
Cancer magister, exposed to low levels in oxygen. Recordings were
also made of gill ventilation rate by measuring the frequency of
scaphognathite (gill bailer) beats.
Both the in vitro...
The behavior of the shore crab Hemigrapsus oregonensis was assessed
with and without exposure to polychlorinated biphenyls (Aroclor 1260).
After describing the crab's behavioral repertoire, activity budgets were
developed from observations of the time crabs spent in 20 categories of
shelter use, posture, and activity while held in habitat replicas...
The acoustic signals produced by the Dungeness crab (Cancer
magister) were investigated. The signals were examined for duration times and frequency content. The signals were converted from analog to digital form, and the autocorrelation functions and the power density spectrums were determined.
The signals produced by Dungeness and Japanese red...
The purpose of this study is to describe Dungeness crab marketing
from the ocean floor to the ultimate consumer; to identify
relations among the Oregon Dungeness crab industry, the Pacific
Coast Dungeness crab industry, and the Alaska King crab industry;
and to specify the relationships between fishermen's prices for
Dungeness...
The purpose of this study is to describe Dungeness crab marketing
from the ocean floor to the ultimate consumer; to identify
relations among the Oregon Dungeness crab industry, the Pacific
Coast Dungeness crab industry, and the Alaska King crab industry;
and to specify the relationships between fishermen's prices for
Dungeness...
Published June 1983. Facts and recommendations in this publication may no longer be valid. Please look for up-to-date information in the Sea Grant Catalog: http://seagrant.oregonstate.edu/publications
The California Current Ecosystem (CCE) is a dynamic marine ecosystem from which many socioeconomically important fisheries species are harvested. Here, a genotyping-by-sequencing (GBS) approach was used to examine genomic variation in an early life stage (megalopae) of the Dungeness crab (Cancer magister), which constitutes the most valuable single-species commercial fishery...
Dungeness crab is an important fishery on the Pacific Coast.
The processing subsystem of the fishery is hampered by a variety of
problems that have acted to impede technological innovations that
could improve efficiency and sanitation in seafood plants. This paper
provides background for problems encountered by the processors, discusses...
The design and testing of a portable pumping system for use in
the hydraulic excavation of commercial crab pots buried by ocean
sediment was undertaken. The resulting portable system retained the
four major components of the pumping systems presently used by
commercial fishermen: engine, pump, fire hose, and nozzle. Because...
