Qualitative observations of Dungeness crabs, Cancer magister
, in and around traps: evidence of resource guarding and clustering.
Five years ago, he and a postdoctoral student at the UO's Oregon Institute of Marine Biology in Charleston put light traps in Coos Bay to measure the "megalopae" of Cancer magister
, Dungeness' Latin name.
KEY WORDS: Dungeness crab, Cancer magister
, mating, Oregon, fertilization, fishery
x Cancer gracilis x Cancer gracilis (juvenile) x Cancer magister
(juvenile) x Cancer oregonensis x x x Cancer oregonensis (gravid) x x Cancer oregonensis (juvenile) x Cancer productus (juvenile) x x Caprellid amphipods x Chlarnvs hastata (6-7 mm) x Cllnocardlnm nuttalln x Cr.
Predation on Dungeness crabs, Cancer magister
, in central California.
Habitat selection by young-of-the-year Dungeness crab Cancer magister
and predation risk in intertidal habitats.
ABSTRACT Claw morphology and prey consumption rates of two estuarine crab species were compared: the introduced European green crab, Carcinus maenas, and the native Dungeness crab, Cancer magister
Catch-per-unit-of-effort studies of northern California Dungeness crabs, Cancer magister
Laboratory observations further showed that Cancer magister
may be displaced from its habitat and disturbed during foraging in the presence of green crabs (McDonald et al.
Crassostrea gigas shell taken from Willapa Bay has also been planted in Grays Harbor, the next embayment northward, to provide nursery habitat for Dungeness crab Cancer magister
as mitigation for the loss of an estimated 650,000 y1+ crabs by navigation channel dredging in 1990 (Visser et al.
by implementing strategies already used in other fisheries) like the one for Dungennes crab Cancer magister
m California, United States, where the use of mechanisms to facilitate the escape of crabs from lost traps is mandatory (Breen 1990).
johngarthi population, and given that the fishery is in its early development stages, the implementation of management measures aimed at avoiding or reducing such effects seems convenient, by implementing strategies already used in other fisheries, like the one for Dungennes crab Cancer magister
in California, United States, where the use of mechanisms to facilitate the escape of crabs from lost traps is mandatory (Breen 1990).