scholarly journals Morphological Changes in the Midgut, Midgut Gland and Hindgut during the Larval and Postlarval Development of the Red King Crab Paralithodes camtschaticus

1997 ◽  
Vol 63 (5) ◽  
pp. 746-754 ◽  
Author(s):  
Fernando A. Abrunhosa ◽  
Jiro Kittaka
Keyword(s):  
Morphological Changes ◽  
Red King Crab ◽  
Paralithodes Camtschaticus ◽  
Midgut Gland ◽  
King Crab

Trophic niche of the invasive red king crab Paralithodes camtschaticus in a benthic food web

2017 ◽  
Vol 565 ◽  
pp. 113-129 ◽  
Author(s):  
MM Fuhrmann ◽  
T Pedersen ◽  
EM Nilssen
Keyword(s):  
Food Web ◽  
Trophic Niche ◽  
Red King Crab ◽  
Paralithodes Camtschaticus ◽  
King Crab ◽  
Benthic Food Web ◽  
Benthic Food

Selecting species specific vitality metrics to predict red king crab (Paralithodes camtschaticus) discard survival

2021 ◽  
Vol 240 ◽  
pp. 105964
Author(s):  
Cory Lescher ◽  
Noëlle Yochum ◽  
Brad Harris ◽  
Nathan Wolf ◽  
John Gauvin
Keyword(s):  
Red King Crab ◽  
Paralithodes Camtschaticus ◽  
King Crab ◽  
Species Specific

scholarly journals Low allozyme heterozygosity in North Pacific and Bering Sea populations of red king crab (Paralithodes camtschaticus): adaptive specialization, population bottleneck, or metapopulation structure?

2011 ◽  
Vol 68 (3) ◽  
pp. 499-506 ◽  
Author(s):  
W. Stewart Grant ◽  
Susan E. Merkouris ◽  
Gordon H. Kruse ◽  
Lisa W. Seeb
Keyword(s):  
Bering Sea ◽  
North Pacific ◽  
Population Bottleneck ◽  
Ice Age ◽  
Red King Crab ◽  
Paralithodes Camtschaticus ◽  
Allozyme Diversity ◽  
King Crab ◽  
Metapopulation Structure ◽  
Adaptive Specialization

AbstractGrant, W. S., Merkouris, S. E., Kruse, G. H., and Seeb, L. W. 2011. Low allozyme heterozygosity in North Pacific and Bering Sea populations of red king crab (Paralithodes camtschaticus): adaptive specialization, population bottleneck, or metapopulation structure? – ICES Journal of Marine Science, 68: . Populations of red king crab in the North Pacific and Bering Sea have declined in response to ocean-climate shifts and to harvesting. An understanding of how populations are geographically structured is important to the management of these depressed resources. Here, the Mendelian variability at 38 enzyme-encoding loci was surveyed in 27 samples (n = 2427) from 18 general locations. Sample heterozygosities were low, averaging HE = 0.015 among samples. Weak genetic structure was detected among three groups of populations, the Bering Sea, central Gulf of Alaska, and Southeast Alaska, but without significant isolation by distance among populations. A sample from Adak Island in the western Aleutians was genetically different from the remaining samples. The lack of differentiation among populations within regions may, in part, be due to post-glacial expansions and a lack of migration-drift equilibrium and to limited statistical power imposed by low levels of polymorphism. Departures from neutrality may reflect the effects of both selective and historical factors. The low allozyme diversity in red king crab may, in part, be attributable to adaptive specialization, background selection, ice-age population bottlenecks, or metapopulation dynamics in a climatically unstable North Pacific.

scholarly journals Fishery-induced changes in Norwegian red king crab (Paralithodes camtschaticus) reproductive potential

2013 ◽  
Vol 71 (2) ◽  
pp. 365-373 ◽  
Author(s):  
Ann Merete Hjelset
Keyword(s):  
Egg Production ◽  
Barents Sea ◽  
Reproductive Potential ◽  
Size Composition ◽  
Red King Crab ◽  
Paralithodes Camtschaticus ◽  
King Crab ◽  
Males And Females ◽  
Induced Changes ◽  
Individual Fecundity

Abstract Hjelset, A. M. 2014. Fishery-induced changes in Norwegian red king crab (Paralithodes camtschaticus) reproductive potential. – ICES Journal of Marine Science, 71: 365–373. The introduced red king crab (Paralithodes camtschaticus) in the Barents Sea supports a valuable fishery in northern Norway. In this paper, I examine the effect of the increased harvest rate and the recently added female quota on the potential egg production of the stock. The size ranges of males and females in the period 1995–2011 were recorded, and estimated stock abundance of ovigerous females and established individual fecundity parameters from 2000–2007 were used to assess the reproductive potential of the stock from 1995–2011. The upper size ranges of males and females decreased throughout the period studied, presumably mainly due to fishing. The change in size composition among ovigerous females and functional mature males, and the reduced mean individual fecundity in the stock seem to have had a negative effect on the potential egg production of the stock.

Effects of the invasive red king crab (Paralithodes camtschaticus) on soft-bottom fauna in Varangerfjorden, northern Norway

2010 ◽  
Vol 41 (3) ◽  
pp. 467-479 ◽  
Author(s):  
Eivind Oug ◽  
Sabine K. J. Cochrane ◽  
Jan H. Sundet ◽  
Karl Norling ◽  
Hans C. Nilsson
Keyword(s):  
Bottom Fauna ◽  
Red King Crab ◽  
Paralithodes Camtschaticus ◽  
Soft Bottom ◽  
King Crab ◽  
Northern Norway

Studies on red king crab (Paralithodes camtschaticus) introduced to the Barents Sea

2002 ◽  
Author(s):  
K.E. Jorstad ◽  
E. Farestveit ◽  
H. Rudra ◽  
A.-L. Agnalt ◽  
S. Olson
Keyword(s):  
Barents Sea ◽  
Red King Crab ◽  
Paralithodes Camtschaticus ◽  
King Crab ◽  
The Barents Sea

Aggregating Behavior of Ovigerous Female Red King Crab, Paralithodes camtschaticus, in Auke Bay, Alaska

1993 ◽  
Vol 50 (4) ◽  
pp. 750-758 ◽  
Author(s):  
Robert P. Stone ◽  
Charles E. O'Clair ◽  
Thomas C. Shirley
Keyword(s):  
Shallow Water ◽  
Nearest Neighbor ◽  
Ovigerous Female ◽  
Early Spring ◽  
Late Winter ◽  
Red King Crab ◽  
Paralithodes Camtschaticus ◽  
Adult Males ◽  
Age Classes ◽  
King Crab

Ovigerous female red king crab, Paralithodes camtschaticus, monitored with ultrasonic biotelemetry, displayed distinct seasonal shifts in habitat use and bathymetric distribution. Crab occupied deep water between June and mid-November, relatively shallow water between mid-November and early March, and returned to deeper water prior to molting and mating in spring. Females were nonrandomly distributed within both depth ranges but seasonally changed their behavior and degree of association with conspecifics. Tagged crab were more aggregated (lower mean nearest neighbor distances) in winter than in summer and fall (F-test, P < 0.01). Winter SCUBA observations supported these results; females of mixed age-classes formed dense aggregations in shallow water, and crab exhibited "podding" behavior similar to that reported for younger age-classes. Adult males were associated with aggregations during late winter and early spring. Observations from the manned submersible Delta indicated that females were nonrandomly distributed in the deepwater habitat as well and probably formed loosely knit feeding aggregations there. Seasonal changes in aggregation densities and benthic areas used were the same during the two consecutive years of this study.

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