Ecology of reproduction of the red king crab

Gabaev, Delik D.

doi:10.1134/s1067413607020087

Cited by 5 publications

(5 citation statements)

References 2 publications

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“…Each cycle of cooling produced coastal glaciers that extirpated populations of near‐shore marine species in the Northeast Pacific (Mann and Hamilton 1995; Barrie and Conway 1999). Red king crab populations are especially vulnerable to glaciated coastlines, because shallow‐water nursery areas are needed to complete the crab’s life‐history cycle (Shirley and Shirley 1989b; Gabaev 2007). The last glaciation reached a maximum about 18 kyr ago, but most of the coastal areas along the Northeast Pacific were not suitable for colonization until 15 kyr ago, or until after the Younger Dryas climate reversal 12–11 kyr ago (Mix et al.…”

Section: Discussionmentioning

confidence: 99%

Incorporating deep and shallow components of genetic structure into the management of Alaskan red king crab

Grant

Cheng

2012

Evolutionary Applications

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Observed patterns of genetic variability among marine populations are shaped not only by contemporary levels of gene flow, but also by divergences during historical isolations. We examined variability at 15 SNP loci and in mtDNA sequences (COI, 665 bp) in red king crab from 17 localities in the North Pacific. These markers define three geographically distinct evolutionary lineages (SNPs, FCT = 0.054; mtDNA ΦCT = 0.222): (i) Okhotsk Sea–Norton Sound–Aleutian Islands, (ii) southeastern Bering Sea–western Gulf of Alaska, and (iii) Southeast Alaska. Populations in the Bering Sea and in Southeast Alaska are genetically heterogeneous, but populations in the center of the range are homogeneous. Mitochondrial DNA diversity drops from h = 0.91 in the northwestern Pacific to h = 0.24 in the Southeast Alaska. Bayesian skyline plots (BSPs) indicate postglacial population expansions, presumably from ice-age refugia. BSPs of sequences simulated under a demographic model defined by late Pleistocene temperatures failed to detect demographic variability before the last glacial maximum. These results sound a note of caution for the interpretation of BSPs. Population fragmentation in the Bering Sea and in Southeast Alaskan waters requires population management on a small geographic scale, and deep evolutionary partitions between the three geographic groups mandate regional conservation measures.

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Section: Discussionmentioning

confidence: 99%

Incorporating deep and shallow components of genetic structure into the management of Alaskan red king crab

Grant

Cheng

2012

Evolutionary Applications

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“…Year-class strength has been a focus of research for understanding variations in the Bering Sea biomass of king crab. Temperature, storm conditions, duration of the ice period in shallow inlets, river discharge dynamics determining food supply, moulting mortality, prey availability, and species composition have been identified as factors affecting the mortality of the larvae in their native area (Kurata, 1959;Paul et al, 1979Paul et al, , 1990Shirley and Shirley, 1989;Gabaev, 2007).…”

Section: Control Factorsmentioning

confidence: 99%

“…Several authors have concluded that the collapse of Pacific stocks of king crab appears to be a large-scale phenomenon, suggesting that climate forcing of recruitment is strong (e.g. Orensanz et al, 1998;Zheng and Kruse, 2000;Gabaev, 2007). The connection between recruitment and climate regimes, however, remains a subject of speculation owing to a lack of information on time and spatial scales relevant to specific populations (Orensanz et al, 1998).…”

Section: Control Factorsmentioning

confidence: 99%

“…Cannibalism has been documented in laboratory experiments and related to cohort density and cover (Rounds et al, 1989;Stevens and Swiney, 2005), along with the availability of alternative food (Brodersen et al, 1989). Habitat availability is believed to influence the population dynamics of king crab (Loher and Armstrong, 2000;Stevens and Swiney, 2005;Gabaev, 2007), and cannibalism on small individuals may be particularly important in the Barents Sea, where the crab is abundant (Haugan, 2004). and Matyushkin (2003) have looked at the diet of post-larval crabs ( Supplementary Table S1).…”

Section: Control Factorsmentioning

confidence: 99%

“…Although natural cycles in species abundance and environmental factors can partly explain the population fluctuations observed, intense fishing pressure has contributed to the collapse of Pacific king crab stocks (Zheng et al, 1995;Orensanz et al, 1998;Livingston et al, 1999;Kruse, 2000, 2003;Gabaev, 2007). Reductions in spawning-stock biomass (SSB) may limit recruitment directly (Zheng et al, 1995;Zheng and Kruse, 2003), and a weak depensatory effect on recruitment under low effective SSB has been identified (Zheng et al, 1995).…”

Section: Control Factorsmentioning

confidence: 99%

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Establishment and ecosystem effects of the alien invasive red king crab (Paralithodes camtschaticus) in the Barents Sea–a review

Falk-Petersen

Renaud

Anisimova

2011

ICES Journal of Marine Science

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Falk-Petersen, J., Renaud, P., and Anisimova, N. 2011. Establishment and ecosystem effects of the alien invasive red king crab (Paralithodes camtschaticus) in the Barents Sea – a review. – ICES Journal of Marine Science, 68: . Since its introduction to the Barents Sea from the North Pacific in the 1960s, the red king crab (Paralithodes camtschaticus) has become invasive. The crab represents an important source of income, but also a potential threat to the highly productive fisheries in the region through its ecosystem impacts. A literature review was conducted, identifying factors contributing to the success of the crab as well as its interactions with native biota. Characteristics of the Barents Sea and the crab itself that may explain its success include suitable habitat for settlement and growth of the larvae; the wide range of habitats occupied throughout its life history, high mobility, generalist prey choice, low fishing pressure during establishment, and the lack of parasites. Being a large, bottom-feeding omnivore of great mobility, the king crab can significantly impact the ecosystem. Reduced benthic diversity and biomass have been registered in invaded areas. Important prey items include large epibenthic organisms whose structures also represent important habitat. Impacts on commercial and non-commercial fish species, through egg predation or indirect interactions, are difficult to detect and predict.

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First record of the decapod-egg predator Ovicides paralithodis (Nemertea, Carcinonemertidae) from the snow crab Chionoecetes opilio (Decapoda, Brachyura)

Hookabe

Motobayashi

Jimi

et al. 2022

Parasitology International

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Ecology of reproduction of the red king crab

Cited by 5 publications

References 2 publications

Incorporating deep and shallow components of genetic structure into the management of Alaskan red king crab

Incorporating deep and shallow components of genetic structure into the management of Alaskan red king crab

Establishment and ecosystem effects of the alien invasive red king crab (Paralithodes camtschaticus) in the Barents Sea–a review

First record of the decapod-egg predator Ovicides paralithodis (Nemertea, Carcinonemertidae) from the snow crab Chionoecetes opilio (Decapoda, Brachyura)

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