INSHORE TANNER CRAB (CHIONOECETES BAIRDI) BIOLOGY IN A CENTRAL COAST INLET, BRITISH COLUMBIA, CANADA

AbstractCoring of shell-midden sites provides a regional chronology of site settlement in the Namu vicinity on the central coast of British Columbia. Coring proved an accurate and cost-effective alternative to traditional test-excavation, and its application in only two short field seasons doubled the number of sites tested in this region. The dating of basal cultural deposits from the cores shows initial occupation of sites ranging from 10,000 to 800 B.P. These dates exhibit a strong linear relationship with the current elevation of deposits above average high tide, suggesting that the settlement history of known shell-midden sites in this region is strongly linked to gradual long-term decline in relative sea levels.

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Regional Variation in the Size of Maturity of Two Species of Tanner Crab (Chionoecetes bairdi and C. opilio) in the Eastern Bering Sea, and Its Use in Defining Management Subareas

Canadian Journal of Fisheries and Aquatic Sciences ◽

10.1139/f81-022 ◽

1981 ◽

Vol 38 (2) ◽

pp. 163-174 ◽

Cited By ~ 62

Author(s):

David A. Somerton

Keyword(s):

Bering Sea ◽

Regional Variation ◽

Carapace Width ◽

Minimum Size ◽

Computer Technique ◽

Eastern Bering Sea ◽

Commercial Harvest ◽

Tanner Crab ◽

Size Limits ◽

Chionoecetes Bairdi

Minimum size limits for the commercial harvest of tanner crab (Chionoecetes bairdi and C. opilio) are based on the sizes of sexual maturity. Establishing such size limits in the eastern Bering Sea is complicated by a large regional variation in the size of maturity. A computer technique was developed which partitioned the eastern Bering Sea into subareas that were relatively homogeneous with respect to the size of maturity. The best partitioning for C. bairdi was a separation of the eastern Bering Sea into two subareas along 167°15′N longitude. No acceptable partitioning could be found for C. opilio. The size of 50% maturity for male C. bairdi was estimated to be 108.9 mm carapace width in the western subarea and 117.0 mm in the eastern subarea. The size of maturity upon which the current minimum size for C. bairdi is based is nearly the same as the size estimated for the western subarea but significantly less than the size estimated for the eastern subarea.Key words: crabs, size of maturity, Chionoecetes bairdi, Chionoecetes opilio, tanner crab, eastern Bering Sea

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Molecular cloning of the crustacean hyperglycemic hormone (CHH) precursor from the X-organ and the identification of the neuropeptide from sinus gland of the Alaskan Tanner crab, Chionoecetes bairdi

General and Comparative Endocrinology ◽

10.1016/j.ygcen.2009.03.012 ◽

2009 ◽

Vol 162 (2) ◽

pp. 129-133 ◽

Cited By ~ 14

Author(s):

J. Sook Chung ◽

Sarah Bembe ◽

Sherry Tamone ◽

Ebony Andrews ◽

Heidy Thomas

Keyword(s):

Molecular Cloning ◽

Sinus Gland ◽

Crustacean Hyperglycemic Hormone ◽

Tanner Crab ◽

Hyperglycemic Hormone ◽

Chionoecetes Bairdi

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Toward a luminescence chronology for coastal dune and beach deposits on Calvert Island, British Columbia central coast, Canada

Quaternary Geochronology ◽

10.1016/j.quageo.2014.12.004 ◽

2015 ◽

Vol 30 ◽

pp. 275-281 ◽

Cited By ~ 8

Author(s):

Christina M. Neudorf ◽

Olav B. Lian ◽

Ian J. Walker ◽

Dan H. Shugar ◽

Jordan B.R. Eamer ◽

...

Keyword(s):

British Columbia ◽

Coastal Dune ◽

Central Coast

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Characterization of the gene repertoire and environmentally driven expression patterns in Tanner crab (Chionoecetes bairdi)

10.1101/2021.05.10.443482 ◽

2021 ◽

Author(s):

Grace Crandall ◽

Pamela C Jensen ◽

Sam White ◽

Steven Roberts

Keyword(s):

Disease Transmission ◽

Expression Patterns ◽

Ocean Warming ◽

Lipid Storage ◽

Host Susceptibility ◽

Gene Repertoire ◽

Important Species ◽

Tanner Crab ◽

Chionoecetes Bairdi ◽

Insight Into

Tanner crab (Chionoecetes bairdi) are an economically important species that is threatened by ocean warming and Bitter Crab Disease, which is caused by an endoparasitic dinoflagellate, Hematodinium. Little is known about disease transmission or its link to host mortality, or how ocean warming will affect pathogenicity or host susceptibility. To provide a transcriptomic resource for the Tanner crab we generated a suite of RNA-seq libraries encompassing pooled hemolymph samples from crab displaying differing infection status and maintained at different temperatures (ambient (7.5˚C), elevated (10˚C), or decreased (4˚C)). After assembling a transcriptome and performing a multifactor differential gene expression analysis, we found genes influenced by temperature in relation to infection, and detected some of those genes over time at the individual level using RNAseq data from one crab. Biological processes associated with those genes include lipid storage, transcription, response to oxidative stress, cell adhesion, and morphogenesis. Alteration in lipid storage and transcription provide insight into how temperature impacts energy allocation in Hematodinium infected crabs. Alteration in expression patterns in genes associated with morphogenesis could suggest hemocytes were changing morphology and/or type in response to temperature. This project provides insight into how Hematodinium infection could influence crab physiology as oceans warm.

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Distinguishing between two canopy-forming kelp species (Macrocystis sp. and Nereocystis sp.) on the central coast of British Columbia using object-based image analysis with WorldView-2 pansharpened imagery

10.4095/305918 ◽

2017 ◽

Author(s):

L Y Reshitnyk ◽

E M Rubidge

Keyword(s):

British Columbia ◽

Image Analysis ◽

Central Coast ◽

Object Based Image Analysis ◽

Kelp Species ◽

Object Based

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A glacial readvance during retreat of the Cordilleran Ice Sheet, British Columbia central coast

Quaternary Research ◽

10.1017/qua.2017.16 ◽

2017 ◽

Vol 87 (3) ◽

pp. 468-481 ◽

Cited By ~ 7

Author(s):

Jordan B. R. Eamer ◽

Dan H. Shugar ◽

Ian J. Walker ◽

Olav B. Lian ◽

Christina M. Neudorf ◽

...

Keyword(s):

British Columbia ◽

Pacific Northwest ◽

Ice Sheet ◽

Cold Climate ◽

Haida Gwaii ◽

Central Coast ◽

Geomorphic Mapping ◽

The Pacific ◽

Cordilleran Ice Sheet ◽

The Last Glacial

AbstractDescriptions of the Cordilleran Ice Sheet retreat after the last glacial maximum have included short-lived readvances occurring during the Older and Younger Dryas stadial periods and into the Holocene, but identification of these events has been largely limited to southwest and central British Columbia and northwest Washington State. We present evidence of a late Pleistocene readvance of Cordilleran ice occurring on the central coast of British Columbia on Calvert Island, between northern Vancouver Island and Haida Gwaii. Evidence is provided by sedimentological and paleoecological information contained in a sedimentary sequence combined with geomorphic mapping of glacial features in the region. Results indicate that a cold climate existed between 15.1 and 14.3 cal ka BP and that ice advanced to, and then retreated from, the western edge of the island between 14.2 and 13.8 cal ka BP. These data provide the first evidence of a major fluctuation in the retreating ice sheet margin in this region and suggest that a cold climate was a major factor in ice readvance. These data contribute to the understanding of past temperature, ice loading and crustal response, the nature of ice margin retreat, and the paleoenvironment of an understudied area of the Pacific Northwest.

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