Differences in δ 15 N and δ 13 C between embryonic and maternal tissues of the ovoviviparous bluntnose sixgill shark Hexanchus griseus

2020 ◽  
Vol 96 (4) ◽  
pp. 1060-1064
Author(s):  
Geoffrey J. Osgood ◽  
Brian Timmer ◽  
Kieran Cox ◽  
Francis Juanes ◽  
Julia K. Baum
Keyword(s):  
Hexanchus Griseus

Trophic ecology of a large-bodied marine predator, bluntnose sixgill shark Hexanchus griseus, inferred using stable isotope analysis

2020 ◽  
Vol 103 (2) ◽  
pp. 147-162
Author(s):  
Jonathan C. P. Reum ◽  
Gregory D. Williams ◽  
Chris J. Harvey ◽  
Kelly S. Andrews ◽  
Phillip S. Levin
Keyword(s):  
Stable Isotope ◽  
Stable Isotope Analysis ◽  
Trophic Ecology ◽  
Isotope Analysis ◽  
Marine Predator ◽  
Hexanchus Griseus

Biological Aspects of the Sixgill Shark, Hexanchus griseus

Copeia ◽  
1986 ◽  
Vol 1986 (1) ◽  
pp. 131 ◽  
Author(s):  
David A. Ebert
Keyword(s):  
Biological Aspects ◽  
Hexanchus Griseus

scholarly journals Abundance Trends for Hexanchus griseus, Bluntnose Sixgill Shark, and Hydrolagus colliei, Spotted Ratfish, Counted at an Automated Underwater Observation Station in the Strait of Georgia, British Columbia

2008 ◽  
Vol 122 (2) ◽  
pp. 124 ◽  
Author(s):  
Robert Dunbrack
Keyword(s):  
British Columbia ◽  
Relative Abundance ◽  
Time Lapse ◽  
Video Monitoring ◽  
Rocky Reef ◽  
Observation Station ◽  
Strait Of Georgia ◽  
The Past ◽  
Time Period ◽  
Hexanchus Griseus

Recordings from a time lapse video monitoring station on a shallow rocky reef in the Strait of Georgia, British Columbia, revealed a steep and continuous decline in the occurrence of Hexanchus griseus (Bluntnose Sixgill Shark) between 2001 and 2007, with relative abundance in 2006 and 2007 less than 1% of that in 2001. The relative abundance of another chondrichthyan, Hydrolagus colliei (Spotted Ratfish), decreased to 15% of 2004 levels in 2005 and 2006 and remained below 25% in 2007. There is no compelling explanation for these decreases. Over the past 25 years water temperatures have increased in the Strait of Georgia and there have been a number of El Niño warm water events, but diver observations of H. griseus at this site over the same time period give no indication of prior changes in abundance. Neither species is targeted by a fishery, but injuries, possibly related to hooking and entanglement, observed in 28% of individually identified H. griseus suggests this species may be taken locally as bycatch.

scholarly journals LXIV.—Note on Hexanchus griseus

1905 ◽  
Vol 16 (95) ◽  
pp. 571-572 ◽  
Author(s):  
C. Tate Regan
Keyword(s):  
Hexanchus Griseus

Microsatellite loci within sixgill sharks,Hexanchus griseus

2009 ◽  
Vol 9 (3) ◽  
pp. 978-981 ◽  
Author(s):  
SHAWN LARSON ◽  
DEBORAH TINNEMORE ◽  
CHRIS AMEMIYA
Keyword(s):  
Microsatellite Loci ◽  
Hexanchus Griseus

scholarly journals Decrease in Sightings of Sixgill Sharks, Hexanchus griseus, in Elliott Bay, Seattle, WA, United States, a Comparison Between 2003–2005 and 2008–2015

2019 ◽  
Vol 6 ◽  
Author(s):  
Denise Griffing ◽  
Jeff Christiansen ◽  
Joel Hollander ◽  
Tim Carpenter ◽  
Shawn Larson
Keyword(s):  
United States ◽  
Hexanchus Griseus
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