Download or read book Chronic Effects of Seismic Energy on Snow Crab Chionoecetes Opilio written by John Robert Christian and published by . This book was released on 2004 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Effect of Seismic Energy on Snow Crab Chionoecetes Opilio written by John Robert Christian and published by [Calgary] : Environmental Studies Research Funds. This book was released on 2004 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt: Concern has been expressed by commercial fishermen that seismic surveys may affect the health and/or behaviour of snow crab. This study examines the effects of seismic survey air gun noise on snow crab & snow crab catches. The study investigated a number of health, behavioural, & reproductive variables before, during, & after seismic shooting in a preliminary attempt to assess potential effects on physical, biochemical, or activity patterns in subject crabs. The study site was Conception Bay, Newfoundland, an area considered to be typical prime crab grounds. Fishing experiments were conducted in a controlled manner using standard & modified crab traps, with seven sets prior to shooting and six afterward. Crab movement & behaviour after exposure to air gun shots was monitored for caged crabs by video camera and for transmitter-tagged crabs by hydrophones. Caged crabs were also exposed to air gun shots at various depths and were sampled to assess potential indicators of stress & physical damage, in comparison to control crabs not exposed to shots. An important component of that study was to determine if lethal effects occurred three months after exposure. Results of this research are presented & discussed and direct effects on crab physiology are summarized.

Download or read book Potential Impacts of Seismic Energy on Snow Crab written by and published by . This book was released on 2004 with total page 6 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report summarizes the results of a study on the potential impacts of seismic energy on snow crab (Chionoecetes opilio). It focusses in particular on whether there was any evidence to indicate the following: irreversible harm to female snow crab; mortality or morbidity in females carrying eggs; long-term effects on behaviour; long-term effects on the characteristics and morphology of gills and internal organs; effects on the hatch of embryos carried by exposed female snow crab and subsequent morphology and locomotion of larvae. The report also identifies areas for further research.

Download or read book Proceedings of a Workshop Held 23 January 2007 at the Gulf Fisheries Center written by M. Boudreau and published by . This book was released on 2009 with total page 31 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Potential Impacts of Seismic Energy on Snow Crab written by and published by . This book was released on 1900 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Potential Impacts of Seismic Energy on Snow Crab written by Michael Chadwick and published by . This book was released on 2004 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of the Peer Review on Potential Impacts of Seismic Energy on Snow Crab written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Potential Impacts of Seismic Energy on Snow Crab written by M. Boudreau and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Potential Impacts of Seismic Energy on Snow Crab written by and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Proceedings of a Workshop Held 23 January 2007 at the Gulf Fisheries Center written by Marcel Boudreau and published by . This book was released on 2009 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Windchill Exposure on the Snow Crab Chionoecetes Opilio written by Jonathan James Warrenchuk and published by . This book was released on 2001 with total page 252 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Millions of snow crabs, 'Chionoecetes opilio, ' are aerially exposed during sorting in the annual Bering Sea commercial fishery. A laboratory experiment measured snow crab responses to windchill exposure. Crabs were exposed to 8 to 16 m/s windspeed and air temperatures from -2 to -10 C̊ for 5 minutes. Mortality, autonomy, and righting response were assessed for seven days post-treatment. Crabs experienced 40% to 100% mortality at windchill from -10 to 16 C̊. Reduced exposure time significantly reduced mortality. Autonomy was variable but pronounced below -10 C̊ windchill. The righting response was impaired after all but the least severe treatment. Estimates of mortality of discarded snow crab in 1998 were calculated from deadloss of retained crab, a windchill model, and a temperature/windspeed model. No relationship existed between catch deadloss and the windchill conditions when the crabs were caught. Mortality of non-retained snow crab was estimated at 3.6% by the windchill model and 19.6% by the temperature /windspeed model"--Leaf 3.

Download or read book Proceedings of a Workshop Held 23 January 2007 at the Gulf Fisheries Center written by M. Boudreau and published by . This book was released on 2009 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Marine invertebrates and sound written by Marta Solé and published by Frontiers Media SA. This book was released on 2023-08-21 with total page 163 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Energy Development on the Outer Continental Shelf and the Future of Our Oceans written by United States. Congress. House. Committee on Natural Resources. Subcommittee on Energy and Mineral Resources and published by . This book was released on 2009 with total page 118 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Effects of Noise on Aquatic Life II written by Arthur N. Popper and published by Springer. This book was released on 2015-11-26 with total page 1243 pages. Available in PDF, EPUB and Kindle. Book excerpt: The meeting of Aquatic Noise 2013 will introduce participants to the most recent research data, regulatory issues and thinking about effects of man-made noise and will foster critical cross-disciplinary discussion between the participants. Emphasis will be on the cross-fertilization of ideas and findings across species and noise sources. As with its predecessor, The Effects of Noise on Aquatic Life: 3rd International Conference will encourage discussion of the impact of underwater sound, its regulation and mitigation of its effects. With over 100 contributions from leading researchers, a wide range of sources of underwater sound will be considered.

Download or read book Proceedings of the Peer Review on Potential Impacts of Seismic Energy on Snow Crab written by and published by . This book was released on 2005 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Les impacts possibles de l'énergie sismique the reproductive biology of snow crab is a sur la capacité de reproduction du crabe des concern of the fishing industry in the neiges constituent un sujet de préoccupation southern Gulf of St. [...] This meeting concluded that there was a lack of Il a été conclu lors de cette réunion que l'on information on the potential impacts of seismic manquait d'information sur les effets possibles des activities on snow crab, specifically: activités de sismique sur le crabe des neiges, plus particulièrement : • Acute mortality of eggs, larvae, juveniles, • le taux aigu de mortalité des oeufs, des larves [...] In recognition of the stated lack of knowledge on Reconnaissant le manque d'information constaté the potential effects of seismic activities on the sur les effets possibles des activités de sismique health of the resident snow crab populations in sur la santé des populations résidantes de crabe Atlantic Canada, the Environmental Studies des neiges du Canada atlantique, le Fonds pour 3 Gulf Region [...] Le temps de cycle des pattes propulsive limbs and maximum body velocities propulsives et la vitesse maximale du corps ont were used as experimental parameters to servi de paramètres expérimentaux pour évlauer assess the swimming capabilities, and infer the les capacités de nage et déduire l'état de santé de health of the animal.

Download or read book Pilot Study on the Effects of Seismic Air Gun Noise on Lobster Homarus Americanus written by J. F. Payne and published by . This book was released on 2007 with total page 48 pages. Available in PDF, EPUB and Kindle. Book excerpt: Lobster is one of the most commercially important species in Atlantic Canada and it is important to have some knowledge on whether seismic surveys may pose a risk to lobster populations. Noted in this regard is the mounting interest with respect to seismic surveys in the relatively shallow waters of the Gulf of St. Lawrence where has extensive and rich lobster grounds. The basic thrust of the studies were to explore for changes in various biological endpoints and identify those which might warrant further assessment in a more comprehensive manner.--Document.