Download or read book Updated Analysis of Genetic Mixing Among Beluga Stocks in the Nunavik Marine Region and Belcher Islands Area written by Arnaud Mosnier and published by . This book was released on 2017 with total page 15 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Updated Analysis of Genetic Mixing Among Nunavik Beluga Summer Stocks to Inform Population Models and Harvest Allocation written by and published by . This book was released on 2016 with total page 51 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Movements of Beluga Tagged at the Nastapoka River written by D. W. Doidge and published by . This book was released on 2000 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Beluga whales (Delphinapterus leucas) occupy Hudson Bay in summer where they are an important source of country-food for the Inuit. Two stocks have been identified; the western stock is estimated to contain at least 23,000 animals, approximately 15 times larger than the eastern stock (Richard et al 1990). The two stocks are genetically distinct (Brown et al 1997). The eastern stock has been designated by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC) as threatened and a quota system has been applied to the Inuit subsistence harvest on the northern Quebec coast. The western stock has no quota since harvest levels are lower than the estimated sustainable yield. Aerial surveys in 1985 (Smith and Hammill 1986) and 1993 (DFO unpublished) indicate the summer distribution of beluga whales extends between the Quebec coast (Nunavik) and Sanikiluaq (Belcher Islands). Also, satellite tags, which transmitted for a short time in 1993, showed one whale, tagged at the Little Whale River on the Quebec coast, frequented areas offshore as far as the Belchers. These data would indicate a common stock between Nunavik and Sanikiluaq. However, genetic analysis indicates whales harvested in Sanikiluaq are more similar genetically to western Hudson beluga than those caught along the eastern Hudson Bay coast, just 100 km distant. The conflicting scientific information (genetic make-up vs distribution data) has led some Nunavik Inuit to question the scientific validity of the existing co-management regime and quota system. The number of satellite tags deployed in 1993 (DFO unpublished data) has not been sufficient to clearly resolve the movements of whales that frequent the Quebec coast. The hunters' association of the Nunavik Inuit (HFTA) requested that the issue of stock identity be resolved. A resolution supporting the satellite tagging project was passed at the HFTA's annual general meeting in 1998. With support from World Wildlife Fund Canada, Fisheries and Oceans and Makivik Corporation, three satellite tags were deployed on belugas at the Nastapoka River in 1999. ... In August, the tagged animals frequented the offshore between the mainland coast and the Belcher Islands, an area indicated to be the summer distribution of belugas previously by aerial surveys. While the single, gray animal ventured to the Belcher Islands, the time spent in that vicinity accounted for a small proportion of the time it was tracked (ca. 8%). The two adults with calves did not venture as far to the west. The sample size of tagged animals is too small to estimate the probability of animals that occupy the Nastapoka being caught at the Belchers. However, analysis of the DNA of belugas harvested at the Belchers indicates that the number having the eastern Hudson Bay haplotype is low. The degree of site-tenacity and estuarine use appears to be variable. Other studies demonstrate that belugas will return to the locality of tagging (Orr et al 1998, DFO unpublished data). However, the three whales tagged by us, did not appear to re-enter Nastapoka Estuary. Radio transmitters are becoming more dependable enabling data to be gathered over a longer period of time. Two tags transmitted long enough to indicate that whales remain in the Hudson Bay Area until early October. The start of a northward migration, presumably to over-wintering grounds in Hudson Strait, was documented for one whale until its transmitter sopped signaling near Puvirnituq in late October. A large quantity of data has been received from these satellite tags. The inshore areas of beluga habitat, such as estuaries, are well documented from traditional knowledge and scientific studies. The data from satellite tagged whales show areas, offshore of the Nastapoka Islands, where the whales have remained for several days. The bathymetry of these locations will be examined in relation to the whales' diving activities to better understand habitat-use of beluga whales in eastern Hudson Bay. This analysis is scheduled for Winter 2000-01. The method of using surgical pins to attach the transmitter to the whale's back remains invasive, but no alternative has yet been found. The number of whales tagged has been kept to a minimum. A thorough review of the dive data will determine if a realistic correction factor to account for submerged whales, not counted during aerial surveys can be estimated, or whether further tagging is needed"--ASTIS [online] database.
Download or read book Spatiotemporal Distribution of Beluga Stocks Delphinapterus Leucas in and Around Hudson Bay Genetic Mixture Analysis Based on MtDNA Haplotypes written by Julie Turgeon and published by . This book was released on 2009 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt: There are still concerns from Nunavik hunters about the stock structure of beluga that are hunted in the coastal waters around northern Quebec. The addition of new samples allows the Hudson Bay stock complex to be re-examined. This report also focuses on estimating the contribution of distinct beluga stocks to the harvest of Nunavik sectors and surrounding communities. It provides a new seasonal and regional picture on these contributions by applying a Genetic Mixture Analysis that includes the three stocks that could contribute to the harvest in Northeastern Hudson Bay, Hudson Strait, and Ungava Bay. It also addresses the status of whales from Sanikiluaq.
Download or read book Updated Genetic Mixture Analysis of Nunavik Beluga Delphinapterus Leucas Harvests written by and published by . This book was released on 2016 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stock Discrimination of Belugas Delphinapterus Leucas Hunted in Eastern Hudson Bay Northern Qu bec Hudson Strait and Sanikiluaq Belcher Islands Using Mitochondrial DNA and 15 Nuclear Microsatellite Loci written by and published by . This book was released on 2001 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report examines the possibility that beluga of eastern Hudson Bay (EHB) were hunted by communities outside the EHB arc. It presents results of molecular genetic studies of tissue samples collected from beluga from the Belcher Islands area, EHB communities, north-west Quebec, and Hudson Strait. Individuals & sample populations were characterized with a mitochondrial DNA d-loop sequence of 324 base pairs which described 32 different halotypes (maternally inherited) and with 15 nuclear microsatellite loci (inherited from both parents).
Download or read book Updated Genetic Mixture Analysis of Nunavik Beluga Delphinapterus Leucas Harvests written by and published by . This book was released on 2016 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Genetic Diversity Population Structure and Phylogeography Among Belugas Delphinapterus Leucas in Canadian Waters written by Lianne Postma and published by . This book was released on 2017 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This thesis examines the genetic diversity, population structure and phylogeography of belugas (Delphinapterus leucas) in Canadian waters that encounter multiple stressors throughout their seasonal distributions. Data were collected from multiple scales, including: samples covering a temporal scale of 25 years; broad geographic comparisons to finer-scale, within-group comparisons; and varying amounts of genetic information from partial mtDNA sequences to whole mitogenome sequences, and multiple nuclear microsatellite loci. At least nine genetically distinct summer aggregations, with an additional distinct winter sample collection of unknown summer distribution, were identified. This information contributed to the identification of Designatable Units (DUs) of belugas for future assessments by the Committee on the Status of Endangered Wildlife in Canada (COSEWIC). Phylogenetic analyses of mtDNA sequences revealed that the most divergent lineages are found at the east, west and southern edges of the Canadian distribution, with the central area characteristic of a contact zone displaying an admixture of lineages marked by incomplete lineage sorting. The geographic distribution of these lineages suggests multiple glacial refugia as sources of ancestral beluga populations that recolonized Canadian Arctic and sub-Arctic waters. Preliminary tests of selection detected the presence of purifying selection on all mtDNA protein-coding genes of belugas. However, no signals of adaptive selection were detected among genetic lineages or geographic groups. Within nearshore summer aggregations of Beaufort Sea belugas, three distinct maternal lineages were identified and patterns of genetic relatedness suggest clusters of related females form in the overall area. However, these clusters of related belugas did not form fine-scale kin structure corresponding to aggregation/harvesting locations. Thus, disturbances and subsistence harvesting in particular areas where belugas are aggregating will not be necessarily putting a discrete genetic unit of the stock at risk. These results provide a better understanding of the diversity and spatial differentiation among and within Canadian beluga stocks, inferences about past responses to climate changes, approaches to investigate fine-scale structure within seasonal aggregations, and new tools to infer adaptive potential of these whales. This information, and studies of beluga fossils plus additional samples across global distributions, will improve conservation and management planning for this culturally important and charismatic species.
Download or read book Sampling Program of the Beluga Harvest in Nunavik 2006 written by D. W. Doidge and published by . This book was released on 2007 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Introduction: The Inuit of northern Quebec continue to depend on many marine species as sources of country food. These species include seals, walrus, beluga whales and fish. A process of co-management of these populations has been initiated, which involves the participation of both scientists and Inuit. Studies are being conducted on beluga to ensure wise management of the stocks. In Nunavik, the harvest of marine species is spread over a wide area, thus it is very expensive for a single scientific investigator to cover the whole region. Inuit hunters have a detailed knowledge of the anatomy and behaviour of the wildlife they harvest. This knowledge has been used to decrease the costs of collecting samples and data. For over a decade now, Inuit hunters have been completing these data forms and sending samples to the Nunavik Research Centre. This integrated approach to obtain samples and collect data has been undertaken in conjunction with the Department of Fisheries and Oceans (DFO), Environment Canada, The Kativik Regional Government and the Nunavik Research Centre (NRC) of Makivik Corporation. Members of the local Hunting, Fishing and Trapping Associations (HFTA) gather samples from beluga and related information, then send them to the NRC. Samples are processed at the Research Centre and those collected for other investigators are forwarded on to them. ... Summary of samples gathered in 2006: Samples were collected from beluga whales to: identify stocks through genetic analysis; determine the age structure of the harvest. ... Methods: Sampling kits: Kits were prepared using Ziplock brand freezer bags. ... Each kit and its contents were identified with a serial number. The kits were sent to all communities in Nunavik prior to the whale-hunting season. A community coordinator was responsible for the distribution and collection of kits. Staff at NRC verified that the kits had arrived in the communities by phone. ... Results and Discussion: Community participation in the sampling program, which has been carried out more than a decade, remains low with some communities which hunted but did not return any kits .... This is likely from dissatisfaction with the reduction in quotas or the regulation that they must travel to a hunting zone far from their community. Thus, in some communities, no or few samples have been provided. The reluctance of some hunters to participate because they disagree with the quota that is in place for beluga is understandable. However, if no information is collected, the quota will be based on existing information and will not likely change. By participating in the project, some communities show their concern for beluga management - the purpose of which is to ensure that there are belugas for the next generation to hunt. In other communities, they see that collaboration with biologists has only brought them a reduction in allowable harvest. Given that the beluga harvest is such a contentious issue, the number of complete kits that were returned (n=57) shows that a sizable number of hunters still are willing to participate in the sampling program. (Au) -- ASTIS [online] bibliography.
Download or read book Distribution of Cook Inlet Beluga Whales Delphinapterus Leucas in Winter written by Donald J. Hansen and published by . This book was released on 1999 with total page 92 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Distribution and Movements of Beluga Whales from the Eastern Chukchi Sea Stock During Summer and Early Autumn written by Robert Suydam and published by CreateSpace. This book was released on 2015-06-26 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report includes data from two efforts to satellite tag beluga whales. The first was conducted by the Alaska Beluga Whale Committee (ABWC) through NOAA grant NA67FX0197, the Alaska Department of Fish and Game (ADF&G), the National Marine Fisheries Service (NMFS), the North Slope Borough (NSB), and the Village of Point Lay. This was the first time belugas in Alaska were instrumented with satellite tags. Ten belugas were tagged in 1998-1999. The second took place in 2000-2002. It was initiated by the ABWC and further supported by Minerals Management Service (MMS) through the Coastal Marine Institute. Other cooperators included NMFS, ADF&G, the NSB, the Village of Point Lay, and Alaska Marine Ecosystems Research.
Download or read book Federal Actions Associated with Management and Recovery of Cook Inlet Beluga Whales written by and published by . This book was released on 2003 with total page 104 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Belugas in the North Atlantic and the Russian Arctic written by Mads-Peter Heide-Jørgensen and published by . This book was released on 2002 with total page 280 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Impacts of a Flexible Total Allowable Take System on Beluga Conservation in the Nunavik Marine Region written by Thomas Doniol-Valcroze and published by . This book was released on 2014 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stock Discrimination of Belugas Delphinapterus Leucas Hunted in Eastern Hudson Bay Northern Qub ec Hudson Strait and Sanikiluaq Belcher Islands Using Mitochondrial DNA and 15 Nuclear Microsatellite Loci written by B. G. E. De March and published by . This book was released on 2001 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Stock Discrimination of Belugas Delphinapterus Leucas Hunted in Eastern Hudson Bay Northen Qu bec Hudson Strait and Sanikiluaq Belcher Islands Using Mitochondrial DNA and 15 Nuclear Microsatellite Loci written by B. G. E. De March and published by . This book was released on 2001 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Beluga Whales written by Anthony R. Martin and published by . This book was released on 2002 with total page 76 pages. Available in PDF, EPUB and Kindle. Book excerpt: Dr Anthony Martin is a biologist and in this book he explores what we know about the beluga or white whale, and relates to the reader what research is currently being carried out on this species.
