Lento,G.M.,Dalebout,M.L.,Baker,C.S.
Species and individual identification of whale and dolphin products for sale in Japan by mtDNA sequences and nuclear microsatellite profiles Technical Report
no. 399, 1998.
Abstract | BibTeX | Tags: Atlantic, baleen whale, baleen whales, beaked whales, developing, DNA, dolphin, dolphins, fin whale, Japan, Microsatellite, minke whale, mtDNA, North Atlantic, Oman, population, Porpoise, pygmy sperm whale, Southern Hemisphere, sperm whale, stocks, survey, whale, whales, whaling
@techreport{,
title = {Species and individual identification of whale and dolphin products for sale in Japan by mtDNA sequences and nuclear microsatellite profiles },
author = {Lento,G.M.,Dalebout,M.L.,Baker,C.S.},
year = {1998},
date = {1998-01-01},
volume = {SC/50/O8},
number = {399},
pages = {1-12},
abstract = {We report on species and individual identification of whale and dolphin products available on commercial markets of Japan in 1997/98 based on analysis of mitochondria) DNA (mtDNA) sequences and microsatellite variation. The total sample of 74 products included four species of baleen whales, the fin (n=4), sei (n=1), northern minke (n=15) and southern minke (n=39) whales. The remaining 15 samples included dolphins (n = 8; at least four species), Baird's beaked whales (n=5), a porpoise (n=1), and a pygmy sperm whale (n=1), all sold as "kujira" in Japan. It is noted that two new species, the sei whale, and the pygmy sperm whale, appeared for the first time in this series of market surveys. With the inclusion of the sei whale, a total of eight species of baleen whale have been found for sale in post-moratorium surveys of markets in Korea and Japan. Comparison of the sei whale mtDNA to reference sequences from the North Atlantic and Southern Hemisphere suggested that this product originated from the Southern Hemisphere. The last legal hunting of this population was in 1979-80. To investigate the stock origins of northern minke whale products sold in Japan, in 1997-98, the mtDNA haplotypes of these products were compared to those found previously in Korea, 1994-97 (Lento et al. 1998). This comparison revealed that four (33%) of the 12 haplotypes among the Japanese products were identical to those from Korea. This is not consistent with the hypothesis that northern minke whale products sold in Japan originate exclusively from the scientific hunting of a stock that is genetically distinct from the Korean coastal bycatch. Instead, these findings could suggest that whales from both stocks are being hunted illegally or that whale products are being smuggled between the two countries. To further investigate the possibility of smuggling and to estimate the total number of individual whales represented in commercial products, we are developing protocols for DNA profiling using microsatellite loci. Based on preliminary analysis of three loci, the four fin whale products, representing three mtDNA haplotypes, were shown to have originated from four individuals. The 15 northern minke whale products found in 1997-98, representing 12 mtDNA haplotypes, were shown to have originated from a minimum of 14 individuals. One of these products that shared a haplotype with a 1997 product, was also shown to be unique.},
keywords = {Atlantic, baleen whale, baleen whales, beaked whales, developing, DNA, dolphin, dolphins, fin whale, Japan, Microsatellite, minke whale, mtDNA, North Atlantic, Oman, population, Porpoise, pygmy sperm whale, Southern Hemisphere, sperm whale, stocks, survey, whale, whales, whaling},
pubstate = {published},
tppubtype = {techreport}
}
We report on species and individual identification of whale and dolphin products available on commercial markets of Japan in 1997/98 based on analysis of mitochondria) DNA (mtDNA) sequences and microsatellite variation. The total sample of 74 products included four species of baleen whales, the fin (n=4), sei (n=1), northern minke (n=15) and southern minke (n=39) whales. The remaining 15 samples included dolphins (n = 8; at least four species), Baird's beaked whales (n=5), a porpoise (n=1), and a pygmy sperm whale (n=1), all sold as "kujira" in Japan. It is noted that two new species, the sei whale, and the pygmy sperm whale, appeared for the first time in this series of market surveys. With the inclusion of the sei whale, a total of eight species of baleen whale have been found for sale in post-moratorium surveys of markets in Korea and Japan. Comparison of the sei whale mtDNA to reference sequences from the North Atlantic and Southern Hemisphere suggested that this product originated from the Southern Hemisphere. The last legal hunting of this population was in 1979-80. To investigate the stock origins of northern minke whale products sold in Japan, in 1997-98, the mtDNA haplotypes of these products were compared to those found previously in Korea, 1994-97 (Lento et al. 1998). This comparison revealed that four (33%) of the 12 haplotypes among the Japanese products were identical to those from Korea. This is not consistent with the hypothesis that northern minke whale products sold in Japan originate exclusively from the scientific hunting of a stock that is genetically distinct from the Korean coastal bycatch. Instead, these findings could suggest that whales from both stocks are being hunted illegally or that whale products are being smuggled between the two countries. To further investigate the possibility of smuggling and to estimate the total number of individual whales represented in commercial products, we are developing protocols for DNA profiling using microsatellite loci. Based on preliminary analysis of three loci, the four fin whale products, representing three mtDNA haplotypes, were shown to have originated from four individuals. The 15 northern minke whale products found in 1997-98, representing 12 mtDNA haplotypes, were shown to have originated from a minimum of 14 individuals. One of these products that shared a haplotype with a 1997 product, was also shown to be unique.
Salm,R.V.,Jensen,R.A.C.,Papastavrou,V.
Marine fauna of Oman: Cetaceans, turtles, seabirds and shallow water corals Technical Report
no. 469, 1993.
Abstract | BibTeX | Tags: cetacean, cetaceans, coastal zone management, coral, dolphin, dolphins, management, marine, minke whale, minke whales, Oman, seabirds, Strandings, survey, turtles, whale, whales
@techreport{,
title = {Marine fauna of Oman: Cetaceans, turtles, seabirds and shallow water corals},
author = {Salm,R.V.,Jensen,R.A.C.,Papastavrou,V.},
year = {1993},
date = {1993-01-01},
number = {469},
pages = {1-66},
publisher = {IUCN},
abstract = {This is the final compilation report that summarises all the data in the sub-reports on cetaceans and turtles etc. Cetacean stranding an sighting info from the surveys conducted between 1984 and 1992. 210 sightings of live cetaceans were made from the shore, boats and helicopters. Most sightings were of animals within four km of shore. The sightings, which were incidental to other coastal zone management studies do not include any related observer effort. The majority of boat-based searching occurred in the capital area, with remaining boat distributed equally between Musandam and Dhofar. There was less observation from boats along the stretch of central coast, but more time spent driving on beaches.There are also 173 records of beached cetacean material. these include the remains of 25 dolphins butchered by fishermen. The sightings and strandings are summarised in a table including 16 species (including both sei and minke whales). 90% of all beached cetacean remains were found south of Ras al Hadd along the central coast, and was most abundant between 20 and 21 N.},
keywords = {cetacean, cetaceans, coastal zone management, coral, dolphin, dolphins, management, marine, minke whale, minke whales, Oman, seabirds, Strandings, survey, turtles, whale, whales},
pubstate = {published},
tppubtype = {techreport}
}
This is the final compilation report that summarises all the data in the sub-reports on cetaceans and turtles etc. Cetacean stranding an sighting info from the surveys conducted between 1984 and 1992. 210 sightings of live cetaceans were made from the shore, boats and helicopters. Most sightings were of animals within four km of shore. The sightings, which were incidental to other coastal zone management studies do not include any related observer effort. The majority of boat-based searching occurred in the capital area, with remaining boat distributed equally between Musandam and Dhofar. There was less observation from boats along the stretch of central coast, but more time spent driving on beaches.There are also 173 records of beached cetacean material. these include the remains of 25 dolphins butchered by fishermen. The sightings and strandings are summarised in a table including 16 species (including both sei and minke whales). 90% of all beached cetacean remains were found south of Ras al Hadd along the central coast, and was most abundant between 20 and 21 N.
Slijper,E.J.,Van Utrecht,W.L.,Naaktgeboren,C.
Remarks on the distribution and migration of whales Journal Article
In: Bijdragen tot de Dierkunde, vol. 34, no. 475, pp. 4-86, 1964.
Abstract | BibTeX | Tags: Arabian Gulf, Arabian Sea, Atlantic, density, Distribution, fin whale, Gulf of Aden, Humpback Whale, humpback whales, India, Indian Ocean, Maldives, migration, minke whale, minke whales, North Pacific, Oman, Pakistan, productivity, right whale, right whales, Southern Hemisphere, sperm whale, sperm whales, Strandings, whale, whales
@article{,
title = {Remarks on the distribution and migration of whales},
author = {Slijper,E.J.,Van Utrecht,W.L.,Naaktgeboren,C.},
year = {1964},
date = {1964-01-01},
journal = {Bijdragen tot de Dierkunde},
volume = {34},
number = {475},
pages = {4-86},
abstract = {The authors gained the cooperation of the Netherlands Association of Ship Owners and the Royal Netherlands Navy in a project to collect all whale sightings from vessels sailing around the globe between 1954 and 1957. A total of 4500 reports of 11,000 animals were received, with the majority of observations coming from the Atlantic and Indian Oceans. Vessels were given identification guides and all reported observations were scored on the perceived reliability of the identification. All Rorqual whales were grouped together, and a further distinction was made between humpback, sperm, right whales and "little piked whales" (minke whales). Sightings were plotted in 10 degree squares according to number of whales observed per 1000 hours steamed in daylight. Special attention is given to the observations of Captain W.F.J. Morzer Bruins, who the authors describe as a keen naturalist whose observations hold more credibility than those of others. His observations in the Indian Ocean include a high number of sperm whales off the southern coast of Oman and the Gulf of Aden in January-March and April-June, a scattering of stranded blue and fin whales along the W coast of India, and only 2 stranded and 2 live humpback whales (strandings both in India, and live sightings near Yemen/Oman border? and off S tip of India (near Maldives?). The larger number of compiled sightings from vessels are presented by species. Rorqual sightings were plentiful in the Gulf of Aden, Arabian Sea coasts of Oman and Pakistan, and in the Arabian Gulf (but not as plentiful as they were in the area between 30 and 40 degrees S. The author concludes that the majority of the whales observed in the NIO do not belong to the Southern Hemisphere stock, but suggests that they migrate from the North Pacific through the Indonesian Archipelago and the Strait Malaya (despite very few observations here). He briefly considers, but discards as unlikely, the hypothesis of a resident NIO stock.The total number of humpback whale sightings in the IO amounted to 500 (compared to 1618 rorqual sightings and 799 "whale" sightings). The majority of animals were observed in coastal waters, and NIO sightings were generally concentrated in the months of Aug-Nov and Jan-April. some of the highest recorded densities in the NIO are off of Pakistan in the months of March, Aug, Oct, and December, but it is not clear how closely related this is to observer effort. Observations are very few in May, June, July and September, and the authors do not link this to the monsoon -but rather conclude that the whales are not present at that time. Although few calves were observed in the NIO, those that were observed, were all observed in November, January or September (but no indication is given of calf size). The authors conclude that this is evidence that the observed whales do not belong to the S. Hem stock, but are more likely from the N.Pacific, despite the fact that there are "no sightings of humpbacks in the south China Sea or the Indonesian Archipelago that could support this assumption". Sperm whales were observed with regularity throughout the year in the NIO, but in lower densities than Rorquals. A low number of sightings in the NIO during summer months again leads the author to conclude that the animals either migrate South or to the N. Pacific. This species, according to the authors is always associated with areas of high productivity.Minke whales were recorded in low densities in the Gulf of Aden and off the coast of Pakistan, but not in the central or Northern coasts of Oman.},
keywords = {Arabian Gulf, Arabian Sea, Atlantic, density, Distribution, fin whale, Gulf of Aden, Humpback Whale, humpback whales, India, Indian Ocean, Maldives, migration, minke whale, minke whales, North Pacific, Oman, Pakistan, productivity, right whale, right whales, Southern Hemisphere, sperm whale, sperm whales, Strandings, whale, whales},
pubstate = {published},
tppubtype = {article}
}
The authors gained the cooperation of the Netherlands Association of Ship Owners and the Royal Netherlands Navy in a project to collect all whale sightings from vessels sailing around the globe between 1954 and 1957. A total of 4500 reports of 11,000 animals were received, with the majority of observations coming from the Atlantic and Indian Oceans. Vessels were given identification guides and all reported observations were scored on the perceived reliability of the identification. All Rorqual whales were grouped together, and a further distinction was made between humpback, sperm, right whales and "little piked whales" (minke whales). Sightings were plotted in 10 degree squares according to number of whales observed per 1000 hours steamed in daylight. Special attention is given to the observations of Captain W.F.J. Morzer Bruins, who the authors describe as a keen naturalist whose observations hold more credibility than those of others. His observations in the Indian Ocean include a high number of sperm whales off the southern coast of Oman and the Gulf of Aden in January-March and April-June, a scattering of stranded blue and fin whales along the W coast of India, and only 2 stranded and 2 live humpback whales (strandings both in India, and live sightings near Yemen/Oman border? and off S tip of India (near Maldives?). The larger number of compiled sightings from vessels are presented by species. Rorqual sightings were plentiful in the Gulf of Aden, Arabian Sea coasts of Oman and Pakistan, and in the Arabian Gulf (but not as plentiful as they were in the area between 30 and 40 degrees S. The author concludes that the majority of the whales observed in the NIO do not belong to the Southern Hemisphere stock, but suggests that they migrate from the North Pacific through the Indonesian Archipelago and the Strait Malaya (despite very few observations here). He briefly considers, but discards as unlikely, the hypothesis of a resident NIO stock.The total number of humpback whale sightings in the IO amounted to 500 (compared to 1618 rorqual sightings and 799 "whale" sightings). The majority of animals were observed in coastal waters, and NIO sightings were generally concentrated in the months of Aug-Nov and Jan-April. some of the highest recorded densities in the NIO are off of Pakistan in the months of March, Aug, Oct, and December, but it is not clear how closely related this is to observer effort. Observations are very few in May, June, July and September, and the authors do not link this to the monsoon -but rather conclude that the whales are not present at that time. Although few calves were observed in the NIO, those that were observed, were all observed in November, January or September (but no indication is given of calf size). The authors conclude that this is evidence that the observed whales do not belong to the S. Hem stock, but are more likely from the N.Pacific, despite the fact that there are "no sightings of humpbacks in the south China Sea or the Indonesian Archipelago that could support this assumption". Sperm whales were observed with regularity throughout the year in the NIO, but in lower densities than Rorquals. A low number of sightings in the NIO during summer months again leads the author to conclude that the animals either migrate South or to the N. Pacific. This species, according to the authors is always associated with areas of high productivity.Minke whales were recorded in low densities in the Gulf of Aden and off the coast of Pakistan, but not in the central or Northern coasts of Oman.