humpback whale taxonomy

[87][88] A and B calls are often produced in repeated co-occurring sequences and sung only by males, suggesting a reproductive function. Close Encounters With Bajas Gray Whales. It has a slender body with an elongated, tapered head and 44 teeth. These animals rely on their well-developed flippers and tail fin to propel themselves through the water; they swim by moving their fore-flippers and tail fin up and down. Six genera have been identified. Combinations of spiraling and looping have been recorded. From 1891 to 1966, an estimated 1,8002,000 gray whales were caught, with peak catches of between 100 and 200 annually occurring in the 1910s. Females do not appear to approach singers that are alone, but may be drawn to gatherings of singing males, much like a lek mating system. This hunt has been allowed under an "aboriginal/subsistence whaling" exception to the commercial-hunting ban. [10] A non-migratory population in the Arabian sea has been isolated for 70,000 years. [163] Formations of commercial whaling among the Mediterranean basin(s) have been considered to be feasible as well.[55]. An adult has between 262 and 473 baleen plates on each side of the mouth. [133] Finbacks are also relatively abundant along the coast of Peru and Chile (in Chile, most notably off Los Lagos region such as Gulf of Corcovado[134] in Chilo National Park, Punta de Choros[es],[135][136] port of Mejillones,[137][138] and Caleta Zorra. They are mostly hollow in the center, often containing at least one fragile hair that erupts 13cm (0.391.18in) from the skin and is 0.1mm (0.0039in) thick. Gestation takes ~15 months;[9] lactation, 9 months to 2 years. [71], In December 1883, a male humpback swam up the Firth of Tay in Scotland, past what was then the whaling port of Dundee. read more. [11] An individual at the maximum confirmed size of 25.9 m is estimated to weigh around 95 tonnes (104.5 tons),[11] varying from about 76 tonnes (84 tons) to 114 tonnes (125.5 tons) depending on fat condition which varies by about 50% during the year. In addition, the existence of historical calving ground on Taiwan and Penghu Islands (with some fossil records[119] and captures[120]), and any presence in other areas outside of the known ranges off Babuyan Islands in Philippines and coastal Vietnamese waters in Gulf of Tonkin are unknown. Other times they corral the narwhals or belugas before striking. [85] Whales are typically hunted for their meat and blubber by aboriginal groups; they used baleen for baskets or roofing, and made tools and masks out of bones. Toothed whales send out ultrasonic clicks using the melon. [115][116], Blue whales were initially difficult to hunt because of their size and speed. Males typically mate with multiple females every year, but females only mate every two to three years. Clicks are quick broadband burst pulses, used for sonar, although some lower-frequency broadband vocalizations may serve a non-echolocative purpose such as communication; for example, the pulsed calls of belugas. Some recent studies place gray whales as being outside the rorqual clade, but as the closest relatives to the rorquals. The Cuvier's beaked whale, goose-beaked whale, or ziphius (Ziphius cavirostris) is the most widely distributed of all beaked whales in the family Ziphiidae. [176] This may apply to the other species of cetaceans, such as sperm whales. [47][162], Offshore gas and oil development in the Okhotsk Sea within 20km (12mi) of the primary feeding ground off northeast Sakhalin Island is of particular concern. New England and the Mid-Atlantic, including the Chesapeake Bay, have a long and storied history of fishing. Before going on long dives, many whales exhibit a behaviour known as sounding; they stay close to the surface for a series of short, shallow dives while building their oxygen reserves, and then make a sounding dive. It was thought that Sowerby's beaked whale evolved to swim fast in a straight line, and a 30-metre (98ft) tank was not big enough. [143] There have been attempts to keep baleen whales in captivity. Their closest non-cetacean living relatives are the hippopotamuses, from which they and other cetaceans diverged about 54 million years ago. The sperm whale characteristically has a large, squarish head one-third the length of its body; the blowhole is slightly to the left hand side; the skin is usually wrinkled; and it has no teeth on the upper jaw. "Japanese whaling", in, Russian Federation. As of 2016, the population of western Pacific (seas near Korea, Japan, and Kamchatka) gray whales was an estimated 200. Virginia Beach Aquarium's stranding response coordinator, Alexander Costidis, stated the conclusion that the two causes of these unusual mortality events were vessel interactions and entanglements. Global population estimates range from less than 100,000 to roughly 119,000. [162] It was primarily hunted for its blubber, oil, and baleen. [12] The species can reach body masses of 40 metric tons (44 short tons). [3] The northwest Pacific population is also listed as endangered by the U.S. government's National Marine Fisheries Service under the U.S. [164], Currently, the annual quota for the gray whale catch in the region is 140 per year. The dwarf minke occurs in tropical, temperate, and polar waters of the South Atlantic, South Pacific, and Indian Ocean and is currently considered an unnamed subspecies of the common minke whale. The pygmy right whale shares several characteristics with the right whales, with the exception of having a dorsal fin. No global estimate of population exists, There are estimated to be at least 320,000 Fraser's dolphins worldwide, but several large portions of its range have not been surveyed, Estimates of various stocks throughout the North Atlantic give an overall value into the high tens or low hundreds of thousands, Total population unknown but thought to be locally common it is the most common dolphin found around the Falkland Islands, Varying population estimates for areas around California and the North Pacific give a total of up to 400,000, Surveys suggest this is the most common dolphin off of Chilean waters, Local estimates include 7080,000 in the Antarctic, 8,000 in the tropical Pacific (although tropical waters are not the orca's preferred environment, the sheer size of this area 19 million square kilometres means there are thousands of orcas), up to 2,000 off Japan, 1,500 off the cooler northeast Pacific and 1,500 off Norway, Estimates for eastern tropical Pacific are 45,000 and another recent survey estimates population to be 1,200 for the eastern Sulu Sea, no global estimate is known, The total population is unknown. Blue whales are rorquals in the family Balaenopteridae.A 2018 analysis estimates that the Balaenopteridae family diverged from other families in between 10.48 and 4.98 million years ago during the late Miocene. The fin whale (Balaenoptera physalus), also known as finback whale or common rorqual and formerly known as herring whale or razorback whale, is a cetacean belonging to the parvorder of baleen whales. The only modern record among Ryukyu Islands was of a rotten carcass beached on Ishigaki Island in 2005. Very small increases in sightings have been confirmed off Shiretoko Peninsula, Abashiri, Kushiro,[123] Tsushima, and Sado Island. In most areas, humpback whale populations have recovered from historic whaling, particularly in the North Pacific. [77] In the Ligurian-Corsican-Provenal Basin in the Mediterranean Sea they make dives as deep as 470m (1,540ft) to feed on the euphausiid Meganyctiphanes norvegica, while off the island of Lampedusa, between Tunisia and Sicily, they have been observed in mid-winter feeding on surface swarms of the small euphausiid Nyctiphanes couchi. [31] The species has been found in temperate waters, but these occurrences were possibly stray individuals, or associated with warm water events. However, their wintering ground habits in the western North Pacific are still poorly understood and additional research is needed.[105]. More research needs to be conducted to understand this issue.[175]. [8], The false killer whale appears to have a widespread presence in tropical and semitropical oceans. [85] Blue whale songs vary between populations. By then, the global population had been reduced to around 5,000. The gray whale undergoes the longest migration of any mammal. ", "CWA travels to The Petroglyphs of Bangudae", "Bizarre whale treatment for rheumatism revealed", "Whales flee from military sonar leading to mass strandings, research shows", "How the sperm whale can hold its breath for 90 minutes", "Whales Descended From Tiny Deer-like Ancestors", "Thousand gather for whale's funeral in Vietnam", "Whale funeral draws 1000 mourners in Vietnam", https://en.wikipedia.org/w/index.php?title=Whale&oldid=1120020875, Wikipedia articles needing page number citations from April 2021, Short description is different from Wikidata, Wikipedia indefinitely semi-protected pages, Wikipedia indefinitely move-protected pages, Articles with unsourced statements from March 2018, Articles with unsourced statements from November 2018, Articles containing potentially dated statements from 2020, All articles containing potentially dated statements, Wikipedia articles incorporating a citation from the New International Encyclopedia, Creative Commons Attribution-ShareAlike License 3.0, This page was last edited on 4 November 2022, at 17:25. The bowhead whale (Balaena mysticetus) is a species of baleen whale belonging to the family Balaenidae and the only living representative of the genus Balaena.They are the only baleen whale endemic to the Arctic and subarctic waters, and are named after their characteristic massive triangular skull, which they use to break through Arctic ice. Physeterids and Kogiids consist of sperm whales. [63] They squeeze the water out through their baleen plates with pressure from the throat pouch and tongue, and swallow the remaining krill. When the mouth is closed, they squeeze the A year later, the 8,000-kilogram (18,000lb) whale grew too big to keep in captivity and was released; it was the first of two grey whales, the other being another grey whale calf named JJ, to successfully be kept in captivity. Population Status. It was first described in 1846 as a species of porpoise based on a skull, which was revised when the first carcasses were observed in 1861. They feed by turning on their sides and taking in water mixed with sediment, which is then expelled through the baleen, leaving their prey trapped inside. [60][61] These apparently were migrants from the North Pacific population through the Arctic Ocean. [47][172] Meats for sale were also discovered in Japanese markets as well. New England and the Mid-Atlantic, including the Chesapeake Bay, have a long and storied history of fishing. ", "Climate impacts on transocean dispersal and habitat in gray whales from the Pleistocene to 2100", "Ponza, a gray whale sighted for the first time in Italy", "Pre-Whaling Genetic Diversity and Population Ecology in Eastern Pacific Gray Whales: Insights from Ancient DNA and Stable Isotopes", "DNA evidence for historic population size and past ecosystem impacts of gray whales", "Western Pacific Gray Whale, Sakhalin Island 2010", " ", "Satellites witness lowest Arctic ice coverage in history", "Mystery gray whale sighted again off Spain coast", Namibian Dolphin Project: A rare and mysterious visitor in Walvis Bay, "The Reproductive Cycle in Gray Whales Based on Photographic Resightings of Females on the Breeding Grounds from 197782", https://www.marinemammalcenter.org/education/marine-mammal-information/cetaceans/gray-whale.html, "Conjoined gray whale calves discovered in Mexican lagoon could be", "Gray Whale Occurrence and Forage Southeast of Kodiak, Island, Alaska", Benthos and prey studies in feeding grounds of the Okhotsk-Korean population of gray whales, Report of the Independent Scientific review Panel on the Impacts of Sakhalin II Phase 2 on Western Pacific Gray Whales and Related Biodiversity, https://www.bajaecotours.com/gray-whale-migration-map.php, "Gray whale (Eschrichtius robustus) at calving sites in the Gulf of California, Mxico", https://www.oceanicsociety.org/blog/1569/close-encounters-with-bajas-gray-whales, "Demographic distinctness of the Pacific Coast Feeding Group of Gray Whales (, "A Gray Area: On the Matter of Gray Whales in the Western North Pacific", "Nearly extinct western gray whale sighted again in coastal waters off Niigata", "Photographic match of a western gray whale between Sakhalin Island, Russia, and the Pacific Coast of Japan. Toothed whales, in contrast, have conical teeth adapted to catching fish or squid. At 19,200 pounds (8,700kg) and 31 feet (9.4m) when she was released, J.J. was the largest marine mammal ever to be kept in captivity. [62], When feeding, they blow five to seven times in quick succession, but while traveling or resting will blow once every minute or two. The most notable of these observations are listed below: Humans and orcas are the adult gray whale's only predators, although orcas are the more prominent predator. While knowledge of sleep in wild cetaceans is limited, toothed cetaceans in captivity have been recorded to sleep with one side of their brain at a time, so that they may swim, breathe consciously, and avoid both predators and social contact during their period of rest. [22] It has been known to form mixed-species pods with those dolphins, probably due to shared feeding grounds. [139], Among Northern Indian Ocean and Bay of Bengal, such as along Sri Lanka, India, and Malaysia, sightings and older records of fin whales exist. It is in the subfamily Globicephalinae; its closest living relatives are Risso's dolphin, the melon-headed whale (Peponocephala electra), the pygmy killer whale (Feresa attenuata), pilot whales (Globicephala spp. Miscellaneous fish, squid, and octopus played only a very minor part of the diet in two of the five years (3.6 to 4.8%). [195], In addition, the fin whale is covered by the Agreement on the Conservation of Cetaceans in the Black Sea, Mediterranean Sea and Contiguous Atlantic Area (ACCOBAMS) and the Memorandum of Understanding for the Conservation of Cetaceans and Their Habitats in the Pacific Islands Region (Pacific Cetaceans MOU). As of 2022, four subspecies are named, each with distinct physical features and vocalizations. Its maximum dive time is likely 18.5 minutes. However, because blue whales feed low on the food chain, there is a lesser chance for bioaccumulation of organic chemical contaminants. There are two types of cetaceans: baleen and toothed. Hot-spots for mass stranding exist along the coast of the Western Cape in South Africa; the most recent in 30 May 2009 near the village of Kommetjie with 55 individuals. Allometric analysis indicates that mammalian brain size scales at approximately the or exponent of the body mass. They fed on its sinking carcass for about 15 minutes before leaving the area. The flippers are small, rounded and tend to curl up at the ends in adulthood. [9], The false killer whale is in the family Delphinidae (oceanic dolphins). [72] Some researchers have suggested that the whales migrate into Hawaiian waters primarily in the autumn and winter. This is known as "sailing". Results of mark-and-recapture surveys have indicated that some movement occurs across the boundaries of these zones, suggesting that they are not entirely discrete and that some immigration and emigration does occur. Bubble-netting comes in two main forms; upward spirals and double loops. [12] Prior to commercial whaling, populations could have reached 125,000. [112], The total historical North Pacific population was estimated at 42,000 to 45,000 before the start of whaling. [29] It sometimes discards the tail, gills, and stomach of captured fish, and pod members have been known to share food. Their more recent divergence has resulted in the subspecies having a relatively low genetic diversity,[12] and New Zealand blue whales have an even lower genetic diversity. Baleen whales are characterized by having baleen plates for filter feeding and two blowholes. [47] The largest fin whale ever weighed (piecemeal) was a 22.7m (74ft) pregnant female caught by Japanese whalers in the Antarctic in 1948 which weighed 69.5 tonnes (68.4 long tons), not including 6% for loss of fluids during the flensing process. Whales, dolphins and porpoises belong to the "Grumbles" are also low in frequency but last longer and are more often made by groups with one or more adult males. Most species have a dorsal fin. Gray whales feed benthically, by diving to the ocean floor and rolling on to their side, (gray whales, like blue whales seem to favor rolling onto their right side) and suck up prey from the sea floor. The North Atlantic right whales nearly became extinct in the twentieth century, with a population low of 450, and the North Pacific grey whale population is ranked Critically Endangered by the IUCN. [128], There had been congregation areas among Sea of Japan to Yellow Sea such as in East Korea Bay, along eastern coasts of Korean Peninsula, and Ulleungdo. [9], The false killer whale has been known to interact non-aggressively with some dolphins: the common bottlenose dolphin, the Pacific white-sided dolphin (Lagenorhynchus obliquidens), the rough-toothed dolphin (Steno bredanensis), the pilot whales, the melon-headed whale, the pantropical spotted dolphin (Stenella attenuata), the pygmy killer whale, and Risso's dolphin. After 14 months, she was released because she also grew too large to be cared for in the existing facilities. [37] Interbirth periods last two to three years,[74] they average 2.6 years in pygmy blue whales. Humpback whales have been observed defending gray whale calves from orcas. The first unit is a 19.8 to 43.5Hz pulsive call, and is normally 17.9 5.2 seconds long. [74] Male pygmy blue whales average 18.7 meters (61.4ft) at sexual maturity. 2019 Gray Whale Unusual Mortality Event along the West Coast. [29] Other examples include the use of echolocation for hunting in low light conditions which is the same hearing adaptation used by bats and, in the rorqual whales, jaw adaptations, similar to those found in pelicans, that enable engulfment feeding. The second unit is a 55.9 to 72.4Hz FM upsweep that is 13.8 1.1 seconds long. This population ranged at least from Southampton, New York, to Jupiter Island, Florida, the latest from 1675. After the humpbacks create the "nets", the whales swim into them with their mouths gaping and ready to swallow. Acoustic readings from passive-listening hydrophone arrays indicate a southward migration of the North Atlantic fin whale occurs in the autumn from the Labrador-Newfoundland region, south past Bermuda, and into the West Indies. In 2019, NOAA Fisheries listed the Gulf of Mexico Brydes whale as an endangered subspecies under the Endangered Species Act.In 2021, NOAA Fisheries revised the common and scientific name of the listed entity to Rices whale, Balaenoptera ricei, and classification to species to reflect the new scientifically accepted taxonomy and nomenclature [164] Between 1910 and 1989, over 55,000 were caught in the North Atlantic. The International Union for Conservation of Nature has listed blue whales as Endangered as of 2018. On their terminal (last) dive they arch their back high out of the water, but rarely raise their flukes out of the water. The behaviour of Kogiids remains largely unknown, but, due to their small lungs, they are thought to hunt in the photic zone. Ancient whalers used harpoons to spear the bigger animals from boats out at sea. The suggestion is that when humpbacks suffered near-extinction during the whaling era, orcas turned to other prey but are now resuming their former practice. Conservation status codes listed follow the IUCN Red List of Threatened Species (v. 2014.3; data current at 20 January 2015). The pygmy sperm whale was first described by naturalist Henri Marie Ducrotay de Blainville in 1838. [79], Breeding behavior is complex and often involves three or more animals. Marini L., Germana Villetti G., Consiglio C.. Mizroch, S. A., Rice, D. W., Zwiefelhofer, D., Waite, J., and Perryman, W. L. (2009). [82] Most females show biennial reproduction, although annual births have been reported. By 196263, sei whale catches began to increase as fin whales became scarce. (n.d.). By 1934, the western gray whale was near extinction. Right whales are three species of large baleen whales of the genus Eubalaena: the North Atlantic right whale (E. glacialis), the North Pacific right whale (E. japonica) and the Southern right whale (E. australis).They are classified in the family Balaenidae with the bowhead whale.Right whales have rotund bodies with arching rostrums, V-shaped blowholes and dark gray or black skin. Whale ribs loosely articulate with their thoracic vertebrae at the proximal end, but do not form a rigid rib cage. [101] The first documented attack occurred in 1977 off southwestern Baja California, Mexico, but the injured whale escaped after five hours. [55], Blue whales are formally classified as endangered under both the US Endangered Species Act[112] and the IUCN Red List. Panigada S., Donovan G., Druon N.-J., Lauriano G., Pierantonio N., Pirotta E., Zanardelli M., Zerbini A., 2015, Satellite telemetry on Mediterranean fin whales to identify critical habitats and mitigate ship strikes, SC/66a/HIM/14. [117] Species that live in polar habitats are vulnerable to the effects of recent and ongoing climate change, particularly the time when pack ice forms and melts.[118]. [19], John Edward Gray placed it in its own genus in 1865, naming it in honour of physician and zoologist Daniel Frederik Eschricht. It also takes fish off hooks, which sometimes leads to entanglement or swallowing the hook. [16] DNA tests done in Iceland on a blue whale killed in July 2018 by the Icelandic whaling company Hvalur hf, found that the whale was the offspring of a male fin whale and female blue whale;[17] however, the results are pending independent testing and verification of the samples. [29] The subspecies has not been genetically established,[28] and is not recognized by the Society for Marine Mammalogy. [63][65] In Costa Rica, Ballena Marine National Park was established for humpback protection. [9] Scientists look at a blue whale's earwax or ear plug to estimate its age. [79] Range expansions due to recoveries and re-colonization in the future is likely to be happen and the predicted range covers wider than that of today. [129], Modern sightings around the Commander Islands have been annual but not in great numbers, and whales likely to migrate through the areas rather than summering, and possible mixing of western and eastern populations are expected to occur in this waters. Once relentlessly hunted for their products, whales are now protected by international law. [74][78] A male blue whale typically trails a female and will fight off potential rivals. [58][59] In his 1835 history of Nantucket Island, Obed Macy wrote that in the early pre-1672 colony, a whale of the kind called "scragg" entered the harbor and was pursued and killed by the settlers. Similar-sounding phrases are repeated in a series grouped into themes, and multiple themes create a song. The humpback has a distinctive body shape, with long pectoral fins and a knobbly head. Often, a few mothers linger with their young calves well into May. Bloomsbury Publishing, Handbook of Whales, Dolphins and Porpoises, p.80, Koontz, K. (n.d.). During summer, West Indies humpbacks congregate off New England, eastern Canada, and western Greenland, while the Cape Verde population gathers around Iceland and Norway. New Bedford, Massachusetts, is consistently among the highest value ports in the United States, thanks to ( See "Spermaceti organ and melon" below.The sperm whale is also known as the "cachalot", which is thought to derive from the archaic French for [115] Any records of the species had not been confirmed since after 1921 on Kyushu. [32] Mothers typically give birth in mid-winter, usually to a single calf. Right whales are three species of large baleen whales of the genus Eubalaena: the North Atlantic right whale (E. glacialis), the North Pacific right whale (E. japonica) and the Southern right whale (E. australis).They are classified in the family Balaenidae with the bowhead whale.Right whales have rotund bodies with arching rostrums, V-shaped blowholes and dark gray or black skin. The bowhead whale (Balaena mysticetus) is a species of baleen whale belonging to the family Balaenidae and the only living representative of the genus Balaena.They are the only baleen whale endemic to the Arctic and subarctic waters, and are named after their characteristic massive triangular skull, which they use to break through Arctic ice. As of July 2013, the Namibian whale was still being seen regularly. [44][45][77] Little is known about mating behavior, or breeding and birthing areas. [52], Full physical maturity is attained between 25 and 30 years. [26], The 30 July 1986 mass stranding of 114 false killers in Flinders Bay, Western Australia was widely watched as volunteers and the newly created Department of Conservation and Land Management (CALM) saved 96 whales, and founded an informal network for whale strandings. [2][172][173], The IWC has set a quota of 19 fin whales per year for Greenland. [27] A 2019 genetic study concluded that the North Pacific fin whales should be considered a subspecies, suggesting the name B. p. velifera (Scammon 1869). [71][72][63] In the Southern Ocean, baleen whales appear to feed on Antarctic krill of different sizes, which may lessen competition between them. [118] In 1984, the entire population was estimated to be less than 38% of its historic carrying capacity. Despite mysids being a prey of choice, gray whales are opportunistic feeders and can easily switch from feeding planktonically to benthically. [35][36], In the Northern Hemisphere, the average size of adult males and females is about 18.5 and 20 metres (61 and 66ft), respectively, averaging 38.5 and 50.5 tonnes (42.5 and 55.5 tons),[11] while in the Southern Hemisphere, it is 20.5 and 22m (67 and 72ft),[37] weighing 52.5 and 63 tonnes (58 and 69.5 tons). These areas may also have included feeding grounds. Mysticetes include four extant (living) families: Balaenopteridae (the rorquals), Balaenidae (right whales), Cetotheriidae (the pygmy right whale), and Eschrichtiidae (the grey whale). [178] It is roughly estimated that 33% of the gray whales born in a given year might be killed by predation. [7], The term "Great Whales" covers those currently regulated by the International Whaling Commission:[8] the Odontoceti family Physeteridae (sperm whales); and the Mysticeti families Balaenidae (right and bowhead whales), Eschrichtiidae (grey whales), and some of the Balaenopteridae (Minke, Bryde's, Sei, Blue and Fin; not Eden's and Omura's whales).[9]. Further north, the northern krill and various species of Euphausia and Thysanoessa are consumed. [54] In a female pygmy blue whale, one corpus albicans is formed on average every 2.6 years. Also, pygmy right whales' heads are no more than one-fourth the size of their bodies, whereas the right whales' heads are about one-third the size of their bodies. Spout shapes differ among species, which facilitates identification. [141] A similar program was used by the Russian Navy during the Cold War, in which belugas were also trained for antimining operations in the Arctic. This is an efficient method of hunting, in which the whale has no major competitors. [6] Owen compared the skull to those of the long-finned pilot whale (Globicephala melas), beluga whale (Delphinapterus leucas), and Risso's dolphin (Grampus griseus)in fact, he gave it the nickname "thick toothed grampus" in light of this and assigned the animal to the genus Phocaena (a genus of porpoises) which Risso's dolphin was also assigned to in 1846. Whale watching in Baja's lagoons is particularly popular because the whales often come close enough to boats for tourists to pet them.[101]. [23][24] Although identity between the Atlantic and Pacific populations cannot be proven by anatomical data, its skeleton is distinctive and easy to distinguish from that of all other living whales. However, the genetic distinction is less with the Eastern North Pacific blue whale and there may be gene flow between hemispheres. The whales then open their mouth and take in enormous quantities of water. New Bedford, Massachusetts, is consistently among the highest value ports in the United States, thanks to [159], An emaciated 13m (43ft) female fin whale, which stranded along the Belgian coast in 1997, was found to be infected with lesions of Morbillivirus. [123] DNA studies indicated that this individual might have originated from the eastern population rather than the western. [166] Migrations of the species into Japanese EEZ and in East China Sea were likely to be exterminated relatively earlier, as the last catch records on Amami shima was between the 1910s and 1930s. Retrieved February 21, 2020, from, Kato, H., Ishikawa, H., Bando, T., Mogoe, T. and Moronuki, H. (2006). [41][42], Since 2005, there have been seven mass strandings of false killer whales in New Zealand involving more than one individual, the largest on 8 April 1943 on the Mhia Peninsula with 300 stranded, and 31 March 1978 in Manukau Harbour with 253 stranded.

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