Bryde's whale

Bryde's whales
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Artiodactyla
Suborder: Whippomorpha
Infraorder: Cetacea
Parvorder: Mysticeti
Superfamily: Balaenopteroidea
Family: Balaenopteridae
Subfamily: Balaenopterinae
Genus: Balaenoptera
Species: B. brydei
B. edeni
Binomial name
Balaenoptera brydei
Olsen, 1913
Bryde's whale range
Balaenoptera edeni
Anderson, 1879

Bryde's whale or the Bryde's whale complex (/ˈbruːdə/ BROO-də) putatively comprises two species of rorqual and maybe three. The "complex" means the number and classification remains unclear because of a lack of definitive information and research. The common Bryde's whale (Balaenoptera brydei, Olsen, 1913) is a larger form that occurs worldwide in warm temperate and tropical waters, and the Sittang or Eden's whale (B. edeni, Anderson, 1879) is a smaller form that may be restricted to the Indo-Pacific.[2] Also, a smaller, coastal form of B. brydei is found off southern Africa, and perhaps another form in the Indo-Pacific differs in skull morphology, tentatively referred to as the Indo-Pacific Bryde's whale. The recently described Omura's whale (B. omurai, Wada et al. 2003), was formerly considered a "pygmy" form of Bryde's, but is now recognized as a distinct species.

B. brydei gets its specific and common name from Johan Bryde, Norwegian consul to South Africa, who helped establish the first modern whaling station in the country, while B. edeni gets its specific and common names from Sir Ashley Eden, former High Commissioner of Burma (Myanmar). Sittang whale refers to the type locality of the species. In Thailand, locals distinguished Sittang whales different from B.edeni,[3] and it is unclear whether Sittang whales were applied for later classified Omura's whales by locals.

Etymology

In Japan, early whalers called it "anchovy" (鰯, iwashi) or "skipjack whale" (鰹鯨, katsuo-kujira). It preys on the anchovy and it was commonly associated with the skipjack. As modern whaling shifted to the Sanriku area, whalemen confused the sei whale with it; now iwashi-kujira (鰯鯨, "anchovy whale") only applies to the latter. Incidentally, anchovies are dominant prey for both species off Japan. They are now called nitari-kujira (似鯨, "look-alike whale"), for their resemblance to the sei whale.[4]

Taxonomy

Baleen plate of Bryde's whale

The taxonomy is poorly characterised. The two genetically distinct, candidate species/subspecies/morphologies are Bryde's whale B. brydei and the Sittang or Eden's whale B. edeni,[5] that differentiate by geographic distribution, inshore/offshore preferences, and size. For both putative species, the scientific name B. edeni is commonly used or they are simply referred to B. cf brydei/edeni.[6]

In 1878, the Scottish zoologist John Anderson, first curator of the Indian Museum in Calcutta, described Balaenoptera edeni, naming it after the former British High Commissioner in Burma, Sir Ashley Eden, who helped obtain the type specimen. Eden's Deputy Commissioner, Major A.G. Duff, sent a Mr Duke, one of his assistants, to Thaybyoo Creek, between the Sittang and Beeling Rivers, on the Gulf of Martaban, where he found a 37-ft whale, which had stranded there in June 1871 after swimming more than 20 miles up the creek — it was said to have "exhausted itself by its furious struggles" to get free and "roared like an elephant" before finally expiring. Despite terrible weather, he was able to secure almost the entire skull and nearly all its vertebrae, along with other bones. These were sent to Anderson, who described the specimen, which was physically mature, as a new species.[7] In 1913, the Norwegian scientist Ørjan Olsen, based on the examination of a dozen "sei whales" brought to the whaling stations at Durban and Saldanha, in South Africa, described Balaenoptera brydei, naming it after the Norwegian consul to South Africa Johan Bryde.[8] In 1950, the Dutch scientist G.C.A. Junge, after comparing specimens of B. edeni and B. brydei with a 39-ft, physically mature specimen that had stranded on Pulau Sugi, an island between Singapore and Sumatra, in July 1936, synonymized the two species into B. edeni.[7][9]

In the 1950s it was discovered that there were two types of "sei whale" off Japan, a northern form with longer, finer baleen and shorter ventral grooves and a southern form with shorter, coarser baleen and longer ventral grooves. They also differed in the shape of the palate. The former was caught off northeastern Honshu and eastern Hokkaido, while the latter was taken off western Kyushu and southern Honshu. Both were caught off the Bonin Islands, but at different seasons. It was realized that the northern form were indeed sei whales (B. borealis), but the southern form were Bryde's whale (B. brydei/edeni).[10] A later study revealed that Bryde's caught off Japan exhibited lateral ridges on their rostrum, whereas sei whales lacked this feature.[11]

In the 1960s it was discovered that some of the "sei whales" being caught off Brazil were also Bryde's whales based on the same characters that distinguished the two species off Japan (i.e. three ridges on the rostrum versus one, shape of the palate, texture of the baleen, length of the ventral grooves).[12]

Description

Several differences in anatomy are seen between Bryde's and Eden's whales; morphological similarities have caused confusions regarding species identification.[13]

Size

Size compared to an average human

Members of the Bryde's whale complex are moderately sized rorquals, falling behind sei whales, but being larger than Omura's whale and the relatively small minke whales. The largest measured by Olsen (1913) was a 14.95 m (49.0 ft) female caught off Durban in November 1912,[8] while the longest of each sex measured by Best (1977) at the Donkergat whaling station in Saldanha Bay, South Africa, were a 15.51 m (50.9 ft) female caught in October 1962 and a 14.56 m (47.8 ft) male caught in April 1963; both were the offshore form.[14] At physical maturity, the coastal form off South Africa averages 13.1 m (43 ft) for males and 13.7 m (45 ft) for females, while the South Africa offshore form averages 13.7 and 14.4 m (45 and 47 ft). The coastal form near Japan is slightly smaller, with adult males averaging 12.9 m (42 ft) and adult females 13.3 m (44 ft). At sexual maturity, males average 11.9 m (39 ft) and females 12 m (39 ft) near Japan. Sexual maturity is reached at 8–11 years for both sexes in the offshore form off South Africa. At birth, they are 3.95–4.15 m (13.0–13.6 ft).[15] The body mass of Bryde's whales can range 12–25 metric tons (13–28 short tons).

External appearance

B. cf. brydei, showing faint lateral ridges

Bryde's whale is a baleen whale, more specifically a rorqual belonging to the same group as blue whales and humpback whales. It has twin blowholes with a low splashguard to the front. Like other rorquals, it has no teeth, but has two rows of baleen plates.

Bryde's whales closely resemble their close relative the sei whale. They are remarkably elongated (even more so than fin whales), with the greatest height of the body being one-seventh their total length – compared to 1/6.5 to 1/6.75 in fin whales and only 1/5.5 in sei whales. Bryde's are dark smoky grey dorsally and usually white ventrally, whereas sei whales are often a galvanized blue-grey dorsally and have a variably sized white patch on the throat, a posteriorly oriented white anchor-shaped marking between the pectoral fins, and are blue-grey beyond the anus – although Bryde's off South Africa can have a similar irregular white patch on the throat. Bryde's have a straight rostrum with three longitudinal ridges that extend from the blowholes, where the auxiliary ridges begin as depressions, to the tip of the rostrum. The sei whale, like other rorquals, has a single median ridge, as well as a slightly arched rostrum, which is accentuated at the tip. Bryde's usually have dark grey lower jaws, whereas sei whales are lighter grey. Bryde's have 250–370 pairs of short, slate grey baleen plates with long, coarse, lighter grey or white bristles that are 40 cm (16 in) long by 20 cm (7.9 in) wide, while sei whales have longer, black or dark grey baleen plates with short, curling, wool-like bristles.[8]

The 40 to 70 ventral pleats extend to or past the umbilicus, occupying about 58% and 57% of the total length, respectively; sei whales, though, have ventral pleats that extend only halfway between the pectoral fins and umbilicus, occupying only 45-47% of the total body length, whereas their umbilicus is usually 52% of the total body length. Both species are often covered with white or pink oval scars caused by bites from cookie-cutter sharks.[16]

Bryde's whales have an upright, falcate dorsal fin that is up to 46.25 cm (18.21 in) in height, averages 34.4 cm (13.5 in), and is usually between 30 and 37.5 cm (11.8 and 14.8 in).[14] It is often frayed or ragged along its rear margin and located about two-thirds of the way along the back. The broad, centrally notched tail flukes rarely break the surface. The flippers are small and slender.[6]

Behaviour

B. cf. brydei off La Gomera, showing its culumnar blow
B. cf. brydei breaches, showing gray upper half of lower jaw

Their blow is columnar or bushy, about 3.0–4.0 m (10–13 ft) high. Sometimes, they blow or exhale while under water. Bryde's whales display seemingly erratic behaviour compared to other baleens, because they surface at irregular intervals and can change directions for unknown reasons.[6]

They usually appear individually or in pairs, and occasionally in loose aggregations up to 20 animals around feeding areas.[6] They are more active on the water surface than sei whales, especially in coastal waters.

Breathing

They regularly dive for about 5–15 minutes (maximum of 20 minutes) after four to seven blows. Bryde's whales are capable of reaching depths down to 1,000 ft (300 m). When submerging, these whales do not display their flukes. Bryde's whales commonly swim at 1.6–6.4 km/h (1–4 mph), but can reach 19–24 km/h (12–15 mph).[6] They sometimes generate short (0.4 seconds) powerful, low frequency vocalizations that resemble a human moan.[6]

Diet

Bryde's whales feed on a wide variety of fish, planktonic crustaceans, and cephalopods. In the western North Pacific, Bryde's whales caught by Japanese scientific whaling vessels (2000–2007) mainly fed on Japanese anchovy (Engraulis japonicus, 52%) and various species of euphausiid (36%, including Euphausia similis, E. gibboides, Thysanoessa gregaria, and Nematoscelis difficilis), as well as oceanic lightfish (Vinciguerria nimbaria, nearly 3%), and mackerels (Scomber spp., less than 2%). The prey differed by location and season. In coastal areas, euphausiids dominated the diet, comprising 89 and 75% of the diet in May and June, respectively. Further offshore, Japanese anchovy was the dominant species, accounting for nearly 100% of the diet in late summer.[17] Based on the stomach contents of Bryde's whales caught by Japanese pelagic whaling expeditions in the North Pacific in the 1970s, the majority where found to feed on euphausiids (nearly 89%), whereas only about 11% fed on fish.[18]

A B. brydei in False Bay, South Africa, showing upright dorsal fin, which is often nicked or frayed on its trailing edge (shown here)
Eden's whale feeding in Gulf of Thailand.

Off South Africa, prey preferences differed between the inshore and offshore forms. The former mainly feed on anchovies (Engraulis capensis, 83%), maasbankers (Trachurus trachurus, 36%), and pilchards (Sardinops ocellata, 33%), with only one (or 3%) being found with euphausiids (Nyctiphanes capensis). The latter, however, mainly feed on euphausiids (primarily Euphausia lucens, but also E. recurva, N. capensis, and Thysanoessa gregaria), as well as various deep-sea fish (including Mueller's pearlside, Maurolicus muelleri, and a species of Lestidium). One was even found "full of baby squid" (later identified as Lycoteuthis diadema).[14]

In the Gulf of California, they mainly feed on Pacific sardine (Sardinops sagax) and thread herring (Opisthonema libertate) (about 88%), but also feed on euphausiids (mostly Nyctiphanes simplex, 11%). They have also been observed feeding on pelagic red crabs (Pleuroncodes planipes) off southern Baja California.[19] In the Coral Sea, the South Pacific, and the Indian Ocean, they appear to mainly feed on euphausiids, while off Brazil, they have been observed feeding on sardines. Individuals caught off Western Australia were found with anchovies (E. australis) in their stomachs (though these individuals may refer to Omura's whale).[20] Bryde's whales use several feeding methods, including skimming the surface, lunging, and bubble nets especially within Gulf of Tosa.[6][21][22]

Along southeastern coasts of Brazil, whales add twisting movements to lunge feeding.[23]

In the Pacific and northern Indian Ocean, Bryde's whales have been observed employing "tread-water feeding" or "trap feeding",[24] a behaviour more commonly known from the northern Gulf of Thailand which is also performed by humpback whales in the northeastern Pacific.[25][26]

Reproduction and nurturing

Bryde's whales breed in alternate years, apparently in any season, with an autumnal peak. Their gestation period is estimated at 12 months. Calves are about 3.4–4.0 m (11–13 ft) long at birth and weigh 1,000 kg (2,200 lb). They become sexually mature at 8–13 years of age, when females are 12 m (39 ft). The mother nurses for 6–12 months.[6]

Distribution

B. brydei

B. cf. brydei whale swimming off Madeira
A Bryde's Whale in the Hauraki Gulf Marine Park.

B. brydei occurs in the Atlantic, Pacific, and Indian Oceans between the 40th parallels of latitude, preferring highly productive, tropical, subtropical, and warm, temperate waters of 16–22 °C (61–72 °F). In the North Pacific, they occur as far north as Honshu to the west and southern California in the east, with vagrants reported as far north as Washington in the United States. A resident population is found in the Gulf of California and they occur throughout the eastern tropical Pacific, including Peru and Ecuador,[27] where they are absent from July to September. They have also been reported in an upwelling area off Chile between 35° and 37°S. In the southwestern Pacific, they occur as far south as the North Island of New Zealand.

Based on osteological features, a specimen from Taiwan was referred to B. brydei, while several specimens from the Philippines and Indonesia differed slightly in skull morphology and were referred to the putative Indo-Pacific Bryde's whale.[1][28][29] Mitochondrial DNA analysis showed that Bryde's whales caught in the pelagic western North Pacific and Bonin Islands (resident population), as well as biopsy samples taken from whales off Hawaii, the west coast of Baja California, and the southern Gulf of California, belonged to B. brydei.[30] Resident or semi-resident groups also exist off Hawaiian[31] and Northwestern Hawaiian Islands,[32] and Northern Mariana Islands.[33] Bryde's whales do not occur within central to northern Sea of Japan on regular basis or at least in large numbers. One of the northernmost records in modern times was of a beached, 5-m-long specimen at Nakhodka in 2011.[34]

B. brydei occurs throughout the Indian Ocean north of about 35°S. Those of the southern Indian Ocean appear to correspond to B. brydei, as do the individuals illegally caught by the Soviets in the 1960s in the northwest Indian Ocean, as well as the Maldives. Individuals sighted in the Red Sea may or may not be B. brydei.[1][35] Bryde's whales are considered to be more common in Red Sea than previously thought,[36] and possibly a local resident group exists within the sea.[36] Whales still migrate through coastal areas nearby such as in Gulf of Aden,[37][38] Gulf of Aquaba,[36] and in Persian Gulf[39] through the Strait of Hormuz.[40]

In the North Atlantic, they have been recorded as far north as Cape Hatteras. They occur in the Gulf of Mexico and throughout the wider Caribbean – two specimens from Aruba were found through mtDNA analysis to be firmly placed within B. brydei and to form a clade with a specimen from Madeira and individuals of the offshore form of South Africa. They were first recorded in the Azores in 2004 and showing mixed traits of offshore and inshore forms,[41] but do not occur in the Mediterranean Sea (regarding the bones of a baleen whale found, Bryde's whale was listed as one of suggested species[42]). They appear to occur off Brazil year-round, such as around Rio de Janeiro – Cape Frio,[43] Armação dos Búzios, entrance to Guanabara Bay,[44][45][46][47] Ilha Anchieta State Park, Ilha Grande, and so on. Individuals of the inshore form off South Africa are also resident year-round, occurring mainly between Cape Recife and Saldanha Bay, whereas the larger offshore form migrates to West African equatorial waters in the winter.[1][41][48] Regular occurrences have been noted around Cape Verde as well.[49]

Distribution of the group in Gulf of Mexico has been restricted in a very small area unlike the original range occupying throughout the gulf, and the total abundance is estimated to be from 33 to 44 or around 100 individuals.[50]

There are unusually large aggressions of Bryde's whales inhabit between Curacao and Venezuela.[51]

B. edeni

Underwater view of a B. brydei/edeni off Phi Phi Islands, Thailand

The type specimen is from the Gulf of Martaban coast of Myanmar, while other referred specimens were found on the Bay of Bengal coast of Myanmar, Bangladesh, India, Thailand to Vietnam, Taiwan and continental China. A population found off southern and southwestern Japan in the East China Sea has also been referred to B. edeni. A whale stranded in Hong Kong and another saved from a river in eastern Australia were found to be closely related to the Junge specimen and the East China Sea whales. Bryde's whale (most had auxiliary ridges) of small size – estimated at 10.1 to 11.6 m (33 to 38 ft) in length – sighted off the northeastern side of the Solomon Islands during a survey in late November and early December 1993 may be referable to B. edeni. Four of the whales, estimated at 11.3 to 11.6 m (37 to 38 ft) in length, were accompanied by calves that ranged from 6.0 to 6.7 m (19.7 to 22.0 ft) in length.[52] It is unknown whether eight small individuals – reaching only 11.2 to 11.7 m (37 to 38 ft) at maturity – caught off western and eastern Australia between 1958 and 1963 are specimens of B. edeni or B. omurai.[1][28][53] Along Chinese coasts, for example, whales were once thought to be abundant along southern coasts from Fujian and Guangdong Provinces to Hainan Island and the north eastern tip of the Gulf of Tonkin[54][55][56][57][58] such as off Tieshangang District[59] and around Weizhou and Xieyang Islands.[60][61] For further information on whales in Chinese waters, see Wildlife of China. B. edeni is also considered to be the most common baleen whales in Vietnamese waters.[62] Resident local groups have been found rather cosmopolitan among southeast to east Asian waters such as at Gulf of Thailand, Sundarbans National Park, Thandwe and Mergui Archipelago,[63] Kasasa, Kagoshima and Koshikijima Islands, Gulf of Tosa. In Bohol Sea and nearby Sulu Sea,[64] the first documented reappearance was in 2010[65][66] although there have been previous sightings in the region such as off Pamilacan Island in 2004.[67] Nationally endangered, resident population occur on east coasts of North Island, New Zealand including Bay of Islands, Hauraki Gulf, and Bay of Plenty.

Population

Bryde's whale breaching in Castelhanos Bay, Ilhabela in Sao Paulo
Bryde's whale in the Gulf of Thailand

The population may include up to 90,000–100,000 animals worldwide, with two-thirds inhabiting the Northern Hemisphere.

For management purposes, the U.S. population is divided into three groups: the Eastern Tropical Pacific stock (11,000–13,000 animals) and the Hawaiian stock (350–500). As of 2016, the Bryde's whale is considered to be critically endangered in New Zealand as there are approximately 200 left in the wild.[68]

Prior to 2006, only two confirmed sightings of Bryde's whale had been reported in the eastern North Pacific north of Baja California—one in January 1963, only a kilometer off La Jolla (originally misidentified as a fin whale), and another in October 1991 west of Monterey Bay. Between August 2006 and September 2010, six sightings were made by scientists in the Southern California Bight. Five were west of San Clemente Island, and one between San Clemente Island and Santa Catalina Island. All but one involved single individuals.[69] Another sighting was made off Dana Point, California, on 19 September 2009, which was originally misidentified as a fin whale.

More recently, a rare sighting of an adult Bryde's whale and its young calf was seen feeding off of the coast of Auckland, New Zealand by a team of researchers from the Auckland University of Technology.[68]

In general, data are insufficient to determine population trends.

Conservation

Bryde's whale surfaces off Northwestern Hawaiian Islands.

Bryde's whale is listed as Data Deficient by the International Union for the Conservation of Nature and Natural Resources. It is also listed in Convention on International Trade in Endangered Species of Wild Fauna and Flora (CITES) Appendix I, which prohibits international trade.

Bryde's whale is listed on Appendix II [70] of the Convention on the Conservation of Migratory Species of Wild Animals. It is listed on Appendix II [70] as it has an unfavourable conservation status or would benefit significantly from international co-operation organised by tailored agreements.

In addition, Bryde's whale is covered by the Memorandum of Understanding for the Conservation of Cetaceans and Their Habitats in the Pacific Islands Region (Pacific Cetaceans MOU).[71]

Whaling

Historically, this species was not significantly targeted by commercial whalers, but became more important in the 1970s as the industry depleted other targets. The Japanese hunt this species as part of their scientific whaling program. Artisanal whalers have taken them off the coasts of Indonesia and the Philippines.

Modern whaling for Bryde's whales is thought to have begun from coastal stations in Japan in 1906, where it continued uninterrupted until 1987—they were also caught offshore in the western North Pacific by both Japanese (1971–79) and Soviet (1966–79) fleets, as well as from Taiwan (1976–80), the Bonin Islands (1946–52 and 1981–87), and the Philippines (1983–85). In 1997, an estimated over 20,000 Bryde's whales had been caught in the western North Pacific between 1911 and 1987 (the Japanese were later found to have falsified their reported take from the Bonin Islands between 1981–87, reporting a catch of only 2,659 instead of the true take of 4,162). A population assessment done in the mid-1990s stated that the population in the western North Pacific may have declined by as much as 49% during 1911–96. Norwegian factory ships off Baja California took an additional 34 Bryde's whales between 1924–29;[72] two were also caught off central California in 1966.[73]

An estimated 5,542 Bryde's whales were caught off Peru between 1968 and 1983, including a reported catch of 3,589 between 1973 and 1983. An unknown number were also caught off Chile from 1932–79. Over 2,000 were caught off Cape Province, South Africa, from 1911–67, most (1,300) during 1947–67. The majority of the 2,536 sei whales caught by the pirate whaler Sierra in the South Atlantic between 1969 and 1976 are believed to have been Bryde's whales. At least some Bryde's whales were among the 5,000 sei whales recorded in the catch off Brazil from 1948–77, but possibly only 8%.[1]

Over 30,000 Bryde's whales were caught between 1911 and '87, including over 1,400 taken by the Soviets in the Southern Hemisphere from 1948–73 (only 19 were reported).[74] The peak reported catches were reached in 1973–74 and 1974–75, when over 1,800 were taken each year. In 2000, the Japanese began implementing a scientific research programme involving an annual catch of 50 Bryde's whales in the western North Pacific. Nearly 500 have been caught since the program began (as of 2009).[75]

Other threats

Bryde's whale is listed as National Critical in New Zealand

Bryde's whales have not been reported as taken or injured in fishing operations. They are also sometimes killed or injured by ship strikes. Anthropogenic noise is an increasing concern for all rorquals, which communicate by low-frequency sounds.[6]

These whales are protected off the USA by the Marine Mammal Protection Act of 1972.[6]

A Bryde's whale washed ashore on the 28 January 2016 at Juhu beach in Mumbai, India. Such incidents are considered rare.[76][77]

See also

References

  1. 1 2 3 4 5 6 Reilly, S.B.; Bannister, J.L.; Best, P.B.; Brown, M.; Brownell Jr., R.L.; Butterworth, D.S.; Clapham, P.J.; Cooke, J.; Donovan, G.P.; Urbán, J.; et al. (2008). "Balaenoptera_brydei". IUCN Red List of Threatened Species. Version 2011.1. International Union for Conservation of Nature. Retrieved 5 August 2011.
  2. ↑ "Bryde's Whales, Balaenoptera edeni". The MarineBio.org. Retrieved 2015-02-03.
  3. ↑ http://www.pmbc.go.th/web/webpmbc/public%20files/swpphuket/swpphuket43.pdf%5Bpermanent+dead+link%5D
  4. ↑ Omura, Hidero. (1977). "Review of the Occurrence of the Bryde's Whale in the Northwest Pacific". Reports of the International Whaling Commission (Special Issue 1):88-91.
  5. ↑ Olsen, 1913
  6. 1 2 3 4 5 6 7 8 9 10 "Bryde's Whale (Balaenoptera edeni)". Retrieved December 2009. Check date values in: |accessdate= (help)
  7. 1 2 Anderson, J. (1878). Anatomical and Zoological Researches: Comprising an Account of the Zoological Results of the Two Expeditions to Western Yunnan in 1868 and 1875; and a Monograph of the Two Cetacean Genera, Platanista and Orcaella. Quaritch London.
  8. 1 2 3 Olsen, Ørjan (1913). "On the External Characters and Biology of Bryde's Whale (Balaenoptera brydei), a new Rorqual from the Coast of South Africa". Proc. Zool. Soc. Lond.: 1073–1090.
  9. ↑ Junge, G.C.A. (1950). "On a Specimen of the Rare Fin Whale, Balaenoptera edeni Anderson, stranded on Pulu Sugi near Singapore". Zool. Verhandl. 9: 3–26.
  10. ↑ Omura, H. and K. Fujino. (1954). "Sei whales in the adjacent waters of Japan II. Further studies on the external characters". Sci. Rep. Whales Res. Inst., 9: 89-103.
  11. ↑ Omura, H. (1962). "Further information on Bryde's whale from the coast of Japan". Sci. Rep. Whales Res. Inst., 16: 7-18.
  12. ↑ Omura, H. (1962). "Bryde's whale occurs on the coast of Brazil". Sci. Rep. Whales Res. Inst., 16: 1-5.
  13. ↑ SLAM - Sri Lanka's Amazing Maritime. New Great Whale: Eden’s Whale in Sri Lankan Waters?. Retrieved on August 03, 2017
  14. 1 2 3 Best, Peter B. (1977). "Two Allopatric Forms of Bryde's Whale off South Africa". Rep. Int. Whal. Commn. Special Issue 1:10-38.
  15. ↑ Evans, Peter G. H. (1987). The Natural History of Whales and Dolphins. Facts on File.
  16. ↑ Omura, H. (1966). "Bryde's whales in the Northwest Pacific". In Whales, Dolphins, and Porpoises (ed. K.S. Norris): 70-8. Univ. Calif. Press, Berkeley and Los Angeles.
  17. ↑ Tamura, T., Konishi, K., Isoda, T. and P. Okamoto. (2009). "Prey consumption and feeding habits of common minke, sei and Bryde's whales in the western North Pacific". NAMMCO/SC/16/MMFI/07
  18. ↑ Nemoto, T.; A. Kawamura (1977). "Characteristics of food habits and distribution of baleen whales with special reference to the abundance of North Pacific sei and Bryde's whales". Rep. Int. Whal. Commn. Spec. Iss. 1: 80–87.
  19. ↑ Rice, D.W. (1977). "Synopsis of biological data on the sei whale and Bryde's whale in the eastern North Pacific". Rep. Int. Whal. Commn. Spec. Iss. 1: 92–97.
  20. ↑ Reynolds, John Elliott, and Sentiel A. Rommel. (1999). Biology of Marine Mammals. Washington: Smithsonian Institution Press.
  21. ↑ 西部北太平洋、特に南西部日本沿岸におけるニタリクジラの資源生態学的研究 木白 俊哉. 2011
  22. ↑ "ニタリクジラ". www24.big.or.jp.
  23. ↑ Mello Neto D. T.. Sá Maciel D. I.. Tardin H.R.. Simão M. S.. 2017. Twisting Movements During Feeding Behavior by a Bryde’s Whale (Balaenoptera edeni) Off the Coast of Southeastern Brazil (pdf). pp501-506. DOI: https://doi.org/10.1578/AM.43.5.2017.501.Iss. 5 Vol. 43. Aquatic Mammals Journal. September 23, 2017
  24. ↑ Iwata, T.; Akamatsu, T.; Thongsukdee, S.; Cherdsukjai, P.; Adulyanukosol, K.; Sato, K. (2017). "Tread-water feeding of Bryde's whales". Current Biology. 27 (21): 1154–1155. doi:10.1016/j.cub.2017.09.045.
  25. ↑ "Trap-Feeding – A new humpback feeding behaviour!". Marine Education and Research Society (MERS). 2017. Retrieved 5 October 2017.
  26. ↑ Larry Pynn (2017-11-26). "New feeding behaviour adopted by humpback whales off Vancouver Island". Vancouver Sun. Retrieved 2017-11-27.
  27. ↑ "Unusual Encounter with Bryde's Whale in Ecuador". 6 July 2016.
  28. 1 2 Yamada, T. K., L.-S. Chou, S. Chantrapornsyl, K. Adulyanukosol, S. K. Chakravarti, M. Oishi, S. Wada, C.-J. Yao, T. Kakuda, Y. Tajima, K. Arai, A. Umetani & N. Kurihara (2006). "Middle sized balaenopterid whale specimens (Cetacea: Balaenopteridae) preserved at several institutions in Taiwan, Thailand and India". Memoirs of the National Science Museum, Tokyo, 44:1–10.
  29. ↑ Yamada, T. K., T. Kakuda & Y. Tajima (2008). "Middle-sized balaenopterid whale specimens in the Philippines and Indonesia". Memoirs of the National Science Museum. Tokyo, 45:75–83.
  30. ↑ Goto, M., Kanda, N., & Pastene, L. A. (2004). "Analysis of mtDNA sequences in Bryde's whales from the central western North Pacific and Baja California Peninsula". SC/56/PF15. Unpublished report to the Scientific Committee of the International Whaling Commission.
  31. ↑ http://www.nmfs.noaa.gov/pr/sars/2013/po2013_brydeswhale-hi.pdf
  32. ↑ "Bryde's whale". iNaturalist.org.
  33. ↑ http://www.navymarinespeciesmonitoring.us/files/6313/8628/5792/Fulling_et_al_2011_Distribution_and_abundance_of_cetaceans_Guam_and_CNMI-MISTCS_Pacific_Science.pdf
  34. ↑ "Под Находкой выбросился на берег пятиметровый кит". www.pk25.ru.
  35. ↑ Masseti, Marco (2010). "The mammals of the Farasan archipelago, Saudi Arabia". Turk. J. Zool. 34: 359–365.
  36. 1 2 3 https://www.cbd.int/doc/meetings/mar/ebsaws-2015-02/other/ebsaws-2015-02-gobi-submission9-en.pdf
  37. ↑ "PBS – The Voyage of the Odyssey – Track the Voyage – MALDIVES". www.pbs.org.
  38. ↑ http://www.vliz.be/imisdocs/publications/246400.pdf.
  39. ↑ Lambros M.. Whale Watching In Kuwait. LIVIN Q8. Retrieved on September 21, 2017
  40. ↑ 茂木陽一. "ホルムズ海峡でGTフィッシング②".
  41. 1 2 Steiner, Lisa; et al. (2007). "Bryde's Whales, Balaenoptera edeni, observed in the Azores: a new species record for the region". Mar Biod. Rec. 1: 1–6. doi:10.1017/s1755267207007282.
  42. ↑ Small B. D.. 1995. Methods in the Mediterranean: Historical and Archaeological Views on Texts and Archaeology. pp. 257. Brill Publishers. Retrieved on September 09, 2017
  43. ↑ Lodi, Liliane; Tardin, Rodrigo H.; Hetzel, Bia; Maciel, Israel S.; Figueiredo, Luciana D.; Simão, Sheila M.; Lodi, Liliane; Tardin, Rodrigo H.; Hetzel, Bia; Maciel, Israel S.; Figueiredo, Luciana D.; Simão, Sheila M. (1 April 2015). "Bryde's whale (Cetartiodactyla: Balaenopteridae) occurrence and movements in coastal areas of southeastern Brazil". Zoologia (Curitiba). 32 (2): 171–175. doi:10.1590/S1984-46702015000200009 – via SciELO.
  44. ↑ Machado M.. 2014. Final de verão do Rio tem 'rolezinho' de baleias em busca de comida. Globo.com (pt). Retrieved on Septem8er 18, 2017
  45. ↑ Lodi L.. 2016. Baleia-de-bryde: Navegando com as gigantes. Blog ECONSERV – Ecologia, Conservação e Serviços. Retrieved on September 18, 2017
  46. ↑ Lima D. L.. 2016. Frequentes na orla do Rio neste verão, baleias-de-bryde despertam curiosidade.Globo.com. Retrieved on Septem8er 18, 2017
  47. ↑ Lodi L.. Tardin H. R.. Hetzel B.. Maciel S. I.. Figueiredo D. L.. Simão M. S.. 2015. Bryde's whale (Cetartiodactyla: Balaenopteridae) occurrence and movements in coastal areas of southeastern Brazil. Zoologia (Curitiba) vol.32 no.2 Curitiba Mar./Apr. 2015. SciELO. Retrieved on September 19, 2017
  48. ↑ Luksenburg, Jolanda A. and George Sangster. (2012). "Molecular identification of the first Bryde's whale (Balaenoptera brydei) for Aruba, southern Caribbean". The Cetaceans of Aruba: a Multidisciplinary Study 98.
  49. ↑ Hazevoet J.C.. Monteiro V.. López P.. Varo N.. Torda G.. Simon Berrow S.. Gravanita E.. 2010. Recent data on whales and dolphins (Mammalia: Cetacea) from the Cape Verde Islands, including records of four taxa new to the archipelago. Zoologia Caboverdiana 1 (2). pp.75-99. ISSN 2074-5737. Sociedade Caboverdiana de Zoologia
  50. ↑ NOAA Fisheries. 2017. The Expert Is In! Gulf of Mexico Bryde's Whales. Retrieved on September 28, 2017
  51. ↑ Dolphin Academy Curacao. Bryde’s Whale (Balaenoptera edeni). Retrieved on March 06, 2017
  52. ↑ Shimada, H.; Pastene, L.A. (1995). "Report of a Sightings Survey off the Solomon Islands with Comments on Bryde's Whale Distribution". Rep. Int. Whal. Commn. 45: 413–418.
  53. ↑ Bijukumar, A.; Jijith, S.S.; Kumar, U.S.; George, S. (2012). "DNA barcoding of the Bryde's Whale Balaenoptera edeni Anderson (Cetacea: Balaenopteridae) washed ashore along Kerala coast, India". Journal of Threatened Taxa. 4 (3): 2436–2443. doi:10.11609/jott.o2859.2436-43.
  54. ↑ 中华人民共和国濒危物种科学委员会. [濒危物种数据库 - 鳀鲸 Balaenoptera edeni Anderson, 1879]. the CITES. Retrieved on November 24. 2014
  55. ↑ Wang Pei Lei (王丕烈). (1984). 中国近海鲸类的分布. 辽宁省海洋水产研究所 (Liaoning Ocean and Fisheries Science Research Institute). 中国知网 (the CNKI.NET). Retrieved on November 24. 2014
  56. ↑ 2016. 北海附近海域惊现庞大鲸鱼，画面感萌翻啦！[视频+多图]
  57. ↑ 2006. 俺在北部湾新拍到的鲸～(图)
  58. ↑ 2009. 北部湾(2)_须鲸! Archived 6 March 2017 at the Wayback Machine.
  59. ↑ 2017. 刚刚铁山港附近海域，惊现多条鲸鱼。 Archived 6 March 2017 at the Wayback Machine.
  60. ↑ "鲸鱼宝宝再次造访的涠洲岛海域！-新闻资讯-中国涠洲岛网". www.cnwzd.com. Archived from the original on 4 November 2016. Retrieved 4 November 2016.
  61. ↑ 北海涠洲岛海域出现一条大鲸鱼到访。 Archived 4 November 2016 at the Wayback Machine.
  62. ↑ https://swfsc.noaa.gov/uploadedFiles/Divisions/PRD/Publications/Smithetal.1997b(35).pdf
  63. ↑ Wongthong P.. True J.. Manopawitr P.. Suwanno W. (photo). 2015. BOBLME-2015-Ecology-36: Situation analysis of the Myeik Archipelago (pdf). The Bay of Bengal Large Marine Ecosystem Project. Retrieved on March 02, 2017
  64. ↑ Acebes V.M.J., 2009, A history of Whaling in Philippines, Historical Perspectives of Fisheries Exploitation in the Indo-Pacific, Asia Research Centre, Murdoch University
  65. ↑ http://www.marinemammalscience.org/smmtampa/Ponzo_Alessandro_12-10.pdf
  66. ↑ "Rarely-seen whale spotted in Bohol".
  67. ↑ Hellingman, Jeroen. "Bryde's Whale". Bohol.ph.
  68. 1 2 "Rare whale footage shot by drone thanks to AUT scientists". YouTube. Aukland University of Technology. Retrieved 16 November 2016.
  69. ↑ Smultea, Mary A.; Douglas, Annie B.; Bacon, Cathy E.; Jefferson, Thomas A.; Mazzuca, Lori (2012). "Bryde's Whale (Balaenoptera brydei/edeni) Sightings in the Southern California Bight". Aquatic Mammals. 38 (1): 92–97. doi:10.1578/am.38.1.2012.92.
  70. 1 2 "Appendix II Archived 11 June 2011 at the Wayback Machine." of the Convention on the Conservation of Migratory Species of Wild Animals (CMS). As amended by the Conference of the Parties in 1985, 1988, 1991, 1994, 1997, 1999, 2002, 2005 and 2008. Effective: 5 March 2009.
  71. ↑ "Pacific Cetaceans". Pacific Cetaceans.
  72. ↑ Tønnessen, Johan; Arne Odd Johnsen (1982). The History of Modern Whaling. University of California Press, Berkeley. ISBN 0-520-03973-4.
  73. ↑ Whaling in 1965–66 and summer 1966 (IWS). Luna.pos.to. Retrieved on 2011-09-15.
  74. ↑ Berzin, A. (2008). The Truth About Soviet Whaling (Marine Fisheries Review), p 57.
  75. ↑ International Whaling Statistics.
  76. ↑ "India: Large Bryde's whale washes up on Mumbai beach – BBC News". BBC News. Retrieved 2016-01-29.
  77. ↑ "45-ft whale largest mammal to wash ashore in Mumbai". 23 May 2017.

Bibliography

  • Baker A.N.; Madon B. (2007). Bryde's whales (Balaenoptera cf. brydei Olsen 1913) in the Hauraki Gulf and Northeastern New Zealand waters. Science for Conservation 272. p. 23. Department of Conservation, New Zealand. Bryse's whales (Balaenoptera cf. brydei Olsen 1913) in the Hauraki Gulf and northeastern New Zealand waters. (PDF) . Retrieved on 2011-09-15.
  • National Audubon Society Guide to Marine Mammals of the World, Reeves, Stewart, Clapham and Powell, 2002, ISBN 0-375-41141-0.
  • Whales & Dolphins Guide to the Biology and Behaviour of Cetaceans, Maurizio Wurtz and Nadia Repetto. ISBN 1-84037-043-2.
  • Encyclopedia of Marine Mammals, editors Perrin, Wursig and Thewissen, ISBN 0-12-551340-2.
  • Whales, Dolphins and Porpoises, Carwardine (1995, reprinted 2000), ISBN 978-0-7513-2781-6.
  • Named after a Norwegian diplomat, The Star, 16 December 2006.


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