Geodiversitas 32(2):331-363, E. D. Cope. Fin whale—Balaenoptera physalus. The biggest blue whale found was 190 tons and measured 98 feet long. Some (namely B. borealina, B. definata, B. emarginata, B. gibbosa, B. minutis, B. rostratella, B. sibbaldina, and B. similis) are either nondiagnostic, highly fragmentary, or had no holotype specimen named, hence are considered nomina dubia. La familia Balaenopteridae se distingue de las demás familias de misticetos por la presencia de pliegues en la garganta y región ventral (pliegues gulares) que expanden enormemente cuando se alimentan al tragar agua que es filtrada por las barbas.Poseen una aleta dorsal. Acoustic monitoring during migrations of Australian pygmy whales in the southeastern Indian Ocean resulted in an estimate of 660–1,750 whales. family Balaenopteridae genus Balaenoptera species Balaenoptera musculus Providers NZIB Provider Contribution Summary. Balaenoptera is a diverse genus and comprises all but one of the extant species in its family—the other species is the humpback whale (Megaptera novaeangliae). Subfamily: Balaenopterinae. The Diver's guide to Fishes, Whales, Dolphins and marine Invertebrates, 307 pp. [133] Vocalizations have been recorded north near Diego Garcia in May–July,[134] in the Mozambique Channel in November–December[135] and Madagascar Basin south of La Reunion Island in March–June,[68] southwest of Amsterdam Island in December–May,[68] off Crozet Island in December–June. Some of the biggest individuals may eat up to 6 tons of krill in 1 day. Balaenoptera synonyms, Balaenoptera pronunciation, Balaenoptera translation, English dictionary definition of Balaenoptera. This family is known as ‘rorquals’, the Norwegian term for ‘furrow whales’. [59][62] They also produce short, 1–4 s duration, frequency-modulated calls ranging in frequency between 80 and 38 Hz. The maximum speed of a blue whale while being chased or harassed has been reported at 20 to 48 km/h (10–25 knots).[47]. [5][21][22], In the Northern Hemisphere, males weigh an average 100 tons (200,000 lb) and females 112 tons (224,000 lb). The rorquals differ from the other baleen whales in having dorsal fins, short baleen plates, and heads that are flat on top, rather than arched or curved. Balaenoptera musculus (Blue Whale) is a species of mammals in the family rorquals. Manual; media. Omura's whale—Balaenoptera omurai. Because of the high cost of lunge feeding, it has been estimated that blue whales must target densities greater than 100 krill/m3. The fundamental frequency for blue whale vocalizations ranges from 8 to 25 Hz. Life expectancy: Confirmed at least 50 years, estimated to reach 70-90 years, with an inferred generation time of 31 years. Balaenoptera f. A taxonomic genus within the family Balaenopteridae – the rorqual whales. Chemicals and Drugs 4. In the summer, this population migrates to their feeding grounds southwest of Kamchatka, south of the Aleutian Islands, to the Gulf of Alaska,[43][44] and to waters off Vancouver Island, Canada. The genus name, Balaenoptera, means winged whale[10] while the species name, musculus, could mean “muscle” or a diminutive form of “mouse”, potentially a clever pun by Carl Linnaeus,[4][10] who named the species in Systema Naturae. Balaenopteridae. [265][266][267][268][269][270] The most recent analysis estimates that the Balaenopteridae family diverged from other families in the late Miocene, between 10.48 and 4.98 million years ago. This allows them to acquire the energy necessary for sustaining basic metabolic maintenance costs while storing additional energy necessary for migration and reproduction. Lagerquist et al. Known to grow as long as 110 feet (33 m) and weigh as much as 150 tons (136,000 kg), it is the largest animal ever to inhabit the earth. [73][74][75][76][77] Acoustic data indicate that they are distributed in the sub-Antarctic waters of the southern Indian Ocean in summer and fall, including near the Crozet Islands and Amsterdam Island. Balaenoptera musculus. ... > infraorder Cetacea > superfamily Mysticeti > family Balaenopteridae > genus Balaenoptera > species Balaenoptera … It includes minke, Bryde's, sei, fin, humpback, and blue whales. Blue whales, Balaenoptera musculus (Linnaeus, 1758), like all rorquals (Family Balaenopteridae, the family that includes the blue whale, Bryde’s whale, fin whale, humpback whale, minke whale, and sei whale), are long, slender whales that are much more streamlined than other large whales. The blue whale was once abundant in nearly all the oceans on Earth until the end of the 19th century. Constant, P. (2007) Marine Life of the Galapagos. [190][191] The third population, the western North Atlantic population, is the only population currently recognized in the North Atlantic. In the Southern Hemisphere, blue whales can be seen in Gulf of Corcovado between Guaitecas Archipelago, Chiloé Island, and the Chilean mainland, and off the west coast of Chiloe Island from December through March. Species Balaenoptera musculus blue … Balaenoptera musculus: Author: Linnaeus 1758: Standard reference: Perrin, W.F., Wursig, B. and Thewissen J.G.M. [41][42][58][59][60][61][62][63][64][65][66][67][68][69], 3. )! There remain only much smaller concentrations in the Eastern North Pacific (1,647), Central North Pacific (63–133), North Atlantic (1,000–2,000), Antarctic (2,280), New Zealand (718), Northern Indian Ocean (270) and Chile (570-760). [142], Chilean population In summer and fall, Chilean blue whales feed along the west coast of South America, particularly the Chiloense Ecoregion, including the Corcovado Gulf, Pacific and northwest coasts of Chiloé Island, and inner sea of Chiloe Archipelago. 1. [198][199] Female pygmy blue whales are 68.9–71.2 ft (21.0–21.7 m) in length[21] and roughly 10 years old at age of sexual maturity. ... Blue Whale - Balaenoptera musculus Blue whales are the loudest animals on Earth! Blue whales are formally classified as endangered under the Endangered Species Act[396] and considered depleted and strategic under the Marine Mammal Protection Act. See more ideas about Whale, Cetacean, Mammals. Academic Press: COVID-19 & MIGRATORY SPECIES. [72] Recovery and current population sizes vary regionally and by subspecies. [271] The Australian pygmy blue whale diverged during the Last Glacial Maximum. The Blue Whale is a blue-steel gray member of the family Balaenopteridae (Rorquals), the same family as the Fin Whale and the Sei Whale. [48][110] The northern extent can seasonally overlap with the Central North Pacific population in the Gulf of Alaska. Balaenoptera musculus (Linnaeus, 1758) – Blue Whale, Ballena azul, rorqual bleu : Direct Children: Subspecies: Balaenoptera musculus brevicauda Ichihara, 1966 – Pygmy Blue Whale : Subspecies: Balaenoptera musculus indica Blyth, 1859 – Great Indian Rorqual, Northern Indian Ocean blue whale : Subspecies It was previously thought that blue whales in the North Pacific belonged to at least five separate populations;[211] however, evidence from movement data derived from satellite tags,[40][276] photograph-identification,[7] and acoustic data[44][48][65] supports two populations in the North Pacific—the Eastern and Central and Western North Pacific populations, with divisions according to acoustic calls being estimated by Monnahan et al.[277]. Species Name. Transactions and Proceedings of the Paleontological Society of Japan 61:183-187, "A newly discovered species of living baleen whale", "List of marine mammal species and subspecies", "Population genetic structure of the South American Bryde's whale", From Finbacks to Humpbacks: Investigation of the Evolutionary History of Balaenopteridae, https://en.wikipedia.org/w/index.php?title=Balaenoptera&oldid=992005282, Taxa named by Bernard Germain de Lacépède, Articles containing Ancient Greek (to 1453)-language text, Articles with unsourced statements from July 2020, Creative Commons Attribution-ShareAlike License, This page was last edited on 2 December 2020, at 23:57. J. Cetacean res. Blue whales capture krill through lunge feeding, a bulk filter-feeding strategy that involves accelerating toward a prey patch at high speeds,[176][177][178] opening the mouth 80–90°,[179][180] and inverting the tongue, creating a large sac. However, the Soviet Union continued illegal whaling into the 1970s,[87][292] and the last catch was taken by a Spanish expedition in 1978. [231][232] Blue whale inner ears appear well adapted for detecting low-frequency sounds. [15][195], Female blue whales give birth every two to three years, depending on body condition and lactation period. Blue (Balaenoptera musculus), fin (B. physalus), and sei (B. borealis) whales are collectively referred to in this Recovery Strategy as balaenopterids (order Cetacea, family Balaenopteridae). IUCN (2015) The IUCN Red List of Threatened Species. Genus. Home; about. Taxon Concept ... Based Concepts Has Parent Balaenoptera (In use by NZOR) Preferred Name Balaenoptera musculus (In use by NZOR) Subordinate Taxon Concept Full Name Balaenoptera musculus brevicauda … [80], Pygmy subspecies (B. m. brevicauda) – Western Australia/Indonesia population: This population feeds in Perth Canyon off Western Australia[75] and between the Great Australian Bight and Bass Strait off South Australia and Victoria[73][137] in the summer before migrating to waters off Indonesia to breed in the winter. [209], For Antarctic blue whales, a single calf is born at 23 ft (7 m) in length and weighs 2.8-3 tons (2540–2722 kg). Select from premium Balaenoptera Musculus of the highest quality. [393][394] The protected status of North Atlantic blue whales was not recognized by Iceland until 1960.[395]. Balaenoptera is a diverse genus and comprises all but one of the extant species in its family—the other species is the humpback whale (Megaptera novaeangliae). Scientific Name Rank species Governing Code ICZN Is Recombination No. [30], The five blue whale subspecies recognized by the Society for Marine Mammalogy’s Committee on Taxonomy[31][32] are distributed in all major ocean basins, except the Bering Sea and the Arctic Ocean, although blue whales have been sighted near the ice edge in the North Atlantic. [220] Two live blue-fin whale hybrids have since been documented in the Gulf of St. Lawrence, Canada and in the Azores (Portugal). Blue whales are the largest animals ever to live on our planet. Cetaceans include all whales, dolphins,... Mysticeti. [5][157][158][159] The main prey species of krill targeted by blue whales varies among habitat in the different ocean basins. [259][260], Blue whales are rorquals, in the family Balaenopteridae[261] whose extant members include the fin whale (Balaenoptera physalus), sei whale (Balaenoptera borealis), Bryde’s whale (Balaenoptera brydei), Eden's whale (Balaenoptera edeni), common minke whale (Balaenoptera acutorostrata), Antarctic minke whale (Balaenoptera bonaerensis), Omura's whale (Balaenoptera omurai), and humpback whale (Megaptera novaeangliae). Balaenoptera musculus (Linnaeus, 1758) - Ocean Biogeographic Information System. [6][7][8], Additional distinguishing features of the blue whale include a broad, flat head, which appears U-shaped from above; 270–395 entirely black baleen plates on each side of their upper jaw; 60–88 expandable throat pleats; long, slender flippers; a small (up to 13 inches (33 cm)) falcate dorsal fin positioned far back toward the tail; a thick tail stock; and a massive, slender fluke. [23] The largest heart weight measured from a stranded North Atlantic blue whale was 0.1985 tons (397 lb), the largest known in any animal.[24]. Blue whales are [248] The blue whale call recorded off Madagascar, a two‐unit phrase,[249] starts with 5–7 pulses with a center frequency of 35.1 ± 0.7 Hz and duration of 4.4 ± 0.5 s followed by a 35 ± 0 Hz tone lasting 10.9 ± 1.1 s.[248] In the Southern Ocean, blue whales calls last roughly 18 seconds and consist of a 9-s-long, 27 Hz tone, followed by a 1-s downsweep to 19 Hz, and another downsweep to 18 Hz. Bay CA Jun 28th: marinespecies.org: taxname:137090 ) classification 154 ] however, this population ’ s distribution North! Captured in the past as an indication of age time of day,. Words Balaena meaning whale and pteron meaning fin [ 310 ], the best chance to blue... 112 tons ( 198,000 lb ) and 99 tons ( 260,000 lb ) and females 130 tons 200,000! Of 2.8 ± 2.2 km/h greater than 100 krill/m3 recorded from India [ 152 ] 397... 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