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Irrawaddy Dolphin
The Irrawaddy dolphin (''Orcaella brevirostris'') is a euryhaline species of oceanic dolphin found in scattered subpopulations near sea coasts and in estuaries and rivers in parts of the Bay of Bengal and Southeast Asia. It closely resembles the Australian snubfin dolphin (of the same genus, ''Orcaella''), which was not described as a separate species until 2005. It has a slate blue to a slate gray color. Although found in much of the riverine and marine zones of South and Southeast Asia, the only concentrated lagoon populations are found in Chilika Lake in Odisha, India and Songkhla Lake in southern Thailand. Taxonomy One of the earliest recorded descriptions of the Irrawaddy dolphin was by Sir Richard Owen in 1866 based on a specimen found in 1852, in the harbour of Visakhapatnam on the east coast of India. It is one of two species in its genus. It has sometimes been listed variously in a family containing just itself and in the Monodontidae and Delphinapteridae. Widespre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australian Snubfin Dolphin
The Australian snubfin dolphin (''Orcaella heinsohni'') is a dolphin found off the northern coasts of Australia. It closely resembles the Irrawaddy dolphin (of the same genus, ''Orcaella'') and was not described as a separate species until 2005. The closest relative to the genus ''Orcaella'' is the killer whale, ''Orcinus orca''. The Australian snubfin has three colors on its skin, while the Irrawaddy dolphin only has two. The skull and the fins also show minor differences between the two species. Taxonomy The taxonomic specific name, ''heinsohni'', was chosen in honor of George Heinsohn, an Australian biologist who worked at James Cook University, "for his pioneering work on northeast Australian odontocetes, including the collection and initial analysis of ''Orcaella heinsohni'' specimens which form the basis for much of our knowledge of the new species". New species of large mammals are quite rarely described nowadays, and those that are usually are from remote areas � ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Owen
Sir Richard Owen (20 July 1804 – 18 December 1892) was an English biologist, comparative anatomist and paleontologist. Owen is generally considered to have been an outstanding naturalist with a remarkable gift for interpreting fossils. Owen produced a vast array of scientific work, but is probably best remembered today for coining the word '' Dinosauria'' (meaning "Terrible Reptile" or "Fearfully Great Reptile"). An outspoken critic of Charles Darwin's theory of evolution by natural selection, Owen agreed with Darwin that evolution occurred, but thought it was more complex than outlined in Darwin's ''On the Origin of Species''. Owen's approach to evolution can be considered to have anticipated the issues that have gained greater attention with the recent emergence of evolutionary developmental biology. Owen was the first president of the Microscopical Society of London in 1839 and edited many issues of its journal – then known as '' The Microscopic Journal''. Owen als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Delphinidae
Oceanic dolphins or Delphinidae are a widely distributed family of dolphins that live in the sea. Close to forty extant species are recognised. They include several big species whose common names contain "whale" rather than "dolphin", such as the Globicephalinae (round-headed whales including the orca and pilot whale). Delphinidae is a family within the superfamily Delphinoidea, which also includes the porpoises (Phocoenidae) and the Monodontidae (beluga whale and narwhal). River dolphins are relatives of the Delphinoidea. Oceanic dolphins range in size from the and Maui's dolphin to the and orca, the largest known dolphin. Several species exhibit sexual dimorphism; the males are larger than females. They have streamlined bodies and two limbs that are modified into flippers. Though not quite as flexible as seals, some dolphins can travel at speeds 29 km/h (18 mph) for short distances. Most delphinids primarily eat fish, along with a smaller number of squid and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Humpback Dolphin
Humpback dolphins are members of the genus ''Sousa''. These dolphins are characterized by the conspicuous humps and elongated dorsal fins found on the backs of adults of the species. They are found close to shore along the coast of West Africa (Atlantic species/variety) and right along the coast of the Indian Ocean from South Africa to Australia (Indo-Pacific species/varieties). Several institutions have made a proposal to divide the Indo-Pacific species into two distinct species: the Indo-Pacific humpback dolphin and the Australian humpback dolphin. Description The humpback dolphin is a coastal dolphin that can be found along the coast of Africa and India south to Australia, areas differing for separate varieties. The humpback dolphin has a hump ahead of the dorsal fin, as well as a careen on a ventral side. The dorsal fin of the humpback dolphin is to some degree falcate. The pectoral fins are considerably small and the tail flukes have a well-defined median notch. On each ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Finless Porpoise
''Neophocaena'' is a genus of porpoise native to the Indian and Pacific oceans, as well as the freshwater habitats of the Yangtze River basin in China China, officially the People's Republic of China (PRC), is a country in East Asia. It is the world's List of countries and dependencies by population, most populous country, with a Population of China, population exceeding 1.4 billion, slig .... They are commonly known as finless porpoises. Genetic studies indicate that ''Neophocaena'' is the most basal living member of the porpoise family. There are three species in this genus: Description The finless porpoises are the only porpoises to lack a true dorsal fin. Instead there is a low ridge covered in thick skin bearing several lines of tiny tubercles. In addition, the forehead is unusually steep compared with those of other porpoises. With fifteen to twenty-one teeth in each jaw, they also have, on average, fewer teeth than other porpoises, although there is some ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Orcaella Brevirostris 1878
The snubfin dolphins (''Orcaella'') are a genus of cetaceans containing two members: the Irrawaddy dolphin (''Orcaella brevirostris'') and the Australian snubfin dolphin (''Orcaella heinsohni''). The genus was long believed to be monotypic with the only species being the Irrawaddy dolphin; however, in 2005, supposed Irrawaddy dolphin populations inhabiting the Australian/New Guinean regions were found to be significantly different and were declared a separate new species named the Australian snubfin dolphin. Taxonomy and evolution Until 2005, '' Orcaella brevirostris'' was the only recognized species in the genus ''Orcaella''. However, comparisons within the populations of ''Orcaella'' inhabiting the Asia region and populations inhabiting the Australia/New Guinea region show distinctions in habitat, morphology, and genetics.Ross, G. J. (2006). Review of the conservation status of Australia's smaller whales and dolphins. Department of the Environment and Water Resources. Morpholog ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Burmese Language
Burmese ( my, မြန်မာဘာသာ, MLCTS: ''mranmabhasa'', IPA: ) is a Sino-Tibetan language spoken in Myanmar (also known as Burma), where it is an official language, lingua franca, and the native language of the Burmans, the country's principal ethnic group. Burmese is also spoken by the indigenous tribes in Chittagong Hill Tracts (Rangamati, Bandarban, Khagrachari, Cox's Bazar) in Bangladesh, Tripura state in Northeast India. Although the Constitution of Myanmar officially recognizes the English name of the language as the Myanmar language, most English speakers continue to refer to the language as ''Burmese'', after Burma, the country's once previous and currently co-official name. Burmese is the common lingua franca in Myanmar, as the most widely-spoken language in the country. In 2007, it was spoken as a first language by 33 million, primarily the Burman people and related ethnic groups, and as a second language by 10 million, particularly ethnic m ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Malay Language
Malay (; ms, Bahasa Melayu, links=no, Jawi alphabet, Jawi: , Rejang script, Rencong: ) is an Austronesian languages, Austronesian language that is an official language of Brunei, Indonesia, Malaysia, and Singapore, and that is also spoken in East Timor and parts of the Philippines and Thailand. Altogether, it is spoken by 290 million people (around 260 million in Indonesia alone in its own literary standard named "Indonesian language, Indonesian") across Maritime Southeast Asia. As the or ("national language") of several states, Standard Malay has various official names. In Malaysia, it is designated as either ("Malaysian Malay") or also ("Malay language"). In Singapore and Brunei, it is called ("Malay language"). In Indonesia, an autonomous normative variety called ("Indonesian language") is designated the ("unifying language" or lingua franca). However, in areas of Central to Southern Sumatra, where vernacular varieties of Malay are indigenous, Indonesians refe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lao Language
Lao, sometimes referred to as Laotian (, 'Lao' or , 'Lao language'), is a Kra–Dai language of the Lao people. It is spoken in Laos, where it is the official language for around 7 million people, as well as in northeast Thailand, where it is used by around 23 million people, usually referred to as Isan. Lao serves as a lingua franca among the citizens of Laos, who also speak approximately 90 other languages, many of which are unrelated to Lao. It is a tonal and analytic language, similar to other Kra-Dai languages as well as to Chinese and Vietnamese. Spoken Lao is mutually intelligible with Thai and Isan, fellow Southwestern Tai languages, to such a degree that their speakers are able to effectively communicate with one another speaking their respective languages. These languages are written with slightly different scripts but are linguistically similar and effectively form a dialect continuum. Although there is no official standard, the Vientiane dialect becam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Khmer Language
Khmer (; , ) is an Austroasiatic language spoken by the Khmer people, and the official and national language of Cambodia. Khmer has been influenced considerably by Sanskrit and Pali, especially in the royal and religious registers, through Hinduism and Buddhism. It is also the earliest recorded and earliest written language of the Mon–Khmer family, predating Mon and Vietnamese, due to Old Khmer being the language of the historical empires of Chenla, Angkor and, presumably, their earlier predecessor state, Funan. The vast majority of Khmer speakers speak Central Khmer, the dialect of the central plain where the Khmer are most heavily concentrated. Within Cambodia, regional accents exist in remote areas but these are regarded as varieties of Central Khmer. Two exceptions are the speech of the capital, Phnom Penh, and that of the Khmer Khe in Stung Treng province, both of which differ sufficiently enough from Central Khmer to be considered separate dialects of Khmer. O ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Indonesian Language
Indonesian ( ) is the official and national language of Indonesia. It is a standardized variety of Malay, an Austronesian language that has been used as a lingua franca in the multilingual Indonesian archipelago for centuries. Indonesia is the fourth most populous nation in the world, with over 270 million inhabitants—of which the majority speak Indonesian, which makes it one of the most widely spoken languages in the world. James Neil Sneddon. ''The Indonesian Language: Its History and Role in Modern Society''. UNSW Press, 2004. Most Indonesians, aside from speaking the national language, are fluent in at least one of the more than 700 indigenous local languages; examples include Javanese and Sundanese, which are commonly used at home and within the local community. However, most formal education and nearly all national mass media, governance, administration, and judiciary and other forms of communication are conducted in Indonesian. Under Indonesian rule from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bengali Language
Bengali ( ), generally known by its endonym Bangla (, ), is an Indo-Aryan language native to the Bengal region of South Asia. It is the official, national, and most widely spoken language of Bangladesh and the second most widely spoken of the 22 scheduled languages of India. With approximately 300 million native speakers and another 37 million as second language speakers, Bengali is the fifth most-spoken native language and the seventh most spoken language by total number of speakers in the world. Bengali is the fifth most spoken Indo-European language. Bengali is the official and national language of Bangladesh, with 98% of Bangladeshis using Bengali as their first language. Within India, Bengali is the official language of the states of West Bengal, Tripura and the Barak Valley region of the state of Assam. It is also a second official language of the Indian state of Jharkhand since September 2011. It is the most widely spoken language in the Andaman and Nicob ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
