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Pennahia Ovata
''Pennahia'' is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums and croakers. The fishes in this genus are found in the Indo-West Pacific region. Taxonomy ''Pennahia'' was first proposed as a subgenus of '' Johnius'' in 1926 by the American ichthyologist Henry Weed Fowler with ''Otolithus macrophthalmus'', which had been described by Pieter Bleeker in 1849 from Jakarta, as the type species. ''O. macropthalmus'' was later shown to be synonymous with ''Johnius aneus'', a species described by Marcus Elieser Bloch from Malabar in 1793. This genus has been placed in the subfamily Otolithinae by some workers, but the 5th edition of ''Fishes of the World'' does not recognise subfamilies within the Sciaenidae which it places in the order Acanthuriformes. Etymology ''Pennahia'' derives from ''pinnah'', a local Tamil name for the type species. Species ''Pennahia'' contains the following recognised species: * '' Pennahia aneus'' (Bloch, 1793) (Donkey croak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Henry Weed Fowler
Henry Weed Fowler (March 23, 1878 – June 21, 1965) was an American zoologist born in Holmesburg, Pennsylvania. He studied at Stanford University under David Starr Jordan. He joined the Academy of Natural Sciences in Philadelphia and worked as an assistant from 1903 to 1922, associate curator of vertebrates from 1922 to 1934, curator of fish and reptiles from 1934 to 1940 and curator of fish from 1940 to 1965. He published material on numerous topics including crustaceans, birds, reptiles and amphibians, but his most important work was on fish. In 1927 he co-founded the American Society of Ichthyologists and Herpetologists and acted as treasurer until the end of 1927. In 1934 he went to Cuba, alongside Charles Cadwalader (president of the Academy of Natural Sciences of Philadelphia), at the invitation of Ernest Hemingway to study billfishes, he stayed with Hemingway for six weeks and the three men developed a friendship which continued after this trip and Hemingway sent speci ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tamil Language
Tamil (; ' , ) is a Dravidian language natively spoken by the Tamil people of South Asia. Tamil is an official language of the Indian state of Tamil Nadu, the sovereign nations of Sri Lanka and Singapore, and the Indian territory of Puducherry. Tamil is also spoken by significant minorities in the four other South Indian states of Kerala, Karnataka, Andhra Pradesh and Telangana, and the Union Territory of the Andaman and Nicobar Islands. It is also spoken by the Tamil diaspora found in many countries, including Malaysia, Myanmar, South Africa, United Kingdom, United States, Canada, Australia and Mauritius. Tamil is also natively spoken by Sri Lankan Moors. One of 22 scheduled languages in the Constitution of India, Tamil was the first to be classified as a classical language of India. Tamil is one of the longest-surviving classical languages of India.. "Tamil is one of the two longest-surviving classical languages in India" (p. 7). A. K. Ramanujan described it as "the on ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Phil Heemstra
Phillip Clarence Heemstra (9 December 1941 – 29 August 2019) was an American-South African ichthyologist. He was born in Melrose Park, Illinois, United States as the son of Clarence William Heemstra and his wife, Lydia (born Epcke). He attended school in Ottawa, Illinois, and completed a B.Sc. Zoology in 1963 at the University of Illinois at Urbana, Illinois, as well as his MSc degree (1968) and doctorate (1974) in marine biology at the University of Miami in Miami, Florida. He moved to live in South Africa in 1978. At the time of his death, Heemstra was a curator emeritus of the South African Institute of Aquatic Biodiversity (SAIAB, formerly the J.L.B. Smith Institute of Ichthyology). He specialized in ichthyology and marine fish taxonomy. Career Heemstra was, among other things, a biologist at the marine laboratory of the U.S. Department of Natural Resources in Florida, and from 1978 to 2001 a curator of fish at J.L.B. Smith Institute of Ichthyology in Grahamstown (n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tadpole
A tadpole is the larval stage in the biological life cycle of an amphibian. Most tadpoles are fully aquatic, though some species of amphibians have tadpoles that are terrestrial. Tadpoles have some fish-like features that may not be found in adult amphibians such as a lateral line, gills and swimming tails. As they undergo metamorphosis, they start to develop functional lungs for breathing air, and the diet of tadpoles changes drastically. A few amphibians, such as some members of the frog family Brevicipitidae, undergo direct development i.e., they do not undergo a free-living larval stage as tadpoles instead emerging from eggs as fully formed "froglet" miniatures of the adult morphology. Some other species hatch into tadpoles underneath the skin of the female adult or are kept in a pouch until after metamorphosis. Having no hard skeletons, it might be expected that tadpole fossils would not exist. However, traces of biofilms have been preserved and fossil tadpoles have ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otolith
An otolith ( grc-gre, ὠτο-, ' ear + , ', a stone), also called statoconium or otoconium or statolith, is a calcium carbonate structure in the saccule or utricle of the inner ear, specifically in the vestibular system of vertebrates. The saccule and utricle, in turn, together make the ''otolith organs''. These organs are what allows an organism, including humans, to perceive linear acceleration, both horizontally and vertically (gravity). They have been identified in both extinct and extant vertebrates. Counting the annual growth rings on the otoliths is a common technique in estimating the age of fish. Description Endolymphatic infillings such as otoliths are structures in the saccule and utricle of the inner ear, specifically in the vestibular labyrinth of all vertebrates (fish, amphibians, reptiles, mammals and birds). In vertebrates, the saccule and utricle together make the ''otolith organs''. Both statoconia and otoliths are used as gravity, balance, movement, and d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Transverse Septum
The septum transversum is a thick mass of cranial mesenchyme, formed in the embryo, that gives rise to parts of the thoracic diaphragm and the ventral mesentery of the foregut in the developed human being and other mammals. Origins The septum transversum originally arises as the most cranial part of the mesenchyme on day 22. During craniocaudal folding, it assumes a position cranial to the developing heart at the level of the cervical vertebrae. During subsequent weeks the dorsal end of the embryo grows much faster than its ventral counterpart resulting in an ''apparent descent'' of the ventrally located septum transversum. At week 8, it can be found at the level of the thoracic vertebrae. Nerve supply After successful craniocaudal folding the septum transversum picks up innervation from the adjacent ventral rami of spinal nerves C3, C4 and C5, thus forming the precursor of the phrenic nerve. During the descent of the septum, the phrenic nerve is carried along and assumes its des ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Swim Bladder
The swim bladder, gas bladder, fish maw, or air bladder is an internal gas-filled Organ (anatomy), organ that contributes to the ability of many bony fish (but not cartilaginous fish) to control their buoyancy, and thus to stay at their current water depth without having to expend energy in swimming. Also, the Dorsum (biology), dorsal position of the swim bladder means the center of mass is below the centroid, center of volume, allowing it to act as a stabilizing agent. Additionally, the swim bladder functions as a resonator, resonating chamber, to produce or receive sound. The swim bladder is evolutionarily Homology (biology), homologous to the lungs. Charles Darwin remarked upon this in ''On the Origin of Species''.Darwin, Charles (1859''Origin of Species''Page 190, reprinted 1872 by D. Appleton. Darwin reasoned that the lung in air-breathing vertebrates had derived from a more primitive swim bladder. In the embryonic stages, some species, such as Ophioblennius atlanticus, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennahia Pawak
''Pennahia'' is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums and croakers. The fishes in this genus are found in the Indo-West Pacific region. Taxonomy ''Pennahia'' was first proposed as a subgenus of '' Johnius'' in 1926 by the American ichthyologist Henry Weed Fowler with ''Otolithus macrophthalmus'', which had been described by Pieter Bleeker in 1849 from Jakarta, as the type species. ''O. macropthalmus'' was later shown to be synonymous with ''Johnius aneus'', a species described by Marcus Elieser Bloch from Malabar in 1793. This genus has been placed in the subfamily Otolithinae by some workers, but the 5th edition of ''Fishes of the World'' does not recognise subfamilies within the Sciaenidae which it places in the order Acanthuriformes. Etymology ''Pennahia'' derives from ''pinnah'', a local Tamil name for the type species. Species ''Pennahia'' contains the following recognised species: * '' Pennahia aneus'' (Bloch, 1793) (Donkey croak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kunio Sasaki
Kunio (written: 邦夫, 邦男, 邦雄, 邦生, 國男, 國士, 国男, 国夫, 州男 or 久仁生) is a masculine Japanese given name. Notable people with the name include: *, Japanese businessman *, Japanese businessman *, Japanese judge *, Japanese politician *, Japanese mayor *, Japanese Go player *, Japanese field hockey player *, Japanese animator *, Japanese dramatist and writer * Kunio Kitamura (born 1968), Japanese footballer * Kunio Kobayashi (born 1967), Japanese karateka *Kunio Lemari (1942–2008), Marshallese politician and President of the Marshall Islands *, Japanese architect *, Japanese photographer *, Japanese actor and voice actor (not to be confused with the manga character of the same name) *, Japanese politician *, Japanese general *, Japanese businessman *, Japanese footballer *, Japanese writer *, Japanese mechanical designer *, Japanese cross-country skier *Kunio Shimizu (born 1934), Japanese playwright *, Japanese writer *Kunio Yamazaki (died 2013), Japan ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennahia Ovata
''Pennahia'' is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums and croakers. The fishes in this genus are found in the Indo-West Pacific region. Taxonomy ''Pennahia'' was first proposed as a subgenus of '' Johnius'' in 1926 by the American ichthyologist Henry Weed Fowler with ''Otolithus macrophthalmus'', which had been described by Pieter Bleeker in 1849 from Jakarta, as the type species. ''O. macropthalmus'' was later shown to be synonymous with ''Johnius aneus'', a species described by Marcus Elieser Bloch from Malabar in 1793. This genus has been placed in the subfamily Otolithinae by some workers, but the 5th edition of ''Fishes of the World'' does not recognise subfamilies within the Sciaenidae which it places in the order Acanthuriformes. Etymology ''Pennahia'' derives from ''pinnah'', a local Tamil name for the type species. Species ''Pennahia'' contains the following recognised species: * '' Pennahia aneus'' (Bloch, 1793) (Donkey croak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Pennahia Macrocephalus
''Pennahia'' is a genus of marine ray-finned fishes belonging to the family Sciaenidae, the drums and croakers. The fishes in this genus are found in the Indo-West Pacific region. Taxonomy ''Pennahia'' was first proposed as a subgenus of '' Johnius'' in 1926 by the American ichthyologist Henry Weed Fowler with ''Otolithus macrophthalmus'', which had been described by Pieter Bleeker in 1849 from Jakarta, as the type species. ''O. macropthalmus'' was later shown to be synonymous with ''Johnius aneus'', a species described by Marcus Elieser Bloch from Malabar in 1793. This genus has been placed in the subfamily Otolithinae by some workers, but the 5th edition of ''Fishes of the World'' does not recognise subfamilies within the Sciaenidae which it places in the order Acanthuriformes. Etymology ''Pennahia'' derives from ''pinnah'', a local Tamil name for the type species. Species ''Pennahia'' contains the following recognised species: * '' Pennahia aneus'' (Bloch, 1793) (Donkey croak ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
