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Antarctoneptunea
''Antarctoneptunea'' is a genus of sea snails, marine gastropod mollusks in the family Austrosiphonidae, the true whelks. Distribution ''Antarctoneptunea'' marine snails occur in deep water surrounding New Zealand and in Southern Ocean encircling Antarctica, particularly in the Ross Sea. Dell R.K., Antarctic Mollusca with special reference to the fauna of the Ross Sea, The Royal Society of New Zealand Bulletin 27. Evolution Molecular phylogenetic trees based on mitochondrial genomic and nuclear ribosomal DNA sequence data indicate that ''Antarctoneptunea'' is closely related to the Northern Hemisphere genus ''Kelletia'', and ''Penion ''Penion'' is a genus of large marine (ocean), marine snails, commonly known as siphon whelks, classified within the mollusc family (biology), family Austrosiphonidae, the true whelks.MolluscaBase eds. (2021). MolluscaBase. Penion P. Fischer, 188 ...'' siphon whelks found in waters surrounding New Zealand and Australia. It has been suggested t ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctoneptunea Benthicola
''Antarctoneptunea benthicola'' is a species of small-to-medium-sized predatory sea snail or whelk, a marine gastropod mollusc in the family Buccinidae, the true whelks. Description ''Antarctoneptunea benthicola'' is a small-to-medium-sized species of marine snail in the genus ''Antarctoneptunea'', the shell reaches 100 mm in height and 40 mm in diameter. Powell A. W. B., ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979 Distribution This species is endemic to New Zealand. The species occurs in deep-water, and its range extends from off the northern coast of the North Island to the New Zealand Subantarctic Islands. ''A. benthicola'' also has a Pleistocene fossil record in the South Island. Taxonomy The species was formerly recognised as ''Penion benthicolus'', but evolutionary trees based on mitochondrial and nuclear ribosomal DNA Ribosomal DNA (rDNA) is a DNA sequence that codes for ribosomal RNA. These sequences regulate tr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Antarctoneptunea Aurora
''Antarctoneptunea aurora'' is a species of sea snail, a marine gastropod mollusk in the family Buccinidae, the true whelks. Description ''Antarctoneptunea aurora'' is a small to medium-sized buccinid whelk species. Distribution ''Antarctoneptunea aurora'' occurs in the Southern Ocean surrounding Antarctica, particularly from the Ross Sea The Ross Sea is a deep bay of the Southern Ocean in Antarctica, between Victoria Land and Marie Byrd Land and within the Ross Embayment, and is the southernmost sea on Earth. It derives its name from the British explorer James Clark Ross who vi .... Specimens have been collected from depths between 188 and 603 metres. References External links Museum of New Zealand Te Papa Tongarewa, Taxon: ''Antarctoneptunea aurora'' (Hedley, 1916) (Species) Buccinidae Molluscs described in 1916 {{Buccinidae-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Penion
''Penion'' is a genus of large marine snails, commonly known as siphon whelks, classified within the mollusc family Austrosiphonidae, the true whelks.MolluscaBase eds. (2021). MolluscaBase. Penion P. Fischer, 1884. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=488452 on 2021-12-24 Description Siphon whelks are large, benthic marine snails, or whelks. Powell A. W. B., ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979 Willan, R.C., de C. Cook, S., Spencer, H.G., Creese, R.G., O’Shea, S., Jackson, G.D. Phylum Mollusca. In: de C. Cook, S.C. (eds.), ''New Zealand Coastal Marine Invertebrates 1'', 406 – 407. Canterbury University Press, Christchurch, New Zealand ''Penion'' are commonly called siphon whelks because they have a very long siphon. Species typically have a large, pointed operculum. Ponder, W.F. 1973. A review of the Australian species of ''Penion'' Fischer (Neoga ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kelletia
''Kelletia'' is a genus of large sea snails, whelks, a marine gastropod molluscs in the family Austrosiphonidae, the true whelks.Bouchet, P.; Fraussen, K. (2015). Kelletia Bayle in P. Fischer, 1884. In: MolluscaBase (2015). Accessed through: World Register of Marine Species at http://www.marinespecies.org/aphia.php?p=taxdetails&id=490535 on 2016-07-07 Distribution One extant species '' Kelletia lischkei'' occurs in the Sea of Japan off the coasts of Japan and South Korea, and another '' K. kelletii'' is found of along the coasts of California, United States and in the Baja California, Mexico. Fossil species are documented in Japan,Ogasawara, K. 2002. Cenozoic Gastropoda. In: Ikeya, N., Hirano, H., Ogasawara, K. eds. The database of Japanese fossil type specimens described during the 20th Century (Part 2). Palaeontological Society of Japan, Special Paper 40. University of Tokyo, Tokyo. California,Hertlein, L.G. 1970. A new species of fossil ''Kelletia'' (Mollusca: Gastropoda) ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Buccinulum
''Buccinulum'' is a genus of sea snails, marine gastropod molluscs in the family Buccinidae, the true whelks.MolluscaBase eds. (2020). MolluscaBase. Buccinulum Deshayes, 1830. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=137700 on 2020-06-20 Description ''Buccinulum'' are small to medium-sized marine snails.Willan, R.C., de C. Cook, S., Spencer, H.G., Creese, R.G., O’Shea, S., Jackson, G.D. Phylum Mollusca. In: de C. Cook, S.C. (eds.), ''New Zealand Coastal Marine Invertebrates 1'', 396 – 401. Canterbury University Press, Christchurch, New Zealand Species vary significantly in shell sculpture and colouration and can be difficult to distinguish from one another. Distribution The majority of extant and fossil species are from New Zealand. Powell A. W. B., ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979 Most species are commonly abundant within the intertidal and shallow sub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aeneator (gastropod)
''Aeneator'' is a genus of sea snails, marine gastropod molluscs in the family Buccinidae, the true whelks. Description ''Aeneator'' is a genus of small to medium sized marine snails. Powell A. W. B., ''New Zealand Mollusca'', William Collins Publishers Ltd, Auckland, New Zealand 1979 Large shells and fossils of ''Aeneator'' can sometimes be confused with those of ''Penion''. Distribution Most extant species of ''Aeneator'' are found around New Zealand, Chile, and Antarctica. Stilwell, J.D., Zinsmeister, W.J. 1992. Molluscan systematics and biostratigraphy, lower Tertiary La Meseta Formation, Seymour Is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Austrosiphonidae
The Austrosiphonidae are a taxonomic family of large sea snails, often known as whelks.MolluscaBase eds. (2021). MolluscaBase. Austrosiphonidae Cotton & Godfrey, 1938. Accessed through: World Register of Marine Species at: http://www.marinespecies.org/aphia.php?p=taxdetails&id=1522370 on 2021-12-24 Genera * '' Antarctoneptunea'' Dell, 1972 * '' Kelletia'' P. Fischer, 1884 * ''Penion ''Penion'' is a genus of large marine (ocean), marine snails, commonly known as siphon whelks, classified within the mollusc family (biology), family Austrosiphonidae, the true whelks.MolluscaBase eds. (2021). MolluscaBase. Penion P. Fischer, 188 ...'' P. Fischer, 1884 * '' Serratifusus'' Darragh, 1969 ;Synonyms: * ''Austrosipho'' Cossmann, 1906: synonym of ''Penion'' P. Fischer, 1884 * ''Berylsma'' Iredale, 1924: synonym of ''Penion'' P. Fischer, 1884 * ''Largisipho'' Iredale, 1929: synonym of ''Penion'' P. Fischer, 1884 * ''Verconella'' Iredale, 1914: synonym of ''Penion'' P. Fischer, 1884 (unn ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Zealand
New Zealand ( mi, Aotearoa ) is an island country in the southwestern Pacific Ocean. It consists of two main landmasses—the North Island () and the South Island ()—and over 700 smaller islands. It is the sixth-largest island country by area, covering . New Zealand is about east of Australia across the Tasman Sea and south of the islands of New Caledonia, Fiji, and Tonga. The country's varied topography and sharp mountain peaks, including the Southern Alps, owe much to tectonic uplift and volcanic eruptions. New Zealand's capital city is Wellington, and its most populous city is Auckland. The islands of New Zealand were the last large habitable land to be settled by humans. Between about 1280 and 1350, Polynesians began to settle in the islands and then developed a distinctive Māori culture. In 1642, the Dutch explorer Abel Tasman became the first European to sight and record New Zealand. In 1840, representatives of the United Kingdom and Māori chiefs ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ribosomal DNA
Ribosomal DNA (rDNA) is a DNA sequence that codes for ribosomal RNA. These sequences regulate transcription initiation and amplification, and contain both transcribed and non-transcribed spacer segments. In the human genome there are 5 chromosomes with nucleolus organizer regions: the acrocentric chromosomes 13 (RNR1), 14 ( RNR2), 15 ( RNR3), 21 (RNR4) and 22 (RNR5). The genes that are responsible for encoding the various sub-units of rRNA are located across multiple chromosomes in humans. But the genes that encode for rRNA are highly conserved across the domains, with only the copy numbers involved for the genes having varying numbers per species. In Bacteria, Archaea, and chloroplasts the rRNA is composed of different (smaller) units, the large (23S) ribosomal RNA, 16S ribosomal RNA and 5S rRNA. The 16S rRNA is widely used for phylogenetic studies. Eukaryotes The rRNA transcribed from the approximately 600 rDNA repeats forms the most abundant section of RNA found in cells ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mitochondrial DNA
Mitochondrial DNA (mtDNA or mDNA) is the DNA located in mitochondria, cellular organelles within eukaryotic cells that convert chemical energy from food into a form that cells can use, such as adenosine triphosphate (ATP). Mitochondrial DNA is only a small portion of the DNA in a eukaryotic cell; most of the DNA can be found in the cell nucleus and, in plants and algae, also in plastids such as chloroplasts. Human mitochondrial DNA was the first significant part of the human genome to be sequenced. This sequencing revealed that the human mtDNA includes 16,569 base pairs and encodes 13 proteins. Since animal mtDNA evolves faster than nuclear genetic markers, it represents a mainstay of phylogenetics and evolutionary biology. It also permits an examination of the relatedness of populations, and so has become important in anthropology and biogeography. Origin Nuclear and mitochondrial DNA are thought to be of separate evolutionary origin, with the mtDNA being derived ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Richard Dell
Richard Kenneth Dell (11 July 1920 – 6 March 2002) was a New Zealand malacologist. Biography Dell was born in Auckland in 1920. As a young boy, he took an interest in shells, collecting them from the shores of Waitematā Harbour. He even managed to start a "museum" in his backyard. He also helped curate the Auckland War Memorial Museum shell collection. Dell studied at Mount Albert Grammar School and later at the Auckland University College. He took a teacher’s course at Auckland Teachers' College, but World War II delayed his plans to become a teacher. He joined the New Zealand Artillery, serving on Nissan Island, the Solomon Islands, Southwest Asia, Egypt, and Italy. He later published several papers on the land snails he had collected in the Solomon Islands. In 1946, he married botanist and schoolteacher Miriam Matthews, and they had four daughters together. His wife continued working after their marriage and became a well-known women's advocate. After the war, D ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Ross Sea
The Ross Sea is a deep bay of the Southern Ocean in Antarctica, between Victoria Land and Marie Byrd Land and within the Ross Embayment, and is the southernmost sea on Earth. It derives its name from the British explorer James Clark Ross who visited this area in 1841. To the west of the sea lies Ross Island and Victoria Land, to the east Roosevelt Island and Edward VII Peninsula in Marie Byrd Land, while the southernmost part is covered by the Ross Ice Shelf, and is about from the South Pole. Its boundaries and area have been defined by the New Zealand National Institute of Water and Atmospheric Research as having an area of . The circulation of the Ross Sea is dominated by a wind-driven ocean gyre and the flow is strongly influenced by three submarine ridges that run from southwest to northeast. The circumpolar deep water current is a relatively warm, salty and nutrient-rich water mass that flows onto the continental shelf at certain locations. The Ross Sea is covered with ice ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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