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Tasmanian Whitebait
The Tasmanian whitebait (''Lovettia sealli''), also known as the Australian whitebait or Derwent whitebait, is a semi-anadromous ray-finned fish of the family (biology), family Galaxiidae, found only in Tasmania and southern Victoria (Australia), Victoria, Australia. It is the Monotypic taxon, only species in the genus ''Lovettia''. Naming Scottish naturalist Robert Mackenzie Johnston described the species in 1883 as ''Haplochiton sealii''. Calling it the Derwent smelt, he observed that it appeared in numbers in the upper River Derwent (Tasmania), Derwent near New Norfolk, Tasmania, New Norfolk in October and November. Allan Riverstone McCulloch placed it in the genus ''Lovettia'' in 1915, describing it from specimens collected by a Mr Lovett from the Derwent River. Originally named Tasmanian whitebait the species was renamed Australian whitebait following the discovery of a population in southern Victoria on the Australian mainland in 1993. It is the only species of its genus ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Allan Riverstone McCulloch
Allan Riverstone McCulloch (20 June 1885 – 1 September 1925) was a prominent Australian ichthyologist. Born in Sydney, Australia, McCulloch began his scientific career at the age of 13 as an unpaid assistant to Edgar Ravenswood Waite in the Australian Museum where Waite encouraged McCulloch to study zoology. Three years later, he was employed as a "mechanical assistant", and five years after that, as curator of fishes, a post he held until his death. McCulloch collected and published prolifically; from his first paper in 1906 (published in ''Records of the Australian Museum''), no year passed without his making a contribution to science, and he wrote over 100 original papers in all, many including his own illustrations. McCulloch travelled widely for his collections, including trips to Queensland, Lord Howe Island, New Guinea, the Great Barrier Reef and various Pacific islands. His major research interest was in fish, but he was also given the responsibility of the crusta ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
River Derwent (Tasmania)
The River Derwent, also known as timtumili minanya in palawa kani, is a significant river and tidal estuary in Tasmania, Australia. It begins its journey as a freshwater river in the Central Highlands at Lake St Clair, descending over across a distance of more than . At the settlement of New Norfolk in the Derwent Valley its waters become brackish, flowing through Hobart, the capital city of Tasmania, its seawater estuary eventually empties into Storm Bay and the Tasman Sea. Historically, the banks of the Derwent were covered by forests and frequented by Aboriginal Tasmanians. With the arrival of European settlers, the area saw agricultural development and the construction of dams for hydro-electricity generation during the 20th century. Today, the Derwent's catchment area is characterised by agriculture, forestry, and hydropower generation. It serves as a vital source of water for irrigation and urban supply, notably providing a significant portion of Hobart's water ne ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Fish Of Tasmania
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. The term excludes seawater and brackish water, but it does include non-salty mineral-rich waters, such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of vascular plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fresh water is the water resource that is of the most and immediate use to humans. Fresh water is not always po ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Otolith
An otolith (, ' ear + , ', a stone), also called otoconium, statolith, or statoconium, is a calcium carbonate structure in the saccule or utricle (ear), 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 (ear), utricle of the inner ear, specifically in the Labyrinth (inner ear), 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 gra ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anderson's Inlet
Anderson Inlet (Boonwurrung: ''Toluncan''), sometimes incorrectly referred to as Andersons Inlet, is a shallow and dynamic estuary in South Gippsland, Victoria, Australia where the Tarwin River enters Bass Strait. It forms a almost enclosed bay next to the town of Inverloch, for which it provides a popular and protected beach. At low tide its intertidal mudflats provide important feeding habitat for migratory waders. It is also an important area for recreational fishing. It is named after Samuel Anderson pioneer explorer the first European to settle in the area. Tourism Inverloch is an important tourist town, with visitor numbers swelling in the summer months due to the coastal lifestyle and proximity to Melbourne. Anderson Inlet's popularity is hinged on the almost-enclosed bay, making it a protected beach with safe swimming. At low tide the surf beach can be accessed on foot around the western headland. Anderson Inlet is also a popular recreational boating area with a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Tarwin River
The Tarwin River is a perennial river of the West Gippsland catchment, located in the South Gippsland region of the Australian state of Victoria. The Tarwin River is the primary river system within South Gippsland Shire and has a catchment area of approximately , predominantly rural with small pockets of residential land use. It flows south from the Strzlecki Ranges and discharges in the eastern reaches of Anderson Inlet, a shallow estuary connected to Bass Strait. Course and features Formed by the confluence of the Tarwin River East Branch that drains the southwestern slopes of the Strzlecki Ranges from an elevation of and the Tarwin River West Branch that drains the southern slopes of the Strzlecki Ranges from a northerly point at an elevation of , the Tarwin River rises near the locale of Tarwin, west of . The east branch of the river rises below the locale of Dollar, then heads north through Tarwin East and on to before heading south through a valley, breaking out on to ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Dorsal Fin
A dorsal fin is a fin on the back of most marine and freshwater vertebrates. Dorsal fins have evolved independently several times through convergent evolution adapting to marine environments, so the fins are not all homologous. They are found in most fish, in mammals such as whales, and in extinct ancient marine reptiles such as ichthyosaurs. Most have only one dorsal fin, but some have two or three. Wildlife biologists often use the distinctive nicks and wear patterns which develop on the dorsal fins of whales to identify individuals in the field. The bones or cartilages that support the dorsal fin in fish are called pterygiophores. Functions The main purpose of the dorsal fin is usually to stabilize the animal against rolling and to assist in sudden turns. Some species have further adapted their dorsal fins to other uses. The sunfish uses the dorsal fin (and the anal fin Fins are moving appendages protruding from the body of fish that interact with water to ge ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Norfolk, Tasmania
New Norfolk ( ; Aboriginal Tasmanians#Big River, Leenowwenne/palawa kani: ''Wulawali'') is a river bank, riverside town located on the Derwent River (Tasmania), River Derwent in southeastern Tasmania, Australia. Established in 1807, it is Tasmania’s fourth-oldest European settlement and ranks as the List of towns and cities in Australia by year of settlement, twelfth oldest in Australia. Initially founded by evacuees from Norfolk Island, New Norfolk has a population of 6,153 as of 2021 and serves as the main township of the Derwent Valley, Tasmania, Derwent Valley region. It lies northwest of Hobart, along the Lyell Highway, and is encompassed within the Greater Hobart statistical area. Historically, New Norfolk’s economy has been shaped by agriculture, especially Hops#Cultivation and harvest, hop farming, and the timber industry. The Boyer Mill, a major paper producer, is now the sole manufacturer of newsprint, magazine, and book paper in Australia. Recent years have seen ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monotypic Taxon
In biology, a monotypic taxon is a taxonomic group (taxon) that contains only one immediately subordinate taxon. A monotypic species is one that does not include subspecies or smaller, infraspecific taxa. In the case of Genus, genera, the term "unispecific" or "monospecific" is sometimes preferred. In botanical nomenclature, a monotypic genus is a genus in the special case where a genus and a single species are simultaneously described. Theoretical implications Monotypic taxa present several important theoretical challenges in biological classification. One key issue is known as "Gregg's Paradox": if a single species is the only member of multiple hierarchical levels (for example, being the only species in its genus, which is the only genus in its family), then each level needs a distinct definition to maintain logical structure. Otherwise, the different taxonomic ranks become effectively identical, which creates problems for organizing biological diversity in a hierarchical o ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Robert Mackenzie Johnston
Robert Mackenzie Johnston F.L.S., (27 November 1843 – 20 April 1918)R. L. Wettenhall,Johnston, Robert Mackenzie (1843 - 1918), ''Australian Dictionary of Biography'', Volume 9, MUP, 1983, pp 501-503. Retrieved 8 November 2012 was a Scottish-Australian statistician and scientist. Early life Johnston was born at Petty near Inverness, Scotland, the son of Lachlan Johnstone, a crofter, and his wife Mary, ''née'' Mackenzie. Johnston was educated at the village school where his ability was quickly recognized. Johnson was influenced by the life of Hugh Miller, a stonemason and geologist, whose books were lent to him. Johnston obtained work on the railways, read widely, and studied botany, geology, and chemistry at the Andersonian University under Professors Kennedy, Crosskey, and Penny. Glasgow. Career in Australia Emigrating to Australia in 1870 he was given a position in the accountant's branch of the Launceston and Western District railway. He transferred to the government se ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Australia
Australia, officially the Commonwealth of Australia, is a country comprising mainland Australia, the mainland of the Australia (continent), Australian continent, the island of Tasmania and list of islands of Australia, numerous smaller islands. It has a total area of , making it the list of countries and dependencies by area, sixth-largest country in the world and the largest in Oceania. Australia is the world's flattest and driest inhabited continent. It is a megadiverse countries, megadiverse country, and its size gives it a wide variety of landscapes and Climate of Australia, climates including deserts of Australia, deserts in the Outback, interior and forests of Australia, tropical rainforests along the Eastern states of Australia, coast. The ancestors of Aboriginal Australians began arriving from south-east Asia 50,000 to 65,000 years ago, during the Last Glacial Period, last glacial period. By the time of British settlement, Aboriginal Australians spoke 250 distinct l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Victoria (Australia)
Victoria, commonly abbreviated as Vic, is a States and territories of Australia, state in southeastern Australia. It is the second-smallest state (after Tasmania), with a land area of ; the second-most-populated state (after New South Wales), with a population of over 7 million; and the most densely populated state in Australia (30.6 per km2). Victoria's economy is the List of Australian states and territories by gross state product, second-largest among Australian states and is highly diversified, with service sectors predominating. Victoria is bordered by New South Wales to the north and South Australia to the west and is bounded by the Bass Strait to the south (with the exception of a small land border with Tasmania located along Boundary Islet), the Southern Ocean to the southwest, and the Tasman Sea (a marginal sea of the South Pacific Ocean) to the southeast. The state encompasses a range of climates and geographical features from its temperate climate, temperate coa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
