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Radiospongilla Sceptroides
''Radiospongilla sceptroides'' is a species of freshwater sponge in the family Spongillidae. It was described as ''Spongilla sceptroides'' by Scottish-born Australian zoologist William A. Haswell in 1883, who discovered it growing on submerged wood in a pond in the vicinity of Brisbane. He described it as "Sponge green, encrusting, smooth, moderately elastic, not crumbling." He noted the spicules were fusiform and pointed. It was found growing next to a yellowish freshwater sponge that he described as ''Spongilla botryoides''. A 1968 review of freshwater sponges failed to locate Haswell's original type specimen, so a new one was selected from the Merrika River near Womboyn in New South Wales. Material from New Zealand was described as ''Spongilla rotoitiensis'', but later regarded as ''R. sceptroides''. Yet more material originally classified as this species has been shown to be a different species, '' R. philippinensis''. A bright emerald green in colour and firm and rubbery i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
William Aitcheson Haswell
William Aitcheson Haswell (5 August 1854 – 24 January 1925) was a Scottish-Australian zoologist specialising in crustaceans, winner of the 1915 Clarke Medal. His zoological author abbreviation is Haswell. Taxa authored by him are given in :Taxa named by William Aitcheson Haswell and bthis query __NOTOC__ Early life Haswell was born at Gayfield House, Edinburgh, son of James Haswell, banker, and his wife Margaret, ''née'' Cranston. Haswell studied at the Edinburgh Institution and the University of Edinburgh (M.A., 1877; BSc, 1878; D.Sc., 1887) where he won seven medals, and at the conclusion of his course gained the Bell-Baxter scholarship as the most distinguished natural science student of his year. Amongst his teachers were Thomas Henry Huxley, Archibald Geikie and Charles Wyville Thomson. He qualified for the MA and BSc degrees in 1878, and immediately afterwards, for reasons of health, went on a voyage to Australia. Career Haswell arrived in Sydney in late 1878 and s ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate sexes or mating types can produce fertile offspring, typically by sexual reproduction. Other ways of defining species include their karyotype, DNA sequence, morphology, behaviour or ecological niche. In addition, paleontologists use the concept of the chronospecies since fossil reproduction cannot be examined. The most recent rigorous estimate for the total number of species of eukaryotes is between 8 and 8.7 million. However, only about 14% of these had been described by 2011. All species (except viruses) are given a two-part name, a "binomial". The first part of a binomial is the genus to which the species belongs. The second part is called the specific name or the specific epithet (in botanical nomenclature, also sometimes i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Spongillidae
Spongilidae is a family of sponges that live in freshwater lakes and rivers. The following genera are recognized in the family: * ''Anheteromeyenia'' Schröder, 1927 * ''Corvoheteromeyenia'' Ezcurra de Drago, 1979 * ''Corvospongilla'' Annandale, 1911 * ''Dosilia'' Gray, 1867 * ''Duosclera'' Reiswig & Ricciardi, 1993 * ''Ephydatia'' Lamouroux, 1816 * ''Eunapius (genus), Eunapius'' Gray, 1867 * ''Heteromeyenia'' Potts, 1881 * ''Heterorotula'' Penney & Racek, 1968 * ''Nudospongilla'' Annandale, 1918 * ''Pachyrotula'' Volkmer-Ribeiro & Rützler, 1997 * ''Pectispongilla'' Annandale, 1909 * ''Pottsiela'' Volkmer-Ribeiro, Souza-Machado, Furstenau-Oliveira, Vieira-Soares, 2010 * ''Racekiela'' Bass & Volkmer-Ribeiro, 1998 * ''Radiospongilla'' Penney & Racek, 1968 * ''Sanidastra'' Volkmer-Ribeiro & Watanabe, 1983 * ''Saturnospongilla'' Volkmer-Ribeiro, 1976 * ''Spongilla'' Lamarck, 1816 * ''Stratospongilla'' Annandale, 1909 * ''Trochospongilla'' Vejdovsky, 1888 * ''Umborotula'' Penney & Rac ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fusiform
Fusiform means having a spindle-like shape that is wide in the middle and tapers at both ends. It is similar to the lemon-shape, but often implies a focal broadening of a structure that continues from one or both ends, such as an aneurysm on a blood vessel. Examples * Fusiform, a body shape common to many aquatic animals, characterized by being tapered at both the head and the tail * Fusiform, a classification of aneurysm * Fusiform bacteria (spindled rods, that is, fusiform bacilli), such as the Fusobacteriota * Fusiform cell (biology) * Fusiform face area, a part of the human visual system which seems to specialize in facial recognition * Fusiform gyrus, part of the temporal lobe of the brain * Fusiform muscle, where the fibres run parallel along the length of the muscle * Fusiform neuron, a spindle-shaped neuron A neuron, neurone, or nerve cell is an electrically excitable cell that communicates with other cells via specialized connections called synapses. The neuron i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Radiospongilla Philippinensis
''Radiospongilla'' is a genus of freshwater sponges in the family Spongillidae. It was defined by Penney and Racek in 1968. The type species is '' Radiospongilla sceptroides''. Marine Species. Accessed June 5, 2012. Species The following species are recognised in the family: * '' Radiospongilla amazonensis'' Volkmer & Maciel, 1983 * '' Radiospongilla cantonensis'' (Gee, 1929) * '' Radiospongilla cerebellata'' ...[...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Great Dividing Range
The Great Dividing Range, also known as the East Australian Cordillera or the Eastern Highlands, is a cordillera system in eastern Australia consisting of an expansive collection of mountain ranges, plateaus and rolling hills, that runs roughly parallel to the east coast of Australia and forms the fifth-longest land-based mountain chain in the world, and the longest entirely within a single country. It is mainland Australia's most substantial topographic feature and serves as the definitive watershed for the river systems in eastern Australia, hence the name. The Great Dividing Range stretches more than from Dauan Island in the Torres Strait off the northern tip of Cape York Peninsula, running the entire length of the eastern coastline through Queensland and New South Wales, then turning west across Victoria before finally fading into the Wimmera plains as rolling hills west of the Grampians region. The width of the Range varies from about to over .Shaw, John H., ''Col ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Thirlmere Lakes National Park
The Thirlmere Lakes National Park is a protected national park that is located in the Macarthur region of New South Wales, in eastern Australia. The national park is situated approximately southwest of the Sydney central business district, and just to the west of . It was gazetted in 1972 as Thirlmere Lakes State Park, before being subsequently reclassified as a national park. History The national park is one of the eight protected areas that, in 2000, was inscribed to form part of the UNESCO World Heritagelisted Greater Blue Mountains Area. The Thirlmere Lakes National Park is the most southeasterly and the smallest of the eight protected areas within the World Heritage Site. Crisis Two of the lakes have dried out since the mid 1980s due to removal of groundwater in the region secondary to coal mining at the Tahmoor Colliery. The local community is investigating plans to revive the lakes, which might take decades otherwise. Features The main feature of the park are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gemmule
Gemmules are internal buds found in sponges and are involved in asexual reproduction. It is an asexually reproduced mass of cells, that is capable of developing into a new organism i.e., an adult sponge. Role in asexual reproduction Asexual reproduction in sponges occurs via budding, either by external or internal buds. The internal buds are called gemmules. Only endogenous types of buds develop into new sponges. Characteristics Gemmules are resistant to desiccation (drying out), freezing, and anoxia (lack of oxygen) and can lie around for long periods of time. Gemmules are analogous to a bacterium's endospore and are made up of amoebocytes surrounded by a layer of spicules Spicules are any of various small needle-like anatomical structures occurring in organisms Spicule may also refer to: *Spicule (sponge), small skeletal elements of sea sponges *Spicule (nematode), reproductive structures found in male nematodes ( ... and can survive conditions that would kill adult spo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
