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Eubranchus Olivaceus
''Eubranchus olivaceus'' is a species of sea slug or nudibranch, a marine gastropod mollusc in the family Eubranchidae.Caballer, M.; Rosenberg, G. (2015)''Eubranchus olivaceus'' (O'Donoghue, 1922).In: MolluscaBase (2015). Accessed through: World Register of Marine Species on 2016-01-01. Distribution This species was described from Jesse Island and Brandon Island, Departure Bay, and the biological research station at Nanaimo, Vancouver Island, Canada. It is considered by some authors to be a synonym of the North Atlantic species ''Eubranchus rupium''.McDonald, G., (2015''Eubranchus rupium''.Intertidal Invertebrates of the Monterey Bay Area, California. Biology In the original description ''Eubranchus olivaceus'' is reported to feed on '' Obelia longissima''. It is also reported to feed on the hydroids ''Laomedea flexuosa ''Laomedea flexuosa'' is a species of cnidarians belonging to the family Campanulariidae. It is native to Europe and Northern America Northern Ameri ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Charles Henry O'Donoghue
Charles Henry O'Donoghue FRSE FZS (23 September 1885 – 28 November 1961) was an English zoologist who studied molluscs, a malacologist. His publications mostly deal with sea slugs and he also named a number of Bryozoans. A collection of over 700 items left to the University of Reading is known as the O'Donoghue Collection. Life He was born in Bedfordshire on 23 September 1885 the son of Charles Henry O'Donoghue. He studied zoology at the University of London. From 1918 to 1927 he was Professor of Zoology at the University of Manitoba. From 1923 he additionally acted as Director of the Marine Biological Station at Nanaimo on Vancouver Island. He also helped to establish the Prince Rupert Island and Cultus Lake research stations. In 1928 he became a Reader in natural history at the University of Edinburgh. In 1928 he was elected a Fellow of the Royal Society of Edinburgh. His proposers were James Hartley Ashworth, John Stephenson, Robert Stewart MacDougall and James Ritchie. H ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Vancouver Island
Vancouver Island is an island in the northeastern Pacific Ocean and part of the Canadian Provinces and territories of Canada, province of British Columbia. The island is in length, in width at its widest point, and in total area, while are of land. The island is the largest by area and the most populous along the west coasts of the Americas. The southern part of Vancouver Island and some of the nearby Gulf Islands are the only parts of British Columbia or Western Canada to lie south of the 49th parallel north, 49th parallel. This area has one of the warmest climates in Canada, and since the mid-1990s has been mild enough in a few areas to grow Mediterranean Sea, Mediterranean crops such as olives and lemons. The population of Vancouver Island was 864,864 as of 2021. Nearly half of that population (~400,000) live in the metropolitan area of Greater Victoria, the capital city of British Columbia. Other notable cities and towns on Vancouver Island include Nanaimo, Port Alberni, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obelia
''Obelia'' is a genus of hydrozoans, a class of mainly marine and some freshwater animal species that have both polyp and medusa stages in their life cycle. Hydrozoa belongs to the phylum Cnidaria, which are aquatic (mainly marine) organisms that are relatively simple in structure with a diameter around 1mm. There are currently 120 known species, with more to be discovered. These species are grouped into three broad categories: ''O. bidentada'', ''O. dichotoma'', and ''O. geniculata''. ''O. longissima'' was later accepted as a legitimate species, but taxonomy regarding the entire genus is debated over. ''Obelia'' is also called sea fur. ''Obelia'' has a worldwide distribution except the high-Arctic and Antarctic seas. and a stage of ''Obelia'' species are common in coastal and offshore plankton around the world.Cornelius, P.F.S., 1995b. North-West European thecate hydroids and their Medusae. Part 2. Synopses of the British Fauna (New Series), No 50. ''Obelia'' are usually fo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Laomedea Flexuosa
''Laomedea flexuosa'' is a species of cnidarians belonging to the family Campanulariidae. It is native to Europe and Northern America Northern America is the northernmost subregion of North America. The boundaries may be drawn slightly differently. In one definition, it lies directly north of Middle America (including the Caribbean and Central America).Gonzalez, Joseph. 20 .... References Campanulariidae {{Leptothecata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydroid (zoology)
Hydroids are a life stage for most animals of the class Hydrozoa, small predators related to jellyfish. Some hydroids such as the freshwater '' Hydra'' are solitary, with the polyp attached directly to the substrate. When these produce buds, they become detached and grow on as new individuals. The majority of hydroids are colonial. The original polyp is anchored to a solid substrate and forms a bud which remains attached to its parent. This in turn buds and in this way a stem is formed. The arrangement of polyps and the branching of the stem is characteristic of the species. Some species have the polyps budding directly off the stolon which roots the colony. The polyps are connected by epidermis which surrounds a gastrovascular cavity. The epidermis secretes a chitinous skeleton which supports the stem and in some hydroids, the skeleton extends into a cup shape surrounding the polyp. Most of the polyps are gastrozooids or feeding polyps, but some are specialised reprodu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Obelia Longissima
''Obelia longissima'' is a colonial species of hydrozoan in the order Leptomedusae. Its hydroid form grows as feathery stems resembling seaweed from a basal stolon. It is found in many temperate and cold seas world-wide but is absent from the tropics. Description The sessile colonial stage of ''Obelia longissima'' is the most long-lived and the most easily observed of its life stages. The hydroid looks superficially like fronds of seaweed. It has a basal stolon growing in close proximity with the substrate. Out of this grow fragile, flexible stems up to high each with short side branches. As the stolon grows, new branches develop and the older ones are reabsorbed so the colony moves across the substrate. When the availability of food is high, further upright branches develop but when it is low, most growth takes place by way of stolon elongation and branching. The stems have dark-coloured, usually straight internodes between chitinous chambers called hydrothecae which are shape ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Eubranchus Rupium
''Eubranchus rupium'', the green balloon aeolid, is a species of sea slug or nudibranch, a marine gastropod mollusc in the family Eubranchidae. Distribution This species was described from Greenland. It is reported from the North Atlantic Ocean as far south as the Netherlands and is considered to be a circumpolar species. It is considered by most authors to be a synonym of '' Eubranchus olivaceus'' and is reported as far south as Monterey Bay, California on the Pacific Ocean coast of North America North America is a continent in the Northern Hemisphere and almost entirely within the Western Hemisphere. It is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South America and the Car ....McDonald, G., (2015''Eubranchus rupium''.Intertidal Invertebrates of the Monterey Bay Area, California.Rudman, W.B., 2003 (July 14''Eubranchus rupium'' (Moller, 1842). n/nowiki> Sea Slug Forum. Australian Museum, Sydney.Goddard, J. H. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
North Atlantic
The Atlantic Ocean is the second-largest of the world's five oceans, with an area of about . It covers approximately 20% of Earth's surface and about 29% of its water surface area. It is known to separate the "Old World" of Africa, Europe and Asia from the "New World" of the Americas in the European perception of the World. The Atlantic Ocean occupies an elongated, S-shaped basin extending longitudinally between Europe and Africa to the east, and North and South America to the west. As one component of the interconnected World Ocean, it is connected in the north to the Arctic Ocean, to the Pacific Ocean in the southwest, the Indian Ocean in the southeast, and the Southern Ocean in the south (other definitions describe the Atlantic as extending southward to Antarctica). The Atlantic Ocean is divided in two parts, by the Equatorial Counter Current, with the North(ern) Atlantic Ocean and the South(ern) Atlantic Ocean split at about 8°N. Scientific explorations of the Atlantic ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Canada
Canada is a country in North America. Its ten provinces and three territories extend from the Atlantic Ocean to the Pacific Ocean and northward into the Arctic Ocean, covering over , making it the world's second-largest country by total area. Its southern and western border with the United States, stretching , is the world's longest binational land border. Canada's capital is Ottawa, and its three largest metropolitan areas are Toronto, Montreal, and Vancouver. Indigenous peoples have continuously inhabited what is now Canada for thousands of years. Beginning in the 16th century, British and French expeditions explored and later settled along the Atlantic coast. As a consequence of various armed conflicts, France ceded nearly all of its colonies in North America in 1763. In 1867, with the union of three British North American colonies through Confederation, Canada was formed as a federal dominion of four provinces. This began an accretion of provinces an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nanaimo
Nanaimo ( ) is a city on the east coast of Vancouver Island, in British Columbia, Canada. As of the Canada 2021 Census, 2021 census, it had a population of 99,863, and it is known as "The Harbour City." The city was previously known as the "Hub City," which was attributed to its original layout design, whose streets radiated from the shoreline like the spokes of a wagon wheel, and to its central location on Vancouver Island. Nanaimo is the headquarters of the Regional District of Nanaimo. Nanaimo is served by the coast-spanning Island Highway, the Island Rail Corridor, the BC Ferries system, and a local airport. History The Indigenous peoples of the area that is now known as Nanaimo are the Snuneymuxw. An anglicised spelling and pronunciation of that word gave the city its current name. The first Europeans known to reach Nanaimo Harbour were members of the 1791 Spanish voyage of Juan Carrasco (explorer), Juan Carrasco, under the command of Francisco de Eliza. They gave it ... [...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] |
Departure Bay, British Columbia
Departure Bay is a bay in central Nanaimo, British Columbia, on the east coast of Vancouver Island. The surrounding neighbourhood is also referred to as "Departure Bay" —once a settlement of its own, it was amalgamated into the City of Nanaimo in the 1970s. __TOC__ Geography The bay is framed to the west by Vancouver Island and to the south-east by Saysutshun (formerly Newcastle Island), a provincial marine park with a long history of mining, quarrying, herring salteries, and tourism. Jesse Island () and the smaller Brandon Islands are located near the northern shore of the bay. Both islands, though quite small, have varied histories; Brandon Island being notable for a history of Japanese fish canneries and salteries. In 1853 both islands were named after sailors on HMS Virago. Snake Island is a located just outside the mouth of the bay. The "Departure Bay" neighbourhood surrounds most of the bay; though the north-eastern shoreline is referred to as Stephenson Point, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
