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Amphiprion Leucokranos
''Amphiprion leucokranos'' (White bonnet anemonefish) is a naturally occurring hybrid anemonefish found in the western central Pacific Ocean. Like all anemonefishes it forms a symbiotic mutualism with sea anemones and is unaffected by the stinging tentacles of the host anemone. It is a sequential hermaphrodite with a strict dominance hierarchy, features which are critical to the direction of gene flow. Description The body of ''A. leucokranosis'' is orange or light brown and with a white head bar and a white mark on the top of its head, giving rise to its common name of white bonnet anemonefish. The head band may be continuous or not. They have 9 dorsal spines, 2 anal spines, 18-19 dorsal soft rays and 13-14 anal soft rays. They reach a maximum length of . Hybridisation There has been a long-standing theory that ''A. leucokranosis'' was a naturally occurring hybrid between ''A. chrysopterus'' and ''A. sandaracinos'', with the fish being experimentally created in captivity ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gerald R
Gerald is a male Germanic given name meaning "rule of the spear" from the prefix ''ger-'' ("spear") and suffix ''-wald'' ("rule"). Variants include the English given name Jerrold, the feminine nickname Jeri and the Welsh language Gerallt and Irish language Gearalt. Gerald is less common as a surname. The name is also found in French as Gérald. Geraldine is the feminine equivalent. Given name People with the name Gerald include: Politicians * Gerald Boland, Ireland's longest-serving Minister for Justice * Gerald Ford, 38th President of the United States * Gerald Gardiner, Baron Gardiner, Lord Chancellor from 1964 to 1970 * Gerald Häfner, German MEP * Gerald Klug, Austrian politician * Gerald Lascelles (other), several people * Gerald Nabarro, British Conservative politician * Gerald S. McGowan, US Ambassador to Portugal * Gerald Wellesley, 7th Duke of Wellington, British diplomat, soldier, and architect Sports * Gerald Asamoah, Ghanaian-born German football player * ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Backcrossing
Backcrossing is a crossing of a hybrid with one of its parents or an individual genetically similar to its parent, to achieve offspring with a genetic identity closer to that of the parent. It is used in horticulture, animal breeding, and production of gene knockout organisms. Backcrossed hybrids are sometimes described with acronym "BC"; for example, an F1 hybrid crossed with one of its parents (or a genetically similar individual) can be termed a BC1 hybrid, and a further cross of the BC1 hybrid to the same parent (or a genetically similar individual) produces a BC2 hybrid. Plants Advantages * If the recurrent parent is an elite genotype, at the end of the backcrossing programme, an elite genotype is recovered. * As no "new" recombination results, the elite combination is not lost. Disadvantages * It works poorly for quantitative traits. * It is more restricted for recessive traits. * In practice, sections of genome from the nonrecurrent parents are often still present and c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heteractis Crispa
The sebae anemone (''Heteractis crispa''), also known as leathery sea anemone, long tentacle anemone, or purple tip anemone, is a species of sea anemone belonging to the family Stichodactylidae and native to the Indo-Pacific area. It was first described in 1834 by Wilhelm Hemprich and Christian Gottfried Ehrenberg as ''Actinia crispa''. The name accepted by the World Register of Marine Species is ''Radianthus crispa''. Description The sebae anemone is characterized by a flared oral disc which reaches between 20 and 50 cm in diameter and with multiple and long tentacles measuring 10 to 15 cm. These tentacles have rounded tip and the end is often colored with a purple or blue spot. The column, external structure of an anemone visible when the animal is closed, is gray in color and dotted with sticky whitish "warts". The sea anemone, being member of the Hexacorallia, usually carries a number of tentacles multiple of six and they are positioned in concentric circles. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kimbe Bay
Kimbe Bay is a large bay in West New Britain Province, off the northern coast of New Britain, Papua New Guinea, at . Kimbe Bay is an important biodiversity hotspot. 60 percent of the coral species of the entire Indo-Pacific region live here. Kimbe Bay is the home of more than 860 coral reef fish species. Because of a massive die-off of coral worldwide due to pollution, human activities, and global warming, Kimbe Bay has become increasingly important, since it is seen as one of the last holdouts for coral should the degradation continue. Efforts are currently underway to limit the human impact on the bay. Due to its beauty it is also a popular diving Diving most often refers to: * Diving (sport), the sport of jumping into deep water * Underwater diving, human activity underwater for recreational or occupational purposes Diving or Dive may also refer to: Sports * Dive (American football), a ... site. References External links Diving in Kimbe Bay Bays of Papua New Guin ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Stichodactyla Mertensii
''Stichodactyla mertensii'', commonly known as Mertens' carpet sea anemone, is a species of sea anemones in the family Stichodactylidae. It is regarded as the largest sea anemone with a diameter of over , the next largest being ''Heteractis magnifica'', which has longer tentacles. This species has an oral disc that can be described as more ovoid than circular that contours to the surrounding substrate and is attached to the substrate by adhesive verrucae, which are wart-like projections. Its blunt or pointed tentacles are uniformly shaped, and are only about long. It contains obligate symbiotic zooxanthellae, and is a host to around half the species of anemonefish and one damselfish, ''Dascyllus trimaculatus''. Distribution ''S. mertensii'' is found on rocky or coral substrate and is widespread throughout the tropical and subtropical waters of the Indo-Pacific area from Mauritius to Fiji and from the Ryukyu Islands of southern Japan to Australia. While this species can be c ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Heteractis Magnifica
''Heteractis magnifica'', also known by the common names magnificent sea anemone or Ritteri anemone, is a species of sea anemone belonging to the Stichodactylidae family native to the Indo-Pacific area. Description The magnificent sea anemone is characterized by a flared oral disc, which reaches between 20 and 50 cm in diameter, but in some specimens, this can reach 1 m. The oral disc, the base of the tentacles, and the oral orifice have the same color, going from light beige to white. The numerous tentacles exceed 8 cm long. The sea anemone, being a member of the Hexacorallia, usually carries tentacles in multiples of six that are positioned in concentric circles. Their tips are fingered and often lighter in coloration than the tentacle body and are sometimes vividly colored. Its specific scientific name, ''magnifica'', and its vernacular name come from the bright color of the column, which is the visible outer structure when the animal retracts, and these range from ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sebae Anemone
The sebae anemone (''Heteractis crispa''), also known as leathery sea anemone, long tentacle anemone, or purple tip anemone, is a species of sea anemone belonging to the family Stichodactylidae and native to the Indo-Pacific area. It was first described in 1834 by Wilhelm Hemprich and Christian Gottfried Ehrenberg as ''Actinia crispa''. The name accepted by the World Register of Marine Species is ''Radianthus crispa''. Description The sebae anemone is characterized by a flared oral disc which reaches between 20 and 50 cm in diameter and with multiple and long tentacles measuring 10 to 15 cm. These tentacles have rounded tip and the end is often colored with a purple or blue spot. The column, external structure of an anemone visible when the animal is closed, is gray in color and dotted with sticky whitish "warts". The sea anemone, being member of the Hexacorallia, usually carries a number of tentacles multiple of six and they are positioned in concentric circles. The ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Solomon Islands
Solomon Islands is an island country consisting of six major islands and over 900 smaller islands in Oceania, to the east of Papua New Guinea and north-west of Vanuatu. It has a land area of , and a population of approx. 700,000. Its capital, Honiara, is located on the largest island, Guadalcanal. The country takes its name from the wider area of the Solomon Islands (archipelago), which is a collection of Melanesian islands that also includes the Autonomous Region of Bougainville (currently a part of Papua New Guinea), but excludes the Santa Cruz Islands. The islands have been settled since at least some time between 30,000 and 28,800 BCE, with later waves of migrants, notably the Lapita people, mixing and producing the modern indigenous Solomon Islanders population. In 1568, the Spanish navigator Álvaro de Mendaña was the first European to visit them. Though not named by Mendaña, it is believed that the islands were called ''"the Solomons"'' by those who later receiv ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Britain
New Britain ( tpi, Niu Briten) is the largest island in the Bismarck Archipelago, part of the Islands Region of Papua New Guinea. It is separated from New Guinea by a northwest corner of the Solomon Sea (or with an island hop of Umboi the Dampier and Vitiaz Straits) and from New Ireland by St. George's Channel. The main towns of New Britain are Rabaul/Kokopo and Kimbe. The island is roughly the size of Taiwan. While the island was part of German New Guinea, it was named Neupommern ("New Pomerania"). In common with most of the Bismarcks it was largely formed by volcanic processes, and has active volcanoes including Ulawun (highest volcano nationally), Langila, the Garbuna Group, the Sulu Range, and the volcanoes Tavurvur and Vulcan of the Rabaul caldera. A major eruption of Tavurvur in 1994 destroyed the East New Britain provincial capital of Rabaul. Most of the town still lies under metres of ash, and the capital has been moved to nearby Kokopo. Geography New Britain e ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
D'Entrecasteaux Islands
D'Entrecasteaux Islands () are situated near the eastern tip of New Guinea in the Solomon Sea in Milne Bay Province of Papua New Guinea. The group spans a distance of , has a total land area of approximately and is separated from the Papua New Guinea mainland by the wide Ward Hunt Strait in the north and the wide Goschen Strait in the south. D'Entrecasteaux Islands show signs of volcanism. People The inhabitants of D'Entrecasteaux Islands are indigenous subsistence horticulturalists living in small, traditional settlements. People of this area produced and traded clay pots as well as participated in the Kula exchange of shell valuables, travelling widely to other islands on sea-going sailing canoes. During the more recent past, people harvested copra, trochus and pearl-shells and some timber for cash. Alluvial gold mining was once important and in recent years the area has been subject to mineral exploration. Description The three principal islands, from northwest to sou ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Manus Island
Manus Island is part of Manus Province in northern Papua New Guinea and is the largest of the Admiralty Islands. It is the fifth-largest island in Papua New Guinea, with an area of , measuring around . Manus Island is covered in rugged jungles which can be broadly described as lowland tropical rain forest. The highest point on Manus Island is Mt. Dremsel, above sea level at the centre of the south coast. Manus Island is volcanic in origin and probably broke through the ocean's surface in the late Miocene, 8 to 10 million years ago. The substrate of the island is either directly volcanic or from uplifted coral limestone. Lorengau, the capital of Manus Province, is located on the island. Momote Airport, the terminal for Manus Province, is located on nearby Los Negros Island. A bridge connects Los Negros Island to Manus Island and the provincial capital of Lorengau. In the 2000 census, the whole Manus Province had a population of 50,321. The Austronesian Manus languages are sp ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
New Guinea
New Guinea (; Hiri Motu Hiri Motu, also known as Police Motu, Pidgin Motu, or just Hiri, is a language of Papua New Guinea, which is spoken in surrounding areas of Port Moresby (Capital of Papua New Guinea). It is a simplified version of Motu, from the Austronesian l ...: ''Niu Gini''; id, Papua, or , historically ) is the List of islands by area, world's second-largest island with an area of . Located in Oceania in the southwestern Pacific Ocean, the island is separated from Mainland Australia, Australia by the wide Torres Strait, though both landmasses lie on the same continental shelf. Numerous smaller islands are located to the west and east. The eastern half of the island is the major land mass of the independent state of Papua New Guinea. The western half, known as Western New Guinea, forms a part of Indonesia and is organized as the provinces of Papua (province), Papua, Central Papua, Highland Papua, South Papua, Southwest Papua, and West Papua (province), West ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
