|
Appendicularia (animal Genus)
''Appendicularia'' is a genus of larvaceans in the family Fritillariidae. History The genus name ''Appendicularia'' was originally coined by Chamisso and Eysenhardt in 1821, naming the first discovered larvacean ''Appendicularia flagellum''. However, the lack of an accurate description made it a ''nomen nudum'', leading to it being reused by Hermann Fol for the species ''Appendicularia sicula''. Description ''Appendicularia'' is relatively small in comparison to other larvaceans, with an adult body length of around 0.4 mm and a tail length of around 1.1 mm in ''A. sicula''. The body is flattened in its front half, and bulged in its posterior half. The house is ellipsoidal, measuring around 2.6 mm in length. Distribution The first description of ''Appendicularia sicula'' was made from specimens found near Messina, Italy. Since then, it has also been found in low-depth waters near the coasts of the Japanese islands of Kyushu and Hokkaido is the list of ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Appendicularia Sicula
Appendicularia may refer to: * ''Appendicularia'' (plant), a genus in the plant family Melastomataceae * Larvacean Larvaceans, copelates or appendicularians, class Appendicularia, are solitary, free-swimming tunicates found throughout the world's oceans. While larvaceans are filter feeders like most other tunicates, they keep their tadpole-like shape as adu ..., an animal of the class Appendicularia in the subphylum Tunicata ** ''Appendicularia'' (animal genus), a genus in the larvacean family Fritillariidae {{Taxonomy disambiguation ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larvacean
Larvaceans, copelates or appendicularians, class Appendicularia, are solitary, free-swimming tunicates found throughout the world's oceans. While larvaceans are filter feeders like most other tunicates, they keep their tadpole-like shape as adults, with the notochord running through the tail. They can be found in the pelagic zone, specifically in the photic zone, or sometimes deeper. They are transparent planktonic animals, usually ranging from to in body length including the tail, although giant larvaceans can reach up to in length. Larvaceans are known for the large houses they build around their bodies to assist in filter-feeding. Secreted from mucus and cellulose, these structures often comprise several layers of filters and can reach up to ten times their body length. In some genera like '' Oikopleura'', houses are built and discarded every few hours, with sinking houses playing a key role in the oceanic carbon cycle. History The study of larvaceans began with the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fritillariidae
Fritillariidae is a family of tunicates belonging to the order Copelata. Genera Fritillariidae comprises three genera, divided into two subfamilies. While the trunk anatomy differs between the genera, they share a similar arrangement of house-producing cells (oikoplasts) over the midline of the pharyngeal trunk, distinguishing them from the Oikopleuridae. * Appendiculariinae Seeliger, 1895 ** ''Appendicularia'' Fol, 1874 * Fritillariinae Seeliger, 1895 ** ''Fritillaria ''Fritillaria'' (fritillaries) is a genus of spring flowering herbaceous bulbous perennial plants in the lily family (biology), family (Liliaceae). The type species, ''Fritillaria meleagris'', was first described in Europe in 1571, while other ...'' Fol, 1872 ** '' Tectillaria'' Lohmann, 1926 References Appendicularia Tunicate families {{Tunicata-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nomen Nudum
In Taxonomy (biology), taxonomy, a ''nomen nudum'' ('naked name'; plural ''nomina nuda'') is a designation which looks exactly like a scientific name of an organism, and may have originally been intended to be one, but it has not been published with an adequate description. This makes it a "bare" or "naked" name, which cannot be accepted as it stands. A largely equivalent but much less frequently used term is ''nomen tantum'' ("name only"). Sometimes, "''nomina nuda''" is erroneously considered a synonym for the term "unavailable names". However, not all unavailable names are ''nomina nuda'' which applies to published names, ''i.e.'' any published name that does not fulfill the requirements of Article 12 (if published before 1931) or Article 13 (if published after 1930). In zoology According to the rules of zoological nomenclature a ''nomen nudum'' is unavailable name, unavailable; the glossary of the ''International Code of Zoological Nomenclature'' gives this definition: And ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hermann Fol
Hermann Fol (23 July 1845, Saint-Mandé – March 1892) was a Swiss zoologist and has been considered a pioneer of embryology. He studied under Édouard Claparède and Ernst Haeckel and took a special interest in the fertilization and embryology of echinoderms. He also innovated scientific devices, examined the safety of drinking water and was interested in rabies vaccinations. He was involved in establishing a marine biology laboratory at Villefranche-sur-Me and vanished at sea aboard a small yacht, the ''Aster,'' which left on 13 March from Le Havre and he was last known living on 17th March. The boat was later discovered off the coast of west Africa with nobody aboard. Life and work Fol was born in a wealthy banking family in Geneva then living at St. Mandé, near Paris where his father Etienne-Joseph worked. His mother died when he was six years old and he went to secondary school in Geneva where he was influenced by Edouard Claparède and François Jules Pictet de la R ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Larvacean
Larvaceans, copelates or appendicularians, class Appendicularia, are solitary, free-swimming tunicates found throughout the world's oceans. While larvaceans are filter feeders like most other tunicates, they keep their tadpole-like shape as adults, with the notochord running through the tail. They can be found in the pelagic zone, specifically in the photic zone, or sometimes deeper. They are transparent planktonic animals, usually ranging from to in body length including the tail, although giant larvaceans can reach up to in length. Larvaceans are known for the large houses they build around their bodies to assist in filter-feeding. Secreted from mucus and cellulose, these structures often comprise several layers of filters and can reach up to ten times their body length. In some genera like '' Oikopleura'', houses are built and discarded every few hours, with sinking houses playing a key role in the oceanic carbon cycle. History The study of larvaceans began with the d ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Messina
Messina ( , ; ; ; ) is a harbour city and the capital city, capital of the Italian Metropolitan City of Messina. It is the third largest city on the island of Sicily, and the 13th largest city in Italy, with a population of 216,918 inhabitants in the city proper and about 595,948 in the metropolitan city as of 2025. It is located near the northeast corner of Sicily, at the Strait of Messina and it is an important access terminal to Calabria region, Villa San Giovanni, Reggio Calabria on the mainland. Founded by the Sicels with the name of ''Zancle'' in 757 BC, which in Siculian, their language meant sickle, it was repopulated by Greek colonisation, Greek colonists of Magna Graecia and renamed ''Messana''. The city was renamed ''Messina'' in the Byzantine Empire, Byzantine age. It was an important Roman Empire, Roman, and then Byzantine Empire, Greek-Byzantine city, but in 843 it was completely destroyed by the Arabs. Almost abandoned during the Islamic period, it rose again i ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Italy
Italy, officially the Italian Republic, is a country in Southern Europe, Southern and Western Europe, Western Europe. It consists of Italian Peninsula, a peninsula that extends into the Mediterranean Sea, with the Alps on its northern land border, as well as List of islands of Italy, nearly 800 islands, notably Sicily and Sardinia. Italy shares land borders with France to the west; Switzerland and Austria to the north; Slovenia to the east; and the two enclaves of Vatican City and San Marino. It is the List of European countries by area, tenth-largest country in Europe by area, covering , and the third-most populous member state of the European Union, with nearly 59 million inhabitants. Italy's capital and List of cities in Italy, largest city is Rome; other major cities include Milan, Naples, Turin, Palermo, Bologna, Florence, Genoa, and Venice. The history of Italy goes back to numerous List of ancient peoples of Italy, Italic peoples—notably including the ancient Romans, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Japan
Japan is an island country in East Asia. Located in the Pacific Ocean off the northeast coast of the Asia, Asian mainland, it is bordered on the west by the Sea of Japan and extends from the Sea of Okhotsk in the north to the East China Sea in the south. The Japanese archipelago consists of four major islands—Hokkaido, Honshu, Shikoku, and Kyushu—and List of islands of Japan, thousands of smaller islands, covering . Japan has a population of over 123 million as of 2025, making it the List of countries and dependencies by population, eleventh-most populous country. The capital of Japan and List of cities in Japan, its largest city is Tokyo; the Greater Tokyo Area is the List of largest cities, largest metropolitan area in the world, with more than 37 million inhabitants as of 2024. Japan is divided into 47 Prefectures of Japan, administrative prefectures and List of regions of Japan, eight traditional regions. About three-quarters of Geography of Japan, the countr ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Kyushu
is the third-largest island of Japan's Japanese archipelago, four main islands and the most southerly of the four largest islands (i.e. excluding Okinawa Island, Okinawa and the other Ryukyu Islands, Ryukyu (''Nansei'') Ryukyu Islands, Islands). In the past, it has been known as , and . The historical regional name referred to Kyushu and its surrounding islands. Kyushu has a land area of and a population of 14,311,224 in 2018. In ancient times, there is a theory that Kyushu was home to its own independent dynasty, where a unique, southern-influenced culture and tradition distinct from that of Honshu flourished. In the 8th-century Taihō Code reforms, Dazaifu (government), Dazaifu was established as a special administrative term for the region. Geography The island is mountainous, and Japan's most active volcano, Mount Aso at , is on Kyūshū. There are many other signs of tectonic activity, including numerous areas of hot springs. The most famous of these are in Beppu, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hokkaido
is the list of islands of Japan by area, second-largest island of Japan and comprises the largest and northernmost prefectures of Japan, prefecture, making up its own list of regions of Japan, region. The Tsugaru Strait separates Hokkaidō from Honshu; the two islands are connected by railway via the Seikan Tunnel. The largest city on Hokkaido is its capital, Sapporo, which is also its only cities designated by government ordinance of Japan, ordinance-designated city. Sakhalin lies about to the north of Hokkaidō, and to the east and northeast are the Kuril Islands, which are administered by Russia, though the four most southerly are Kuril Islands dispute, claimed by Japan. The position of the island on the northern end of the archipelago results in a colder climate, with the island seeing significant snowfall each winter. Despite the harsher climate, it serves as an agricultural breadbasket for many crops. Hokkaido was formerly known as ''Ezo'', ''Yezo'', ''Yeso'', or ''Yes ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
