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Callinectes Marginatus
''Callinectes marginatus'', known as the "sharptooth swimcrab" or "marbled swimcrab", is a species of swimming crab in the genus ''Callinectes''. Description Its carapace bears nine spines behind each eye, the last of which is around twice the length of the previous one, making the whole carapace around wide. Distribution and ecology Although the name ''Callinectes marginatus'' was used by Mary J. Rathbun and others to also cover animals now referred to the species '' C. larvatus'' and '' C. diacanthus'', ''C. marginatus'' is now used only for a species found from the Cape Verde Islands and Nouadhibou, Mauritania to Angola. ''C. marginatus'' appears to be entirely marine, unlike some of its congeners, although there are records from the estuaries of the Congo River and the Hwini River. The crabs dig holes around wide in mudflat Mudflats or mud flats, also known as tidal flats or, in Ireland, slob or slobs, are coastal wetlands that form in intertidal areas where sediments h ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Alphonse Milne-Edwards
Alphonse Milne-Edwards (Paris, 13 October 1835 – Paris, 21 April 1900) was a French mammalogist, ornithologist, and carcinologist. He was English in origin, the son of Henri Milne-Edwards and grandson of Bryan Edwards, a Jamaican planter who settled at Bruges (then in France). Milne-Edwards obtained a medical degree in 1859 and became assistant to his father at the ' in 1876. He became the director of the in 1891, devoting himself especially to fossil birds and deep-sea exploration. In 1881, he undertook a survey of the Gulf of Gascony with Léopold de Folin and worked aboard the ''Travailleur'' and the '' Talisman,'' researching the seas off the Canary Islands, the Cape Verde Islands, and the Azores. For this, he received a gold medal of the Royal Geographical Society. His major ornithological works include ' published in two parts in 1867 and 1872, ' 1866–1874 and ' 1868–1874. His study of fossils led to the discovery of tropical birds such as trogons and parrots fro ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mauritania
Mauritania (; ar, موريتانيا, ', french: Mauritanie; Berber languages, Berber: ''Agawej'' or ''Cengit''; Pulaar language, Pulaar: ''Moritani''; Wolof language, Wolof: ''Gànnaar''; Soninke language, Soninke:), officially the Islamic Republic of Mauritania ( ar, الجمهورية الإسلامية الموريتانية), is a sovereign country in West Africa. It is bordered by the Atlantic Ocean to the west, Western Sahara to Mauritania–Western Sahara border, the north and northwest, Algeria to Algeria–Mauritania border, the northeast, Mali to Mali–Mauritania border, the east and southeast, and Senegal to Mauritania–Senegal border, the southwest. Mauritania is the 11th-largest country in Africa and the 28th-largest in the world, and 90% of its territory is situated in the Sahara. Most of its population of 4.4 million lives in the temperate south of the country, with roughly one-third concentrated in the Capital city, capital and largest city, Nouakchott, loca ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Portunoidea
__NOTOC__ Portunoidea is a superfamily of crabs that includes the family Portunidae, the swimming crabs. Which other crab families are also placed here is a matter of some contention, and may be revised following molecular phylogenetic analyses. Description Their rather flat and smooth carapace is usually wider than long and of hexagonal, subhexagonal, rectangular, or transversely ovate shape. It is usually widest between the hindmost spines of the forward rim; there may be up to 9 pairs of these spines, with a few smaller ones right above the head, but they are missing altogether in some species. In some, the first maxilliped's endopod is lobed, forming the characteristic portunid lobe. The chelipeds are usually robust, and in some the last pereiopod pair has ovate dactyls. The sutures of the sternum between segments 4 to 8 are usually incomplete, and in the Portunidae, the eighth sternite is usually visible if seen from below and has a penial groove. In males, the abd ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Aquatic Botany
''Aquatic Botany'' ("An International Scientific Journal dealing with Applied and Fundamental Research on Submerged, Floating and Emergent Plants in Marine and Freshwater Ecosystems") is a peer-reviewed scientific journal covering research on structure, function, dynamics, and classification of plant-dominated aquatic communities and ecosystems, as well as molecular, biochemical, and physiological aspects of aquatic plants. It publishes fundamental as well as applied research. The journal was established in 1975 by Cees den Hartog, who still serves as consulting editor. It is published by Elsevier and the editors-in-chief are E.M. Gross (University of Lorraine), Thomas Wernberg (University of Western Australia) and Brigitta van Tussenbroek (National Autonomous University of Mexico). Abstracting and indexing The journal is abstracted and indexed in Aquatic Sciences and Fisheries Abstracts, BIOSIS Previews, Current Contents/Agriculture, Biology & Environmental Sciences, EMBiology, a ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Mudflat
Mudflats or mud flats, also known as tidal flats or, in Ireland, slob or slobs, are coastal wetlands that form in intertidal areas where sediments have been deposited by tides or rivers. A global analysis published in 2019 suggested that tidal flat ecosystems are as extensive globally as mangroves, covering at least of the Earth's surface. / They are found in sheltered areas such as bays, bayous, lagoons, and estuaries; they are also seen in freshwater lakes and salty lakes (or inland seas) alike, wherein many rivers and creeks end. Mudflats may be viewed geologically as exposed layers of bay mud, resulting from deposition of estuarine silts, clays and aquatic animal detritus. Most of the sediment within a mudflat is within the intertidal zone, and thus the flat is submerged and exposed approximately twice daily. A recent global remote sensing analysis estimated that approximately 50% of the global extent of tidal flats occurs within eight countries (Indonesia, China, Au ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Congo River
The Congo River ( kg, Nzâdi Kôngo, french: Fleuve Congo, pt, Rio Congo), formerly also known as the Zaire River, is the second longest river in Africa, shorter only than the Nile, as well as the second largest river in the world by discharge volume, following only the Amazon. It is also the world's deepest recorded river, with measured depths around . The Congo- Lualaba- Chambeshi River system has an overall length of , which makes it the world's ninth-longest river. The Chambeshi is a tributary of the Lualaba River, and ''Lualaba'' is the name of the Congo River upstream of Boyoma Falls, extending for . Measured along with the Lualaba, the main tributary, the Congo River has a total length of . It is the only major river to cross the Equator twice. The Congo Basin has a total area of about , or 13% of the entire African landmass. Name The name ''Congo/Kongo'' originates from the Kingdom of Kongo once located on the southern bank of the river. The kingdom in turn was nam ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Smithsonian Contributions To Zoology
The Smithsonian Contributions and Studies Series is a collection of serial periodical publications produced by the Smithsonian Institution, detailing advances in various scientific and societal fields to which the Smithsonian Institution has made contributions. History The Smithsonian Institution began publishing consolidated compilations of quarto-sized papers in 1848, under the name ''Smithsonian Contributions to Knowledge''.History of Scholarly Publishing , ''''. In 1862 octavo
Octavo, a Latin word m ...
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Lipke Holthuis
Lipke Bijdeley Holthuis (21 April 1921 – 7 March 2008) was a Dutch carcinologist, considered one of the "undisputed greats" of carcinology, and "the greatest carcinologist of our time". Holthuis was born in Probolinggo, East Java and obtained his doctorate from Leiden University on 23 January 1946. He was appointed the assistant curator of the ''Rijksmuseum van Natuurlijke Historie'' (now '' Naturalis'') in Leiden in 1941. He was the most prolific carcinologist of the 20th century, publishing 620 papers (108 of which were in the Leiden Museum Journals) totalling 12,795 pages which is an average of 185 pages per year and an average of approximately 21 pages per paper. These were published on many groups of crustacean Crustaceans (Crustacea, ) form a large, diverse arthropod taxon which includes such animals as decapods, seed shrimp, branchiopods, fish lice, krill, remipedes, isopods, barnacles, copepods, amphipods and mantis shrimp. The crustacean gro ...s, their na ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Raymond B
Raymond is a male given name. It was borrowed into English from French (older French spellings were Reimund and Raimund, whereas the modern English and French spellings are identical). It originated as the Germanic ᚱᚨᚷᛁᚾᛗᚢᚾᛞ (''Raginmund'') or ᚱᛖᚷᛁᚾᛗᚢᚾᛞ (''Reginmund''). ''Ragin'' (Gothic) and ''regin'' ( Old German) meant "counsel". The Old High German ''mund'' originally meant "hand", but came to mean "protection". This etymology suggests that the name originated in the Early Middle Ages, possibly from Latin. Alternatively, the name can also be derived from Germanic Hraidmund, the first element being ''Hraid'', possibly meaning "fame" (compare ''Hrod'', found in names such as Robert, Roderick, Rudolph, Roland, Rodney and Roger) and ''mund'' meaning "protector". Despite the German and French origins of the English name, some of its early uses in English documents appear in Latinized form. As a surname, its first recorded appearance in Br ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Angola
, national_anthem = "Angola Avante"() , image_map = , map_caption = , capital = Luanda , religion = , religion_year = 2020 , religion_ref = , coordinates = , largest_city = capital , official_languages = Portuguese , languages2_type = National languages , languages2 = , ethnic_groups = , ethnic_groups_ref = , ethnic_groups_year = 2000 , demonym = , government_type = Unitary dominant-party presidential republic , leader_title1 = President , leader_name1 = João Lourenço , leader_title2 = Vice President , leader_name2 = Esperança da CostaInvestidura do Pre ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Nouadhibou
Nouadhibou (; ar, نواذيبو, Nwādībū, Berber: Nwadibu, formerly in French: ) is the second largest city in Mauritania and serves as a major commercial centre. The city itself has about 118,000 inhabitants expanding to over 140,000 in the larger metropolitan area. It is situated on a 65-kilometre peninsula or headland called Ras Nouadhibou (Berber: ''Ighef Nwadibu''), , or , of which the western side has the Western Saharan city of La Güera. Nouadhibou is consequently located merely a couple of kilometres from the border between Mauritania and Western Sahara. Its current mayor is Elghassem Ould Bellali, who was installed on 15 October 2018. Overview The city consists of four major areas: the city centre, including the airport; Numerowatt to the north; Cansado, the main residential area, to the south; and a dormitory town for the workers of the harbour facilities which are located a few kilometers south of the city, near the tip of the Ras Nouadhibou peninsula, at P ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
