|
Chirocephalus Marchesonii
''Chirocephalus marchesonii'' is a species of fairy shrimp in the family Chirocephalidae. It is endemic to Pilate Lake. Discovery The Chirocephalus marchesonii was observed for the first time in 1954 by Vittorio Marchesoni, director of the Botanical Institute of the University of Camerino, during an excursion. New samples were studied in 1957 by Ruffo and Vesentini, who established that it was a new species of crustacean. Chirocephalus name is in tribute to his first discoverer Vittorio Marchesoni. Description Chirocephalus marchesonii stands out easily from other branchiopods thanks to its long, approximately cylindrical body as well as its lack of a shell. Its body, which presents an obvious metamerism, is divided into three sections: head, thorax equipped with eleven pairs of appendices/fins which also have a breathing function, and abdomen which contains the reproductive organs: an egg sac in the female, and two penises of the same length in the male. These crustacea ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Animal
Animals are multicellular, eukaryotic organisms in the Kingdom (biology), biological kingdom Animalia. With few exceptions, animals Heterotroph, consume organic material, Cellular respiration#Aerobic respiration, breathe oxygen, are Motility, able to move, can Sexual reproduction, reproduce sexually, and go through an ontogenetic stage in which their body consists of a hollow sphere of Cell (biology), cells, the blastula, during Embryogenesis, embryonic development. Over 1.5 million Extant taxon, living animal species have been Species description, described—of which around 1 million are Insecta, insects—but it has been estimated there are over 7 million animal species in total. Animals range in length from to . They have Ecology, complex interactions with each other and their environments, forming intricate food webs. The scientific study of animals is known as zoology. Most living animal species are in Bilateria, a clade whose members have a Symmetry in biology#Bilate ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Arthropoda
Arthropods (, (gen. ποδός)) are invertebrate animals with an exoskeleton, a Segmentation (biology), segmented body, and paired jointed appendages. Arthropods form the phylum Arthropoda. They are distinguished by their jointed limbs and Arthropod cuticle, cuticle made of chitin, often Mineralization (biology), mineralised with calcium carbonate. The arthropod body plan consists of segments, each with a pair of appendages. Arthropods are bilaterally symmetrical and their body possesses an exoskeleton, external skeleton. In order to keep growing, they must go through stages of moulting, a process by which they shed their exoskeleton to reveal a new one. Some species have wings. They are an extremely diverse group, with up to 10 million species. The haemocoel, an arthropod's internal cavity, through which its haemolymph – analogue of blood – circulates, accommodates its interior Organ (anatomy), organs; it has an open circulatory system. Like their exteriors, the internal or ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Branchiopoda
Branchiopoda is a class of crustaceans. It comprises fairy shrimp, clam shrimp, Diplostraca (or Cladocera), Notostraca and the Devonian ''Lepidocaris''. They are mostly small, freshwater animals that feed on plankton and detritus. Description Members of the Branchiopoda are unified by the presence of gills on many of the animals' appendages, including some of the mouthparts. This is also responsible for the name of the group (from the grc, βράγχια, gills, akin to , windpipe; el, πούς, foot). They generally possess compound eyes and a carapace, which may be a shell of two valves enclosing the trunk (as in most Cladocera), broad and shallow (as in the Notostraca), or entirely absent (as in the Anostraca). In the groups where the carapace prevents the use of the trunk limbs for swimming (Cladocera, clam shrimp and the extinct Lipostraca), the antennae are used for locomotion, as they are in the nauplius. Male fairy shrimp have an enlarged pair of antennae with which ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anostraca
Anostraca is one of the four orders of crustaceans in the class Branchiopoda; its members are referred to as fairy shrimp. They live in vernal pools and hypersaline lakes across the world, and they have even been found in deserts, ice-covered mountain lakes and Antarctic ice. They are usually long (exceptionally up to ). Most species have 20 body segments, bearing 11 pairs of leaf-like ''phyllopodia'' (swimming legs), and the body lacks a carapace. They swim "upside-down" and feed by filtering organic particles from the water or by scraping algae from surfaces. They are an important food for many birds and fish, and some are cultured and harvested for use as fish food. There are 300 species spread across 8 families. Description The body of a fairy shrimp is elongated and divided into segments. The whole animal is typically long, but one species, '' Branchinecta gigas'' does not reach sexual maturity until it reaches long, and can grow to long. The exoskeleton is thin and ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chirocephalidae
Chirocephalidae is a family of fairy shrimp, characterised by a reduced or vestigial maxilla, more than two setae on the fifth endite, divided pre-epipodites and widely separated seminal vesicle The seminal vesicles (also called vesicular glands, or seminal glands) are a pair of two convoluted tubular glands that lie behind the urinary bladder of some male mammals. They secrete fluid that partly composes the semen. The vesicles are 5 ...s. It consists of the following eight genera, including the genera formerly placed in the families Linderiellidae and Polyartemiidae: *'' Artemiopsis'' G. O. Sars, 1897 *'' Branchinectella'' Daday de Dées, 1910 *'' Chirocephalus'' Prévost, 1820 *'' Dexteria'' Brtek, 1965 *'' Eubranchipus'' Verrill, 1870 *'' Linderiella'' Brtek, 1964 *'' Polyartemia'' Fischer, 1851 *'' Polyartemiella'' Daday de Dées, 1909 References Anostraca Crustacean families {{branchiopoda-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Chirocephalus
''Chirocephalus'' is a genus of fairy shrimp in the family Chirocephalidae. It contains the following species: *''Chirocephalus algidus'' Cottarelli ''et al.'', 2010 *'' Chirocephalus anatolicus'' Cottarelli, Mura & Özkütük, 2007 *'' Chirocephalus appendicularis'' Vavra, 1905 *'' Chirocephalus baikalensis'' (Naganawa & Orgiljanova, 2000) *''Chirocephalus bairdi'' (Brauer, 1877) *'' Chirocephalus bobrinskii'' (Alcock, 1898) *'' Chirocephalus brevipalpis'' (Orghidan, 1953) *''Chirocephalus brteki'' Cottarelli ''et al.'', 2010 *'' Chirocephalus carnuntanus'' (Brauer, 1877) *'' Chirocephalus chyzeri'' Daday, 1890 *''Chirocephalus croaticus'' Steuer, 1899 *'' Chirocephalus cupreus'' Cottarelli, Mura & Özkütük, 2007 *''Chirocephalus diaphanus'' Prévost, 1803 *'' Chirocephalus festae'' Colosi, 1922 *''Chirocephalus hardingi'' Brtek, 1965 *''Chirocephalus horribilis'' Smirnov, 1948 *''Chirocephalus jaxartensis'' (Smirnov, 1948) *''Chirocephalus josephinae'' (Grube, 1853) *''Chiroce ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lago Di Pilato
Lago di Pilato (''Pilate lake'') is a glacial lake located in Sibylline Mountains, among Apennine. Description It is located in a narrow glacial valley beneath Mount Vector (2476 m) and Redeemer Peak (2448 m) summits. It is supposed to date back to the superior pleistocene. The lake takes its name from a legend in which Pontius Pilate was killed there and buried under lake bed as punishment for his role at passion of the Christ time. Geo-politically the lake is situated in Marche, and it is the sole natural lake of the region (excluding small shoreline lakes), the province is Ascoli Piceno, and is part of the Monti Sibillini National Park. During water abundance periods the lake assumes the shape of a pair of eyeglasses while when there is a lack of water it retreats into two smaller pools. For this reason it is nicknamed ''the lake with glasses''". Endemisms '' Chirocephalus marchesonii'', a freshwater shrimp is endemic Endemism is the state of a species being found ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hydrological Cycle
The water cycle, also known as the hydrologic cycle or the hydrological cycle, is a biogeochemical cycle that describes the continuous movement of water on, above and below the surface of the Earth. The mass of water on Earth remains fairly constant over time but the partitioning of the water into the major reservoirs of ice, fresh water, saline water (salt water) and atmospheric water is variable depending on a wide range of climatic variables. The water moves from one reservoir to another, such as from river to ocean, or from the ocean to the atmosphere, by the physical processes of evaporation, transpiration, condensation, precipitation, infiltration, surface runoff, and subsurface flow. In doing so, the water goes through different forms: liquid, solid (ice) and vapor. The ocean plays a key role in the water cycle as it is the source of 86% of global evaporation. The water cycle involves the exchange of energy, which leads to temperature changes. When water evaporates, it ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Monti Sibillini National Park
The Monti Sibillini National Park ( it, Parco Nazionale dei Monti Sibillini) is an Italian national park located across the regions of Marche and Umbria, encompassing the provinces of Macerata, Fermo, Ascoli Piceno and Perugia Perugia (, , ; lat, Perusia) is the capital city of Umbria in central Italy, crossed by the River Tiber, and of the province of Perugia. The city is located about north of Rome and southeast of Florence. It covers a high hilltop and pa .... It was established in 1993, and now contains more than 70,000 hectares. References * External linksOfficial website [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Freshwater Crustaceans
Fresh water or freshwater is any naturally occurring liquid or frozen water containing low concentrations of dissolved salts and other total dissolved solids. Although the term specifically excludes seawater and brackish water, it does include non- salty mineral-rich waters such as chalybeate springs. Fresh water may encompass frozen and meltwater in ice sheets, ice caps, glaciers, snowfields and icebergs, natural precipitations such as rainfall, snowfall, hail/ sleet and graupel, and surface runoffs that form inland bodies of water such as wetlands, ponds, lakes, rivers, streams, as well as groundwater contained in aquifers, subterranean rivers and lakes. Fresh water is the water resource that is of the most and immediate use to humans. Water is critical to the survival of all living organisms. Many organisms can thrive on salt water, but the great majority of higher plants and most insects, amphibians, reptiles, mammals and birds need fresh water to survive. Fresh water is ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
