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Bryconops Sapezal
''Bryconops sapezal'' is a small freshwater fish native to the Rio Tapajós basin of Brazil. It is one of the more recent additions to its genus, described in 2018, and has a name that means "covered in sapê", or thatching. This originates from the Sapezal municipality of Mato Grosso, Brazil, which is type locality of ''B. sapezal''. Description ''Bryconops sapezal'' ranges from 3.03 to 6.99cm SL (standard length), with the largest specimen at 9.12 cm SL. Most species of ''Bryconops'' are within the 6 to 8 cm SL range. It is a rather slender and elongate species, with a relatively small head and a body that tapers away from the origin of the dorsal fin. The scales are dark-gray on the back, silver with a bluish tint on the sides, and pale on the belly. A blue tint is rare in ''Bryconops'' (only otherwise seen in '' B. inpai'' and '' B. marabaixo''); most species are plain silvery or slightly greenish. The lower jaw ranges from dark-yellow to black. The dorsal fin is red, the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juliana M
Juliana (variants Julianna, Giuliana, Iuliana, Yuliana, etc) is a feminine given name which is the feminine version of the Roman name Julianus. Juliana or Giuliana was the name of a number of early saints, notably Saint Julian the Hospitaller, which ensured the name's continued popularity in the medieval period. People with the given name Juliana or Julianna Medieval :''Ordered chronologically'' *Julianna of Paul and Juliana (died 270), Christian martyr during the Aurelian persecution *St. Juliana of Nicomedia (died 304), Christian martyr during the Diocletian persecution *St. Juliana (, a martyr associated with the legend of Saint Cucuphas *Juliana Grenier (died between 1213 and 1216) *St. Juliana of Liège (1193–1252), nun and visionary from Retinnes in Fléron in the Bishopric of Liège, now in Belgium *St. Juliana Falconieri (1270–1341), Italian foundress of the Servite Third Order *Juliana or Julian of Norwich (1342–1416), English anchoress, Christian mystic and theolo ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Maxilla
The maxilla (plural: ''maxillae'' ) in vertebrates is the upper fixed (not fixed in Neopterygii) bone of the jaw formed from the fusion of two maxillary bones. In humans, the upper jaw includes the hard palate in the front of the mouth. The two maxillary bones are fused at the intermaxillary suture, forming the anterior nasal spine. This is similar to the mandible (lower jaw), which is also a fusion of two mandibular bones at the mandibular symphysis. The mandible is the movable part of the jaw. Structure In humans, the maxilla consists of: * The body of the maxilla * Four processes ** the zygomatic process ** the frontal process of maxilla ** the alveolar process ** the palatine process * three surfaces – anterior, posterior, medial * the Infraorbital foramen * the maxillary sinus * the incisive foramen Articulations Each maxilla articulates with nine bones: * two of the cranium: the frontal and ethmoid * seven of the face: the nasal, zygomatic, lacrimal, inferior n ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Characiformes
Characiformes is an order of ray-finned fish, comprising the characins and their allies. Grouped in 18 recognized families, more than 2000 different species are described, including the well-known piranha and tetras.; Buckup P.A.: "Relationships of the Characidiinae and phylogeny of characiform fishes (Teleostei: Ostariophysi)", ''Phylogeny and Classification of Neotropical Fishes'', L.R. Malabarba, R.E. Reis, R.P. Vari, Z.M. Lucena, eds. (Porto Alegre: Edipucr) 1998:123-144. Taxonomy The Characiformes form part of a series called the Otophysi within the superorder Ostariophysi. The Otophysi contain three other orders, Cypriniformes, Siluriformes, and Gymnotiformes. The Characiformes form a group known as the Characiphysi with the Siluriformes and Gymnotiformes. The order Characiformes is the sister group to the orders Siluriformes and Gymnotiformes, though this has been debated in light of recent molecular evidence. Originally, the characins were all grouped within a single ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Fish Described In 2018
Fish are aquatic, craniate, gill-bearing animals that lack limbs with digits. Included in this definition are the living hagfish, lampreys, and cartilaginous and bony fish as well as various extinct related groups. Approximately 95% of living fish species are ray-finned fish, belonging to the class Actinopterygii, with around 99% of those being teleosts. The earliest organisms that can be classified as fish were soft-bodied chordates that first appeared during the Cambrian period. Although they lacked a true spine, they possessed notochords which allowed them to be more agile than their invertebrate counterparts. Fish would continue to evolve through the Paleozoic era, diversifying into a wide variety of forms. Many fish of the Paleozoic developed external armor that protected them from predators. The first fish with jaws appeared in the Silurian period, after which many (such as sharks) became formidable marine predators rather than just the prey of arthropods. Mos ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Jaú National Park
The Jaú National Park ( pt, Parque Nacional do Jaú) is a National park (Brazil), national park located in the state of Amazonas State, Brazil, Amazonas, Brazil. It is one of the largest forest reserve in South America, and part of a World Heritage Site. Location The name "Jaú" comes from that of one of the largest fish in Brazil, the gilded catfish or jau (''Zungaro zungaro''), after which the main river of the park is named. The park is in the Amazon biome in the Japurá-Solimões-Negro moist forests ecoregion. It covers an area of . It was created by decree 85.200 of 24 September 1980. It is administered by the Chico Mendes Institute for Biodiversity Conservation. It covers parts of the municipalities of Barcelos, Amazonas, Barcelos, Codajás and Novo Airão in the state of Amazonas. The park is one of the largest protected areas in Brazil. It is about northwest of Manaus and contains the entire Jaú River (Amazonas), Jaú River basin between the Unini River to the north an ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Anthropogenic Hazard
Anthropogenic hazards are hazards caused by human action or inaction. They are contrasted with natural hazards. Anthropogenic hazards may adversely affect humans, other organisms, biomes, and ecosystems. They can even cause an omnicide. The frequency and severity of hazards are key elements in some risk analysis methodologies. Hazards may also be described in relation to the impact that they have. A hazard only exists if there is a pathway to exposure. As an example, the center of the earth consists of molten material at very high temperatures which would be a severe hazard if contact was made with the core. However, there is no feasible way of making contact with the core, therefore the center of the earth currently poses no hazard. Anthropogenic hazards can be grouped into societal hazards (criminality, civil disorder, terrorism, war, industrial hazards, engineering hazards, power outage, fire), hazards caused by transportation and environmental hazards. Societal hazards ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Illegal Gold Mining In Brazil
Gold mining in Brazil has taken place continually in the Amazon, beginning in the 1690s, and has profoundly transformed the economy of Brazil and other surrounding countries. In the late 17th century, amid the search for indigenous people to use in the slave trade, Portuguese colonists began to recognize the abundance of gold in the Amazon, triggering what would become the longest gold rush in history. As a consequence, the area was flooded with prospectors from around the globe. Because of an already profitable agricultural operation taking place in the east, many Brazilians have been funneled into the jungle as part of several agricultural reform programs. Though the methods and practices have changed in the following centuries, the fact remains that the Amazon can yield tremendous quantities of gold for those who are willing to venture into the jungle. The work is often dangerous and detrimental to the surrounding ecosystems. Because artisanal mining is prohibited under federa ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
International Union For Conservation Of Nature
The International Union for Conservation of Nature (IUCN; officially International Union for Conservation of Nature and Natural Resources) is an international organization working in the field of nature conservation and sustainable use of natural resources. It is involved in data gathering and analysis, research, field projects, advocacy, and education. IUCN's mission is to "influence, encourage and assist societies throughout the world to conserve nature and to ensure that any use of natural resources is equitable and ecologically sustainable". Over the past decades, IUCN has widened its focus beyond conservation ecology and now incorporates issues related to sustainable development in its projects. IUCN does not itself aim to mobilize the public in support of nature conservation. It tries to influence the actions of governments, business and other stakeholders by providing information and advice and through building partnerships. The organization is best known to the wider pu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Papagaio River (Mato Grosso)
The Papagaio River is a river of Mato Grosso state in western Brazil. It is a tributary of the Juruena River. See also *List of rivers of Mato Grosso List of rivers in Mato Grosso (States of Brazil, Brazilian State). The list is arranged by drainage basin, with respective tributaries indented under each larger stream's name and ordered from downstream to upstream. Mato Grosso is divided by tho ... ReferencesBrazilian Ministry of Transport Rivers of Mato Grosso {{MatoGrosso-river-stub ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Juruena River
The Juruena River ( pt, Rio Juruena) is a long river in west-central Brazil, in the state of Mato Grosso. Course The Juruena originates in the Parecis plateau. Within Mato Grosso the river defines the eastern boundary of the Igarapés do Juruena State Park, created in 2002. For the last of its lower part the river becomes the border between the states Mato Grosso and Amazonas (Brazilian state), Amazonas. In this section the river forms the boundary between the Sucunduri State Park to the west in Amazonas and the Juruena National Park to the east in Mato Grosso. In the north of this section it forms the boundary between the Bararati Sustainable Development Reserve in Amazonas and the Apiacás Ecological Reserve in Mato Grosso. The Juruena finally joins the Teles Pires river to form the Tapajós river, which is one of the biggest tributaries to the Amazon River. The Juruena River is not fully navigable due to its many waterfalls and rapids. The river is known for the Salto August ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Gill Raker
Gill rakers in fish are bony or cartilaginous processes that project from the branchial arch (gill arch) and are involved with suspension feeding tiny prey. They are not to be confused with the gill filaments that compose the fleshy part of the gill used for gas exchange. Rakers are usually present in two rows, projecting from both the anterior and posterior side of each gill arch. Rakers are widely varied in number, spacing, and form. By preventing food particles from exiting the spaces between the gill arches, they enable the retention of food particles in filter feeders. The structure and spacing of gill rakers in fish determines the size of food particles trapped, and correlates with feeding behavior. Fish with densely spaced, elongated, comb-like gill rakers are efficient at filtering tiny prey, whereas carnivores and omnivores often have more widely spaced gill rakers with secondary projections. Because gill raker characters often vary between closely related taxa, they are ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Caudal Peduncle
Fins are distinctive anatomical features composed of bony spines or rays protruding from the body of a fish. They are covered with skin and joined together either in a webbed fashion, as seen in most bony fish, or similar to a flipper, as seen in sharks. Apart from the tail or caudal fin, fish fins have no direct connection with the spine and are supported only by muscles. Their principal function is to help the fish swim. Fins located in different places on the fish serve different purposes such as moving forward, turning, keeping an upright position or stopping. Most fish use fins when swimming, flying fish use pectoral fins for gliding, and frogfish use them for crawling. Fins can also be used for other purposes; male sharks and mosquitofish use a modified fin to deliver sperm, thresher sharks use their caudal fin to stun prey, reef stonefish have spines in their dorsal fins that inject venom, anglerfish use the first spine of their dorsal fin like a fishing rod to lu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
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