Samar Cobra
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Samar Cobra
The Samar cobra (''Naja samarensis'') also called Peters' cobra, southern Philippine cobra or Visayan cobra, is a highly venomous species of spitting cobra native to the Visayas and Mindanao island groups of the Philippines. Description The Samar cobra is a species of spitting cobra that can grow up to 1.4 meters in length. Their coloring varies from a black and yellow to green. Scalation There are 17-25 scale rows around the hood, 17-19 ahead of mid-body; 161-184 ventrals, 41-52 subcaudals, basal pairs sometimes undivided. Reproduction The Samar cobra, or southeastern Philippines cobra, is oviparous, laying clutches of up to eight eggs. Distribution and habitat The Samar cobra is endemic to the southern Philippines. Specifically, the Visayas and Mindanao Mindanao ( ) is the List of islands of the Philippines, second-largest island in the Philippines, after Luzon, and List of islands by population, seventh-most populous island in the world. Located in the southern r ...
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Spitting Cobra
A "spitting" cobra is any of several species of cobra that can intentionally, defensively shoot their snake venom, venom directly from their fangs. This substance has two functions, with the first being as venom that can be absorbed via the victim’s eyes, mouth, or nose (or any mucous membrane or existing wound), and secondly as a toxungen, which can be sprayed on the target surface. Their ability to target and shoot venom is utilised in several different ways, self-defense being the most common instance. Studies have shown that the targets (at which the cobras shoot) are far from random; rather, spitting cobras consciously take aim, directing their spray to the eyes and face of an aggressor with 90% accuracy. In a remarkable case of convergent evolution, the individual cobra species evolved the ability to spit venom independently. Background Spitting cobras belong to the Elapidae, which comprises snakes including cobras, mambas, coral snakes, kraits, taipans, death adders ...
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Visayas
The Visayas ( ), or the Visayan Islands (Bisayan languages, Visayan: ''Kabisay-an'', ; Filipino language, Filipino: ''Kabisayaan'' ), are one of the three Island groups of the Philippines, principal geographical divisions of the Philippines, along with Luzon and Mindanao. Located in the central part of the archipelago, it consists of several islands, primarily surrounding the Visayan Sea, although the Visayas are also considered the northeast extremity of the entire Sulu Sea. Its inhabitants are predominantly the Visayan peoples. The major islands of the Visayas are Panay, Negros, Cebu Island, Cebu, Bohol Island, Bohol, Leyte and Samar. The region may also include the provinces of Palawan, Romblon, and Masbate, whose populations identify as Visayan and whose languages are more closely related to other Visayan languages than to the major languages of Luzon. There are four administrative Regions of the Philippines, regions in the Visayas: Western Visayas (pop. 4.73 million), Neg ...
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Mindanao
Mindanao ( ) is the List of islands of the Philippines, second-largest island in the Philippines, after Luzon, and List of islands by population, seventh-most populous island in the world. Located in the southern region of the archipelago, the island is part of an island group of the same name that also includes its adjacent islands, notably the Sulu Archipelago. According to the 2020 census, Mindanao had a population of 26,252,442, while the entire island group had an estimated population of 27,021,036. Mindanao is divided into six administrative regions: the Zamboanga Peninsula, Northern Mindanao, the Caraga region, the Davao Region, Davao region, Soccsksargen, and the autonomous region of Bangsamoro. According to the 2020 census, Davao City is the most populous city on the island, with 1,776,949 people, followed by Zamboanga City (pop. 977,234), Cagayan de Oro (pop. 728,402), General Santos (pop. 697,315), Butuan (pop. 372,910), Iligan (pop. 363,115) and Cotabato City (pop. ...
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Philippine
The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a total area of roughly 300,000 square kilometers, which are broadly categorized in Island groups of the Philippines, three main geographical divisions from north to south: Luzon, Visayas, and Mindanao. With a population of over 110 million, it is the world's List of countries and dependencies by population, twelfth-most-populous country. The Philippines is bounded by the South China Sea to the west, the Philippine Sea to the east, and the Celebes Sea to the south. It shares maritime borders with Taiwan to the north, Japan to the northeast, Palau to the east and southeast, Indonesia to the south, Malaysia to the southwest, Vietnam to the west, and China to the northwest. It has Ethnic groups in the Philippines, diverse ethnicities and Culture o ...
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Oviparous
Oviparous animals are animals that reproduce by depositing fertilized zygotes outside the body (i.e., by laying or spawning) in metabolically independent incubation organs known as eggs, which nurture the embryo into moving offsprings known as hatchlings with little or no embryonic development within the mother. This is the reproductive method used by most animal species, as opposed to viviparous animals that develop the embryos internally and metabolically dependent on the maternal circulation, until the mother gives birth to live juveniles. Ovoviviparity is a special form of oviparity where the eggs are retained inside the mother (but still metabolically independent), and are carried internally until they hatch and eventually emerge outside as well-developed juveniles similar to viviparous animals. Modes of reproduction The traditional modes of reproduction include oviparity, taken to be the ancestral condition, traditionally where either unfertilised oocytes or ...
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Philippine Cobra
The Philippine cobra (''Naja philippinensis'') also called Philippine spitting cobra or northern Philippine cobra, is a stocky, highly venomous species of spitting cobra native to the northern regions of the Philippines. The Philippine cobra is called in Tagalog, in Ilocano. Taxonomy ''Naja philippinensis'' was described by American herpetologist Edward Harrison Taylor in 1922. The generic name ''naja'' is a Latinisation of the Sanskrit word ' () meaning "cobra". The specific epithet ''philippinensis'' is Latin and literally means "from the Philippine Islands". Description The Philippine cobra is a stocky snake of medium length with long cervical ribs capable of expanding, so when threatened, a hood can be formed. The average length of this species is . The species can grow to lengths of However, subpopulations of the species, particularly specimens from Mindoro Island, are said to attain lengths of , but these are unconfirmed claims. If true, however, 2 m would be very rare ...
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Three-finger Toxin
Three-finger toxins (abbreviated 3FTx) are a protein superfamily of small toxin proteins found in the venom of snakes. Three-finger toxins are in turn members of a larger superfamily of three-finger protein domains which includes non-toxic proteins that share a similar protein fold. The group is named for its common structure consisting of three beta strand loops connected to a central core containing four conserved disulfide bonds. The 3FP protein domain has no enzymatic activity and is typically between 60 and 74 amino acid residues long. Despite their conserved structure, three-finger toxin proteins have a wide range of pharmacological effects. Most members of the family are neurotoxins that act on cholinergic intercellular signaling; the alpha-neurotoxin family interacts with muscle nicotinic acetylcholine receptors (nAChRs), the kappa-bungarotoxin family with neuronal nAChRs, and muscarinic toxins with muscarinic acetylcholine receptors (mAChRs). Structure The three-f ...
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Intravenous Therapy
Intravenous therapy (abbreviated as IV therapy) is a medical technique that administers fluids, medications and nutrients directly into a person's vein. The intravenous route of administration is commonly used for rehydration or to provide nutrients for those who cannot, or will not—due to reduced mental states or otherwise—consume food or water per os, by mouth. It may also be used to administer pharmaceutical drug, medications or other medical therapy such as blood transfusion, blood products or electrolytes to correct electrolyte imbalances. Attempts at providing intravenous therapy have been recorded as early as the 1400s, but the practice did not become widespread until the 1900s after the development of techniques for safe, effective use. The intravenous route is the fastest way to deliver medications and fluid replacement throughout the body as they are introduced directly into the circulatory system and thus quickly distributed. For this reason, the intravenous route ...
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Naja
''Naja'' is a genus of venomous elapid snakes commonly known as cobras (or "true cobras"). Various species occur throughout Africa, Southwest Asia, South Asia, and Southeast Asia. Several other elapid species are often called "cobras", such as the king cobra and the rinkhals, but they are not "true cobras", in that they do not belong to the genus ''Naja''. Until recently, the genus ''Naja'' had 20 to 22 species, but it has undergone several Taxonomy (biology), taxonomic revisions in recent years, so sources vary greatly. Wide support exists, though, for a 2009 revision that synonymised the genera ''Boulengerina'' and ''Paranaja multifasciata, Paranaja'' with ''Naja''. According to that revision, the genus ''Naja'' now includes 38 species. Etymology The origin of the Genus, generic name, ''Naja'', is from the Sanskrit ''nāga'' (with a hard "g") meaning "snake". Some hold that the Sanskrit word is Cognate (etymology), cognate with English "snake", Germanic: ''*snēk-a-'', Pr ...
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Reptiles Of The Philippines
The wildlife of the Philippines includes a significant number of endemism, endemic Flora of the Philippines, plant and animal species. The country's surrounding waters reportedly have the highest level of marine biodiversity in the world. The Philippines is one of the seventeen megadiverse countries and is a global biodiversity hotspot. In 2013, 700 of the country's 52,177 species were listed as List of threatened species of the Philippines, threatened. The Philippines has among the highest rates of species discovery in the world with 16 new species of mammal discovered in the last ten years. Because of this, the degree of endemism in the Philippines has risen and will likely continue to rise. Some of the smallest and largest animals and plants are found in the Philippines. These include the smallest primate (tarsier), the biggest moth (Atlas moth, or ''mariposa'' in Tagalog), the smallest deer (Philippine mouse-deer or ''pilandok''), the smallest fish (Philippine goby), and th ...
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Endemic Fauna Of The Philippines
Endemism is the state of a species being found only in a single defined geographic location, such as an island, state, nation, country or other defined zone; organisms that are indigenous to a place are not endemic to it if they are also found elsewhere. For example, the Cape sugarbird is found exclusively in southwestern South Africa and is therefore said to be ''endemic'' to that particular part of the world. An endemic species can also be referred to as an ''endemism'' or, in scientific literature, as an ''endemite''. Similarly, many species found in the Western ghats of India are examples of endemism. Endemism is an important concept in conservation biology for measuring biodiversity in a particular place and evaluating the risk of extinction for species. Endemism is also of interest in evolutionary biology, because it provides clues about how changes in the environment cause species to undergo range shifts (potentially expanding their range into a larger area or becom ...
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Fauna Of Samar
Fauna (: faunae or faunas) is all of the animal life present in a particular region or time. The corresponding terms for plants and fungi are ''flora'' and ''funga'', respectively. Flora, fauna, funga and other forms of life are collectively referred to as ''Biota (ecology), biota''. Zoologists and paleontologists use ''fauna'' to refer to a typical collection of animals found in a specific time or place, e.g. the "Sonoran Desert fauna" or the "Burgess Shale fauna". Paleontology, Paleontologists sometimes refer to a sequence of faunal stages, which is a series of rocks all containing similar fossils. The study of animals of a particular region is called faunistics. Etymology '':wikt:fauna, Fauna'' comes from the name Fauna (deity), Fauna, a Roman goddess of earth and fertility, the Roman god Faunus, and the related forest spirits called Fauns. All three words are cognates of the name of the Greek god Pan (god), Pan, and ''panis'' is the Modern Greek equivalent of fauna (πα� ...
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