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Amolops Siju
''Amolops siju'', the Siju Cave frog, is a species of true frog found in the Siju Cave, India. Description It is brown with green mottling and it has dark bands on the legs. The ventral side is light with dark patches. Only 4 specimens have been collected of the species. The 3 females had an SVL of and the single male had an SVL of , which shows a drastic size difference (sexual dimorphism). Distribution and ecology It has only been found in Siju Cave but it is hypothesized that they migrate down there. Siju Cave is made of limestone Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science) ... and maintains a steady temperature and humidity, which may be attractive for a frog looking for warmth. This hypothesis is further supported by the fact that the frog has no troglobitic adap ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Bhaskar Saikia
Bhaskar means light or the moon People *Bhāskara I (c. 600 – c. 680), Indian mathematician, Bhaskaracharya * Bhaskara II (1114–1185), Indian mathematician and astronomer * Bhaskarbuwa Bakhale (1869–1922), Indian classical vocalist *Bhaskar Chandavarkar (1936–2009), Indian sitar player *Bhaskar Chandavarkar (1936–2009), Indian sitar player * Bhaskar Jyoti Mahanta (born: 1963), Indian police officer * Bhaskar Menon, music industry executive of Indian origin * Bhaskar Pramanik, present Chairman of Microsoft India *Bhaskar Sunkara, American publisher * Bhaskar Ramchandra Tambe(1874–1941), Marathi poet from India * Bommarillu Bhaskar, known mononymically as Bhaskar, Indian Telugu film director * K. Vijaya Bhaskar, Indian Telugu film director *Kola Bhaskar, Indian film editor *M. Bhaskar, also known as ''Oscar Movies'' Bhaskar, Indian Tamil film director & producer * M. S. Baskar, Indian actor *Roy Bhaskar, British philosopher *Sanjeev Bhaskar, British comedian and actor * V ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
True Frog
True frogs is the common name for the frog family (biology), family Ranidae. They have the widest distribution of any frog family. They are abundant throughout most of the world, occurring on all continents except Antarctica. The true frogs are present in North America, northern South America, Europe, Africa (including Madagascar), and Asia. The Asian range extends across the East Indies to New Guinea and a single species, the Australian wood frog (''Hylarana daemelii''), has spread into the far north of Australia. Typically, true frogs are smooth and moist-skinned, with large, powerful legs and extensively webbed feet. The true frogs vary greatly in size, ranging from small—such as the wood frog (''Lithobates sylvatica'')—to large. Many of the true frogs are aquatic or live close to water. Most species lay their eggs in the water and go through a tadpole stage. However, as in most families of frogs, there is large variation of habitat within the family. There are als ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Siju Cave
Siju Dobakkol, also known as Siju Cave or Bat Cave in English, is one of the most well-known and significant caves in India. Located in the Garo Hills of the North East Indian state of Meghalaya, near Napak Lake and the Simsang River game reserve, it is a renowned limestone cave famous for its impressive stalagmite and stalactite formations. Siju Dobakkol is home to tens of thousands of bats, and holds great significance in the field of biospeleology, being one of the most thoroughly researched caves in the Indian subcontinent. History and exploration Although known since ancient times, the scientific exploration of Siju Cave dates back to 1922, when it was investigated by Stanley Kemp and K. Chopra of the Indian Museum, Calcutta (now Kolkata), as part of an interdisciplinary research project. This project made Siju Cave one of the best-researched cave systems in the Indian subcontinent at that time. In 1927, it was discovered that the temperature in the cave remains rela ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
India
India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since 2023; and, since its independence in 1947, the world's most populous democracy. Bounded by the Indian Ocean on the south, the Arabian Sea on the southwest, and the Bay of Bengal on the southeast, it shares land borders with Pakistan to the west; China, Nepal, and Bhutan to the north; and Bangladesh and Myanmar to the east. In the Indian Ocean, India is near Sri Lanka and the Maldives; its Andaman and Nicobar Islands share a maritime border with Thailand, Myanmar, and Indonesia. Modern humans arrived on the Indian subcontinent from Africa no later than 55,000 years ago., "Y-Chromosome and Mt-DNA data support the colonization of South Asia by modern humans originating in Africa. ... Coalescence dates for most non-European populations averag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Zoological Specimen
A zoological specimen is an animal or part of an animal preserved for scientific use. Various uses are: to verify the identity of a (species), to allow study, increase public knowledge of zoology. Zoological specimens are extremely diverse. Examples are bird and mammal study skins, mounted specimens, skeletal material, casts, pinned insects, dried material, animals preserved in liquid preservatives, and microscope slides. Natural history museums are repositories of zoological specimens Study skins Bird and mammal specimens are conserved as dry study skins, a form of taxidermy. The skin is removed from the animal's carcass, treated with absorbents, and filled with cotton or polyester batting (In the past plant fibres or sawdust were used). Bird specimens have a long, thin, wooden dowel wrapped in batting at their center. The dowel is often intentionally longer than the bird's body and exits at the animal's vent. This exposed dowel provides a place to handle the bird without distu ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Snout–vent Length
Snout–vent length (SVL) is a morphometric measurement taken in herpetology from the tip of the snout to the most posterior opening of the cloacal slit (vent)."direct line distance from tip of snout to posterior margin of vent" It is the most common measurement taken in herpetology, being used for all amphibians, lepidosaurs, and crocodilia Crocodilia () is an order of semiaquatic, predatory reptiles that are known as crocodilians. They first appeared during the Late Cretaceous and are the closest living relatives of birds. Crocodilians are a type of crocodylomorph pseudosuchia ...ns (for turtles, carapace length (CL) and plastral length (PL) are used instead). The SVL differs depending on whether the animal is struggling or relaxed (if alive), or various other factors if it is a preserved specimen. For fossils, an osteological correlate such as precaudal length must be used. When combined with weight and body condition, SVL can help deduce age and sex. Advantag ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sexual Dimorphism
Sexual dimorphism is the condition where sexes of the same species exhibit different Morphology (biology), morphological characteristics, including characteristics not directly involved in reproduction. The condition occurs in most dioecy, dioecious species, which consist of most animals and some plants. Differences may include secondary sex characteristics, size, weight, color, markings, or behavioral or cognitive traits. Male-male reproductive competition has evolved a diverse array of sexually dimorphic traits. Aggressive utility traits such as "battle" teeth and blunt heads reinforced as battering rams are used as weapons in aggressive interactions between rivals. Passive displays such as ornamental feathering or song-calling have also evolved mainly through sexual selection. These differences may be subtle or exaggerated and may be subjected to sexual selection and natural selection. The opposite of dimorphism is ''monomorphism'', when both biological sexes are phenotype, ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Hypothesis
A hypothesis (: hypotheses) is a proposed explanation for a phenomenon. A scientific hypothesis must be based on observations and make a testable and reproducible prediction about reality, in a process beginning with an educated guess or thought. If a hypothesis is repeatedly independently demonstrated by experiment to be true, it becomes a scientific theory. In colloquial usage, the words "hypothesis" and "theory" are often used interchangeably, but this is incorrect in the context of science. A working hypothesis is a provisionally-accepted hypothesis used for the purpose of pursuing further progress in research. Working hypotheses are frequently discarded, and often proposed with knowledge (and warning) that they are incomplete and thus false, with the intent of moving research in at least somewhat the right direction, especially when scientists are stuck on an issue and brainstorming ideas. A different meaning of the term ''hypothesis'' is used in formal l ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Limestone
Limestone is a type of carbonate rock, carbonate sedimentary rock which is the main source of the material Lime (material), lime. It is composed mostly of the minerals calcite and aragonite, which are different Polymorphism (materials science), crystal forms of calcium carbonate . Limestone forms when these minerals Precipitation (chemistry), precipitate out of water containing dissolved calcium. This can take place through both biological and nonbiological processes, though biological processes, such as the accumulation of corals and shells in the sea, have likely been more important for the last 540 million years. Limestone often contains fossils which provide scientists with information on ancient environments and on the evolution of life. About 20% to 25% of sedimentary rock is carbonate rock, and most of this is limestone. The remaining carbonate rock is mostly Dolomite (rock), dolomite, a closely related rock, which contains a high percentage of the mineral Dolomite (mine ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Troglomorphism
Troglomorphism is the morphological adaptation of an animal to living in the constant darkness of caves, characterised by features such as loss of pigment, reduced eyesight or blindness, and frequently with attenuated bodies or appendages. The terms troglobitic, stygobitic, stygofauna, troglofauna, and hypogean or hypogeic, are often used for cave-dwelling organisms. Troglomorphism occurs in molluscs, velvet worms, arthropods, fish, amphibians (notably cave salamanders) and reptiles. To date no mammals or birds have been found to live exclusively in caves. Pickerel frogs are classed as either trogloxenes, or possibly troglophiles. The first Troglobiont to be described was ''Leptodirus hochenwartii.'' Morphology of Troglomorphism Troglomorphic species must adapt to unique elements of subterranean life, like continual darkness, reduced season queues, and limited food availability. The reduction of characters like eyes and pigmentation is generally considered to be an evolutionary ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Amolops
''Amolops'' (commonly known as cascade frogs or sucker frogs) is a genus of true frogs (family Ranidae) native mainly to eastern and south-eastern Asia. These frogs are closely related to such genera as ''Huia'', '' Meristogenys'', ''Odorrana'', ''Pelophylax'' and ''Rana'', but still form a distinct lineage among the core radiation of true frogs.Cai ''et al.'' (2007), Stuart (2008) They are commonly known as "torrent frogs" after their favorite habitat - small rapid-flowing mountain and hill streams - but this name is used for many similar-looking frogs regardless of whether they are loosely related. Several species are highly convergent with other Ranidae "torrent frogs". '' A. archotaphus'' and its relatives for example very much resemble '' Odorrana livida''. In another incidence of convergent evolution yielding adaptation to habitat, the tadpoles of ''Amolops'', ''Huia'', ''Meristogenys'' as well as ''Rana sauteri'' have a raised and usually well-developed sucker on their ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
