24-765: Ramdia is an Indian village in Kamrup rural district in the state of Assam . It is situated on the north bank of river Brahmaputra 30 km from the city Guwahati , near Hajo town. Farming, local businesses, and government service are main professions of the people of Ramdia. Ramdia has several government and non-government schools and a college, including: The village is near National Highway 27 and connected to nearby towns and cities with regular buses and other modes of transportation. Regular bus services along with local passenger vehicles are available from Guwahati . Kamrup rural district Kamrup Rural district , or simply Kamrup district (Pron: ˈkæmˌrəp or ˈkæmˌru:p),
48-479: A few plover species is clearly related to a strongly male-biased adult sex ratio. Those species with male care and polyandry invariably have adult sex ratios with a large surplus of males, which in some cases can reach as high as six males per female. Male-biased adult sex ratios have also been shown to correlate with cooperative breeding in mammals such as alpine marmots and wild canids . This correlation may also apply to cooperatively breeding birds, though
72-479: A sacred Arya Avalokiteśvara statue to Stakna Monastery in Ladakh . Languages of Kamrup district (2011) According to the 2011 census, 74.43% of the population spoke Assamese, 19.90% Bengali , 1.86% Garo , 1.41% Boro and 1.17% Hindi as their first language. Sex ratio A sex ratio is the ratio of males to females in a population . As explained by Fisher's principle , for evolutionary reasons this
96-412: A total of 640 ). The district has a population density of 436 inhabitants per square kilometre (1,130/sq mi) . Its population growth rate over the decade 2001-2011 was 15.67%. Kamrup has a sex ratio of 946 females for every 1000 males, and a literacy rate of 72.81%. Scheduled Castes and Scheduled Tribes made up 7.11% and 12.00% of the population respectively. The religious composition of
120-600: Is an administrative district in the state of Assam in India formed by dividing the old Kamrup district into two in the year 2003; other being Kamrup Metropolitan district , named after the region it constitutes. This district, along with Nalbari , Barpeta , Kamrup Metropolitan , Bajali and Baksa districts has been created from the Undivided Kamrup district . Rangiya is the Sub-District of Kamrup. Kamrup Rural district
144-461: Is nearly balanced, with 101 males for every 100 females. In most species, the sex ratio varies according to the age profile of the population. It is generally divided into four subdivisions: These definitions can be somewhat subjective since they lack clear boundaries. Sex ratio theory is a field of academic study which seeks to understand the sex ratios observed in nature from an evolutionary perspective. It continues to be heavily influenced by
168-753: Is roughly the same regardless of its sex, this translates to an approximately equal sex ratio. Bacteria of the genus Wolbachia cause skewed sex ratios in some arthropod species as they kill males. Sex-ratio of adult populations of pelagic copepods is usually skewed towards dominance of females. However, there are differences in adult sex ratios between families: in families in which females require multiple matings to keep producing eggs, sex ratios are less biased (close to 1); in families in which females can produce eggs continuously after only one mating, sex ratios are strongly skewed towards females. Several species of reptiles have temperature-dependent sex determination , where incubation temperature of eggs determines
192-492: Is typically about 1:1 in species which reproduce sexually . However, many species deviate from an even sex ratio, either periodically or permanently. Examples include parthenogenic and androgenetic species, periodically mating organisms such as aphids, some eusocial wasps , bees , ants , and termites . The human sex ratio is of particular interest to anthropologists and demographers. In human societies, sex ratios at birth may be considerably skewed by factors such as
216-419: The age of mother at birth and by sex-selective abortion and infanticide . Exposure to pesticides and other environmental contaminants may be a significant contributing factor as well. As of 2024, the global sex ratio at birth is estimated at 107 boys to 100 girls (1,000 boys per 934 girls). By old age, the sex ratio reverses, with 81 older men for every 100 older women; across all ages, the global population
240-507: The birds as pests, but outreach efforts including cultural and religious programming, especially aimed at local women, have rallied Kamrup residents to be proud of and protect the storks. According to the 2011 census Kamrup district has a population of 1,517,542, roughly equal to the West African country of Gabon or the US state of Hawaii . This gives it a ranking of 327th in India (out of
264-693: The district includes Hinduism (877,495) 57.82% majority, second most popular is Islam numbering (601,784) constituting 39.66% of the region and rest 2.52% include others religions like Sikhism , Christianity , Buddhism , Jainism and indigenous tribal religions according to census 2011 report. The district has people belonging to various indigenous Assamese communities like Keots/Kaibarta, Bodo, Rabha, Tiwa/Lalung, Amri Karbi, Dom/Nadiyal, Koch-Rajbongshi etc. The district has followers of Hinduism , Islam , Christianity , Buddhism and Animism . The ancient temples of Kamakhya and Hajo attracts many pilgrims from all quarters. The people of Kamrup also donated
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#1732858542870288-544: The evidence is less clear. It is known, however, that both male-biased adult sex ratios and cooperative breeding tend to evolve where caring for offspring is extremely difficult due to low secondary productivity, as in Australia and Southern Africa . It is also known that in cooperative breeders where both sexes are philopatric like the varied sittella , adult sex ratios are equally or more male-biased than in those cooperative species, such as fairy-wrens , treecreepers and
312-413: The male fish dies, the strongest female changes its sex to become the male for the group. All of these wrasses are born female, and only become male in this situation. Other species, like clownfish, do this in reverse, where all start out as non-reproductive males, and the largest male becomes a female, with the second-largest male maturing to become reproductive. Traditionally, farmers have discovered that
336-434: The most economically efficient community of animals will have a large number of females and a very small number of males. A herd of cows with a few bulls or a flock of hens with one rooster are the most economical sex ratios for domesticated livestock. It was found that the amount of fertilizing pollen can influence secondary sex ratio in dioecious plants. Increase in pollen amount leads to decrease in number of male plants in
360-404: The number of males and females from the 1:1 sex ratio. Spending equal amounts of resources to produce offspring of either sex is an evolutionarily stable strategy : if the general population deviates from this equilibrium by favoring one sex, one can obtain higher reproductive success with less effort by producing more of the other. For species where the cost of successfully raising one offspring
384-440: The progeny. This relationship was confirmed on four plant species from three families – Rumex acetosa ( Polygonaceae ), Melandrium album (Caryophyllaceae), Cannabis sativa and Humulus japonicus ( Cannabinaceae ). In charadriiform birds, recent research has shown clearly that polyandry and sex-role reversal (where males care and females compete for mates) as found in phalaropes , jacanas , painted snipe and
408-480: The sex of the individual. In the American alligator , for example, females are hatched from eggs incubated between 27.7 to 30 °C (81.9 to 86.0 °F), whereas males are hatched from eggs 32.2 to 33.8 °C (90.0 to 92.8 °F). In this method, however, all eggs in a clutch (20–50) will be of the same sex. In fact, the natural sex ratio of this species is five females to one male. In birds, mothers can influence
432-414: The sex of their chicks. In peafowl , maternal body condition can influence the proportion of daughters in the range from 25% to 87%. Dichogamy (sequential hermaphroditism) is normal in several groups of fish, such as wrasses , parrotfish and clownfish . This can cause a discrepancy in the sex ratios as well. In the bluestreak cleaner wrasse , there is only one male for every group of 6-8 females. If
456-423: The sex ratio is approximately 1:1. His argument was summarised by W. D. Hamilton (1967) as follows, assuming that parents invest the same whether raising male or female offspring: In modern language, the 1:1 ratio is the evolutionarily stable strategy (ESS). This ratio has been observed in many species, including the bee Macrotera portalis . A study performed by Danforth observed no significant difference in
480-505: The south bank. In 1989 Kamrup district became home to the Dipor Bil Wildlife Sanctuary , which has an area of 4.1 km (1.6 sq mi). There is also a plantation where seedlings of teak, sal, sissu, sum, and nahor are reared, and experiments are being made with the caoutchouc tree. Kamrup is home to one of the few large colonies of greater adjutant storks still in existence. The villagers previously regarded
504-567: The south. The hills south of the Brahmaputra in some parts reach the height of 800 feet (240 m). The Brahmaputra, which divides the district into two nearly equal portions, is navigable by river steamers throughout the year, and receives several tributaries navigable by large native boats in the rainy season. The chief of these are the Manas, Chaul Khoya and Barnadi on the north, and the Kulsi and Dibru on
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#1732858542870528-513: The village of Langpih . In the immediate neighborhood of the Brahmaputra, the land is low and exposed to annual inundation. In this marshy tract reeds and canes flourish luxuriantly, and the only cultivation is that of rice. At a comparatively short distance from the river banks the ground begins to rise in undulating knolls towards the mountains of Bhutan on the north, and towards the Khasi hills on
552-471: The work of Eric Charnov . He defines five major questions, both for his book and the field in general (slightly abbreviated here): Biological research mostly concerns itself with sex allocation rather than sex ratio, sex allocation denoting the allocation of energy to either sex. Common research themes are the effects of local mate and resource competition (often abbreviated LMC and LRC, respectively). Fisher's principle (1930) explains why in most species,
576-666: Was created by bifurcating Undivided Kamrup district in 2003. The Government of Assam, during the Chief-ministership of Late Tarun Gogoi , had proposed to bifurcate it further and create a new district, named South Kamrup. In 2016, the process of creation of the district was started. However, later that year, the process of creation was stopped midway due to lack of infrastructure. Kamrup district occupies an area of 4,345 square kilometres (1,678 sq mi). Kamrup district has some territorial disputes with neighbouring West Khasi Hills district , Meghalaya , including that over
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