A Research Study On Conservation Genetics - 2498 Words

Introduction Conservation genetics is actually a recent evolutionary theory and practise of genetics on species in order to reduce their risk of extinction. Some relevant studies improve the role of conservation genetics in specific type of species. There are so many long-lived species worldwide, either amphibians or mammals which nowadays are limited and also distributed in certain areas. Most of them can be found into small, fragmented isolated populations due to pollution, invasion of exotic species, over-exploitation and most important due to habitat loss (Frankham et al 1999). Their amazing long life span shows both advantages and disadvantages. More living diverse species means more stable ecosystem and regular flow of the food†¦show more content†¦Advanced genetic tools using mtDNA, microsatellite markers, protein and some other implements related to genetics, results to significant information of which scientists interpret to conserve species facing current threats. Bears The carnivorous Grizzly bear (Ursus arctos L.) is a North American subspecies of the brown bear and is nowadays the most widely distributed ursid. Nielsen et al (2006), likens the Grizzly bears as keystone species suitable for discovering conservation habitat modelling from a survival and occupancy framework. During the past century their population have declined noticeably throughout much of North America, mainly due to susceptibility from low density, high trophic level, low reproductive rates and late maturation. Also, the increased illegal human access causes the mortality of most of the grizzly bears. Their demographies has also been changed; the brown bear in the lower 48 states has been reduced to 1% of its original area. The estimated population size has fallen from 100,000 in the early 19th century to 1000 in 1986 (Waits et al 1998). Trophy hunting is