SOUTH AFRICAN JOURNAL OF WILDLIFE RESEARCH, 42 (1). vineum currently diversity may also be more likely to be important for supports a substantial amount of genetic variation other types of genetic diversity. Decoupling of Sexual Reproduction and Genetic Diversity in the Female-Biased Mojave Desert Moss Syntrichia caninervis (Pottiaceae) Amber Elizabeth Paasch, Brent D. Mishler, Sonia Nosratinia, Lloyd R. Stark, and ; Kirsten M. Fisher, and ; Editor: Jeremiah Busch The following popula- at both the species and population levels. 1998 ). In Kozik EU and Paris HS (eds.). Substantial genetic diversity exists in the natural populations of desert teak which needs to be conserved in-situ as well as ex-situ to ensure sustainable utilization and survival of … netic stage, genetic diversity might decrease. @article{Badr2018GeneticDO, title={Genetic Diversity of Colocynth (Citrullus colocynthis Schrader) Populations in the Eastern Desert of Egypt as Revealed by Morphological Variation and ISSR Polymorphism}, author={A. Badr and M. Kamel and H. Zaki}, journal={Feddes Repertorium}, year={2018}, volume={129}, pages={173-184} } To understand the extent of genetic diversity, genetic structure and differentiation among H. salicornicum populations occurring in different geographic regions of Kuwait, the PCR-based ISSR markers, were selected based on their applicability in desert plants that were used for both inter- and intra-population analysis [20–23]. Populations that are 349 high in multiple measures of allozyme-based genetic In summary, E. ovalifolium var. Aim: Sewan grass (Lasiurus sindicus Henr. As expected, the results showed that the coastal bees have high levels of genetic diversity, due to the intensive apiculture industry there, which allows large numbers of bees to intermingle. Genetic diversity is important for the chances of survival for a particular species of plants and animals, such as a snapdragon or a polar bear. Cucurbitaceae 2016, XIth EUCARPIA Meeting on Genetics and Breeding of Cucurbitaceae, July 24-28, 2016, Warsaw, Poland. Research Article Genetic diversity and structure of an endangered desert shrub and the implications for conservation Zhihao Su1*, Bryce A. Richardson2, Li Zhuo3, Xiaolong Jiang4, Wenjun Li1 and Xiaoshan Kang1 1Key Laboratory of Biogeography and Bioresource in Arid Land, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, no. This grass is extremely drought resistant and thrives even in areas receiving very low rainfall (100 to 150 mm) annually under extreme temperatures ranging from -3 to 50°C. ), considered as the "King of Desert Grasses", is a dominant grass species of hot arid ecosystem of Great Indian Desert, covering Western Rajasthan and parts of Pakistan. Genetic diversity describes the amount of variation in the gene pool for a specific species. How desert travel saved the camel’s genetic diversity. Conservation and utilization of these tomato relatives would benefit from an understanding of genetic diversity and relationships within and between populations. Genetic Diversity. Methodology. Hence, studies along gradients of disturbance and understanding relationships among variables in a causal framework are important to detect these processes. The genetic diversity we have discovered, thanks to restocking from wild ‘ghost’ dromedary populations, is quite remarkable in the history of its domestication. Consequently, this may cause a loss of genetic diversity through genetic drift by increasing the genetic isolation and inbreeding (Ellstrand and Elam 1993; Frankham 1995; England et al. pp. Genetic Diversity in the Desert Warthog (Phacochoerus aethiopicus delameri) Population in Eastern Africa Mwanika, V B and Kock, R A and Masembe, C and Siegismund, H R (2012) Genetic Diversity in the Desert Warthog (Phacochoerus aethiopicus delameri) Population in Eastern Africa. Key message. Our findings link a rapid reduction in genetic diversity (up to 15%) to as … Full text not available from this repository. Long‐term evolutionary history and demographic processes shape current patterns of genetic variation in natural populations. While human impacts are the leading cause of genetic diversity loss in many cases, scientists studying the lions found that diversity loss across the population was instead caused by the lions’ need to adapt to differing habitats. We used allozyme electrophoresis to quantify genetic variation in nine populations of the Gammarus pecos species complex endemic to spring systems of the northern Chihuahuan Desert. This is due to the fact that species with greater genetic diversity generally have more tools to adapt to changes within its environment. 2002). However, genetic diversity might also increase because of a preferred elimination of genets with a high degree of homozygosity, or it might re- main unaltered because of random elimination of genotypes ( Soane and Watkinson, 1979 ; Eriksson, 1993 ). The loss of genetic diversity will in turn weaken the fitness of populations, increasing the vulnerability to extinction ( Newman and Pilson 1997 ; Saccheri et al. 2 (Table 1). Just as regions of high species diversity are conservation targets, identifying regions containing high genetic diversity and divergence within and among populations may be important to protect future evolutionary potential. Methods: Levels of genetic diversity and population genetic structure were investigated by genotyping representative accessions of each species with a set of simple sequence repeat (SSR) and allozyme markers. p. 105-108. The local people or farmers are not showing any interest to preserve the natural way of genetic diversity. This study helps define the role of reproductive modes in producing and maintaining genetic diversity. We used partial Mantel tests, multiple linear regression and coalescent simulations to infer changes in gene flow and diversity of nuclear and mitochondrial DNA markers. Refuge populations of Cyprinodon macularius and Cyprinodon eremus, the extant members of the endangered desert pupfish complex, have been maintained for up to … The genetic diversity of Addax nasomaculatus in reintroduced and ex-situ managed populations Marwell Wildlife, Al Ain Zoo , the Royal Zoological Society of Scotland and San Diego Zoo Global have initiated a project with the Tunisian Direction Générale des Forêts to evaluate the genetic diversity of addax across global ex-situ populations and the Tunisian metapopulation. 54-59. It underlines the animal’s potential to adapt sustainably to future challenges of expanding desert areas and global climate change.” Scientists in many parts of the world are trying to introduce genetically modified seeds in the agriculture sector for better yield as well as for the resistance of drought and flood situations. Phylogeographical study reveals high genetic diversity in a widespread desert rodent, Dipus sagitta (Dipodidae: Rodentia) February 2018 Biological Journal of the Linnean Society 123(2):445-462 4.1. Genetic variability is an important component in the ability of populations to evolve and adapt to changing environmental conditions and consequently for their long-term survival. A major finding of this study was that genetic diversity in the COI gene segment of Cx. Here we compare genetic diversity in four Mojave Desert populations of the moss Syntrichia caninervis to assess the degree to which sexual reproduction is associated with genotypic diversity. Desert plants play a key role, as the primary producers, in maintaining these ecosystems. GENETIC DIVERSITY IN CHIHUAHUAN DESERT POPULATIONS OF CREOSOTEBUSH (ZYGOPHYLLACEAE: LARREA TRIDENTATA)1 KRISTY L. DURAN,2,6 TIMOTHY K. LOWREY,3 ROBERT R. PARMENTER,4 AND PAUL O. LEWIS5 2Department Biology, 6500 College Station, Bowdoin College, Brunswick, Maine 04011 USA; 3Department of Biology, University of New Mexico, Albuquerque, New Mexico 87131 USA; 4Valles … Genetic diversity and structure of an endangered desert shrub and the implications for conservation Zhihao Su, Zhihao Su 1 ... Genetic diversity index, including the number of alleles per locus corrected for the sample size (A), observed heterozygosity (H O) and unbiased expected heterozygosity (H E) corrected for the sample size, were calculated within the groups. We analysed the effects of such barriers on connectivity and genetic diversity of 27 populations of Ovis canadensis nelsoni (desert bighorn sheep). And domestication may have saved the animals from extinction a new comparison of ancient and modern DNA has found. Genetic and phenotypic diversity in 2000 years old maize (Zea mays L.) samples from the Tarapacá region, Atacama Desert, Chile Ale Vidal Elgueta , Contributed equally to this work with: Ale Vidal Elgueta, Luis Felipe Hinojosa, María Fernanda Pérez Generally, genetic diversity losses were associated with a reduction in parental fitness, which in turn affected offspring genetic diversity and increased seedlings mortality. A study on genetic diversity of C. polygonoides in the Thar Desert is prerequisite to reveal the ecological and genetic consequences and to preserve the biodiversity, while an analysis for chemical parameters would help in selection of plants with higher nutritional values. Publication: Journal of Arid Environments. Desert bighorn populations that were completely isolated by highways fared the worst: they were estimated to have lost as much as 15 percent of their genetic diversity in only about 40 years. Genetic Diversity in the Desert Watermelon Citrullus colocynthis and its Relationship with Citrullus Species as Determined by High-frequency Oligonucleotides-targeting Active Gene Markers in Journal of the American Society for Horticultural Science. Phylogeography and Genetic Diversity in a Southern North American Desert: Agave kerchovei From the Tehuacán-Cuicatlán Valley, Mexico ... being one of the main reservoirs of biological diversity for the arid zones of North America, including the highest diversity of Agavaceae worldwide and high levels of endemism. tarsalis and Culex sp. Genetic diversity in the desert: patterns and testable hypotheses Nevo, Eviatar; Beiles, Avigdor; Abstract. They examined 15 genetic markers which indicate the mating frequency, colony density and gene diversity of the bees in each colony and the extent to which their populations have changed over time. Utilizing genetic diversity in the desert watermelon citrullus colocynthis for enhancing watermelon cultivars for resistance to biotic and abiotic stress. The presence of barriers was the equivalent of increasing the distance between desert bighorn populations by 40 km, which would effectively stop gene flow between populations. 1 and sp. Genetic diversity is the whole basis for a sustainable life system in the earth. Conservation of the genetic resources of endemic desert plants is crucial to worldwide efforts to combat desertification, to prevent further degradation of the fragile ecosystems in arid and semi-arid regions and to sustain biodiversity in deserts. Abstract: Genetic diversity within species provides the raw material for adaptation and evolution. quinquefasciatus from the Sonoran Desert was much lower than that seen in Cx. , Eviatar ; Beiles, Avigdor ; Abstract system in the gene pool for specific. 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