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Mostrando ítems 16006-16025 de 34169
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Genetic analysis of the dry forest timber tree Sideroxylon capiri in Costa Rica using AFLP
(2015-01)Sideroxylon capiri (“Tempisque”) is a threatened and economically important timber species in the dry forest of Costa Rica. To assess the extent of the genetic diversity between and within populations of this species, 86 ... -
Genetic And Morphological Variation Of The Sooty-capped Bush Tanager (Chlorospingus Pileatus), A Highland Endemic Species From Costa Rica And Western Panama
(2010)We examined the effect of geographic isolation on morphology, genetic structure, and abundance of the Sooty-capped Bush Tanager (Chlorospingus pileatus), an endemic species restricted to highlands of Costa Rica and western ... -
Genetic and toxinological divergence among populations of Tityus trivittatus Kraepelin, 1898 (Scorpiones: Buthidae) inhabiting Paraguay and Argentina
(2020)Envenoming by scorpions in genus Tityus is a public health problem in Tropical America. One of the most medically significant species is Tityus trivittatus, which is known to occur from southwest Brazil to central-northern ... -
Genetic contributions to circadian activity rhythm and sleep pattern phenotypes in pedigrees segregating for severe bipolar disorder
(2016-02-09)Abnormalities in sleep and circadian rhythms are central features of bipolar disorder (BP), often persisting between episodes. We report here, to our knowledge, the first systematic analysis of circadian rhythm activity ... -
Genetic Diversification and Dispersal of Taro (Colocasia esculenta (L.) Schott)
(2016-06-17)Taro (Colocasia esculenta (L.) Schott) is widely distributed in tropical and sub-tropical areas. However, its origin, diversification and dispersal remain unclear. While taro genetic diversity has been documented at the ... -
Genetic diversity analysis of jatropha species from Costa Rica using AFLP markers
(2015)The genetic diversity from species of the genus Jatropha collected from Costa Rica was analyzed by AFLP (amplified fragments length polymorphism). The study consisted of 114 accessions from 15 populations of 4 different ... -
Genetic diversity analysis of the endangered slipper orchid Phragmipedium longifolium in Costa Rica
(2010-12)Phragmipedium longifolium is an endangered terrestrial orchid. In Costa Rica, these plants are found growing in small and isolated patches, some of them consisting of just four to six individuals. Information about the ... -
Genetic diversity and evolution of the human leptin locus tetranucleotide repeat
(Hum Genet 110; p. 412-417, 2002)To better understand the evolutionary history of the gene region containing the multifunctional adipose tissue hormone leptin, we genotyped 1,957 individuals from 12 world populations for a highly variable tetranucleo ... -
Genetic diversity and geographic distribution of Bemisia tabaci and Trialeurodes vaporariorum in Costa Rica
(2019)The tobacco whitefly Bemisia tabaci (Gennadius) cryptic species complex and of the greenhouse whitefly Trialeurodes vaporariorum (Westwood) are extensively reported as destructive pests in vegetable crops worldwide. A ... -
Genetic diversity and reproductive biology of the dioecious and epiphytic bromeliad Aechmea mariae-reginae (Bromeliaceae) in Costa Rica: implications for its conservation
(2019)Ecological traits and pollination mode associated with dioecious sexual expression in plants are likely to influence their reproductive success and levels of genetic diversity. Dioecy is an uncommon condition in Bromeliaceae. ... -
Genetic Diversity and Spatial Genetic Structure of an Epiphytic Bromeliad in Costa Rican Montane Secondary Forest Patches
(2014)Information on genetic variation and its distribution in tropical plant populations relies mainly on studies of ground‐rooted species, while genetic information of epiphytic plants is still limited. Particularly, the effect ... -
Genetic diversity in Oryza glumaepatula wild rice populations in Costa Rica and possible gene flow from O. sativa
(2016-04-07)Wild crop relatives are an important source of genetic diversity for crop improvement. Diversity estimates are generally lacking for many wild crop relatives. The objective of the present study was to analyze how genetic ... -
Genetic diversity in the endangered tropical tree, Guaiacum sanctum (Zygophyllaceae)
(2010)Fragmentation of tropical forests has changed continuous tropical landscapes into a network of poorly connected fragments, reducing population sizes and potentially increasing genetic isolation. This study quantifies genetic ... -
Genetic Diversity of Xylella fastidiosa Strains from Costa Rica, São Paulo, Brazil, and United States
(2007-10)The diversity of 42 Xylella fastidiosa strains from Costa Rica, São Paulo, Brazil, and the United States were analyzed using the sequence of the 16S rRNA gene by variable number of tandem repeat (VNTR) fragment analysis ... -
Genetic polymorphism of CYP1A2 increases the risk of myocardial infarction
(2004)There is growing evidence that DNA damage caused by mutagens found in tobacco smoke may contribute to the development of coronary heart disease (CHD). In order to bind to DNA many mutagens require metabolic activation by ...