Assessment of genetic differentiation among relict populations of Calophyllum brasiliense Camb. (Calophyllaceae) from Northeast Argentina
Journal Title: Journal of Biodiversity and Environmental Sciences (JBES) - Year 2014, Vol 5, Issue 6
Abstract
Calophyllum brasiliense is a tropical tree that grows exclusively in riparian forest and in almost permanently flooded areas. In Argentina two small populations located within riparian forest from Misiones and Corrientes Provinces have been recently identified. These riparian communities have been extensively fragmented and are at risk of local extinction due to flooding caused by a nearby dam and other anthropogenic changes that threaten this habitat. Genetic characterization using information from 56 RAPD loci revealed low expected heterozygosity in both populations (He = 0.273). Most genetic variability was distributed within populations, and a significant ϕST statistic value (0.283, p<0.05) showed the existence of a large genetic differentiation between them. Furthermore, the SGS analysis revealed a nonrandom distribution of genotypes in Misiones’ population. Although these populations could have belonged to a large and continuous forest in the past, the process of habitat fragmentation may have favoured the divergence between them; sufficient time has passed to cause their genetic differentiation. As these populations represent the new southernmost species distribution, the genetic information obtained in this study should be analyzed in conjunction with ecological evaluations in order to develop management strategies that can ensure its conservation.
Authors and Affiliations
Cecilia Beatriz Percuoco, Gustavo Ángel Bich, Liliana Noelia Talavera Stéfani, Alicia Elba Cardozo, Manuela Edith Rodríguez, Naiké Lucía González, Claudia Beatriz Sorol, Juan Fernando Crivello, Jorge Víctor Crisci, Carina Francisca Argüelles
Keywords
Related Articles
- EP ID EP38073
- DOI -
- Views 127
- Downloads 0
Morphometric evaluation of an indigenous fish belong to genus Devario from three river systems of South Kerala
Morphometric parameters, length-weight relationship and condition factor of indigenous fish belong to Devario genus, with great export and economic potential was evaluated from three different river systems of South Kera...
Effect of soil use and spraying of potassium sulfate and different irrigation intervals on grain related trains in maize 704 in Khoda Afarin
This study was conducted in khoda Afarin in 2012 Ordibehesht aiming at evaluating of using this element as a soil and spraying it in two stages of development and Tassel formation various water condition in maize single...
Spatial distribution of Hymenoptera under the rain-fed conditions of Habis valley, Northwestern Coast, Matrouh Governorate, Egypt
Valleys in the Egyptian Northwestern Coast are widely subjected to different human activities which may represent a major threat to biodiversity. Lack of studies documenting the entomofauna of these valleys was the motiv...
Monitoring of Rangeland vegetation changes in Alborz Province(Iran) using the simple ratio index
Vegetational dispersion and rate of changes over the time, showing the ecosystem succession is in regressive or progressive process. There are several ways of checking for changes of vegetation such as field studies and...
Prediction of the desertification variation trend in Haj Ali Gholi desert basin for 2030 and 2045
Nowadays, prediction of the desertification variation trend used to explain the drought status for the next decades. In this study, using Landsat time series images, desertification variation trend in Haj Ali Gholi basin...