Spatial Pattern and Fine-Scale Genetic Structure Indicating Recent Colonization of the Palm Euterpe edulis in a Brazilian Atlantic Forest Fragment

Vieira, Fábio de Almeida; Carvalho, Dulcinéia de; Higuchi, Pedro; Machado, Evandro Luiz Mendonça; Santos, Rubens Manoel dos

doi:10.1007/s10528-009-9298-3

Cited by 14 publications

(8 citation statements)

References 31 publications

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“…The positive and significant kinship found in the first-distance class of the total population (12.3 m) is similar to the results found by Vieira et al (2010) in a study with the palm tree E. edulis, in which they reported positive coancestry up to 15 m. These results indicate an increase in the genetic structure among nearby individuals. Choo et al (2012) analyzing the Attalea phalerata Mart.…”

Section: Spatial Genetic Structuresupporting

confidence: 87%

“…Similar results were reported by Silva et al (2014) in a study with C. prunifera carried out in the municipality of Lagoa de Pedras, RN, and the authors suggest that the aggregate distribution pattern in the first-distance classes is related to restricted dispersion around parent trees. Vieira et al (2010), working with Euterpe edulis Martius (Arecaceae), also suggest that the aggregate distribution in the first-distance classes relates to the dispersion of seeds near to parental plants.…”

Section: Demographic Structurementioning

confidence: 98%

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Research Article Anthropization as a determinant factor in the genetic structure of Copernicia prunifera (Arecaceae).

et al. 2017

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ABSTRACT. This study uses ISSR molecular markers to characterize the demographic pattern, and spatial genetic structure (SGS) at different life stages of development (cohorts) in a natural population of Copernicia prunifera in the Rio Grande do Norte State, Brazil. All individuals were sampled and georeferenced in a 0.55-ha plot. The demographic analyses showed a clustered pattern in the first-distance classes and a random or segregated pattern at higher distance classes for all cohorts. Among the three studied life stages, juveniles showed the greatest value for Nei's genetic diversity index (H E = 0.369), while the lowest was found among reproductive adults (H E = 0.341). Greater genetic differentiation was found within life stages (98.61%) than among stages (1.39%). The total population (N = 161) showed positive and significant kinship in the first-distance class (12.3 m). The juveniles showed significant kinship up to 10.5 m. Non-reproductive adults had a positive kinship in the first-distance class (11.0 m) and a random distribution of genotypes in the remaining classes, while reproductive adults showed a random spatial distribution of genotypes. Tests for genetic bottleneck showed that the number of loci with excess observed heterozygosity was greater than expected. The SGS results reflected the restricted seed dispersion of the species, and the genetic bottleneck reflected the reduction of genotypes as a result of the anthropization of C. prunifera natural environments.

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Section: Spatial Genetic Structuresupporting

confidence: 87%

Section: Demographic Structurementioning

confidence: 98%

Research Article Anthropization as a determinant factor in the genetic structure of Copernicia prunifera (Arecaceae).

et al. 2017

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“…This conclusion is supported by the test for genetic bottleneck, discussed below. The significant differences between the levels of genetic diversity across generations within the population might be the result of natural selection or influx of genotypes from other populations (Epperson and Alvarez-Buylla, 1997;Vieira et al, 2010). Vieira et al (2012) noted that environmental disturbances, limited seed dispersal near the mother plant, and low density of reproductive adults can determine the varying levels of relatedness between individuals and between life stages, as well as the degree of genetic diversity of the population.…”

Section: Discussionmentioning

confidence: 99%

Increased relatedness among the neighboring plants from seedling to adult stages in carnaúba wax palm

et al. 2016

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ABSTRACT. The objective of this study was to assess the spatial genetic structure (SGS) at different life stages (cohorts) in a remnant population (N = 101) of Copernicia prunifera in the semiarid region of northeastern Brazil. Using seven inter-simple sequence repeat molecular markers, we were able to analyze 93 loci with 100% polymorphism. Seedlings had the highest level of genetic diversity (H E = 0.411, H O = 0.599), followed by juveniles (H E = 0.394, H O = 0.579) and adults (H E = 0.267, H O = 0.427). Based on analysis of molecular variance, the majority of genetic variations were observed to occur within the life stages (93.42%) rather than between the life stages (6.58%). We found a recent reduction in the population size (bottleneck) based on the number of loci with heterozygosity excess for the two models used (infinite allele = 92 and stepwise = 91). All the life stages showed significant SGS, with positive and significant kinship values. Sp values were 0.040 for seedlings, 0.093 for juveniles, 0.156 for adults, and 0.053 for the total population. We found an increase in SGS from the seedling to adult stages, indicating that the plants were from related adult progenitors. Data from this study can be used in designing effective management and conservation strategies for the species.

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“…International Journal of Forestry Research colonization history [14,30]. The failure to detect genetic structure within populations may be due to the adult density (average = 232 individuals • ha −1 ), intraspecific competition or random mortality among samplings, resulting in extensive thinning within maternal half-sib groups.…”

Section: Landscape-level Andmentioning

confidence: 99%

Landscape-Level and Fine-Scale Genetic Structure of the Neotropical TreeProtium spruceanum(Burseraceae)

Vieira

Fajardo

Souza

et al. 2010

International Journal of Forestry Research

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Knowledge of genetic structure at different scales and correlation with the current landscape is fundamental for evaluating the importance of evolutionary processes and identifying conservation units. Here, we used allozyme loci to examine the spatial genetic structure (SGS) of 230 individuals ofProtium spruceanum, a native canopy-emergent in five fragments of Brazilian Atlantic forest (1 to 11.8 ha), and four ecological corridors (460 to 1 000 m length). Wright's statistic and Mantel tests revealed little evidence of significant genetic structure at the landscape-scale (; , ). At fine-scale SGS, low levels of relatedness within fragments and corridors (, ) were observed. Differences in the levels and distribution of the SGS at both spatial scales are discussed in relation to biological and conservation strategies of corridors and forest fragments.

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Spatial Pattern and Fine-Scale Genetic Structure Indicating Recent Colonization of the Palm Euterpe edulis in a Brazilian Atlantic Forest Fragment

Cited by 14 publications

References 31 publications

Research Article Anthropization as a determinant factor in the genetic structure of Copernicia prunifera (Arecaceae).

Research Article Anthropization as a determinant factor in the genetic structure of Copernicia prunifera (Arecaceae).

Increased relatedness among the neighboring plants from seedling to adult stages in carnaúba wax palm

Landscape-Level and Fine-Scale Genetic Structure of the Neotropical TreeProtium spruceanum(Burseraceae)

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