+ Site Statistics
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

Genetic diversity and mating system in a tropical tree, Carapa guianensis (Meliaceae)

Genetic diversity and mating system in a tropical tree, Carapa guianensis (Meliaceae)

American Journal of Botany 81(9): 1104-1111

Carapa guianensis Aublet. (Meliaceae) is an abundant, canopy tree species often exported as fine wood products. The populations in the Atlantic coastal plain of Costa Rica have undergone a wide variety of human-induced changes in distribution and abundance, including isolation due to deforestation. Using protein electrophoretic analysis of seeds, we investigated the genetic variability and population differentiation of nine populations and the outcrossing rate in two populations that differed in density by a factor of 50%. Average polymorphism (35%) and heterozygosity (0.12) across populations were relatively low in comparison with other tropical tree species. Only 4.6% of the total genetic variability could be attributed to population differentiation even though populations were separated by as much as 70 km. However, genetic differentiation did increase with distance between pairs of compared populations. There were no apparent differences in genetic variation between logged and unlogged forests. The outcrossing rate for each population was not significantly different from 1.0, but there was evidence of nonrandom mating in the lower density population. High levels of gene flow are probably maintained by seed dispersal as seeds travel well throughout flooded forests and rivers. High population density and synchronous flowering also contribute to high outcrossing rates. These genetic characteristics suggest that Carapa guianensis is a good candidate for natural forest management where it occurs at high density. However, current management practices need to account for the rapid rate of deforestation occurring around managed natural forest sites that will result in the elimination of intervening populations. Reprinted by permission of the publisher. .

Accession: 002390726

Download citation: RISBibTeXText

DOI: 10.2307/2445472

Download PDF Full Text: Genetic diversity and mating system in a tropical tree, Carapa guianensis (Meliaceae)

Related references

Population structure delineated with microsatellite markers in fragmented populations of a tropical tree, Carapa guianensis (Meliaceae). Molecular Ecology 8(10): 1585-1592, 1999

Genetic diversity and spatial structure within a natural stand of a tropical forest tree species, Carapa procera (Meliaceae), in French Guiana. Heredity 79(1): 72-82, 1997

Mating system of Carapa procera (Meliaceae) in the french guiana tropical forest. American Journal of Botany 84(4): 461-461, 1997

Carapa guianensis Aubl., possible alternative to the problem of the tropical Meliaceae borer. Turrialba 28(3): 179-186, 1978

Using isozyme markers to estimate mating system parameters and spatial genetic structure in Carapa procera, a tropical tree species. Belgian Journal of Botany 129(2): 162-163, 1997

Distinguishing Carapa guianensis Aubl. from Carapa procera D.C. (Meliaceae) by morphology of young seedlings. Acta Amazonica 1996; 25(3/4): 193-200, 1995

Simple storage methods for andiroba seeds (Carapa guianensis Aubl. e Carapa procera D.C.- Meliaceae). Acta Amazonica 26(3): 137-144, 1996

Molecular phylogeny, diversity, symbiosis and discover of bioactive compounds of endophytic fungi associated with the medicinal Amazonian plant Carapa guianensis Aublet (Meliaceae). Biochemical Systematics and Ecology 59: 36-44, 2015

Optical characteristics of tropical tree-leaves. I. Andiroba (Carapa guianensis Aubl.). Boletim do INPA, Pesquisas Florestais (3): 14, 1970

Optical characteristics of tropical tree leaves part 1 andiroba d carapa guianensis d. Boletim do INPA (Instituto Nacional de Pesquisas da Amazonia) Pesquisas Florestais (3): 1-14, 1970

Constituents of Carapa guianensis Aubl. (Meliaceae). Die Pharmazie 59(6): 488-490, 2004

Andirolides W-Y from the flower oil of andiroba (Carapa guianensis, Meliaceae). Fitoterapia 100: 81-87, 2015

Andirolides Q-V from the flower of andiroba (Carapa guianensis, Meliaceae). Fitoterapia 90: 20-29, 2014

Carapanolides C-I from the seeds of andiroba (Carapa guianensis, Meliaceae). Fitoterapia 96: 56-64, 2015

Andirolides Qa V from the flower of Andiroba Carapa guianensis, Meliaceae. 2013