Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches
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Universidad de Costa Rica
2010
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| Online Access: | https://revistas.ucr.ac.cr/index.php/rbt/article/view/5410 |
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RBT54102022-06-06T18:38:15Z Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches Benavides, Felipe Burbano, Jorge Burbano, Diana Prieto, Rodrigo Torres, Carlos divergencia inter-poblacional morfometría foliar vicarianza Espeletia pycnophylla páramos descriptores elípticos de Fourier population divergence leaf morphometry vicariance paramos elliptic fourier descriptors The phenotypic structure within and between plant populations is generally influenced by their distribution patterns in space and time; therefore, the study of their divergence is a central issue for the understanding of their microevolutive processes. We boarded the hypothesis that three populations of Espeletia pycnophylla show phenotypic divergence as one of the possible implications of their geographic isolation in the Southern Colombian Andes. We used the Elliptic Fourier Descriptors (leaf shape) and traditional leaf morphometry (leaf size) of 347 leaves to measure inter and intra-population variation and a comparison between a paleogeographic reconstruction with an actual estimate of the distribution areas of E. pycnophylla in order to identify their main changes during the last 14 000 years. The three populations showed significant differences in leaf morphometry and a positive correlation between the matrices of morphometric and geographic dissimilarities, indicating that the inter-population divergence increases between further populations, so that the morphometric structure reflects their spatial distribution. The geographical and paleogeographical estimates evidenced a conspicuous process of reduction and fragmentation of the distribution area of E. pycnophylla since the Late-Glacial until the Holocene. We suggest that these results support possible scenarios of vicariance events, which allow us to approach the divergence of these populations in terms of their historic biogeographic relations. However, genetic analyses are still needed to support these results. Universidad de Costa Rica 2010-12-01 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Article Text application/pdf https://revistas.ucr.ac.cr/index.php/rbt/article/view/5410 10.15517/rbt.v58i4.5410 Revista de Biología Tropical; Vol. 58 No. 4 (2010): Volume 58 – Regular number 4 – December 2010; 1261–1270 Revista de Biología Tropical; Vol. 58 Núm. 4 (2010): Volumen 58 – Número regular 4 – Diciembre 2010; 1261–1270 Revista Biología Tropical; Vol. 58 N.º 4 (2010): Volume 58 – Regular number 4 – December 2010; 1261–1270 2215-2075 0034-7744 10.15517/rbt.v58i4 eng https://revistas.ucr.ac.cr/index.php/rbt/article/view/5410/5156 Copyright (c) 2010 Revista de Biología Tropical http://creativecommons.org/licenses/by/4.0 |
| institution |
Universidad de Costa Rica |
| collection |
Revista de Biología Tropical |
| language |
eng |
| format |
Online |
| author |
Benavides, Felipe Burbano, Jorge Burbano, Diana Prieto, Rodrigo Torres, Carlos |
| spellingShingle |
Benavides, Felipe Burbano, Jorge Burbano, Diana Prieto, Rodrigo Torres, Carlos Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches |
| author_facet |
Benavides, Felipe Burbano, Jorge Burbano, Diana Prieto, Rodrigo Torres, Carlos |
| author_sort |
Benavides, Felipe |
| title |
Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches |
| title_short |
Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches |
| title_full |
Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches |
| title_fullStr |
Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches |
| title_full_unstemmed |
Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches |
| title_sort |
inferring possible population divergence in espeletia pycnophylla (asteraceae) through morphometric and paleogeographic approaches |
| title_alt |
Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches |
| publisher |
Universidad de Costa Rica |
| publishDate |
2010 |
| url |
https://revistas.ucr.ac.cr/index.php/rbt/article/view/5410 |
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