Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches
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 population...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Universidad de Costa Rica
2010-12-01
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| Series: | Revista de Biología Tropical |
| Subjects: | |
| Online Access: | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442010000400018&lng=en&tlng=en |
| _version_ | 1827161872645750784 |
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| author | Felipe Benavides Jorge Burbano Diana Burbano Rodrigo Prieto Carlos Torres |
| author_facet | Felipe Benavides Jorge Burbano Diana Burbano Rodrigo Prieto Carlos Torres |
| author_sort | Felipe Benavides |
| collection | DOAJ |
| description | 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. Rev. Biol. Trop. 58 (4): 1261-1270. Epub 2010 December 01. |
| first_indexed | 2024-03-12T10:41:56Z |
| format | Article |
| id | doaj.art-aaeae588fe5f430091b08ea2d0909f89 |
| institution | Directory Open Access Journal |
| issn | 0034-7744 |
| language | English |
| last_indexed | 2025-03-21T00:35:49Z |
| publishDate | 2010-12-01 |
| publisher | Universidad de Costa Rica |
| record_format | Article |
| series | Revista de Biología Tropical |
| spelling | doaj.art-aaeae588fe5f430091b08ea2d0909f892024-08-03T06:43:06ZengUniversidad de Costa RicaRevista de Biología Tropical0034-77442010-12-0158412611270S0034-77442010000400018Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approachesFelipe Benavides0Jorge Burbano1Diana Burbano2Rodrigo Prieto3Carlos Torres4Universidad de NariñoUniversidad de NariñoUniversidad de NariñoUniversidad del TolimaUniversidad de NariñoThe 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. Rev. Biol. Trop. 58 (4): 1261-1270. Epub 2010 December 01.http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442010000400018&lng=en&tlng=endivergencia inter-poblacionalmorfometría foliarvicarianzaEspeletia pycnophyllapáramosdescriptores elípticos de Fourier |
| spellingShingle | Felipe Benavides Jorge Burbano Diana Burbano Rodrigo Prieto Carlos Torres Inferring possible population divergence in Espeletia pycnophylla (Asteraceae) through morphometric and paleogeographic approaches Revista de Biología Tropical divergencia inter-poblacional morfometría foliar vicarianza Espeletia pycnophylla páramos descriptores elípticos de Fourier |
| title | 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_short | 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 |
| topic | divergencia inter-poblacional morfometría foliar vicarianza Espeletia pycnophylla páramos descriptores elípticos de Fourier |
| url | http://www.scielo.sa.cr/scielo.php?script=sci_arttext&pid=S0034-77442010000400018&lng=en&tlng=en |
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