Effective gene dispersal and female reproductive success in Mediterranean maritime pine (Pinus pinaster Aiton)
Understanding population-scale processes that affect allele frequency changes across generations is a long-standing interest in genetic, ecological and evolutionary research. In particular, individual differences in female reproductive success and the spatial scale of gene flow considerably affect evolutionary change and patterns of local selection. In this study, a recently developed maximum-likelihood (ML) method based on established offspring, the Seedling Neighbourhood Model, was applied and exponentially shaped dispersal kernels were fitted to both genetic and ecological data in a widespread Mediterranean pine, Pinus pinaster Aiton. The distribution of female reproductive success in P. pinaster was very skewed (about 10% of trees mothered 50% of offspring) and significant positive female selection gradients for diameter (γ = 0.7293) and cone crop (γ = 0.4524) were found. The selective advantage of offspring mothered by bigger trees could be due to better-quality seeds. These seeds may show more resilience to severe summer droughts and microsite variation related to water and nutrient availability. Both approaches, ecological and of parentage, consistently showed a long-distance dispersal component in saplings that was not found in dispersal kernels based on seed shadows, highlighting the importance of Janzen-Connell effects and microenvironmental variation for survival at early stages of establishment in this Mediterranean key forest tree. © 2006 The Authors.
Main Authors: | , , , , , |
---|---|
Format: | artículo biblioteca |
Language: | English |
Published: |
Wiley
2006
|
Subjects: | Dispersal kernels, Female reproductive success, Gene immigration, Inverse modelling, Mediterranean pines, Microsatellites, Selection gradients, |
Online Access: | http://hdl.handle.net/20.500.12792/5163 http://hdl.handle.net/10261/290282 |
Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
id |
dig-inia-es-10261-290282 |
---|---|
record_format |
koha |
spelling |
dig-inia-es-10261-2902822023-02-17T08:29:16Z Effective gene dispersal and female reproductive success in Mediterranean maritime pine (Pinus pinaster Aiton) González-Martínez, S. C. Burczyk, J. Nathan, R. Nanos, N. Gil, L. Alía Miranda, Ricardo Dispersal kernels Female reproductive success Gene immigration Inverse modelling Mediterranean pines Microsatellites Selection gradients Understanding population-scale processes that affect allele frequency changes across generations is a long-standing interest in genetic, ecological and evolutionary research. In particular, individual differences in female reproductive success and the spatial scale of gene flow considerably affect evolutionary change and patterns of local selection. In this study, a recently developed maximum-likelihood (ML) method based on established offspring, the Seedling Neighbourhood Model, was applied and exponentially shaped dispersal kernels were fitted to both genetic and ecological data in a widespread Mediterranean pine, Pinus pinaster Aiton. The distribution of female reproductive success in P. pinaster was very skewed (about 10% of trees mothered 50% of offspring) and significant positive female selection gradients for diameter (γ = 0.7293) and cone crop (γ = 0.4524) were found. The selective advantage of offspring mothered by bigger trees could be due to better-quality seeds. These seeds may show more resilience to severe summer droughts and microsite variation related to water and nutrient availability. Both approaches, ecological and of parentage, consistently showed a long-distance dispersal component in saplings that was not found in dispersal kernels based on seed shadows, highlighting the importance of Janzen-Connell effects and microenvironmental variation for survival at early stages of establishment in this Mediterranean key forest tree. © 2006 The Authors. 2023-02-17T08:29:16Z 2023-02-17T08:29:16Z 2006 artículo Molecular Ecology 15(14): 4577-4588 (2006) 0962-1083 http://hdl.handle.net/20.500.12792/5163 http://hdl.handle.net/10261/290282 10.1111/j.1365-294X.2006.03118.x 1365-294X en none Wiley |
institution |
INIA ES |
collection |
DSpace |
country |
España |
countrycode |
ES |
component |
Bibliográfico |
access |
En linea |
databasecode |
dig-inia-es |
tag |
biblioteca |
region |
Europa del Sur |
libraryname |
Biblioteca del INIA España |
language |
English |
topic |
Dispersal kernels Female reproductive success Gene immigration Inverse modelling Mediterranean pines Microsatellites Selection gradients Dispersal kernels Female reproductive success Gene immigration Inverse modelling Mediterranean pines Microsatellites Selection gradients |
spellingShingle |
Dispersal kernels Female reproductive success Gene immigration Inverse modelling Mediterranean pines Microsatellites Selection gradients Dispersal kernels Female reproductive success Gene immigration Inverse modelling Mediterranean pines Microsatellites Selection gradients González-Martínez, S. C. Burczyk, J. Nathan, R. Nanos, N. Gil, L. Alía Miranda, Ricardo Effective gene dispersal and female reproductive success in Mediterranean maritime pine (Pinus pinaster Aiton) |
description |
Understanding population-scale processes that affect allele frequency changes across generations is a long-standing interest in genetic, ecological and evolutionary research. In particular, individual differences in female reproductive success and the spatial scale of gene flow considerably affect evolutionary change and patterns of local selection. In this study, a recently developed maximum-likelihood (ML) method based on established offspring, the Seedling Neighbourhood Model, was applied and exponentially shaped dispersal kernels were fitted to both genetic and ecological data in a widespread Mediterranean pine, Pinus pinaster Aiton. The distribution of female reproductive success in P. pinaster was very skewed (about 10% of trees mothered 50% of offspring) and significant positive female selection gradients for diameter (γ = 0.7293) and cone crop (γ = 0.4524) were found. The selective advantage of offspring mothered by bigger trees could be due to better-quality seeds. These seeds may show more resilience to severe summer droughts and microsite variation related to water and nutrient availability. Both approaches, ecological and of parentage, consistently showed a long-distance dispersal component in saplings that was not found in dispersal kernels based on seed shadows, highlighting the importance of Janzen-Connell effects and microenvironmental variation for survival at early stages of establishment in this Mediterranean key forest tree. © 2006 The Authors. |
format |
artículo |
topic_facet |
Dispersal kernels Female reproductive success Gene immigration Inverse modelling Mediterranean pines Microsatellites Selection gradients |
author |
González-Martínez, S. C. Burczyk, J. Nathan, R. Nanos, N. Gil, L. Alía Miranda, Ricardo |
author_facet |
González-Martínez, S. C. Burczyk, J. Nathan, R. Nanos, N. Gil, L. Alía Miranda, Ricardo |
author_sort |
González-Martínez, S. C. |
title |
Effective gene dispersal and female reproductive success in Mediterranean maritime pine (Pinus pinaster Aiton) |
title_short |
Effective gene dispersal and female reproductive success in Mediterranean maritime pine (Pinus pinaster Aiton) |
title_full |
Effective gene dispersal and female reproductive success in Mediterranean maritime pine (Pinus pinaster Aiton) |
title_fullStr |
Effective gene dispersal and female reproductive success in Mediterranean maritime pine (Pinus pinaster Aiton) |
title_full_unstemmed |
Effective gene dispersal and female reproductive success in Mediterranean maritime pine (Pinus pinaster Aiton) |
title_sort |
effective gene dispersal and female reproductive success in mediterranean maritime pine (pinus pinaster aiton) |
publisher |
Wiley |
publishDate |
2006 |
url |
http://hdl.handle.net/20.500.12792/5163 http://hdl.handle.net/10261/290282 |
work_keys_str_mv |
AT gonzalezmartinezsc effectivegenedispersalandfemalereproductivesuccessinmediterraneanmaritimepinepinuspinasteraiton AT burczykj effectivegenedispersalandfemalereproductivesuccessinmediterraneanmaritimepinepinuspinasteraiton AT nathanr effectivegenedispersalandfemalereproductivesuccessinmediterraneanmaritimepinepinuspinasteraiton AT nanosn effectivegenedispersalandfemalereproductivesuccessinmediterraneanmaritimepinepinuspinasteraiton AT gill effectivegenedispersalandfemalereproductivesuccessinmediterraneanmaritimepinepinuspinasteraiton AT aliamirandaricardo effectivegenedispersalandfemalereproductivesuccessinmediterraneanmaritimepinepinuspinasteraiton |
_version_ |
1767603073597833216 |