Gradients of genetic diversity and differentiation across the distribution range of a Mediterranean coral: Patterns, processes and conservation implications

Gradients of genetic diversity and differentiation across the distribution range of a Mediterranean coral: Patterns, processes and conservation implications

Show other versions (1)

2nd Meeting of the Iberian Ecological Society (SIBECOL), 3-8 July 2022, Aveiro, Portugal

Saved in:
Bibliographic Details
Main Authors: Ledoux, J. B., Ghanem, Raouia, Horaud, Mathilde, López-Sendino, P., Romero-Soriano, Valèria, Antunes, Agostinho, Bensoussan, Nathaniel, Gómez-Gras, D., Linares, Cristina, Machordom, Annie, Ocaña, Óscar, Templado, José, Leblois, Raphael, Ben Souissi, Jamila, Garrabou, Joaquim
Format: comunicación de congreso biblioteca
Language:English
Published: Sociedad Ibérica de Ecología 2022-07-07
Subjects:Conserve and sustainably use the oceans, seas and marine resources for sustainable development,
Online Access:http://hdl.handle.net/10261/333938
Tags: Add Tag
No Tags, Be the first to tag this record!
id dig-icm-es-10261-333938
record_format koha
spelling dig-icm-es-10261-3339382023-08-25T09:51:08Z Gradients of genetic diversity and differentiation across the distribution range of a Mediterranean coral: Patterns, processes and conservation implications Ledoux, J. B. Ghanem, Raouia Horaud, Mathilde López-Sendino, P. Romero-Soriano, Valèria Antunes, Agostinho Bensoussan, Nathaniel Gómez-Gras, D. Linares, Cristina Machordom, Annie Ocaña, Óscar Templado, José Leblois, Raphael Ben Souissi, Jamila Garrabou, Joaquim Conserve and sustainably use the oceans, seas and marine resources for sustainable development 2nd Meeting of the Iberian Ecological Society (SIBECOL), 3-8 July 2022, Aveiro, Portugal How historical and contemporary evolutionary processes shape the patterns of genetic diversity and differentiation across species’ distribution range remains an open question with strong conservation implications. Negative gradients of neutral genetic diversity from central to peripheral populations were reported in various species, yet, the underlying processes are still a matter of debate. Two non-mutually exclusive hypotheses involving contemporary vs. historical processes are usually considered to explain these negative gradients. Following the “central-peripheral hypothesis”, the genetic diversity should decline from the centre toward the peripheries of a species’ range in response to demo-genetic stochasticity linked to the environmental characteristics of peripheral habitats. On the other hand, the “postglacial range expansion hypothesis” suggests that historical processes such as serial founder events recolonization following the Last Glacial Maximum (LGM 24-18,000 years ago), shape negative genetic gradients from the source to the edge of the expansion range. Focusing on the Mediterranean orange stony coral, Astroides calycularis, we tested these hypotheses. Standing on microsatellite genotyping data from 29 populations distributed across its distribution range, we i) characterized the pattern of neutral genetic diversity; ii) gave insights into the underlying processes; and iii) discussed conservation implications, with emphasis on the Zembra national park (Tunisia). We show that the decrease of genetic diversity (He, Ar(g)) and an increase of genetic differentiation (population-specific FST) from the Centre to the Eastern and Western Peripheries of the distribution range is most likely explained by “the postglacial range expansion hypothesis” rather than the “central-peripheral hypothesis”. The populations from Zembra National Park show the highest genetic diversity reported so far in the species. We argue that enforcement of conservation measures should be considered to protect this genetic diversity pattern, in particular when considering the low effective population size inferred at many sites Peer reviewed 2023-08-25T09:49:56Z 2023-08-25T09:49:56Z 2022-07-07 comunicación de congreso 2nd Meeting of the Iberian Ecological Society (2022) http://hdl.handle.net/10261/333938 en Sí none Sociedad Ibérica de Ecología
institution ICM ES
collection DSpace
country España
countrycode ES
component Bibliográfico
access En linea
databasecode dig-icm-es
tag biblioteca
region Europa del Sur
libraryname Biblioteca del ICM España
language English
topic Conserve and sustainably use the oceans, seas and marine resources for sustainable development
Conserve and sustainably use the oceans, seas and marine resources for sustainable development
spellingShingle Conserve and sustainably use the oceans, seas and marine resources for sustainable development
Conserve and sustainably use the oceans, seas and marine resources for sustainable development
Ledoux, J. B.
Ghanem, Raouia
Horaud, Mathilde
López-Sendino, P.
Romero-Soriano, Valèria
Antunes, Agostinho
Bensoussan, Nathaniel
Gómez-Gras, D.
Linares, Cristina
Machordom, Annie
Ocaña, Óscar
Templado, José
Leblois, Raphael
Ben Souissi, Jamila
Garrabou, Joaquim
Gradients of genetic diversity and differentiation across the distribution range of a Mediterranean coral: Patterns, processes and conservation implications
description 2nd Meeting of the Iberian Ecological Society (SIBECOL), 3-8 July 2022, Aveiro, Portugal
format comunicación de congreso
topic_facet Conserve and sustainably use the oceans, seas and marine resources for sustainable development
author Ledoux, J. B.
Ghanem, Raouia
Horaud, Mathilde
López-Sendino, P.
Romero-Soriano, Valèria
Antunes, Agostinho
Bensoussan, Nathaniel
Gómez-Gras, D.
Linares, Cristina
Machordom, Annie
Ocaña, Óscar
Templado, José
Leblois, Raphael
Ben Souissi, Jamila
Garrabou, Joaquim
author_facet Ledoux, J. B.
Ghanem, Raouia
Horaud, Mathilde
López-Sendino, P.
Romero-Soriano, Valèria
Antunes, Agostinho
Bensoussan, Nathaniel
Gómez-Gras, D.
Linares, Cristina
Machordom, Annie
Ocaña, Óscar
Templado, José
Leblois, Raphael
Ben Souissi, Jamila
Garrabou, Joaquim
author_sort Ledoux, J. B.
title Gradients of genetic diversity and differentiation across the distribution range of a Mediterranean coral: Patterns, processes and conservation implications
title_short Gradients of genetic diversity and differentiation across the distribution range of a Mediterranean coral: Patterns, processes and conservation implications
title_full Gradients of genetic diversity and differentiation across the distribution range of a Mediterranean coral: Patterns, processes and conservation implications
title_fullStr Gradients of genetic diversity and differentiation across the distribution range of a Mediterranean coral: Patterns, processes and conservation implications
title_full_unstemmed Gradients of genetic diversity and differentiation across the distribution range of a Mediterranean coral: Patterns, processes and conservation implications
title_sort gradients of genetic diversity and differentiation across the distribution range of a mediterranean coral: patterns, processes and conservation implications
publisher Sociedad Ibérica de Ecología
publishDate 2022-07-07
url http://hdl.handle.net/10261/333938
work_keys_str_mv AT ledouxjb gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT ghanemraouia gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT horaudmathilde gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT lopezsendinop gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT romerosorianovaleria gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT antunesagostinho gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT bensoussannathaniel gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT gomezgrasd gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT linarescristina gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT machordomannie gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT ocanaoscar gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT templadojose gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT lebloisraphael gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT bensouissijamila gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
AT garraboujoaquim gradientsofgeneticdiversityanddifferentiationacrossthedistributionrangeofamediterraneancoralpatternsprocessesandconservationimplications
_version_ 1777668038238142464

Similar Items