Sympatric and allopatric niche shift of endemic Gypsophila (Caryophyllaceae) taxa in the Iberian Peninsula

Autor: Julio Álvarez-Jiménez, Juan Manuel Martínez Labarga, Carmen Bartolomé, Oscar García Cardo, Miguel de Luis
Jazyk: angličtina
Rok vydání: 2018
Předmět:
0106 biological sciences
Atmospheric Science
Topography
010504 meteorology & atmospheric sciences
Speciation
lcsh:Medicine
Caryophyllaceae
Subspecies
01 natural sciences
Soil
Ice Cover
Paleopedology
lcsh:Science
media_common
Climatology
Principal Component Analysis
Multidisciplinary
Ecology
Geography
Sympatry
Sympatric speciation
Ecological Niches
Research Article
Valleys
Evolutionary Processes
media_common.quotation_subject
Climate Change
Niche
Allopatric speciation
Soil Science
Biology
010603 evolutionary biology
Ecological speciation
Polyploidy
Species Specificity
Genetics
Paleoclimatology
Ecosystem
0105 earth and related environmental sciences
Ecological niche
Evolutionary Biology
Landforms
Ecology and Environmental Sciences
lcsh:R
Biology and Life Sciences
Paleontology
Geomorphology
15. Life on land
Models
Theoretical
Taxon
Spain
Earth Sciences
lcsh:Q
Paleogenetics
Departures from Diploidy
Zdroj: PLoS ONE, Vol 13, Iss 11, p e0206043 (2018)
PLoS ONE
ISSN: 1932-6203
Popis: Several species of the Gypsophila genus are endemic to the Iberian Peninsula, including gypsophytes of particular ecological, evolutionary and biochemical interest, and taxa that have undergone both sympatric and allopatric genetic differentiation. The niche shift among these taxa has been assessed using ecological niche modelling and ordination techniques, adopting a niche overlap approach to compare the similarity and equivalency of the ecological niches. We used the Maximum Entropy method to study the potential distribution of these taxa in different eras: the Last Glacial Maximum (LGM), the Mid Holocene and the current conditions. We present evidence of niche shift during the speciation of G. bermejoi, with a strong niche overlap between the parental taxa (G. struthium subsp. struthium and G. tomentosa), yet both overlap much more weakly with the hybrid species. This phenomenon may be explained by genetic and epigenetic interactions, and it has been described in other species. We also studied the sister subspecies G. struthium subsp. struthium and G. struthium subsp. hispanica, with mostly allopatric distributions and with the Iberian System mountain range acting as a geographical barrier. The Iberian System and other mountain ranges may have favored differences in the climatic conditions on either side of the mountain range, which is consistent with an incipient process of bioclimatic ecological speciation. These results seem to indicate that niche shift can occur over very different timespans. In the case of G. bermejoi, speciation may have produced significant niche shifting in one or two generations due to its alloploid nature. By contrast, G. struthium subsp. struthium and G. struthium subsp. hispanica seem to have undergone a more gradual process of allopatric genetic differentiation driven by bioclimatic factors. Both these processes are relatively recent and they will have been strongly influenced by the climate change at the end of LGM.
Databáze: OpenAIRE
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