Local extirpation is pervasive among historical populations of Galápagos endemic tomatoes
| Autor: | María de Lourdes Torres, Matthew J. S. Gibson, Leonie C. Moyle |
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| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0301 basic medicine education.field_of_study Ecology fungi Biodiversity food and beverages Biology biology.organism_classification 010603 evolutionary biology 01 natural sciences Solanum pimpinellifolium 03 medical and health sciences 030104 developmental biology Solanum cheesmaniae Animal ecology Threatened species Conservation status Solanum education Endemism Ecology Evolution Behavior and Systematics |
| Zdroj: | Evolutionary Ecology. 34:289-307 |
| ISSN: | 1573-8477 0269-7653 |
| Popis: | The Galapagos Islands are home to incredible endemic biodiversity that is of high conservation interest. Two such endemic species are the Galapagos tomatoes: Solanum cheesmaniae and Solanum galapagense. Both are known from historical location records, but like many endemic plant species on the Galapagos, their current conservation status is unclear. We revisited previously documented sites of endemic species on San Cristobal, Santa Cruz, and Isabela, and document the disappearance of > 80% of these populations. In contrast, we find that two invasive relatives (Solanum pimpinellifolium and Solanum lycopersicum) are now highly abundant, and in some cases—based on morphological observations—might be hybridizing with endemics. Our findings suggest that expanding human developments and putative interspecific hybridization are among the major factors affecting the prevalence of invasives and the threatened persistence of the endemic populations. |
| Databáze: | OpenAIRE |
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