Origins of the central Macaronesian psyllid lineages (Hemiptera; Psylloidea) with characterization of a new island radiation on endemic Convolvulus floridus (Convolvulaceae) in the Canary Islands.

Autor: Bastin S; Instituto Canario de Investigaciones Agrarias, Unidad de Protección Vegetal, La Laguna, Tenerife, Spain., Reyes-Betancort JA; Instituto Canario de Investigaciones Agrarias, Jardín de Aclimatación de La Oratava, Puerto de la Cruz, Tenerife, Spain., Siverio de la Rosa F; Instituto Canario de Investigaciones Agrarias, Unidad de Protección Vegetal, La Laguna, Tenerife, Spain., Percy DM; Botany Department and Biodiversity Research Centre, University of British Columbia, Vancouver, British Columbia, Canada.
Jazyk: angličtina
Zdroj: PloS one [PLoS One] 2024 Jan 26; Vol. 19 (1), pp. e0297062. Date of Electronic Publication: 2024 Jan 26 (Print Publication: 2024).
DOI: 10.1371/journal.pone.0297062
Abstrakt: A molecular survey of native and adventive psyllids in the central Macaronesian islands provides the first comprehensive phylogenetic assessment of the origins of the psyllid fauna of the Canary and Madeira archipelagos. We employ a maximum likelihood backbone constraint analysis to place the central Macaronesian taxa within the Psylloidea mitogenome phylogeny. The native psyllid fauna in these central Macaronesian islands results from an estimated 26 independent colonization events. Island host plants are predicted by host plants of continental relatives in nearly all cases and six plant genera have been colonized multiple times (Chamaecytisus, Convolvulus, Olea, Pistacia, Rhamnus, and Spartocytisus) from the continent. Post-colonization diversification varies from no further cladogenesis (18 events, represented by a single native taxon) to modest in situ diversification resulting in two to four native taxa and, surprisingly, given the diverse range of islands and habitats, only one substantial species radiation with more than four native species. Specificity to ancestral host plant genera or family is typically maintained during in situ diversification both within and among islands. Characterization of a recently discovered island radiation consisting of four species on Convolvulus floridus in the Canary Islands shows patterns and rates of diversification that reflect island topographic complexity and geological dynamism. Although modest in species diversity, this radiation is atypical in diversification on a single host plant species, but typical in the primary role of allopatry in the diversification process.
Competing Interests: The authors have declared that no competing interests exist.
(Copyright: © 2024 Bastin et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.)
Databáze: MEDLINE
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