Effects of archipelago geo-environmental dynamics on phylogenetic tree shape

Frontiers of Biogeography, Journal Year: 2025, Volume and Issue: 18

Published: May 16, 2025

In archipelagic environments, the successive emergence and submergence of islands induces changes in area, spatial structure isolation. Here, we aim to understand how such geo-environmental dynamics, by altering immigration, speciation extinction over time, may influence phylogenetic patterns. We use a neutral, stochastic, individual-based model which simulates community evolving an archipelago where four emerge submerge consecutively. record each birth, death immigration event, allowing us build complete phylogeny at any from extract extant species. show that rate lineage accumulation tree imbalance vary according hump-shaped curve, this is mainly due variations area inter-island connectivity. highlight past abrupt changes, as island emergence, leave persistent imprints accumulation. configuration modulates these effects: (i) enhancing connectivity leads more frequent events, resulting faster lineages, larger evolutionary radiations, turn produce highly imbalanced phylogenies; (ii) increase mainland brings ancestral lineages islands, slows down increases species turnover, for balanced phylogenies. Accounting important shape contemporary However, effects have be interpreted context archipelago. The influences rates both scales Landscape dynamics drives insular diversification phylogenies Inter-island dispersal favors generates Mainland makes establishment size clade depend on time colonization

Language: Английский

Habitat Association Predicts Population Connectivity and Persistence in Flightless Beetles: A Population Genomics Approach Within a Dynamic Archipelago

Molecular Ecology, Journal Year: 2024, Volume and Issue: 33(23)

Published: Nov. 5, 2024

ABSTRACT Habitat association has been proposed to affect evolutionary dynamics through its control on dispersal propensity, which is considered a key trait for lineage survival in habitats of low durational stability. The Constraint hypothesis predicts different micro‐ and macroevolutionary patterns stable versus dynamic habitat specialists, but the empirical evidence remains controversial insects mostly derives from winged lineages. We here use genome‐wide SNP data assess effect population two closely related flightless lineages genus Eutagenia (Coleoptera: Tenebrionidae), are co‐distributed across Cyclades islands Eastern Mediterranean associated with types presumed stability: psammophilous sandy coastal habitats, while geophilous comparatively compact soil habitats. Our comparative genomic demographic analyses support higher inter‐island gene flow lineage, presumably due physical properties sand‐dune that promote passive dispersal. also find consistent bottlenecks demes, suggesting evolution punctuated by local extinction recolonisation events. inferred processes surprisingly uniform among vary considerably demes depending historical island connectivity, indicating more stringent constraints lineage. This study extends demonstrating selection traits not only mechanism can drive differences between specialists.

Language: Английский

An introduction to the special issue: inferring macroevolutionary patterns and processes from microevolutionary mechanisms

Journal of Evolutionary Biology, Journal Year: 2024, Volume and Issue: 37(12), P. 1395 - 1401

Published: Dec. 1, 2024

Language: Английский