Nonidentifiability of state-dependent diversification models (SSEs) is ubiquitous but not problematic for phylogenetics DOI Creative Commons
Sergei Tarasov, Josef C. Uyeda

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2022, Volume and Issue: unknown

Published: July 5, 2022

A recent study (Louca and Pennell, 2020) spotlighted the issue of model congruence, or asymptotic unidentifiability, in time-dependent birth-death models used for reconstructing species diversification histories on phylogenetic trees. The present work investigates this state-dependent speciation extinction (SSE) models, commonly to trait-dependent diversification. We found that unidentifiability is universal due hidden states, with every SSE belonging an infinite congruence class. Notably, any trait-independent congruent raising concerns hypothesis testing. To address this, we propose analytical solution resolves selection within a Our findings show type only one possible, our place, SSEs becomes absolutely harmless inference. However, across classes remains challenging extremely high false positive rates. discovered offers clear explanation suggests potential ways forward.

Language: Английский

Viviparity imparts a macroevolutionary signature of ecological opportunity in the body size of female Liolaemus lizards DOI Creative Commons
Saúl F. Domínguez‐Guerrero, Damien Esquerré, Edward D. Burress

et al.

Nature Communications, Journal Year: 2024, Volume and Issue: 15(1)

Published: June 11, 2024

Abstract Viviparity evolved ~115 times across squamate reptiles, facilitating the colonization of cold habitats, where oviparous species are scarce or absent. Whether ecological opportunity furnished by such reconfigures phenotypic diversity and accelerates evolution is unclear. We investigated association between viviparity patterns rates body size in female Liolaemus lizards, most species-rich tetrapod genus from temperate regions. Here, we discover that viviparous evolve ~20% larger optimal sizes than their relatives, but exhibit similar evolution. Through a causal modeling approach, find indirectly influences through shifts thermal environment. Accordingly, habitats favors species, reconfiguring . The catalyzing influence on arises because it unlocks access to otherwise inaccessible sources opportunity, an outcome potentially repeated tree life.

Language: Английский

Citations

2
Nonidentifiability of state-dependent diversification models (SSEs) is ubiquitous but not problematic for phylogenetics DOI Creative Commons
Sergei Tarasov, Josef C. Uyeda

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2022, Volume and Issue: unknown

Published: July 5, 2022

A recent study (Louca and Pennell, 2020) spotlighted the issue of model congruence, or asymptotic unidentifiability, in time-dependent birth-death models used for reconstructing species diversification histories on phylogenetic trees. The present work investigates this state-dependent speciation extinction (SSE) models, commonly to trait-dependent diversification. We found that unidentifiability is universal due hidden states, with every SSE belonging an infinite congruence class. Notably, any trait-independent congruent raising concerns hypothesis testing. To address this, we propose analytical solution resolves selection within a Our findings show type only one possible, our place, SSEs becomes absolutely harmless inference. However, across classes remains challenging extremely high false positive rates. discovered offers clear explanation suggests potential ways forward.

Language: Английский

Citations

2