Colonisation debt: when invasion history impacts current range expansion DOI Creative Commons
Thibaut Morel‐Journel, Marjorie Haond,

Lana Dunan

et al.

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

Published: Nov. 15, 2022

Abstract Demographic processes that occur at the local level, such as positive density dependence in growth or dispersal, are known to shape population range expansion, notably by linking carrying capacity invasion speed. As a result of these processes, advance an front depends both on populations core invaded area and small edge. While impact velocity is easily tractable homogeneous environment, information lacking how speed varies heterogeneous environment due dependence. In this study, we tested existence ‘colonisation debt’, which corresponds conditions previously encountered its future advances. Due dependence, invasions expected spread respectively slower faster, along gradients increasing decreasing capacity, with stronger differences gradient slope increases. Using simulated one-dimensional landscape periodically varying confirmed colonisation debt when density-dependent dispersal was included. Additional experimental using biological model exhibit patch behind progression, mechanism debt.

Language: Английский

A gene-regulatory network model for density-dependent and sex-biased dispersal evolution during range expansions DOI Creative Commons
Jhelam N. Deshpande, Emanuel A. Fronhofer

bioRxiv (Cold Spring Harbor Laboratory), Journal Year: 2023, Volume and Issue: unknown

Published: July 19, 2023

Abstract Dispersal is key to understanding ecological and evolutionary dynamics. may itself evolve exhibit phenotypic plasticity. Specifically, organisms modulate their dispersal rates in response the density of conspecifics (density-dependent dispersal) own sex (sex-biased dispersal). While optimal plastic responses have been derived from first principles, genetic molecular basis plasticity has not modelled. An architecture especially relevant for evolution during rapidly changing spatial conditions such as range expansions. In this context, we develop an individual-based metapopulation model density-dependent sex-biased We represent trait a gene-regulatory network (GRN), which can take population individual’s input analyse emergent contextand condition-dependent responses. compare dynamics GRN standard reaction norm (RN) approach under equilibrium find that conditions, produces shapes match theoretical expectation RN model. However, expansion, leads faster expansion because GRNs maintain higher adaptive potential. Our results imply that, order understand eco-evolutionary contemporary time, traits must be taken into account.

Language: Английский

Citations

2
Colonisation debt: when invasion history impacts current range expansion DOI Creative Commons
Thibaut Morel‐Journel, Marjorie Haond,

Lana Dunan

et al.

Peer Community Journal, Journal Year: 2023, Volume and Issue: 3

Published: June 28, 2023

Demographic processes that occur at the local level, such as positive density dependence in growth or dispersal, are known to shape population range expansion, notably by linking carrying capacity invasion speed. As a result of these processes, advance an front depends both on populations core invaded area and small edge. While impact velocity is easily tractable homogeneous environment, information lacking how speed varies heterogeneous environment due dependence. In this study, we tested existence 'colonisation debt', which corresponds conditions previously encountered its future advances. Due dependence, invasions expected spread respectively slower faster, along gradients increasing decreasing capacity, with stronger differences gradient slope increases. Using simulated one-dimensional landscape periodically varying confirmed colonisation debt when density-dependent dispersal was included. Additional experimental using biological model exhibit patch behind progression, mechanism debt.

Language: Английский

Citations

0
Colonisation debt: when invasion history impacts current range expansion DOI Creative Commons
Thibaut Morel‐Journel, Marjorie Haond,

Lana Dunan

et al.

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

Published: Nov. 15, 2022

Abstract Demographic processes that occur at the local level, such as positive density dependence in growth or dispersal, are known to shape population range expansion, notably by linking carrying capacity invasion speed. As a result of these processes, advance an front depends both on populations core invaded area and small edge. While impact velocity is easily tractable homogeneous environment, information lacking how speed varies heterogeneous environment due dependence. In this study, we tested existence ‘colonisation debt’, which corresponds conditions previously encountered its future advances. Due dependence, invasions expected spread respectively slower faster, along gradients increasing decreasing capacity, with stronger differences gradient slope increases. Using simulated one-dimensional landscape periodically varying confirmed colonisation debt when density-dependent dispersal was included. Additional experimental using biological model exhibit patch behind progression, mechanism debt.

Language: Английский

Citations

0