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Journal article 1106 views

Interactions between maternal effects and dispersal

Mike Fowler Orcid Logo

Oikos, Volume: 110, Issue: 1, Pages: 81 - 90

Swansea University Author: Mike Fowler Orcid Logo

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DOI (Published version): 10.1111/j.0030-1299.2005.13704.x

Abstract

Maternal effects and spatial processes are rightly recognised as being of great importance in the life histories of a number of different organisms. Previously, little effort has been made for investigating the potential for changes to arise from interactions between these two crucial processes. Her...

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Published in: Oikos
Published: 2005
URI: https://cronfa.swan.ac.uk/Record/cronfa19660
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first_indexed 2015-06-19T02:01:47Z
last_indexed 2018-02-09T04:55:27Z
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spelling 2015-06-18T10:16:39.0240269 v2 19660 2014-12-01 Interactions between maternal effects and dispersal a3a29027498d4b43a3f082a0a5ba16b4 0000-0003-1544-0407 Mike Fowler Mike Fowler true false 2014-12-01 SBI Maternal effects and spatial processes are rightly recognised as being of great importance in the life histories of a number of different organisms. Previously, little effort has been made for investigating the potential for changes to arise from interactions between these two crucial processes. Here I tested the outcome of introducing a maternal effect on a population of dispersing organisms in different ways, under both spatially homogeneous and heterogeneous conditions, through novel modification of a well-known population model. First, I proposed that parents contribute a proportion of offspring based on their own developmental experience. This is applied to dispersing organisms as well as those that remain in their natal patch to breed. I go on to ask how the density of dispersing offspring might be influenced by a maternal effect. What happens if parents that developed under relatively good (or bad) conditions compared to current conditions invest in dispersing offspring? This relaxes the assumption that populations have perfect knowledge of the local carrying capacity. The results highlight an interesting range of outcomes. By introducing a maternal effect into the potential future reproductive output otherwise highly unstable population dynamics were simplified (but not stabilised). If maternal effects affect dispersal decisions, it is possible for regular cycles with a period consistent with many examples from ecological time-series’ to arise. These results are in agreement with previous studies, however, by investigating the effects in different aspects of life history, it is possible to predict the direction of the impact on population dynamics. This work also highlights the potential for regular cycles in population dynamics to arise due to maternal effects, in agreement with recent field studies. Journal Article Oikos 110 1 81 90 31 12 2005 2005-12-31 10.1111/j.0030-1299.2005.13704.x COLLEGE NANME Biosciences COLLEGE CODE SBI Swansea University 2015-06-18T10:16:39.0240269 2014-12-01T10:25:14.3987226 Faculty of Science and Engineering School of Biosciences, Geography and Physics - Biosciences Mike Fowler 0000-0003-1544-0407 1
title Interactions between maternal effects and dispersal
spellingShingle Interactions between maternal effects and dispersal
Mike Fowler
title_short Interactions between maternal effects and dispersal
title_full Interactions between maternal effects and dispersal
title_fullStr Interactions between maternal effects and dispersal
title_full_unstemmed Interactions between maternal effects and dispersal
title_sort Interactions between maternal effects and dispersal
author_id_str_mv a3a29027498d4b43a3f082a0a5ba16b4
author_id_fullname_str_mv a3a29027498d4b43a3f082a0a5ba16b4_***_Mike Fowler
author Mike Fowler
author2 Mike Fowler
format Journal article
container_title Oikos
container_volume 110
container_issue 1
container_start_page 81
publishDate 2005
institution Swansea University
doi_str_mv 10.1111/j.0030-1299.2005.13704.x
college_str Faculty of Science and Engineering
hierarchytype
hierarchy_top_id facultyofscienceandengineering
hierarchy_top_title Faculty of Science and Engineering
hierarchy_parent_id facultyofscienceandengineering
hierarchy_parent_title Faculty of Science and Engineering
department_str School of Biosciences, Geography and Physics - Biosciences{{{_:::_}}}Faculty of Science and Engineering{{{_:::_}}}School of Biosciences, Geography and Physics - Biosciences
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description Maternal effects and spatial processes are rightly recognised as being of great importance in the life histories of a number of different organisms. Previously, little effort has been made for investigating the potential for changes to arise from interactions between these two crucial processes. Here I tested the outcome of introducing a maternal effect on a population of dispersing organisms in different ways, under both spatially homogeneous and heterogeneous conditions, through novel modification of a well-known population model. First, I proposed that parents contribute a proportion of offspring based on their own developmental experience. This is applied to dispersing organisms as well as those that remain in their natal patch to breed. I go on to ask how the density of dispersing offspring might be influenced by a maternal effect. What happens if parents that developed under relatively good (or bad) conditions compared to current conditions invest in dispersing offspring? This relaxes the assumption that populations have perfect knowledge of the local carrying capacity. The results highlight an interesting range of outcomes. By introducing a maternal effect into the potential future reproductive output otherwise highly unstable population dynamics were simplified (but not stabilised). If maternal effects affect dispersal decisions, it is possible for regular cycles with a period consistent with many examples from ecological time-series’ to arise. These results are in agreement with previous studies, however, by investigating the effects in different aspects of life history, it is possible to predict the direction of the impact on population dynamics. This work also highlights the potential for regular cycles in population dynamics to arise due to maternal effects, in agreement with recent field studies.
published_date 2005-12-31T03:23:08Z
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