Please use this identifier to cite or link to this item:
http://hdl.handle.net/123456789/1509
Title: | Local maladaptation due to density-dependent natural selection |
Authors: | Arasimhan, Aaditya N. |
Keywords: | maladaptation density-dependent |
Issue Date: | 3-May-2020 |
Publisher: | IISER Mohali |
Abstract: | Local maladaptation due to density-dependent natural selection Natural selection usually leads to adaptation, but can also lead to declin- ing population fitness or maladaptation despite evolution at the individual level. In this study, populations subjected to over 250 generations of strong density-dependent natural selection were hypothesised to be locally adapted. I assayed their adult fitness in a common-garden environment to test the local (mal)adaptation hypothesis. Additionally, I performed fitness assays separately in males and females to test whether density-dependent natural selection had any sex specific effects. Males from populations evolving under density-dependent natural selection were maladapted in comparison to their ancestral control populations. In contrast, females showed both local adapta- tion and local maladaptation. Ecological causes for such maladaptation are most likely a combination of poor culture environment, unstable population dynamics and frequency-dependent selection. |
URI: | http://hdl.handle.net/123456789/1509 |
Appears in Collections: | MS-15 |
Files in This Item:
File | Size | Format | |
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MS15013.pdf | 16.49 MB | Adobe PDF | View/Open |
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