English
 
Help Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
 DetailsSummary
  Extinction risk by mutational meltdown: Synergistic effects between population regulation and genetic drift

Gabriel, W., & Bürger, R. (1994). Extinction risk by mutational meltdown: Synergistic effects between population regulation and genetic drift. In V. Loeschcke, J. Tomiuk, & S. K. Jain (Eds.), Conservation Genetics (pp. 69-84). Basel: Birkhäuser.

Item is

 

show all hide all

Basic

show hide
Item Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-E3A9-D Version Permalink: https://hdl.handle.net/11858/00-001M-0000-000F-E3AA-B
Genre: Conference Paper

Files

show Files
hide Files
:
gabriel_1994.pdf (Any fulltext), 653KB
 
File Permalink:
-
Name:
gabriel_1994.pdf
Description:
-
OA-Status:
Visibility:
Restricted (Max Planck Institute for Evolutionary Biology, MPLM; )
MIME-Type / Checksum:
application/pdf
Technical Metadata:
Copyright Date:
-
Copyright Info:
-
License:
-

Locators

show

Creators

show
hide
 Creators:
Gabriel, W.1, Author           
Bürger, R., Author
Affiliations:
1Department Ecophysiology, Max Planck Institute for Limnology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_976547              

Content

show
hide
Free keywords: -
 Abstract: The accumulation of deleterious mutations reduces individual and mean population fitness. Therefore, in the long run, population size is affected. This faciliates further accumulation of mutations by enhanced genetic drift. Such synergistic interaction then drives the population to extinction. This mutational meltdown process is studied primarily for asexual populations. Recombination cannot stop the meltdown in small sexual populations. Independent of the mode of reproduction, the asexual case is relevant for any paternally or maternally inherited trait and for mitochondria and chloroplasts that can be viewed as asexual populations inside cells. The extinction risk is maximal for an intermediate value of the selection coefficient. Recombination does not destroy this effect, at least for small populations. In the asexual case, group selection is able to overpower individual selection to establish lineages with low repair capabilities, i. e. highly deleterious mutations. If the expression of deleterious mutations is modified by the environment, changes in the environment can cause an unexpected increase or decrease in the extinction risk because of the pronounced maximum extinction risk at intermediate values of s. It may be that an environmental management treatment that improves individual fitness, counterintuitively enhances the extinction risk of a population.

Details

show
hide
Language(s): eng - English
 Dates: 1994
 Publication Status: Issued
 Pages: -
 Publishing info: -
 Table of Contents: -
 Rev. Type: -
 Identifiers: eDoc: 212087
Other: 1472/S 36681
 Degree: -

Event

show
hide
Title: Symposium on Conservation Genetics
Place of Event: Sandbjerg, Denmark
Start-/End Date: 1993-05

Legal Case

show

Project information

show

Source 1

show
hide
Title: Conservation Genetics
Source Genre: Proceedings
 Creator(s):
Loeschcke, Volker, Editor
Tomiuk, Jürgen, Editor
Jain, Subodh K., Editor
Affiliations:
-
Publ. Info: Basel : Birkhäuser
Pages: X, 440 p. Volume / Issue: - Sequence Number: - Start / End Page: 69 - 84 Identifier: ISBN: 3-7643-2939-4

Source 2

show
hide
Title: Experientia Supplementum
Source Genre: Series
 Creator(s):
Affiliations:
Publ. Info: -
Pages: - Volume / Issue: 68 Sequence Number: - Start / End Page: - Identifier: ISSN: 0071-335X