Disparate maturation adaptations to size-dependent mortality
(2006) In Royal Society of London. Proceedings B. Biological Sciences 273(1598). p.2185-2192- Abstract
- Body size is an important determinant of resource use, fecundity and mortality risk. Evolution of maturation size in response to size-dependent selection is thus a fundamental part of life-history theory. Increased mortality among small individuals has previously been predicted to cause larger maturation size, whereas increased mortality among large individuals is expected to have the opposite effect. Here we use a continuously size-structured model to demonstrate that, contrary to these widespread expectations, increased mortality among small individuals can have three alternative effects: maturation size may increase, decrease or become evolutionarily bistable. We show that such complex responses must be reckoned with whenever mortality... (More)
- Body size is an important determinant of resource use, fecundity and mortality risk. Evolution of maturation size in response to size-dependent selection is thus a fundamental part of life-history theory. Increased mortality among small individuals has previously been predicted to cause larger maturation size, whereas increased mortality among large individuals is expected to have the opposite effect. Here we use a continuously size-structured model to demonstrate that, contrary to these widespread expectations, increased mortality among small individuals can have three alternative effects: maturation size may increase, decrease or become evolutionarily bistable. We show that such complex responses must be reckoned with whenever mortality is size-dependent, growth is indeterminate, reproduction impairs growth and fecundity increases with size. Predicting adaptive responses to altered size-dependent mortality is thus inherently difficult, since, as demonstrated here, such mortality cannot only reverse the direction of but also cause abrupt shifts in evolutionarily stable maturation sizes. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/162669
- author
- Gårdmark, Anna LU and Dieckmann, U
- organization
- publishing date
- 2006
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Royal Society of London. Proceedings B. Biological Sciences
- volume
- 273
- issue
- 1598
- pages
- 2185 - 2192
- publisher
- Royal Society Publishing
- external identifiers
-
- wos:000240104300012
- scopus:33748254687
- ISSN
- 1471-2954
- DOI
- 10.1098/rspb.2006.3562
- language
- English
- LU publication?
- yes
- additional info
- The information about affiliations in this record was updated in December 2015. The record was previously connected to the following departments: Theoretical ecology (Closed 2011) (011006011)
- id
- 81c28a71-0845-48e6-a256-d43fbdda0b2c (old id 162669)
- date added to LUP
- 2016-04-01 11:48:12
- date last changed
- 2022-01-26 18:30:09
@article{81c28a71-0845-48e6-a256-d43fbdda0b2c,
abstract = {{Body size is an important determinant of resource use, fecundity and mortality risk. Evolution of maturation size in response to size-dependent selection is thus a fundamental part of life-history theory. Increased mortality among small individuals has previously been predicted to cause larger maturation size, whereas increased mortality among large individuals is expected to have the opposite effect. Here we use a continuously size-structured model to demonstrate that, contrary to these widespread expectations, increased mortality among small individuals can have three alternative effects: maturation size may increase, decrease or become evolutionarily bistable. We show that such complex responses must be reckoned with whenever mortality is size-dependent, growth is indeterminate, reproduction impairs growth and fecundity increases with size. Predicting adaptive responses to altered size-dependent mortality is thus inherently difficult, since, as demonstrated here, such mortality cannot only reverse the direction of but also cause abrupt shifts in evolutionarily stable maturation sizes.}},
author = {{Gårdmark, Anna and Dieckmann, U}},
issn = {{1471-2954}},
language = {{eng}},
number = {{1598}},
pages = {{2185--2192}},
publisher = {{Royal Society Publishing}},
series = {{Royal Society of London. Proceedings B. Biological Sciences}},
title = {{Disparate maturation adaptations to size-dependent mortality}},
url = {{http://dx.doi.org/10.1098/rspb.2006.3562}},
doi = {{10.1098/rspb.2006.3562}},
volume = {{273}},
year = {{2006}},
}