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title Predation Life History Responses to Increased Temperature Variability
authors Barbosa, M; Pestana, J; Soares, AMVM
author full name Barbosa, Miguel; Pestana, Joao; Soares, Amadeu M. V. M.
title Predation Life History Responses to Increased Temperature Variability
nationality internacional
source PLOS ONE
language English
document type Article
keywords plus DAPHNIA-MAGNA; POPULATION-DYNAMICS; INDUCIBLE DEFENSES; CLIMATE-CHANGE; EVOLUTION; TRAITS; RISK; FISH; FOOD; METABOLISM
abstract The evolution of life history traits is regulated by energy expenditure, which is, in turn, governed by temperature. The forecasted increase in temperature variability is expected to impose greater stress to organisms, in turn influencing the balance of energy expenditure and consequently life history responses. Here we examine how increased temperature variability affects life history responses to predation. Individuals reared under constant temperatures responded to different levels of predation risk as appropriate: namely, by producing greater number of neonates of smaller sizes and reducing the time to first brood. In contrast, we detected no response to predation regime when temperature was more variable. In addition, population growth rate was slowest among individuals reared under variable temperatures. Increased temperature variability also affected the development of inducible defenses. The combined effects of failing to respond to predation risk, slower growth rate and the miss-match development of morphological defenses supports suggestions that increased variability in temperature poses a greater risk for species adaptation than that posed by a mean shift in temperature.
author address [Barbosa, Miguel; Pestana, Joao; Soares, Amadeu M. V. M.] Univ Aveiro, Ctr Environm & Marine Studies CESAM, Dept Biol, P-3800 Aveiro, Portugal; [Barbosa, Miguel] Univ St Andrews, Ctr Biol Div, St Andrews, Fife, Scotland; [Barbosa, Miguel] Univ St Andrews, Scottish Oceans Inst, St Andrews, Fife, Scotland; [Soares, Amadeu M. V. M.] Univ Fed Tocantins, Programa Posgrad Prod Vegetal, Gurupi, Brazil
reprint address Barbosa, M (reprint author), Univ Aveiro, Ctr Environm & Marine Studies CESAM, Dept Biol, P-3800 Aveiro, Portugal.
e-mail address mb334@st-andrews.ac.uk
funding agency and grant number Fundacao para a Ciencia e Tecnologia [SFRH/BPD/82259/2011]; Bolsista CAPES/BRASIL [A058/2013]
funding text This study was funded by a Postdoctoral fellowship to MB (SFRH/BPD/82259/2011) Fundacao para a Ciencia e Tecnologia (www.fct.pt/index.phtml.pt) and with a
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cited reference count 50
publisher PUBLIC LIBRARY SCIENCE
publisher city SAN FRANCISCO
publisher address 1160 BATTERY STREET, STE 100, SAN FRANCISCO, CA 94111 USA
issn 1932-6203
29-character source abbreviation PLOS ONE
iso source abbreviation PLoS One
publication date SEP 24
year published 2014
volume 9
issue 9
article number e107971
digital object identifier (doi) 10.1371/journal.pone.0107971
page count 8
web of science category Multidisciplinary Sciences
subject category Science & Technology - Other Topics
document delivery number AQ0SJ
unique article identifier WOS:000342492700065
file barbosa_et_al_2014.pdf
link 10.1371/journal.pone.0107971