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Climate-induced reaction norms for life-history traits in pythons

Ujvari, Beata; Shine, Richard; Luiselli, Luca and Madsen, Thomas LU (2011) In Ecology 92(9). p.1858-1864
Abstract
Climate change modelers predict increasingly frequent "extreme events," so it is critical to quantify whether organismal responses (such as reproductive output) measured over the range of usual climatic conditions can predict responses under more extreme conditions. In a 20-year field study on water pythons (Liasis fuscus), we quantified the effects of climatically driven annual variation in food supply on demographic traits of female pythons (feeding rate, body size, body mass, and reproductive output). Reaction norms linking food supply to feeding rates and residual body mass were broadly linear, whereas norms linking food supply to female body size became curvilinear when a dramatic (flooding-induced) famine reduced the mean body size... (More)
Climate change modelers predict increasingly frequent "extreme events," so it is critical to quantify whether organismal responses (such as reproductive output) measured over the range of usual climatic conditions can predict responses under more extreme conditions. In a 20-year field study on water pythons (Liasis fuscus), we quantified the effects of climatically driven annual variation in food supply on demographic traits of female pythons (feeding rate, body size, body mass, and reproductive output). Reaction norms linking food supply to feeding rates and residual body mass were broadly linear, whereas norms linking food supply to female body size became curvilinear when a dramatic (flooding-induced) famine reduced the mean body size at sexual maturity. Thus, the reaction norms recorded over 16 years of "normal" (albeit highly variable) climatic conditions gave little insight into the population's response to a more extreme nutritional crisis. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
subject
keywords
dusky rat, extreme climatic events, food supply, Liasis fuscus, life-history plasticity, phenotypic plasticity, Rattus colletti, reaction norms, snake, tropical Australia, water python
in
Ecology
volume
92
issue
9
pages
1858 - 1864
publisher
Ecological Society of America
external identifiers
  • wos:000294152800017
  • scopus:80051892951
ISSN
0012-9658
DOI
10.1890/11-0129.1
language
English
LU publication?
yes
id
1d763c15-e8b1-4461-8b03-47c7ee526523 (old id 2161434)
date added to LUP
2011-09-21 13:15:40
date last changed
2017-01-01 05:30:33
@article{1d763c15-e8b1-4461-8b03-47c7ee526523,
  abstract     = {Climate change modelers predict increasingly frequent "extreme events," so it is critical to quantify whether organismal responses (such as reproductive output) measured over the range of usual climatic conditions can predict responses under more extreme conditions. In a 20-year field study on water pythons (Liasis fuscus), we quantified the effects of climatically driven annual variation in food supply on demographic traits of female pythons (feeding rate, body size, body mass, and reproductive output). Reaction norms linking food supply to feeding rates and residual body mass were broadly linear, whereas norms linking food supply to female body size became curvilinear when a dramatic (flooding-induced) famine reduced the mean body size at sexual maturity. Thus, the reaction norms recorded over 16 years of "normal" (albeit highly variable) climatic conditions gave little insight into the population's response to a more extreme nutritional crisis.},
  author       = {Ujvari, Beata and Shine, Richard and Luiselli, Luca and Madsen, Thomas},
  issn         = {0012-9658},
  keyword      = {dusky rat,extreme climatic events,food supply,Liasis fuscus,life-history plasticity,phenotypic plasticity,Rattus colletti,reaction norms,snake,tropical Australia,water python},
  language     = {eng},
  number       = {9},
  pages        = {1858--1864},
  publisher    = {Ecological Society of America},
  series       = {Ecology},
  title        = {Climate-induced reaction norms for life-history traits in pythons},
  url          = {http://dx.doi.org/10.1890/11-0129.1},
  volume       = {92},
  year         = {2011},
}