Home About Browse Search
Svenska


Predation risk and the evolution of a vertebrate stress response: Parallel evolution of stress reactivity and sexual dimorphism

Vinterstare, Jerker and Ugge, Gustaf M. O. Ekelund and Hulthen, Kaj and Hegg, Alexander and Bronmark, Christer and Nilsson, Per Anders and Zellmer, Ursula Ronja and Lee, Marcus and Parssinen, Varpu and Sha, Yongcui and Bjorneras, Caroline and Zhang, Huan and Gollnisch, Raphael and Herzog, Simon D. and Hansson, Lars-Anders and Skerlep, Martin and Hu, Nan and Johansson, Emma and Langerhans, Randall Brian (2021). Predation risk and the evolution of a vertebrate stress response: Parallel evolution of stress reactivity and sexual dimorphism. Journal of Evolutionary Biology. 34 , 1554-1567
[Research article]

[img] PDF
1MB

Abstract

Predation risk is often invoked to explain variation in stress responses. Yet, the answers to several key questions remain elusive, including the following: (1) how predation risk influences the evolution of stress phenotypes, (2) the relative importance of environmental versus genetic factors in stress reactivity and (3) sexual dimorphism in stress physiology. To address these questions, we explored variation in stress reactivity (ventilation frequency) in a post-Pleistocene radiation of live-bearing fish, where Bahamas mosquitofish (Gambusia hubbsi) inhabit isolated blue holes that differ in predation risk. Individuals of populations coexisting with predators exhibited similar, relatively low stress reactivity as compared to low-predation populations. We suggest that this dampened stress reactivity has evolved to reduce energy expenditure in environments with frequent and intense stressors, such as piscivorous fish. Importantly, the magnitude of stress responses exhibited by fish from high-predation sites in the wild changed very little after two generations of laboratory rearing in the absence of predators. By comparison, low-predation populations exhibited greater among-population variation and larger changes subsequent to laboratory rearing. These low-predation populations appear to have evolved more dampened stress responses in blue holes with lower food availability. Moreover, females showed a lower ventilation frequency, and this sexual dimorphism was stronger in high-predation populations. This may reflect a greater premium placed on energy efficiency in live-bearing females, especially under high-predation risk where females show higher fecundities. Altogether, by demonstrating parallel adaptive divergence in stress reactivity, we highlight how energetic trade-offs may mould the evolution of the vertebrate stress response under varying predation risk and resource availability.

Authors/Creators:Vinterstare, Jerker and Ugge, Gustaf M. O. Ekelund and Hulthen, Kaj and Hegg, Alexander and Bronmark, Christer and Nilsson, Per Anders and Zellmer, Ursula Ronja and Lee, Marcus and Parssinen, Varpu and Sha, Yongcui and Bjorneras, Caroline and Zhang, Huan and Gollnisch, Raphael and Herzog, Simon D. and Hansson, Lars-Anders and Skerlep, Martin and Hu, Nan and Johansson, Emma and Langerhans, Randall Brian
Title:Predation risk and the evolution of a vertebrate stress response: Parallel evolution of stress reactivity and sexual dimorphism
Series Name/Journal:Journal of Evolutionary Biology
Year of publishing :2021
Volume:34
Page range:1554-1567
Number of Pages:14
Publisher:WILEY
ISSN:1010-061X
Language:English
Publication Type:Research article
Article category:Scientific peer reviewed
Version:Published version
Copyright:Creative Commons: Attribution 4.0
Full Text Status:Public
Subjects:(A) Swedish standard research categories 2011 > 1 Natural sciences > 106 Biological Sciences (Medical to be 3 and Agricultural to be 4) > Evolutionary Biology
Keywords:bahamas mosquitofish, poeciliidae, predation risk, predator-prey interactions, resource availability, sexual dimorphism, stress physiology, stress response, trade-offs, ventilation frequency
URN:NBN:urn:nbn:se:slu:epsilon-p-115562
Permanent URL:
http://urn.kb.se/resolve?urn=urn:nbn:se:slu:epsilon-p-115562
Additional ID:
Type of IDID
DOI10.1111/jeb.13918
Web of Science (WoS)000695019600001
ID Code:26751
Deposited By: SLUpub Connector
Deposited On:19 Jan 2022 15:25
Metadata Last Modified:19 Jan 2022 15:31

Repository Staff Only: item control page

Downloads

Downloads per year (since September 2012)

View more statistics

Downloads
Hits