Oxidative stress as a cost of reproduction: Beyond the simplistic trade‐off model

JR Speakman, M Garratt - BioEssays, 2014 - Wiley Online Library
The idea that oxidative stress may underpin life history trade‐offs has become extremely
popular. However, experimental support for the concept has proved equivocal. It has …

The free‐radical damage theory: accumulating evidence against a simple link of oxidative stress to ageing and lifespan

JR Speakman, C Selman - Bioessays, 2011 - Wiley Online Library
Recent work on a small European cave salamander (Proteus anguinus) has revealed that it
has exceptional longevity, yet it appears to have unexceptional defences against oxidative …

Oxidative stress and life histories: unresolved issues and current needs

JR Speakman, JD Blount, AM Bronikowski… - Ecology and …, 2015 - Wiley Online Library
Life‐history theory concerns the trade‐offs that mold the patterns of investment by animals
between reproduction, growth, and survival. It is widely recognized that physiology plays a …

Assessing the sensitivity of seabird populations to adverse effects from tidal stream turbines and wave energy devices

RW Furness, HM Wade, AMC Robbins… - ICES Journal of …, 2012 - academic.oup.com
Abstract Furness, RW, Wade, HM, Robbins, AMC, and Masden, EA 2012. Assessing the
sensitivity of seabird populations to adverse effects from tidal stream turbines and wave …

Oxidative damage increases with reproductive energy expenditure and is reduced by food-supplementation

QE Fletcher, C Selman, S Boutin, AG McAdam… - …, 2013 - academic.oup.com
A central principle in life-history theory is that reproductive effort negatively affects survival.
Costs of reproduction are thought to be physiologically based, but the underlying …

Age‐related variation in energy expenditure in a long‐lived bird within the envelope of an energy ceiling

KH Elliott, M Le Vaillant, A Kato… - Journal of Animal …, 2014 - Wiley Online Library
Energy expenditure in wild animals can be limited (i) intrinsically by physiological processes
that constrain an animal's capacity to use energy,(ii) extrinsically by energy availability in the …

A conceptual framework for clutch-size evolution in songbirds

TE Martin - The American Naturalist, 2014 - journals.uchicago.edu
Causes of evolved differences in clutch size among songbird species remain debated. I
propose a new conceptual framework that integrates aspects of traditional life-history theory …

The energetic cost of parasitism in a wild population

O Hicks, SJ Burthe, F Daunt… - … of the Royal …, 2018 - royalsocietypublishing.org
Parasites have profound fitness effects on their hosts, yet these are often sub-lethal, making
them difficult to understand and quantify. A principal sub-lethal mechanism that reduces …

Resting and daily energy expenditures during reproduction are adjusted in opposite directions in free‐living birds

J Welcker, JR Speakman, KH Elliott… - Functional …, 2015 - Wiley Online Library
Reproduction is energetically expensive, and daily energy expenditure (DEE) often peaks
during the period of rearing young. The 'potentiation'hypothesis predicts that high DEE …

Thyroid hormones correlate with basal metabolic rate but not field metabolic rate in a wild bird species

J Welcker, O Chastel, GW Gabrielsen, J Guillaumin… - PloS one, 2013 - journals.plos.org
Thyroid hormones (TH) are known to stimulate in vitro oxygen consumption of tissues in
mammals and birds. Hence, in many laboratory studies a positive relationship between TH …