Age-specific oxidative status and the expression of pre- and postcopulatory sexually selected traits in male red junglefowl, Gallus gallus
Noguera, Jose C. ; Dean, Rebecca ; Isaksson, Caroline LU
; Velando, Alberto
and Pizzari, Tommaso
(2012)
In Ecology and Evolution
2(9).
p.2155-2167
- Abstract
- Oxidative stress is emerging as a key factor underpinning life history and the expression of sexually selected traits. Resolving the role of oxidative stress in life history and sexual selection requires a pluralistic approach, which investigates how age affects the relationship between oxidative status (i.e., antioxidants and oxidative damage) and the multiple traits contributing to variation in reproductive success. Here, we investigate the relationship between oxidative status and the expression of multiple sexually selected traits in two-age classes of male red junglefowl, Gallus gallus, a species which displays marked male reproductive senescence. We found that, irrespective of male age, both male social status and comb size were... (More)
- Oxidative stress is emerging as a key factor underpinning life history and the expression of sexually selected traits. Resolving the role of oxidative stress in life history and sexual selection requires a pluralistic approach, which investigates how age affects the relationship between oxidative status (i.e., antioxidants and oxidative damage) and the multiple traits contributing to variation in reproductive success. Here, we investigate the relationship between oxidative status and the expression of multiple sexually selected traits in two-age classes of male red junglefowl, Gallus gallus, a species which displays marked male reproductive senescence. We found that, irrespective of male age, both male social status and comb size were strongly associated with plasma oxidative status, and there was a nonsignificant tendency for sperm motility to be associated with seminal oxidative status. Importantly, however, patterns of plasma and seminal antioxidant levels differed markedly in young and old males. While seminal antioxidants increased with plasma antioxidants in young males, the level of seminal antioxidants remained low and was independent of plasma levels in old males. In addition, old males also accumulated more oxidative damage in their sperm DNA. These results suggest that antioxidant allocation across different reproductive traits and somatic maintenance might change drastically as males age, leading to age-specific patterns of antioxidant investment. (Less)
Please use this url to cite or link to this publication:
https://lup.lub.lu.se/record/3366366
- author
- Noguera, Jose C.
; Dean, Rebecca
; Isaksson, Caroline
LU
; Velando, Alberto
and Pizzari, Tommaso
- organization
- publishing date
- 2012
- type
- Contribution to journal
- publication status
- published
- subject
- keywords
- Oxidative stress, reproductive restraints, reproductive senescence, sexual selection, sperm competition
- in
- Ecology and Evolution
- volume
- 2
- issue
- 9
- pages
- 2155 - 2167
- publisher
- Wiley-Blackwell
- external identifiers
-
- wos:000312449300006
- scopus:84890375620
- pmid:23139875
- ISSN
- 2045-7758
- DOI
- 10.1002/ece3.300
- language
- English
- LU publication?
- yes
- id
- 34e79f9f-bcd4-4826-8f29-ca814b84e262 (old id 3366366)
- date added to LUP
- 2016-04-01 13:49:13
- date last changed
- 2024-01-24 17:21:48
@article{34e79f9f-bcd4-4826-8f29-ca814b84e262,
abstract = {{Oxidative stress is emerging as a key factor underpinning life history and the expression of sexually selected traits. Resolving the role of oxidative stress in life history and sexual selection requires a pluralistic approach, which investigates how age affects the relationship between oxidative status (i.e., antioxidants and oxidative damage) and the multiple traits contributing to variation in reproductive success. Here, we investigate the relationship between oxidative status and the expression of multiple sexually selected traits in two-age classes of male red junglefowl, Gallus gallus, a species which displays marked male reproductive senescence. We found that, irrespective of male age, both male social status and comb size were strongly associated with plasma oxidative status, and there was a nonsignificant tendency for sperm motility to be associated with seminal oxidative status. Importantly, however, patterns of plasma and seminal antioxidant levels differed markedly in young and old males. While seminal antioxidants increased with plasma antioxidants in young males, the level of seminal antioxidants remained low and was independent of plasma levels in old males. In addition, old males also accumulated more oxidative damage in their sperm DNA. These results suggest that antioxidant allocation across different reproductive traits and somatic maintenance might change drastically as males age, leading to age-specific patterns of antioxidant investment.}},
author = {{Noguera, Jose C. and Dean, Rebecca and Isaksson, Caroline and Velando, Alberto and Pizzari, Tommaso}},
issn = {{2045-7758}},
keywords = {{Oxidative stress; reproductive restraints; reproductive senescence; sexual selection; sperm competition}},
language = {{eng}},
number = {{9}},
pages = {{2155--2167}},
publisher = {{Wiley-Blackwell}},
series = {{Ecology and Evolution}},
title = {{Age-specific oxidative status and the expression of pre- and postcopulatory sexually selected traits in male red junglefowl, Gallus gallus}},
url = {{http://dx.doi.org/10.1002/ece3.300}},
doi = {{10.1002/ece3.300}},
volume = {{2}},
year = {{2012}},
}