Benvenuto, C ORCID: https://orcid.org/0000-0002-8378-8168, Coscia, I
ORCID: https://orcid.org/0000-0001-5768-4675, Chopelet, J, Sala-Bozano, M and Mariani, S
ORCID: https://orcid.org/0000-0002-5329-0553
2017,
'Ecological and evolutionary consequences of alternative sex-change pathways in fish'
, Scientific Reports, 7 (9804)
.
|
PDF
- Published Version
Available under License Creative Commons Attribution 4.0. Download (3MB) | Preview |
|
![]() |
PDF
- Accepted Version
Restricted to Repository staff only Download (832kB) | Request a copy |
Abstract
Sequentially hermaphroditic fish change sex from male to female (protandry) or vice versa (protogyny), increasing their fitness by becoming highly fecund females or large dominant males, respectively. These life-history strategies present different social organizations and reproductive modes, from near-random mating in protandry, to aggregate- and harem-spawning in protogyny. Using a combination of theoretical and molecular approaches, we compared variance in reproductive success (Vk*) and effective population sizes (Ne) in several species of sex-changing fish. We observed that, regardless of the direction of sex change, individuals conform to the same overall strategy, producing more offspring and exhibiting greater Vk* in the second sex. However, protogynous species show greater Vk*, especially pronounced in haremic species, resulting in an overall reduction of Ne compared to protandrous species. Collectively and independently, our results demonstrate that the direction of sex change is a pivotal variable in predicting demographic changes and resilience in sex-changing fish, many of which sustain highly valued and vulnerable fisheries worldwide.
Item Type: | Article |
---|---|
Schools: | Schools > School of Environment and Life Sciences > Ecosystems and Environment Research Centre |
Journal or Publication Title: | Scientific Reports |
Publisher: | Nature Publishing Group |
ISSN: | 2045-2322 |
Related URLs: | |
Depositing User: | USIR Admin |
Date Deposited: | 25 Jul 2017 14:33 |
Last Modified: | 25 Nov 2019 16:15 |
URI: | http://usir.salford.ac.uk/id/eprint/43295 |
Actions (login required)
![]() |
Edit record (repository staff only) |