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Benvenuto, C, Coscia, I, Chopelet, J, Sala-Bozano, M and Mariani, S (2017) Ecological and evolutionary consequences of alternative sex-change pathways in fish. Scientific Reports, 7. ISSN 2045-2322
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Ecological and evolutionary consequences of alternative sex-change pathways in fish.pdf - Published Version Available under License Creative Commons Attribution. Download (3MB) | Preview |
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 (V k*) and effective population sizes (N e) 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 V k* in the second sex. However, protogynous species show greater V k*, especially pronounced in haremic species, resulting in an overall reduction of N e 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 |
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| Uncontrolled Keywords: | 0601 Biochemistry and Cell Biology, 0299 Other Physical Sciences |
| Subjects: | Q Science > QH Natural history > QH301 Biology Q Science > QH Natural history > QH426 Genetics Q Science > QL Zoology |
| Divisions: | Biological & Environmental Sciences (from Sep 19) |
| Publisher: | Nature Publishing Group |
| Related URLs: | |
| Date Deposited: | 06 Mar 2020 10:40 |
| Last Modified: | 04 Sep 2021 07:46 |
| DOI or ID number: | 10.1038/s41598-017-09298-8 |
| URI: | https://researchonline.ljmu.ac.uk/id/eprint/12414 |
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