Sexual selection in seaweed? Testing Bateman's principles in the red algaGracilaria gracilis DOI
Emma Lavaut, Myriam Valéro, Stéphane Mauger

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2023, Volume and Issue: 290(2006)

Published: Sept. 13, 2023

In anisogamous species, sexual selection is expected to be stronger in males. Bateman's principles state that the variance (i) reproductive and (ii) mating success greater for males, (iii) relationship between (the Bateman gradient) also males than females. Sexual selection, based on principles, has been demonstrated animals some angiosperms, but never a seaweed. Here we focus oogamous haploid-diploid rhodophyte Gracilaria gracilis which previous studies have shown evidence non-random mating, suggesting existence of male–male competition female choice. We estimated using paternity analyses natural population where up 92% fertilizations occurred partners population. The results show significantly females gradient positive only Distance explains minor part male success. Although there no dimorphism, our study supports hypothesis occurs G. , probably traits, even if cannot observe, characterize or quantify them yet.

Language: Английский

Evolution of parental care in haploid–diploid plants DOI Creative Commons
Kazuhiro Bessho, Akira Sasaki

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2024, Volume and Issue: 291(2016)

Published: Feb. 14, 2024

In bryophytes that alternate between haploid gametophytes and diploid sporophytes through sexual reproduction, are often attached to nurtured on the female gametophyte. A similar phenomenon is seen in Florideophyceae (a group of red algae). These systems which a gametophyte (mother) invests nutrients (offspring) ideal for studying evolution ‘parental care’ non-animal organisms. Here, we propose model haploid–diploid life cycle examine maternal investment focusing two effects: degree paternal or control number sporophytes. We find when dominantly controls investment, evolutionarily stable level maximizes expected reproductive success The genomic conflict alleles complicates evolutionary outcome; however, greater male allelic effect higher favour energy may lead branching run-away escalation level. This suggests selfishness gene driver parental care complex structures such as fusion cells algae have evolved suppress it.

Language: Английский

Citations

1
Sexual selection in seaweed? Testing Bateman's principles in the red algaGracilaria gracilis DOI
Emma Lavaut, Myriam Valéro, Stéphane Mauger

et al.

Proceedings of the Royal Society B Biological Sciences, Journal Year: 2023, Volume and Issue: 290(2006)

Published: Sept. 13, 2023

In anisogamous species, sexual selection is expected to be stronger in males. Bateman's principles state that the variance (i) reproductive and (ii) mating success greater for males, (iii) relationship between (the Bateman gradient) also males than females. Sexual selection, based on principles, has been demonstrated animals some angiosperms, but never a seaweed. Here we focus oogamous haploid-diploid rhodophyte Gracilaria gracilis which previous studies have shown evidence non-random mating, suggesting existence of male–male competition female choice. We estimated using paternity analyses natural population where up 92% fertilizations occurred partners population. The results show significantly females gradient positive only Distance explains minor part male success. Although there no dimorphism, our study supports hypothesis occurs G. , probably traits, even if cannot observe, characterize or quantify them yet.

Language: Английский

Citations

2