Population genetics of the freshwater red alga Batrachospermum gelatinosum (Rhodophyta) I: Frequent intragametophytic selfing in a monoicous, haploid–diploid species

Life cycles with a prolonged haploid phase are thought to be correlated with greater rates of selfing and asexual reproduction. In red algae, recent population genetic studies have aimed to test this prediction but have mostly focused on marine species with separate sexes. We characterized the repro...

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Bibliographic Details
Published in:Journal of phycology 2024-12, Vol.60 (6), p.1420-1436
Main Authors: Shainker‐Connelly, Sarah J., Crowell, Roseanna M., Stoeckel, Solenn, Vis, Morgan L., Krueger‐Hadfield, Stacy A.
Format: Article
Language:English
Subjects:
Abiotic factors
Algae
Asexual reproduction
Batrachospermum gelatinosum
Diploids
Diploidy
Fresh Water
Freshwater
Gametophytes
Genetic diversity
Genetic variation
Genetics
Genetics, Population
Genotypes
Germ Cells, Plant - physiology
Haploidy
Hermaphroditism
Heterozygosity
Inland water environment
Life cycle
Life cycles
mating system
Microsatellite Repeats
Microsatellites
ploidy
Population (statistical)
Population genetics
Population studies
Predictions
Reproduction
Reproduction, Asexual
Reproductive system
Rhodophyta
Rhodophyta - genetics
Rhodophyta - physiology
sexual system
stream
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Summary:Life cycles with a prolonged haploid phase are thought to be correlated with greater rates of selfing and asexual reproduction. In red algae, recent population genetic studies have aimed to test this prediction but have mostly focused on marine species with separate sexes. We characterized the reproductive system of the obligately monoicous (i.e., hermaphroditic) freshwater red alga Batrachospermum gelatinosum and predicted that we would find genetic signatures of uniparental reproduction because of its haploid‐diploid life cycle. We sampled 18 sites and genotyped 311 gametophytes with 10 polymorphic microsatellite loci to describe the reproductive system. Genotypic richness was low (
ISSN:0022-3646
1529-8817
1529-8817
DOI:10.1111/jpy.13510