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| Main Authors: | , , , , , , , |
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| Format: | Artículo científico |
| Language: | en |
| Published: |
Proceedings. Biological sciences
2025
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| Subjects: | |
| Online Access: | https://pubmed.ncbi.nlm.nih.gov/40801084/ |
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| _version_ | 1868266165174796289 |
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| author | Gresham, Jennifer D Clark, Anna Keck, Chloe M T Longmire, Alexis E Nelson, Abye E Quertermous, Haylee White, Ashley B Earley, Ryan |
| author_facet | Gresham, Jennifer D Clark, Anna Keck, Chloe M T Longmire, Alexis E Nelson, Abye E Quertermous, Haylee White, Ashley B Earley, Ryan Gresham, Jennifer D Clark, Anna Keck, Chloe M T Longmire, Alexis E Nelson, Abye E Quertermous, Haylee White, Ashley B Earley, Ryan |
| collection | PubMed - marine biology |
| contents | Variation in self-compatibility among genotypes and across ontogeny in a self-fertilizing vertebrate, . Gresham, Jennifer D Clark, Anna Keck, Chloe M T Longmire, Alexis E Nelson, Abye E Quertermous, Haylee White, Ashley B Earley, Ryan Animals Self-Fertilization Cyprinodontiformes Female Male Genotype Hermaphroditic Organisms Fertility Mixed-mating strategies can maximize the benefits and limit the costs of both self-fertilization and outcrossing. In addition to ecological conditions and population dynamics, the economics of mixed mating are determined by individual self-compatibility, i.e. the proportion of self-fertilization events that result in viable offspring. In gynodioecious (hermaphrodites and females) and androdioecious (hermaphrodites and males) species, self-compatibility of hermaphrodites dictates the reproductive potential of the other sex and can exert strong selection on maintenance of the non-hermaphroditic sex. Mangrove rivulus fish populations are androdioecious, and males result from hermaphrodites changing sex. Hermaphrodites overwhelmingly reproduce through internal self-fertilization, but occasionally oviposit unfertilized eggs, which males can fertilize externally. We tested the hypotheses that self-compatibility and fecundity would vary with age and as a function of genotypic variation in propensities for sex change. We reveal that fecundity and self-compatibility vary within individuals across ontogeny and among genotypes with different propensities to change sex. Hermaphrodites from genotypes that frequently change sex were significantly less fecund and self-compatible than hermaphrodites from genotypes that rarely change sex. These differences in self-compatibility and fecundity have the potential to drive mating strategy evolution in mangrove rivulus, specifically the fitness of males and associated spatiotemporal variation in sex ratios within and among populations. |
| format | Artículo científico |
| id | pubmed_40801084 |
| institution | PubMed |
| language | en |
| publishDate | 2025 |
| publisher | Proceedings. Biological sciences |
| record_format | pubmed |
| spellingShingle | Variation in self-compatibility among genotypes and across ontogeny in a self-fertilizing vertebrate, . Gresham, Jennifer D Clark, Anna Keck, Chloe M T Longmire, Alexis E Nelson, Abye E Quertermous, Haylee White, Ashley B Earley, Ryan Animals Self-Fertilization Cyprinodontiformes Female Male Genotype Hermaphroditic Organisms Fertility Variation in self-compatibility among genotypes and across ontogeny in a self-fertilizing vertebrate, . Gresham, Jennifer D Clark, Anna Keck, Chloe M T Longmire, Alexis E Nelson, Abye E Quertermous, Haylee White, Ashley B Earley, Ryan Animals Self-Fertilization Cyprinodontiformes Female Male Genotype Hermaphroditic Organisms Fertility Mixed-mating strategies can maximize the benefits and limit the costs of both self-fertilization and outcrossing. In addition to ecological conditions and population dynamics, the economics of mixed mating are determined by individual self-compatibility, i.e. the proportion of self-fertilization events that result in viable offspring. In gynodioecious (hermaphrodites and females) and androdioecious (hermaphrodites and males) species, self-compatibility of hermaphrodites dictates the reproductive potential of the other sex and can exert strong selection on maintenance of the non-hermaphroditic sex. Mangrove rivulus fish populations are androdioecious, and males result from hermaphrodites changing sex. Hermaphrodites overwhelmingly reproduce through internal self-fertilization, but occasionally oviposit unfertilized eggs, which males can fertilize externally. We tested the hypotheses that self-compatibility and fecundity would vary with age and as a function of genotypic variation in propensities for sex change. We reveal that fecundity and self-compatibility vary within individuals across ontogeny and among genotypes with different propensities to change sex. Hermaphrodites from genotypes that frequently change sex were significantly less fecund and self-compatible than hermaphrodites from genotypes that rarely change sex. These differences in self-compatibility and fecundity have the potential to drive mating strategy evolution in mangrove rivulus, specifically the fitness of males and associated spatiotemporal variation in sex ratios within and among populations. |
| title | Variation in self-compatibility among genotypes and across ontogeny in a self-fertilizing vertebrate, . |
| topic | Animals Self-Fertilization Cyprinodontiformes Female Male Genotype Hermaphroditic Organisms Fertility |
| url | https://pubmed.ncbi.nlm.nih.gov/40801084/ |