Genetic analysis of dicyemid infrapopulations suggests sexual reproduction and host colonization by multiple individuals is common
| Autor: | Jan Štefka, Eva Myšková, Tereza Flegrová, Marie Drábková, Václav Hypša |
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| Rok vydání: | 2021 |
| Předmět: |
0106 biological sciences
0301 basic medicine Genetic diversity Host (biology) Biology biology.organism_classification 010603 evolutionary biology 01 natural sciences Genetic analysis Sexual reproduction 03 medical and health sciences 030104 developmental biology Evolutionary biology Genetic variation Genotype Microsatellite Dicyemida Ecology Evolution Behavior and Systematics |
| Zdroj: | Organisms Diversity & Evolution. 21:437-446 |
| ISSN: | 1618-1077 1439-6092 |
| Popis: | Dicyemida is a group of small-bodied marine parasites infecting cephalopods with many unknown life history details, such as their population structure and diversity, and their relation to sexual and asexual reproductive stages. To reveal (infra)population structure of Dicyema moschatum Whitman, 1883 in its host (Eledone moschata Lamarck, 1798), we isolated microsatellite sequences from a draft genome of D. moschatum and tested the loci for amplification success and genetic diversity. Eight microsatellite loci were selected for an analysis of D. moschatum populations from several octopus individuals sampled at two Mediterranean localities. The majority of microsatellite alleles were shared across the studied range, but several private alleles were also identified. Analysis of population structure identified two to four genetic clusters, mostly concordant with the geographic origin of the samples. Allelic patterns seen in individual dicyemid genotypes revealed that although dicyemids inside one host individual show low genetic variance, they do not represent genetically identical clones. These results suggest that infection is established by several dicyemid larvae within the lifetime of the host and sexual reproduction of dicyemids occurs inside the host. |
| Databáze: | OpenAIRE |
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