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No evidence for strong cytonuclear conflict over sex allocation in a simultaneously hermaphroditic flatworm

Vellnow, Nikolas and Vizoso, Dita B. and Viktorin, Gudrun and Schärer, Lukas. (2017) No evidence for strong cytonuclear conflict over sex allocation in a simultaneously hermaphroditic flatworm. BMC evolutionary biology, 17. p. 103.

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Official URL: https://edoc.unibas.ch/59442/

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Abstract

Background: Cytoplasmic sex allocation distorters, which arise from cytonuclear conflict over the optimal investment into male versus female reproductive function, are some of the best-researched examples for genomic conflict. Among hermaphrodites, many such distorters have been found in plants, while, to our knowledge, none have been clearly documented in animals. Methods: Here we provide a quantitative test for cytonuclear conflict over sex allocation in the simultaneously hermaphroditic flatworm Macrostomum lignano. We used a quantitative genetic breeding design, employing pair-wise crosses of 2 × 15 independent inbred lines, to partition the phenotypic variance in several traits (including sex allocation) into its nuclear and cytoplasmic components. Results: Although the nuclear genetic background had a significant effect on all traits analyzed, we found significant cytoplasmic genetic variation only for ovary size, there explaining just 4.1% of the variance. A subsequent statistical power analysis showed that the experimental design had considerable power to detect cytonuclear interactions.
Faculties and Departments:05 Faculty of Science > Departement Umweltwissenschaften > Integrative Biologie > Evolutionary Biology (Schärer)
UniBasel Contributors:Schärer, Lukas
Item Type:Article, refereed
Article Subtype:Research Article
Publisher:BioMed Central
ISSN:1471-2148
Note:Publication type according to Uni Basel Research Database: Journal article
Identification Number:
Last Modified:02 Sep 2020 09:57
Deposited On:02 Sep 2020 09:57

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