<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>Nematodes of the genus <italic>Auanema</italic> are interesting models for studying sex determination mechanisms because their populations consist of three sexual morphs (males, females, and hermaphrodites) and produce skewed sex ratios. Here, we introduce a new undescribed species of this genus, <italic>Auanema melissensis</italic> n. sp., together with its draft nuclear genome. This species is also trioecious and does not cross with the other described species <italic>A. rhodensis</italic> or <italic>A. freiburgensis</italic>. Similar to <italic>A. freiburgensis</italic>, <italic>A. melissensis</italic>’ maternal environment influences the hermaphrodite versus female sex determination of the offspring. The genome of <italic>A. melissensis</italic> is ~60 Mb, containing 11,040 protein-coding genes and 8.07% of repeat sequences. Using the estimated ancestral chromosomal gene content (Nigon elements), it was possible to identify putative X chromosome scaffolds.</p></abstract>

Nematodes of the genus Auanema are interesting models for studying sex determination mechanisms because their populations consist of three sexual morphs (males, females, and hermaphrodites) and produce skewed sex ratios. Here, we introduce a new undescribed species of this genus, Auanema melissensis n. sp., together with its draft nuclear genome. This species is also trioecious and does not cross with the other described species A. rhodensis or A. freiburgensis. Similar to A. freiburgensis, A. melissensis’ maternal environment influences the hermaphrodite versus female sex determination of the offspring. The genome of A. melissensis is ~60 Mb, containing 11,040 protein-coding genes and 8.07% of repeat sequences. Using the estimated ancestral chromosomal gene content (Nigon elements), it was possible to identify putative X chromosome scaffolds.

<italic>De novo</italic> Genome Assembly of <italic>Auanema melissensis</italic>, a Trioecious Free-Living Nematode

Journal of Nematology

This work is licensed under the Creative Commons Attribution 4.0 International License.

 Genome Assembly of , a Trioecious Free-Living Nematode

Nematodes of the genus Auanema are interesting models for studying sex determination mechanisms because their populations consist of three sexual morphs...

De novo Genome Assembly of Auanema melissensis, a Trioecious Free-Living Nematode

Article Category: Research paper

Published Online: Feb 07, 2023

Page range: -

Received: Sep 25, 2022

DOI: https://doi.org/10.2478/jofnem-2022-0059

Keywords
annotation, assembly, genomics, morphology, nematode, taxonomy, trioecious

© 2022 Tandonnet et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

De novo Genome Assembly of Auanema melissensis, a Trioecious Free-Living Nematode

Article Category: Research paper

Published Online: Feb 07, 2023

Page range: -

Received: Sep 25, 2022

DOI: https://doi.org/10.2478/jofnem-2022-0059

Keywordsannotation, assembly, genomics, morphology, nematode, taxonomy, trioecious

© 2022 Tandonnet et al., published by Sciendo

This work is licensed under the Creative Commons Attribution 4.0 International License.

Keywords
annotation, assembly, genomics, morphology, nematode, taxonomy, trioecious