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

Document Type

Article

Digital Object Identifier (DOI)

10.2478/jofnem-2022-0059

Journal Title

Journal of Nematology

Publication Date

2023

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.

Comments

The definitive article is available on the website of the Journal of Nematology - https://reference-global.com/journal/JOFNEM. 

Publisher Statement

This is an Open Access article licensed under the Creative Com- mons CC BY 4.0 license, https://creativecommons.org/licenses/by/4.0/. 

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