Eubostrichus fertilis sp. n., a new marine nematode (Desmodoridae: Stilbonematinae) with an extraordinary reproductive potential from Belize, Central America

Scientists have identified Eubostrichus fertilis, a new species of marine nematode from the Belize Barrier Reef, distinguished by its small size (1.88–3.03 mm), stout body, and extraordinary reproductive potential—females can carry up to 18 eggs simultaneously. The discovery, supported by microscopic imaging and genetic analysis (18S rRNA gene sequencing), reveals unique morphological traits, including crescent-shaped bacteria spirally attached to its cuticle. Phylogenetic studies confirm Eubostrichus as a distinct genus, with E. fertilis closely related to E. parasitiferus and E. hopperi, differing in vulva position, amphid size, and tail shape. Additionally, the study proposes a taxonomic correction for Eubostrichus gerlachi, previously misclassified as E. parasitiferus.

Ott, J. A., Leisch, N., & Gruber-Vodicka, H. R. (2014). Eubostrichus fertilis sp. n., a new marine nematode (Desmodoridae: Stilbonematinae) with an extraordinary reproductive potential from Belize, Central America. Nematology, 16(7), 777–787. https://doi.org/10.1163/15685411-00002807