Halamphora oceanica (Catenulaceae, Bacillariophyta), a new species from the epipelagic region of the southwestern Gulf of Mexico

Abstract

In the oceanic zones of the Gulf of Mexico a new species of diatom was found belonging to the genus Halamphora. Live cells were isolated using basic microbiological techniques for culturing and DNA analysis. Observations to determine morphological and morphometric characteristics were performed by both light and scanning electron microscopy. In addition, a phylogeny was built based on the expression and sequencing of the small subunit of the 18S gene. As a result of these observations, we conclude that this pennate diatom is a new species here proposed as Halamphora oceanica.

Halamphora minima (Catenulaceae, Bacillariophyta), new brackish diatom species from the mudflat in Hampyeong Bay, Korea

“…According to Guiry and Guiry (2022), there are currently 154 accepted species names and eight varieties in the genus Halamphora, because the genus has been proposed relatively recently. Moreover, the discovery of new species, mainly from isolated strains, is continuous in this genus (Jiang et al 2015, Olivares-Rubio et al 2017, López-Fuerte and Siqueiros-Beltrones 2018, Zhang et al 2019, López-Fuerte et al 2020.…”