Today, I want to introduce a fascinating group of worms that are particularly relevant during the Christmas season. Known as Christmas tree worms, these marine annelids belong to the family Serpulidae. They are renowned for their radiolar crowns and their habit of dwelling within calcareous tubes attached on […]

This month I wish to present a group that I have been working on for nearly 30 years, the angiosperm genus Viola which comprises violets and pansies (Figure 1). Our group recently produced a monograph of the genus (Marcussen et al. 2022) – the first comprehensive (and very […]

This month, we will present to you the boring worms. These are worms of different genera, which belong to the polychaete family Spionidae. Polychaetes are also called bristle worms as the often have a large number (poly) of bristles (chaetae) on their segments. The family Spionidae is a […]

Denne måneden vil vi presentere de “boring” ormene. Dette er ormer av forskjellige slekter, som tilhører polychaete-familien Spionidae. Polychaeter kalles også flerbørstemarker, ettersom de ofte har et stort antall (poly) børster (chaetae) på segmentene sine. Familien Spionidae er en familie som omfatter mer enn 600 arter i mer […]

This month, I wish to present a very beautiful invertebrate phyla, namely Phoronida – also known as Horseshoe worms.   The phylum is fairly small, with 13 recognized living species, divided into two genera; Phoronis and Phoronopsis. They are found within the phylogenetic grouping of Lophotrochozoa, more specific […]

For this month’s group, I’m presenting you one of the three groups I am working with here at CEG group, the gregarines (Gregarisina, Apicomplexa). I got to know this group during my PhD research and I grew fond of them as study system for marine symbiosis. Gregarines are […]

I månedens gruppe i april tar vi for oss en hel fyla!Loricifera er en av de nyere gruppene, og ble først oppdaget i 1983. Siden den gang har 44 arter blitt navngitt, fra Frankrike til Antarktis og Japan, og flere oppdages hvert år. Jeg skrev en artikkel om […]

For April’s group of the month, we’re tackling a whole phylum! As phyla go, Loricifera are one of the newer kids on the block, having been first discovered in only 1983. Since then, 44 species have been named, ranging from France to Antarctica to Japan, and more are […]

Today I’m going to be talking about some cute little slugs, the Onchidioideans. These pulmonate, that is, lung-bearing, gastropods are ubiquitous across the Atlantic and Pacific coastlines, favoring the intertidal. What makes so many gastropods so interesting is their torsion, the rotational steps they undergo during development resulting […]

This month, I would like to present something different from my usual worms: the nudibranchs (order nudibranchia), otherwise known as sea slugs. They are not an organism I have ever studied or worked with, but I encounter them regularly while looking for worms. And one thing I particularly […]