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Introduction
I'm currently working with integrative taxonomy and systematics of terrestrial Annelida. During my PhD studies I studies the diversity of mainly earthworms (Lumbricidae) and potworms (Enchytraeidae) in Northern Europe using an integrative approach, combining several methods and data sources, e.g. molecular, morphological and cytological data. But I have been, and are still also, working with with detection of invasive species using eDNA.
Additional affiliations
March 2017 - May 2017
February 2017 - March 2017
January 2012 - February 2017
Position
- Teaching assistent
Description
- During my PhD studies I have also been a teaching assistant, running labs, exercises and excursions mainly in courses in zoological systematics/evolution and ecology
Education
September 2008 - June 2010
September 2005 - June 2008
Independent Researcher
Field of study
- Biology
Publications
Publications (70)
The white worm Enchytraeus albidus Henle, 1837 (Clitellata, Enchytraeidae) is easy to keep in laboratory cultures, and has therefore been employed as a model organism in basic and applied biological research. Its natural habitat includes terrestrial composts and wrack beds on seashores. However, the name E. albidus is currently used for a complex o...
Methods for species delimitation using molecular data have developed greatly and have become a staple in systematic studies of clitellate worms. Here we give a historical overview of the data and methods used to delimit clitellates from the mid-1970s to today. We also discuss the taxonomical treatment of the cryptic species, including the recommend...
We report on the Scandinavian distribution of two earthworm species, Helodrilus oculatus and Satchellius mammalis. Both appear relatively new to the Scandinavian Peninsula, as they were not included in the monographic revisions of the earthworm fauna of Sweden and Norway in the mid-1900s. We provide recent records of both species from Norway and Sw...
Lumbricillus is one of the largest enchytraeid genera and its species can mainly be found on the coasts of temperate and polar regions around the world. However, the monophyly of the genus has been questioned by recent molecular studies. In this paper we further examine the phylogenetic relationships of Lumbricillus species and their close relative...
Identification of organism groups such as Oligochaetes to species level is difficult to achieve using morphological examination alone. This is especially true in species where sexual reproduction is rare, such as the subfamily Naidedae. Here, variation in the barcoding marker COI of three genera of freshwater clitellates, Dero, Nais, and Pristina (...
The marine littoral earthworm Pontodrilus litoralis (Grube, 1855) is widely distributed and is reported as a single species. This study utilized an integrative taxonomic approach based upon morphological examination, phylogenetic reconstruction, and molecular species delimitation, to test whether the taxon is a single species or a species complex....
Freshwater annelids are globally widespread in aquatic ecosystems, but their diversity is severely underestimated. Obvious morphological features to define taxa are sparse, and molecular phylogenetic analyses regularly discover cryptic diversity within taxa. Despite considerable phylogenetic work on certain clades, many groups of freshwater annelid...
Artificial substrates associated with renewable offshore energy infrastructure, such as floating offshore wind farms, enable the establishment of benthic communities with a taxonomic composition similar to that of naturally occurring rocky intertidal habitats. The size of the biodiversity impact and the structural changes in benthic habitats will d...
The nudibranch genus Doto is taxonomically problematic in particular, and some species are described on the notion of strict monophagy. Here we perform species delimitation on NE Atlantic species, as well as placing them phylogenetically, using two markers: the mitochondrial COI and the nuclear H3. We also study the morphology of the species includ...
Enchytraeid worms collected in South Africa and on the Marion, South Orkney, South Georgia and South Shetland Islands during 2008–2015 were studied using morphology and seven genetic markers. Nine species were recognized: one terrestrial (Christensenidrilus blocki) and all the others marine littoral (five Lumbricillus and three Marionina s.s.). An...
Enchytraeid worms collected in South Africa and on the Marion, South Orkney, South Georgia and South Shetland Islands during 2008–2015 were studied using morphology and seven genetic markers. Nine species were recognized: one terrestrial (Christensenidrilus blocki) and all the others marine littoral (five Lumbricillus and three Marionina s.s.). An...
The purpose of this application, under Article 23.9.3 of the Code, is to conserve the well-used names Propappus Michaelsen, 1905 and Propappidae Coates, 1986 (Annelida) by suppression of the senior homonym Propappus Seeley, 1888 (Reptilia), a junior subjective synonym of Pareiasaurus Owen, 1876.
Background:
Deep mitochondrial divergences were observed in Scandinavian populations of the terrestrial to semi-aquatic annelid Fridericia magna (Clitellata: Enchytraeidae). This raised the need for testing whether the taxon is a single species or a complex of cryptic species.
Results:
A total of 62 specimens from 38 localities were included in...
A survey of aquatic Oligochaeta was conducted at Thiruvallur, Chennai, Kanchipuram, Villupuram and Nilgiris districts of Tamil Nadu from October 2015 to June 2016. Eleven taxa were recorded from a total of 922 specimens examined, eight of them were identified to species level. Five naidids identified during the present study: Branchiodrilus semperi...
The identity and validity of the freshwater worm Dero indica (Clitellata: Naididae; Naidinae) has been debated, and it has been suggested that it is likely to be identical with D. digitata. In this study we combine a newly generated COI sequence of D. indica with available sequences from GenBank, to estimate the phylogeny of Dero using both Bayesia...
Morphological characters for identification of Cognettia species are presented both as a dichotomous key and in table form.
Focus is on non-sexual characters, as many species reproduce mainly asexually, and sexually mature individuals can be rare.
Chamaedrilus (earlier referred to as Cognettia) is a well-known genus of terrestrial and limnic enchytraeids, currently with 19 known species in the world. Some of its species are morphologically cryptic and can only be identified using genetic (DNA) information. Many of them reproduce asexually, and the prevalence of sexual mature individuals is g...
The clitellate branchiate genus Branchiodrilus presently includes three nominal species with a mainly tropical distribution. A recent molecular phylogeny of the subfamily Naidinae suggested that species complexes may occur within the genus. In order to delimit species, we studied a total of 91 Branchiodrilus specimens collected in Asia, Africa and...
The small synanthropic and peregrine earthworm Microscolex phosphoreus (Dugès, 1837) is reported for the first time from Siberia. Morphological and DNA barcode (COI) analyses of this and widely separate samples worldwide demonstrate that, as currently identified, M. phosphoreus is a heterogeneous taxon, with divergent lineages occurring often in th...
Two bioluminescent enchytraeids, Henlea petushkovi sp. n. and Henlea rodionovae sp. n., are described from the Krasnoyarsk and Irkutsk regions in Eastern Siberia. These large potworms exhibit the typical light-production pattern reported repeatedly in the genus and recently elucidated by Russian researchers in its main biophysical and biochemical a...
Using a two-step workflow, we test the species boundaries in three genera of enchytraeid worms, Globulidrilus, Hemifridericia and Stercutus (Clitellata: Enchytraeidae), which contains one to three nominal species each. For the species discovery phase, DNA barcode-based clustering analyses in ABGD (Automatic Barcode Gap Discovery) are performed, usi...
The earthworms Eisenia fetida and E. andrei are closely related and can hybridise under laboratory conditions,
but it is not known if they hybridise under more natural conditions. The two species are genetically well separated,
but within E. fetida there is also a deep split forming two well separated mitochondrial lineages. In the
present study, 6...
During the 12th International Symposium on Enchytraeidae, held in Tihany, Hungary (27–29 June 2016), the
participants discussed cryptic species, i.e., species that are morphologically so similar that they are classified as the same
species (Bickford et al. 2007), and how to deal with them taxonomically. Here we summarise the discussion together wit...
I Sverige finns ett 90-tal arter av nakensnäckor, som hör till gruppen Opisthobranchia-bakgälade snäckor. En ny genetisk studie visar att den vanliga arten snigelkott faktiskt består av två arter.
Limnodrilus species are annelid worms distributed worldwide in various freshwater sediments. The systematics of Limnodrilus has chiefly been based on morphology, but the genus has not been subject to any closer phylogenetic studies over the past two decades. To reconstruct the evolutionary history of Limnodrilus, and to assess the monophyly of this...
The phylogeny of Enchytraeidae was re-estimated to establish the relationships of the now resurrected
Chamaedrilus and Euenchytraeus and to confirm their status as separate taxa. The former Cognettia (Enchytraeidae) was recently revised and split into its two senior synonyms, Chamaedrilus and Euenchytraeus, with the majority of the species transfer...
Limnodrilus hoffmeisteri Claparède, 1862 is a common freshwater worm, often regarded as an indicator of organic pollution. The taxonomic status of this species is controversial due to great variation in morphological features. Numerous morphological forms of L. hoffmeisteri are recorded in the literature, especially from Europe and North America. T...
The enchytraeid genus Lumbricillus comprises about 80 described species of clitellate worms,
which are up to a few centimetres long, and they mostly inhabit the littoral zone of nontropical
marine and brackish waters world-wide. The phylogeny of this genus is poorly
studied, but previous work has suggested that Lumbricillus is a non-monophyletic gr...
Cryptic mitochondrial (mt) lineages are known to exist in the earthworm morphospecies Lumbricus rubellus and L. terrestris. The latter was recently split into two species, L. terrestris and L. herculeus, based on large genetic distances and a statistical difference in body size. There is support for the separation of some lineages in L. rubellus in...
A species of marine limnodriloidine oligochaete, Thalassodrilides cf. briani Erséus, 1992, is recorded from gravelly sand sediments of the subtidal zone in Ehime Prefecture, Japan. The present material agrees with the original description of T. briani, which was first found at Hong Kong, with the exception that the copulatory sacs are oval; not sle...
The biological diversity in the soil is much higher than most people can imagine, and a very important group of animals living there are earthworms and other clitellate worms. It has been found that several clitellate morphospecies are in fact complexes of so called cryptic species, and the number of species in this group may be much higher than pr...
Recent molecular studies have identified substantial fungal diversity in indoor environments. Fungi and fungal particles have been linked to a range of potentially unwanted effects in the built environment, including asthma, decay of building materials, and food spoilage. The study of the built mycobiome is hampered by a number of constraints, one...
An aberrantly coloured male Golden Whistler Pachycephala pectoralis, lacking yellow pigment, is reported from the Bellarine Peninsula, Victoria. This could be the first documented case of this colour aberration in the species.
We analysed samples of Sparganophilus taken at the corners of its distribution area in Europe (UK, Germany and Italy). No mitochondrial genetic divergence within and amongst them was found, neither in COI nor in 16S. Further, the COI haplotype was also identical to two sequences from Ontario, Canada in the Barcoding of Life Data System (BOLD) datab...
DNA-barcoding, using the mitochondrial marker COI, has been found successful for the identification of specimens in many animal groups, but may not be suited for species discovery and delimitation if used alone. In this study, we investigate whether two observed COI haplogroups in the earthworm Aporrectodea longa correspond to two cryptic species o...
As we were responsible for re-establishing Euenchytraeus Bretscher, 1906 and
Chamaedrilus Friend, 1913, suggesting that Cognettia Nielsen & Christensen, 1959
should be treated as a junior synonym of Chamaedrilus (Martinsson et al., 2014; cited
as 2015a by Schmelz et al.), we would like to give some supplementary information
on the case, and also ex...
Using DNA-barcoding, we studied the diversity of invasive European earthworms in the south-western corner of Australia. We found six Molecular Operational Taxonomic Units belonging to five morphospecies: Aporrectodea caliginosa, A. trapezoides, Dendrobaena cf. attemsi, Eiseniella tetraedra and Octolasion cyaneum. These were variously collected from...
[This corrects the article DOI: 10.3897/zookeys.501.9279.].
The taxonomy of Chamaedrilus
glandulosus (Michaelsen, 1888) s. l., most commonly known previously as Cognettia
glandulosa, is revised. A recent molecular systematic study has shown that this taxon harbours two cryptic, but genetically well separated lineages, each warranting species status. In this study these two lineages are scrutinized morpholog...
The oligochaete worm, Cognettia sphagnetorum (Vejdovský, 187872.
Vejdovský, F. (1878). Zur Anatomie und Systematik der Enchytraeiden. Sitzungsberichte der Königlich Böhmischen Gesellschaft der Wissenschaften, 1877, 294–304.View all references), is widely used as a model organism in soil biology, and therefore it is important that its taxonomy is fi...
Ancistrocerus waldenii waldenii (Viereck 1906) is newly recorded from West Greenland. This is a new northern limit for the species.
Plant pathogenic fungi are a large and diverse assemblage of eukaryotes with substantial impacts on natural ecosystems and human endeavours. These taxa often have complex and poorly understood life cycles, lack observable, discriminatory morphological characters, and may not be amenable to in vitro culturing. As a result, species identification is...
The genetic and morphological variation within Rhyacodrilus falciformis Bretscher, 1901 (Clitellata: Naididae) in Europe was explored using an integrative approach, with three unlinked genetic markers [the mitochondrial cytochrome c oxidase subunit I (COI), the nuclear histone 3 (H3) and internal transcribed spacer region (ITS)] combined with morph...
The terrestrial worm Cognettia sphagnetorum has been used as a model in several studies focusing on research areas such as climate change as well as forest and soil ecology; it has also been shown to play a key role in the decomposition of organic matter and nutrient cycling. Cognettia is an enchytraeid genus commonly found in acidic terrestrial ha...
Lake Hazar is an alkaline oligotrophic lake of tectonic origin, located in the Eastern Anatolia region in Turkey, 1248 m a.s.l. Its surface area is 80 km2, the average depth 93 m and maximum depth 205 m. The lake and its surroundings are under protection as a region of historical value. During the present study (2007–2012), samples were taken from...
The genetic and morphological variation within Rhyacodrilus falciformis Bretscher, 1901 (Clitellata: Naididae) in Europe was explored using an integrative approach, with three unlinked genetic markers [the mitochondrial cytochrome c oxidase subunit I (COI), the nuclear histone 3 (H3) and internal transcribed spacer region (ITS)] combined with morph...
AbstractThe genus Katatopygia
gen. n. is proposed for the Boletina erythropyga/punctus-group that was first introduced by Garrett (1924, 1925) and currently comprises eight described species. Molecular studies have strongly indicated that this group forms a monophyletic sister-group to a clade consisting of all other Boletina, Coelosia and Gnoriste...
The genus Katatopygia gen. n. is proposed for the Boletina erythropyga/punctus-group that was first introduced by Garrett (1924, 1925) and currently comprises eight described species. Molecular studies have strongly indicated that this group forms a monophyletic sister-group to a clade consisting of all other Boletina, Coelosia and Gnoriste, and it...
Martinsson, S., Kjærandsen, J. & Sundberg, P. (2011). Towards a molecular phylogeny of the fungus gnat genus Boletina (Diptera: Mycetophilidae). — Zoologica Scripta , 40 , 272–281.
Boletina is a species rich genus of fungus gnats (Diptera: Mycetophilidae) with a mainly Holarctic distribution. The systematics within the genus has gained little atten...
New records for some rare and redlisted species of fungus gnats in the family Keroplatidae recorded in the Swedish Malaise Trap Project are given. Asindulum nigrum Latreille, 1805 is reported from the province of Uppland, from were it was considered gone; Rutylapa ruficornis (Zetterstedt, 1851), previously considered regionally extinct, is reported...
The five Nordic species of the genus Urytalpa Edwards (Diptera: Keroplatidae) are revised, of which one species, Urytalpa galdes Hedmark & Kjaerandsen, sp.n., is described as new to science based on males collected in northern Sweden. We find that the original type species assignment for Urytalpa (Platyura ochracea Meigen, 1818) is based on a misid...
Questions
Questions (2)
The website for the web interface for the genealogical sorting index (gsi) is down, and it seems hard to find the r-package as well. Therefore I need an alternative. What do you suggest? I need to test whether morphotypes, as well as ploidy levels are sorted according to the phylogeny, in all may cases they don't seem to be monophyletic, but I see a pattern, but I need to test it it is significant.
