Andreas Altenburger

Andreas Altenburger
UiT The Arctic University of Norway · The Arctic University Museum of Norway

PhD

About

47
Publications
8,576
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313
Citations
Citations since 2017
33 Research Items
227 Citations
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Introduction
My research interests are in marine invertebrate zoology, developmental biology, evolutionary morphology, protozoology, and eukaryote phylogeny. I am particularly interested in the discovery and description of marine organismal diversity. I focus on the diversity and evolution of organisms, and the evolution of symbiotic interactions between algae and invertebrate animals and protists. My lab uses comparative molecular methods, as well as bio-imaging in order to study animal evolution.
Additional affiliations
May 2016 - December 2019
University of Copenhagen
Position
  • PostDoc Position
February 2012 - June 2015
University of Copenhagen
Position
  • PostDoc Position

Publications

Publications (47)
Article
Full-text available
The HHUMTL22 cruise onboard R/V Helmer Hanssen was an initiative by The Arctic University Museum of Norway (UMAK) aimed at sampling marine fauna for the museum collections and various research projects undertaken at the museum. Researchers from the Swedish Museum of Natural History and the Department of Evolutionary Biology at the University of Vie...
Article
Full-text available
The Nansen Legacy (NL) JC3 cruise (19.02.-11.03.2022) aimed to fill regional, temporal and scientific gaps following the earlier NL cruises, in particular during the winter-to-spring transition and in the northern part of the NL transect to the Nansen Basin. Joint physical, chemical, and biological sampling and experiments for new technology addres...
Data
Overview over specimens of Gastropoda that are stored in the collection of the Arctic University Museum of Norway (previously Tromsø Museum).
Data
Overview over specimens of Cnidaria and Ctenophora (the obsolete Radiata, hence TSZR) that are stored in the collection of the Arctic University Museum of Norway (previously Tromsø Museum).
Data
Overview over specimens of Bivalvia that are stored in the collection of the Arctic University Museum of Norway (previously Tromsø Museum)
Data
Echinodermata from the collection of the Arctic University Museum of Norway (Tromsø Museum)
Data
Crustacea from the collection of the Arctic University Museum of Norway (Tromsø Museum)
Data
Chelicerata (Arachnida and Pycnogonida) from the collection of the Arctic University Museum of Norway (Tromsø Museum)
Data
Overview over specimens of Annelida that are stored in the collection of the Arctic University Museum of Norway (Tromsø Museum)
Article
Aims Microorganisms play a dichotomous role in the soil nitrogen cycle through mineralization and immobilization. We aimed to understand how nitrogen availability modifies the effect of microorganisms on plant growth. We hypothesized that soil microorganisms would increase plant biomass following amendment with a substrate rich in organic nitrogen...
Article
Full-text available
Ciliates within the Mesodinium rubrum/M. major species complex harbour chloroplasts and other cell organelles from specific cryptophyte species. M. major was recently described, and new studies indicate that blooms of M. major are just as common as blooms of M. rubrum. Despite this, the physiology of M. major has never been studied and compared to...
Data
Overview over specimens of tunicates that are stored in the collection of the Arctic University Museum of Norway (Tromsø Museum)
Data
Foraminifera and other protozoa from the collection of the Arctic University Museum of Norway (Tromsø Museum)
Article
Full-text available
The Southern Ocean is one of the most productive ecosystems in the world. It is an area heavily dependent on marine primary production and serving as a feeding ground for numerous seabirds and marine mammals. Therefore, the phytoplankton composition and presence of toxic species are of crucial importance. Fifteen monoclonal strains of Pseudo-nitzsc...
Data
Overview over specimens of Bryozoa, Brachiopoda and Entoprocta that are stored in the collection of the Arctic University Museum of Norway (Tromsø Museum).
Data
Occurence data set on GBIF including various marine animal groups including Acanthocephala, Chaetognatha, Echiura, Hemichordata, Myzozoa, Nematoda, Nematomorpha, Platyhelminthes, Porifera, Priapulida, and Sipuncula from the collection of the Arctic University Museum of Norway (Tromsø Museum).
Article
The marine ciliate Mesodinium rubrum is famous for its ability to acquire and exploit chloroplasts and other cell organelles from some cryptophyte algal species. We sequenced genomes and transcriptomes of free-swimming Teleaulax amphioxeia, as well as well-fed and starved M. rubrum in order to understand cellular processes upon sequestration under...
Article
Full-text available
Growing evidence suggests that sexual reproduction might be common in unicellular organisms, but observations are sparse. Limited knowledge of sexual reproduction constrains understanding of protist ecology. Although Teleaulax amphioxeia and Plagioselmis prolonga are common marine cryptophytes worldwide, and are also important plastid donors for so...
Article
Full-text available
Ciliates represent an important trophic link between nanoplankton and mesoplankton. Many species acquire functional chloroplasts from photosynthetic prey, being thus mixotrophs. Little is known about which algae they exploit, and of the relevance of inorganic carbon assimilation to their metabolism. To get insights into these aspects, laboratory cu...
Preprint
The marine ciliate Mesodinium rubrum is famous for its ability to acquire and exploit chloroplasts and other cell organelles from some cryptophyte algal species. We sequenced genomes and transcriptomes of free-swimming Teleaulax amphioxeia, as well as well-fed and starved M. rubrum in order to understand cellular processes upon sequestration under...
Article
Full-text available
To understand and manipulate the interactions between plants and microorganisms, sterile seeds are a necessity. The seed microbiome (inside and surface microorganisms) is unknown for most plant species and seed-borne microorganisms can persist and transfer to the seedling and rhizosphere, thereby obscuring the effects that purposely introduced micr...
Article
Full-text available
Elysia chlorotica, a sacoglossan sea slug found off the East Coast of the United States, is well-known for its ability to sequester chloroplasts from its algal prey and survive by photosynthesis for up to 12 months in the absence of food supply. Here we present a draft genome assembly of E. chlorotica that was generated using a hybrid assembly stra...
Data
This file contains the tentative identifications or massess of compounds either common to or distinct for each of Dinophysis acuminata and Dinophysis acuta
Article
Full-text available
Photosynthetic species of the genus Dinophysis are obligate mixotrophs with temporary plastids (kleptoplastids) that are acquired from the ciliate Mesodinium rubrum, which feeds on cryptophytes of the Teleaulax-Plagioselmis-Geminigera clade. A metabolomic study of the three-species food chain Dinophysis-Mesodinium-Teleaulax was carried out using ma...
Article
Due to their small size, microorganisms can be widely dispersed and they colonize sterilized soils fast. However, details regarding quickness and successional patterns are poorly understood. We investigated the ability of airborne microorganisms to colonize sterilized soil at different heights above ground, and at different distances to a tree. Soi...
Article
Full-text available
Background Kinorhynchs are ecdysozoan animals with a phylogenetic position close to priapulids and loriciferans. To understand the nature of segmentation within Kinorhyncha and to infer a probable ancestry of segmentation within the last common ancestor of Ecdysozoa, the musculature and the nervous system of the allomalorhagid kinorhynch Pycnophyes...
Article
Full-text available
A new kinorhynch species, Zelinkaderes yong sp. nov., is described from Korea. Zelinkaderes yong sp. nov. is described from coastal, sandy habitats in Korea by means of light and scanning electron microscopic techniques. The new species is characterized by the presence of cuspidate spines in lateroventral positions on segments 2 and 9, ventrolater...
Article
Full-text available
We revisited the brachiopod fold hypothesis and investigated metamorphosis in the craniiform brachiopod Novocrania anomala. Larval development is lecithotrophic and the dorsal (brachial) valve is secreted by dorsal epithelia. We found that the juvenile ventral valve, which consists only of a thin layer that was previously described as periostracal,...
Article
We investigated microbiota in surface and subsurface soil from a site, above steam-treated deep sub-soil originally contaminated with chlorinated solvents. During the steam treatment, the surface soil reached temperatures c. 30 degrees C higher than the temperature in untreated soil; whereas the subsurface soil, at a depth of about 40 cm, reached a...
Article
Different features can protect bacteria against protozoan grazing, for example large size, rapid movement, and production of secondary metabolites. Most papers dealing with these matters focus on bacteria. Here, we describe protozoan features that affect their ability to grow on secondary-metabolite-producing bacteria, and examine whether different...
Article
We know little about the ability of protozoa to colonize soils, including their successional patterns. To elucidate this issue, we investigated in which order different protozoan morpho-types colonize sterile soil. We used sterilized soils with different carbon content, and exposed them to the atmosphere for a period of 14 months. Bacteria and flag...
Conference Paper
Full-text available
Although most recent phylogenetic analyses include Brachiopoda within Lophotrochozoa, the brachiopod sistergroup relationships within this superclade remain unsettled. In order to shed more light on this issue we investigated the development of the musculature and the nervous system in lecitothropic larvae of rhynchonelliform and craniiform brachio...
Article
The phylogenetic position of Brachiopoda remains unsettled, and only few recent data on brachiopod organogenesis are currently available. In order to contribute data to questions concerning brachiopod ontogeny and evolution we investigated nervous and muscle system development in the craniiform (inarticulate) brachiopod Novocrania anomala. Larvae o...
Article
Full-text available
Despite significant methodological progress, Brachiopoda remains one of the lophotrochozoan phyla for which no recent ontogenetic data employing modern methodologies such as fluorescence labelling and confocal microscopy are available. This is particularly astonishing given the ongoing controversy concerning its phylogenetic position. In order to c...
Data
Larval musculature of Argyrotheca cordata. Movie of a confocal scan through a fully developed larva of Argyrotheca cordata to illustrate the three-dimensional arrangement of the larval musculature.
Article
Background: Despite significant methodological progress, Brachiopoda remains one of the lophotrochozoan phyla for which no recent ontogenetic data employing modern methodologies such as fluorescence labelling and confocal microscopy are available. This is particularly astonishing given the ongoing controversy concerning its phylogenetic position. I...

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Projects

Projects (4)
Project
Survey of marine invertebrates of Northern Norway. Museum collection based research.
Archived project
Project
The IV Scalidophora Workshop was celebrated in Galicia (Spain) in September, 2015. Main results and communications have been collected in a Special Volume of Zoologischer Anzeiger: Zoologischer Anzeiger - A Journal of Comparative Zoology Volume 265, Pages 1-190 (November 2016) Fourth International Scalidophora Workshop Edited by Martin Sørensen and Fernando Pardos http://www.sciencedirect.com/science/journal/00445231/265