A5062254171- Marine animal studies overview
- Marine and fisheries research
- Arctic and Antarctic ice dynamics
- Cephalopods and Marine Biology
- Isotope Analysis in Ecology
- Marine Bivalve and Aquaculture Studies
- Toxic Organic Pollutants Impact
- Underwater Acoustics Research
- Identification and Quantification in Food
- Per- and polyfluoroalkyl substances research
- Fish Ecology and Management Studies
- Marine and coastal plant biology
- Morphological variations and asymmetry
- Marine and environmental studies
- Effects and risks of endocrine disrupting chemicals
- Ichthyology and Marine Biology
- Arctic and Russian Policy Studies
- Indigenous Studies and Ecology
- Air Quality and Health Impacts
- Virology and Viral Diseases
- Forensic Anthropology and Bioarchaeology Studies
- Maritime Navigation and Safety
- Archaeology and ancient environmental studies
- Avian ecology and behavior
- Geology and Paleoclimatology Research
University of Copenhagen
1997-2025
Natural History Museum Aarhus
2025
Frederiksberg Hospital
2013
Sankt Hans Hospital
2006
Copenhagen Zoo
1991
The dolphin genus Lagenorhynchus has included six species of dolphins characterized by short, wide rostra. Genetic analyses have consistently found the to be polyphyletic with four being in subfamily Lissodelphininae. A recent paper synthesized available molecular, morphological and acoustic evidence support a taxonomic revision genus, assigning L. obliquidens, obscurus, australis cruciger Sagmatias within Lissodelphiniae. Here, we add new phylogenomic data previously analyzed dataset...
Fish and marine mammal populations in the Baltic Sea Skagerrak have undergone major fluctuations over past five centuries. We summarize how these may depended on various forms of predation (e.g., cannibalism, fishing, hunting) environmental processes. The best-documented long-term fisheries this region are herring (Clupea harengus) near Bohuslän, western Sweden, Øresund. These been important since at least 1200s appear to be partly climatically driven. However, rest Baltic, information about...
The harbour porpoise is seriously depleted and threatened with extinction in the Baltic Sea. It usually assumed that porpoises form a separate population unit, although evidence for this has been disputed lately. Here, 3-D geometric morphometric approach was employed to test number of hypotheses regarding structure region. 277 skulls from Denmark, Sweden, Finland, Germany Poland were measured suite landmarks. Statistical analyses revealed highly significant shape differences between North...
Abstract The reproduction and reproductive seasonality of 365 Danish harbour porpoises (Phocoena phocoena (L.)) incidentally caught in various gill nets or stranded, was studied. animals were collected from all waters throughout the year 1985 to 1991. Ovulations only found left ovary whilst right permanently sub mature. Large vesicular follicles are July, with largest size (14 mm) end July. Developing corpora lutea mean diameters 13.5 mm early August. These findings suggest that ovulation...
In pelagic species inhabiting large oceans, genetic differentiation tends to be mild and populations devoid of structure. However, cetaceans have provided many examples structuring. Here we investigate whether the sperm whale, a with population sizes reputedly highly mobile, shows indication structuring in eastern North Atlantic, an ocean basin which single is believed occur. To do so, examined stable isotope values sequential growth layer groups teeth from individuals sampled Denmark NW...
The onset and timing of epiphyseal ankylosis in the vertebral column flippers hyoid sternal bones were studied 350 skeletons harbour porpoise (Phocoena phocoena) originating from Baltic North Sea held collections Zoological Museum (University Copenhagen), Natural History (Gothenburg), National (Stockholm), German Oceanographic (Stralsund). Epiphyseal started anterior cervical region then initiated around 23rd to 26th caudal vertebrae where it proceeded both directions. progression eventually...
This paper presents information on the stomach contents of four northern bottlenose whales Hyperoodon ampullatus (Odontoceti: Ziphiidae) from north-east Atlantic, an area for which there are few recent data feeding ecology this species. Two these were relatively strandings, a female stranded in August 1993 at Hargen (the Netherlands) and male February 1997 island Tåsinge (Denmark). Stomach content samples also examined juvenile November 1885 Dunbar (Scotland) 1956 Texel Netherlands). Food...
Abstract We measured metric and scored non-metric characters of 242 harbour porpoise (Phocoena phocoena) skulls from the North Baltic Sea subdivided them into three geographical areas: The German Bight, outer part or transition area (Skagerrak, Kattegat, Belt Seas, Øresund, Kiel Lübeck Fehmarn Sea), central (Arkona waters off eastern Swedish coast). A comparison skull by means ANOVA, Discriminant Analysis X2-tests revealed significant differences between porpoises all areas. results this...
We describe and review the subfossil whale bones (mammalian order Cetacea) material from southern Scandinavian area, that is, Skagerrak, Kattegat, inner Danish waters southwestern Baltic Sea. Fifteen species were identified records of which all, except for bowhead (Balaena mysticetus), have also been encountered in modern times. Fifty-one specimens radiocarbon dated covering 12 species. The dates fell three distinct clusters with a few before last glacial maximum (LGM), large group between...
Five white-beaked dolphins Lagenorhynchus albirostris with outwardly vertebral kyphosis, kyphoscoliosis or lordosis were identified during a photo-identification survey of over 400 individuals (2002-2013) in Faxaflói and Skjálfandi Bays, Iceland. In addition, 3 stranding reports from Denmark, The Netherlands the UK analysed, providing both external observation post mortem details axial deviations column this species. Two free-ranging cases 2 stranded specimens appeared to have an acquired...
Lagenorhynchus albirostris ( Gray, 1846a ) is a delphinid commonly called the white-beaked dolphin. A robustly built dolphin with black, white, and gray coloration, it has whitish beak, prominent dorsal fin, white saddle behind fin. Endemic to temperate subarctic North Atlantic, associated continental shelf habitats. The conservation status of L. poorly known. L . currently listed as "Least Concern" by International Union for Conservation Nature Natural Resources on Appendix II Convention...
The conservation and management of biological diversity rely heavily on clear definitions appropriate target units, such as populations, subspecies species. However, the nomenclature grey seal [Halichoerus grypus (Fabricius 1791)] has for many years been misled by two persistent assumptions; that there was no type specimen species locality lay in Greenland. Here, we describe a skull held collections Natural History Museum Denmark, present written morphological evidence to demonstrate this is...
We studied the etiology of encephalitis in a fin whale (Balaenoptera physalus) that stranded 2016 on coast Denmark. Dolphin morbillivirus (DMV) was detected brain and other organs. Phylogenetics showed close relation to DMV isolated from striped dolphin (Stenella coeruleoalba) Spain 2012.
Abstract Few studies have examined the natural complex pigmentation patterns of white‐beaked dolphins. From 2002 to 2014, whale‐watching trips in Iceland provided a platform opportunity collect large body photographs free‐ranging individuals from single area distribution for this species. Based on 823 images, 571 showing one or more color components were identified, and assigned following four age classes: adults ( n = 437), juveniles 109), calves 14), neonates 11). A total 26 observed...
An analysis of cephalopod beaks from the stomachs 10 sperm whales stranded in Denmark during 1991, 1997 and 2000 revealed Gonatus fabricii as dominant prey species (>98% 2536 identified lower beaks). Other found were: Todarodes sagittatus, Histioteuthis sp., Cyclioteuthis Haliphron atlanticus, Bathypolypus sp. The majority (73.5%, n = 2522) were individuals with an estimated mantle length between 192 257 mm, corresponding mature ontogenetically transformed immobilized females. results may...
A large number of mammalian species harbor a tandem repeat in exon III the gene encoding dopamine receptor D4 (DRD4), associated with cognitive functions. In this study, DRD4 from order Cetacea was identified and characterized. Included our study were samples 10 white-beaked dolphins (Lagenorhynchus albirostris), porpoises (Phocoena phocoena), eight sperm whales (Physeter macrocephalus), five minke (Balaenoptera acutorostrata). Using enzymatic amplification followed by sequencing amplified...