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Performance of GPS units for deployment on semiaquatic animals

Justicia, Martin Mayer. Funding acquisition: Frank Rosell. Methodology: Lia Schlippe Justicia, Martin Mayer. Writing – original draft: Lia Schlippe Justicia. Writing – review & editing: Frank Rosell

Age-related changes in somatic condition and reproduction in the Eurasian beaver: Resource history influences onset of reproductive senescence

., also supporting CN. Author Contributions Conceptualization: Ruairidh D. Campbell. Data curation: Ruairidh D. Campbell, Frank Rosell. Formal analysis: Ruairidh D. Campbell. Funding acquisition: Frank ... Rosell, David W. Macdonald. Investigation: Ruairidh D. Campbell. Methodology: Ruairidh D. Campbell, Frank Rosell. Project administration: Frank Rosell. Resources: Frank Rosell. Supervision: Frank

Socio-ecological features other than sex affect habitat selection in the socially obligate monogamous Eurasian beaver

Habitat selection is a context-dependent mechanism, in which both the internal state as well as external factors affect the behavior and decisions of an individual. This is well known for polygamous mammals, which are typically sexually dimorphic, and often express great variability in behavior and habitat selection between individuals as well between the sexes. Among monogamous...

The Use of Acceleration to Code for Animal Behaviours; A Case Study in Free-Ranging Eurasian Beavers Castor fiber

Recent technological innovations have led to the development of miniature, accelerometer-containing electronic loggers which can be attached to free-living animals. Accelerometers provide information on both body posture and dynamism which can be used as descriptors to define behaviour. We deployed tri-axial accelerometer loggers on 12 free-ranging Eurasian beavers Castor fiber...

Haematology and Serum Biochemistry Parameters and Variations in the Eurasian Beaver (Castor fiber)

Haematology parameters (N = 24) and serum biochemistry parameters (N = 35) were determined for wild Eurasian beavers (Castor fiber), between 6 months – 12 years old. Of the population tested in this study, N = 18 Eurasian beavers were from Norway and N = 17 originating from Bavaria but now living extensively in a reserve in England. All blood samples were collected from beavers...

Echinococcus multilocularis Detection in Live Eurasian Beavers (Castor fiber) Using a Combination of Laparoscopy and Abdominal Ultrasound under Field Conditions

Echinococcus multilocularis is an important pathogenic zoonotic parasite of health concern, though absent in the United Kingdom. Eurasian beavers (Castor fiber) may act as a rare intermediate host, and so unscreened wild caught individuals may pose a potential risk of introducing this parasite to disease-free countries through translocation programs. There is currently no single...

Will Trespassers Be Prosecuted or Assessed According to Their Merits? A Consilient Interpretation of Territoriality in a Group-Living Carnivore, the European Badger (Meles meles)

Socio-spatial interactions of Carnivores have traditionally been described using the vocabulary of territoriality and aggression, with scent marks interpreted as ‘scent fences’. Here, we investigate the role of olfactory signals in assumed territorial marking of group-living solitary foragers using European badgers Meles meles as a model. We presented anal gland secretions (n...

A Hypothetico-Deductive Approach to Assessing the Social Function of Chemical Signalling in a Non-Territorial Solitary Carnivore

The function of chemical signalling in non-territorial solitary carnivores is still relatively unclear. Studies on territorial solitary and social carnivores have highlighted odour capability and utility, however the social function of chemical signalling in wild carnivore populations operating dominance hierarchy social systems has received little attention. We monitored scent...

Potential risks of olfactory signaling: the effect of predators on scent marking by beavers

Mammals scent mark their territories to advertise occupancy and ownership. However, signaling with scent for territorial defense can have a negative effect by advertising an individual's presence and location to predators. In this study, we measured responses to a simulated territorial intrusion by conspecific adult male Eurasian beavers (Castor fiber) either in the localized...

Harvesting of males delays female breeding in a socially monogamous mammal; the beaver

Howard Parker Frank Rosell Atle Mysterud () 0 Centre for Ecological and Evolutionary Synthesis (CEES), Department of Biology, University of Oslo , PO Box 1066 Blindern, 0316 Oslo , Norway 1 Faculty