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Jonas Malmsten – One of the best experts on this subject based on the ideXlab platform.

  • Vector-borne zoonotic pathogens in eurasian moose (Alces Alces Alces)
    Vector-Borne and Zoonotic Diseases, 2019
    Co-Authors: Jonas Malmsten, Anne-marie Dalin, Sara Moutailler, Elodie Devillers, Mathilde Gondard, Annika Felton
    Abstract:

    Climate change, with warmer temperatures and altered precipitation patterns, has affected the distribution of vectors and vector-borne diseases. In the northern hemisphere, vectors are spreading north, and with them, pathogens of zoonotic and animal health impact. Eurasian moose (Alces Alces Alces) are physiologically and anatomically adapted for cold climate, and are rarely considered ideal hosts of vectors, apart from deer keds (Lipoptena cervi). To investigate the presence of vector-borne pathogens, spleen samples from 615 moose were collected in southern Sweden from 2008 to 2015. The samples were analyzed with a high-throughput PCR method for 24 bacterial, and 12 parasitic pathogens. Anaplasma (82%), Borrelia (3%), Babesia (3%), and Bartonella (1%) DNA was found, showing that moose are exposed to, and can act as hosts of some of these pathogens, which can have an impact of both animal and human health. These results show that Swedish moose are exposed to pathogens that in some instances are more commonly found in regions with warmer climate, and highlights the importance of also considering moose as sentinels of vector-borne pathogens. Further research is needed to understand the effect of these pathogens on the health of individual moose and to elucidate whether climate change and moose population density interact to create the pattern observed.

  • Rate of Cooling in a Moose (Alces Alces) Carcass.
    Journal of wildlife diseases, 2018
    Co-Authors: Alina L Evans, Jonas Malmsten, Göran Ericsson, Boris Fuchs, Anne Randi Græsli, Wiebke Neumann, Fredrik Stenbacka, Navinder Singh, Jon M Arnemo
    Abstract:

    Postmortem body temperature is used to estimate time of death in humans, but the available models are not validated for most nonhuman species. Here, we report that cooling in an adult female moose (Alces Alces) equipped with a rumen temperature monitor was extremely slow, with a rumen temperature of 27–28 C as late as 40 h postmortem.

  • Reproductive characteristics in female Swedish moose (Alces Alces), with emphasis on puberty, timing of oestrus, and mating
    Acta veterinaria Scandinavica, 2014
    Co-Authors: Jonas Malmsten, Lisa Yon, Michael R. Hutchings, Carl-gustaf Thulin, Lennart Söderquist, Dolores Gavier Widén, Anne-marie Dalin
    Abstract:

    Background The moose (Alces Alces) is an intensively managed keystone species in Fennoscandia. Several aspects of reproduction in moose have not been fully elucidated, including puberty, timing of mating and oestrus, and the length of the oestrus period. These aspects are relevant for an adaptive management of moose with respect to harvest, population size, demography and environmental conditions. Therefore, an investigation of female moose reproduction was conducted during the moose-hunting period in southern Sweden from 2008 to 2011.

A. M. Dalin – One of the best experts on this subject based on the ideXlab platform.

Arne Skorping – One of the best experts on this subject based on the ideXlab platform.

Dalius Butkauskas – One of the best experts on this subject based on the ideXlab platform.

Bjorn Gjerde – One of the best experts on this subject based on the ideXlab platform.

  • the red fox vulpes vulpes and the arctic fox vulpes lagopus are definitive hosts of sarcocystis Alces and sarcocystis hjorti from moose Alces Alces
    Parasitology, 2010
    Co-Authors: Stina S Dahlgren, Bjorn Gjerde
    Abstract:

    The aim of this study was to determine whether foxes might act as definitive hosts of Sarcocystis Alces in moose. In 2 experiments, 6 silver foxes (Vulpes vulpes) and 6 blue foxes (Vulpes lagopus) were fed muscle tissue from moose containing numerous sarcocysts of S. Alces, and euthanazed 7-28 days post-infection (p.i.). Intestinal mucosal scrapings and faecal samples were screened microscopically for Sarcocystis oocysts/sporocysts, which were identified to species by means of species-specific primers and sequence analysis targeting the ssu rRNA gene. All foxes in both experiments became infected with Sarcocystis; the oocysts were fully sporulated by 14 days p.i., containing sporocysts measuring 14-15 x 10 microm. Molecular identification revealed that the oocysts/sporocysts belonged to 2 species, S. Alces and Sarcocystis hjorti, although sarcocysts of S. hjorti were only identified in moose subsequent to the infection of foxes. In the first experiment, all 8 foxes also became infected with a Hammondia sp. derived from moose, shedding unsporulated, subspherical oocysts, measuring 10-12 microm in diameter, from 6-7 days p.i. onwards. The study proved that canids (the red fox and arctic fox) are definitive hosts for S. Alces and S. hjorti, as had been inferred from the phylogenetic position of these species.