| 1. |
- Aguirre, A. Alonso, et al.
(författare)
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Field anesthesia of wild arctic fox (Alopex lagopus) cubs in the Swedish lapland using medetomidine-ketamine-atipamezole
- 2000
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Ingår i: Journal of zoo and wildlife medicine. - 1042-7260 .- 1937-2825. ; 31:2, s. 244-246
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Tidskriftsartikel (refereegranskat)abstract
- A safe and effective anesthetic regime for use in arctic fox (Alopex lagopus) cubs was developed. During July 1996, six free-ranging 6-8-wk-old cubs were captured near their den in Vindelfjallen Nature Reserve, Sweden. Medetomidine and ketamine HCl, followed by atipamezole, were selected for the anesthetic trial because of the well-documented safety and efficacy of this drug combination in a broad range of species. The dosage regimen used was 50 mu g/kg medetomidine combined with 2.5 mg/kg ketamine followed by reversal with 250 mu g/kg atipamezole. induction was rapid, with a mean induction time of 1 min and 32 sec (range: 58-150 sec). The cubs were anesthetized for a mean time of 18 +/- 5 min (range: 13-25 min). Serially recorded heart rate, respiratory rate, temperature, and pulse oximetry were stable throughout the anesthetic period for all cubs. Anesthetic depth was suitable for safe handling and minor clinical procedures, including venipuncture. Following atipamezole, all cubs were standing within 12 +/- 7 min (range: 5-24 min) and fully recovered at 27 +/- 5 min (range: 19-36 min). This information will be useful for future captive breeding and management programs involving the endangered arctic fox.
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| 2. |
- Balk, Lennart, et al.
(författare)
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Wild birds of declining European species are dying from a thiamine deficiency syndrome.
- 2009
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Ingår i: Proceedings of the National Academy of Sciences of the United States of America. - : Proceedings of the National Academy of Sciences. - 0027-8424 .- 1091-6490. ; 106:29, s. 12001-12006
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Tidskriftsartikel (refereegranskat)abstract
- Wild birds of several species are dying in large numbers from an idiopathic paralytic disease in the Baltic Sea area. Here, we demonstrate strong relationships between this disease, breeding failure, and thiamine (vitamin B(1)) deficiency in eggs, pulli, and full-grown individuals. Thiamine is essential for vertebrates, and its diphosphorylated form functions as a cofactor for several life sustaining enzymes, whereas the triphosphorylated form is necessary for the functioning of neuronal membranes. Paralyzed individuals were remedied by thiamine treatment. Moreover, thiamine deficiency and detrimental effects on thiamine-dependent enzymes were demonstrated in the yolk, liver, and brain. We propose that the mortality and breeding failure are part of a thiamine deficiency syndrome, which may have contributed significantly to declines in many bird populations during the last decades.
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| 3. |
- Bergström, Roger, et al.
(författare)
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Utbildning och forskning
- 2016
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Ingår i: <em>Jaktens historia i Sverige: Vilt – människa – samhälle – kultur</em>. - Stockholm : Liber Hermods. - 9789147112944 ; , s. 291-300
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 4. |
- Bignert, Anders, et al.
(författare)
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Time trends of metals in organs of moose (Alces alces) from Sweden, 1980-2000
- 2002
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The long-term monitoring of persistent and bio-accumulating chemicals in the Swedishenvironment is part of the Swedish National Environmental Monitoring Programme. It is based on chemical analyses of tissues and organs from species collected in selected referenceareas of the Swedish mainland, lakes and coastal areas (Odsjö & Olsson 1979a,b, Bernes1985). As part of the terrestrial contaminant monitoring programme, specimens of muscle,liver and kidney of moose (Alces alces) have been collected since 1980 from Grimsö, areference area in the monitoring programme and a coherent hunting district in the Örebrocounty (T) in south-central Sweden. In 1996, the monitoring was extended by collection andchemical analysis of organs of moose from six further counties and districts in Sweden. Thesedistricts are situated in the Norrbotten county (BD), Jämtland county (Z), Västmanland county(U), Älvsborg county (P), Jönköping county (F) and Kronoberg county (G) (Figure 1).Moose, with a diet dominated by twigs and leaves of trees and shrubs (Cederlund et al. 1980),was chosen in the monitoring programme as a representative of biota in the Swedish forestareas. Since the moose is distributed almost all over the country, it was considered as an idealmaterial also for studies of spatial distribution of environmental pollution and bio-accumulation,which is the reason for the extended collection of samples in 1996 onwards.This report presents levels and time trends of Ca, Cd, Co, Cr, Cu, Fe, Mg, Mn, Mo, Ni, Pb, Vand Zn in liver and kidney and Hg and Se in liver and muscle from the period 1996-2000. For Grimsö data from an extended period, 1980-2000 is presented.
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| 5. |
- Jansson, Desiree S., et al.
(författare)
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Post mortem findings and their relation to AA amyloidosis in free-ranging Herring gulls (Larus argentatus)
- 2018
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Ingår i: PLOS ONE. - : PUBLIC LIBRARY SCIENCE. - 1932-6203. ; 13:3
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Tidskriftsartikel (refereegranskat)abstract
- Since the late 1990s, high mortality and declining populations have been reported among sea birds including Herring gulls ( Larus argentatus) from the Baltic Sea area in Northern Europe. Repeated BoNT type C/D botulism outbreaks have occurred, but it remains unclear whether this is the sole and primary cause of mortality. Thiamine deficiency has also been suggested as a causal or contributing factor. With this study, we aimed to investigate gross and microscopic pathology in Herring gulls from affected breeding sites in Sweden in search of contributing diseases. Herring gulls from Iceland served as controls. Necropsies and histopathology were performed on 75 birds, of which 12 showed signs of disease at the time of necropsy. Parasites of various classes and tissues were commonly observed independent of host age, e.g. oesophageal capillariosis and nematode infection in the proventriculus and gizzard with severe inflammation, air sac larid pentastomes and bursal trematodiasis in pre-fledglings. Gross and microscopic findings are described. Notably, amyloidosis was diagnosed in 93 and 33% of the adult birds from Sweden and Iceland, respectively ( p<0.001), with more pronounced deposits in Swedish birds ( p<0.001). Gastrointestinal deposits were observed in the walls of arteries or arterioles, and occasionally in villi near the mucosal surface. Amyloid was identified within the intestinal lumen in one severely affected gull suggesting the possibility of oral seeding and the existence of a primed state as previously described in some mammals and chickens. This could speculatively explain the high occurrence and previously reported rapid onset of amyloidosis upon inflammation or captivity in Herring gulls. Amyloid-induced malabsorbtion is also a possibility. The Herring gull SAA/AA protein sequence was shown to be highly conserved but differed at the N-terminus from other avian species.
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| 6. |
- Lundberg, Per, et al.
(författare)
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Viltpopulationer och deras dynamik
- 2010
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Ingår i: Vilt, människa, samhälle. - Stockholm : Liber. - 9789147094189 ; , s. 53-79
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Bokkapitel (populärvet., debatt m.m.)
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| 7. |
- Lundberg, Per, et al.
(författare)
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Viltpopulationer och deras dynamik
- 2010
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Ingår i: Vilt, människa, samhälle. - Stockholm : Liber. - 9789147094189 ; , s. 53-79
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Bokkapitel (övrigt vetenskapligt/konstnärligt)
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| 8. |
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| 9. |
- Mörner, Torsten, et al.
(författare)
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Thiamine deficiency impairs common eider (Somateria mollissima) reproduction in the field
- 2017
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Ingår i: Scientific Reports. - : Springer Science and Business Media LLC. - 2045-2322. ; 7
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Tidskriftsartikel (refereegranskat)abstract
- The Baltic Sea population of the common eider (Somateria mollissima) has declined dramatically during the last two decades. Recently, widespread episodic thiamine (vitamin B1) deficiency has been demonstrated in feral birds and suggested to contribute significantly to declining populations. Here we show that the decline of the common eider population in the Baltic Sea is paralleled by high mortality of the pulli a few days after hatch, owing to thiamine deficiency and probably also thereby associated abnormal behaviour resulting in high gull predation. An experiment with artificially incubated common eider eggs collected in the field revealed that thiamine treatment of pulli had a therapeutic effect on the thiamine status of the brain and prevented death. The mortality was 53% in untreated specimens, whereas it was only 7% in thiamine treated specimens. Inability to dive was also linked to brain damage typical for thiamine deficiency. Our results demonstrate how thiamine deficiency causes a range of symptoms in the common eider pulli, as well as massive die-offs a few days after hatch, which probably are the major explanation of the recent dramatic population declines.
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| 10. |
- Odsjö, Tjelvar, et al.
(författare)
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Time trends of metals in liver, kidney and muscle of moose (Alces alces) from Sweden, 1980-2005
- 2007
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Rapport (övrigt vetenskapligt/konstnärligt)abstract
- The long-term monitoring of persistent and bio-accumulating chemicals in the Swedish environment is part of the Swedish National Environmental Monitoring Programme. It is based on chemical analyses of tissues and organs from species collected in selected reference areas of the Swedish mainland, lakes and coastal areas (Odsjö & Olsson 1979a,b, Bernes 1985). As part of the terrestrial contaminant monitoring programme, specimens of muscle, liver and kidney of moose (Alces alces) have been collected since 1980 from Grimsö, a reference area in the monitoring programme and a coherent hunting district in the Örebro county (T) in south-central Sweden. In 1996, the monitoring was extended by collection and chemical analysis of organs of moose from six further counties and districts in Sweden. These districts are situated in the Norrbotten county (BD), Jämtland county (Z), Västmanland county (U), Älvsborg county (P), Jönköping county (F) and Kronoberg county (G) (Figure 1). Moose, with a diet dominated by twigs and leaves of trees and shrubs (Cederlund et al. 1980), was chosen in the monitoring programme as a representative of biota in the Swedish forest areas. Since the moose is distributed almost all over the country, it was considered as an ideal material also for studies of spatial distribution of environmental pollution and bioaccumulation, which is the reason for the extended collection of samples in 1996 onwards. This report presents levels and time trends of Ca, Cd, Co, Cr, Cu, Fe, Mg, Mn, Mo, Ni, Pb, V and Zn in liver and kidney and Se and Hg in liver and muscle from the period 1996-2004. For Grimsö data from an extended period, 1980-2005 is presented.
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| 11. |
- Tham, Wilhelm, 1951-, et al.
(författare)
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Listeria monocytogenes subtypes associated with mortality among fallow deer (Dama dama)
- 1999
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Ingår i: Journal of zoo and wildlife medicine. - 1042-7260 .- 1937-2825. ; 30:4, s. 545-549
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Tidskriftsartikel (refereegranskat)abstract
- Different subtypes of Listeria monocytogenes were isolated from various animal and environmental samples during an episode of increased mortality on a fallow deer (Dama dama) farm. During a 4-wk period, six fallow deer died, including four does, one fawn, and one adult buck. Prior to death, one of the does had exhibited central nervous system signs characteristic of listeriosis. Postmortem examination of the six deer showed no histologic changes typical of listeriosis, although inflammatory changes were present in several organs. Different subtypes of L. monocytogenes were isolated from brain samples from six deer, from fodder and soil from the deer feeding area, and from faces of some healthy animals on the farm. Listeria monocytogenes, which was frequently isolated in the environment of the farm, was considered the probable major cause of mortality in these fallow deer.
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