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Levels of Trace Elements in Liver From Norwegian Moose, Reindeer and Red Deer in Relation To Atmospheric Deposition

Luftfomrensuinger som mulige kilder til akkumulering av sporelementer hos norske hjortedyr.

Abstract

The levels of antimony, arsenic, cadmium, copper, lead, mercury, molybdenum, selenium and zinc were determined in liver of moose, reindeer and red deer from differen localities in Norway. Reindeer had considerably higher levels of mercury, lead and arsenic than moose and red deer. These findings are considered to be related to differences in feeding habits since reindeer on highland plateaus feed mainly on lichens which have been shown to accumulate trace elements. The levels of arsenic, and to some extent also selenium and cadmium, in moose and reindeer liver showed a north-south gradient closely related to the regional distribution of these elements in the forest moss. As regards lead, a north-south gradient and a relationship to moss levels, were found in moose liver only. It therefore seems that atmospheric deposition of the elements mercury, lead, arsenic, cadmium and selenium contribute to the body burden of these elements in cervides in Norway. There was no evidence of these elements accumulating to toxic levels.

Sammendrag

Lever av elg, rein og hjort fra 12 forskj eilige områder av landet er analysert for innhold av elementene antimon, arsen, bly, kadmium, kobber, kvikksølv, molybden, seien og sink. Rein hadde et betydelig høyere innhold av bly, kvikksølv og arsen enn de andre artene, noe som kan skyldes beiting på lav som er kjent for a kunne akkumulere sporelementer. Resultatene av analysene er videre sammenholdt med tidligere data for innhold av sporelementer i humus fra de samme områdene. Det ble funnet korrelasjon mellom nivåene av bly, arsen, seien, og i noen grad kadmium, i humus og elg- og reinlever. Et unntak er bly i reinlever, hvor beiteforholdene synes å ha større betydning enn forskjeller i nedfall. Det var tydelige nord-sør gradienter for disse elementene hos elg og rein. Både forskj eilen mellom rein og de andre artene og de påviste nord-sør gradientene tyder på at atmosfærisk nedfall er av betydning for akkumuleringen av elementene arsen, bly, kadmium, kvikksølv og seien hos norske hjortedyr. Det er i denne Undersøkelsen ikke påvist nivåer av de aktuelle elementer som kan ha toksikologisk betydning. Innholdet av kadmium i lever kan ha en viss nseringsmiddelhygienisk betydning

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Frøslie, A., Norheim, G., Rambæk, J.P. et al. Levels of Trace Elements in Liver From Norwegian Moose, Reindeer and Red Deer in Relation To Atmospheric Deposition. Acta Vet Scand 25, 333–345 (1984). https://doi.org/10.1186/BF03547248

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