Thiamine deficiency impairs common eider (Somateria mollissima) reproduction in the field
| Autor: | Torsten Mörner, Roland Mattsson, Lennart Balk, Yolanda Ruiz Muñoz, Hanna Gustavsson, Anna-Lena Berg, Le Carlsson, Tomas Hansson |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
0301 basic medicine
Vitamin Baltic States media_common.quotation_subject Eggs Population Zoology lcsh:Medicine Article Predation Birds 03 medical and health sciences chemistry.chemical_compound 0302 clinical medicine Animals Thiamine education lcsh:Science Incubation Thiamine deficiency media_common education.field_of_study Multidisciplinary biology Reproduction lcsh:R Thiamine Deficiency food and beverages biology.organism_classification Eider 030104 developmental biology Ducks chemistry lcsh:Q human activities 030217 neurology & neurosurgery |
| Zdroj: | Scientific Reports, Vol 7, Iss 1, Pp 1-7 (2017) Scientific Reports |
| ISSN: | 2045-2322 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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