Tuula Hollmén
Current Organizations / Institutes
The organizations/institutes from the scholar's latest article
Research Subjects
Tuula Hollmén has a total of 7 co-authors. Here are the top co-authors by number of shared publications:
Martti Hario
2 shared publicationsSatu Sankari
2 shared publications- J. Christian Franson
US Geological Survey, National Wildlife Health Center, 6006 Schroeder Road, Madison, WI 53711, USA
1 shared publication Jukka T. Lehtonen
Department of Ecology and Systematics, Division of Population Biology, P.O. Box 17, 00014 University of Helsinki, Finland
1 shared publicationKai Lindström
1 shared publicationMikael Kilpi
1 shared publication
Latest Publications
- 1 May 2001
- Published by University of Chicago Press in Physiological and Biochemical Zoology
- Vol. 74 (3) , 333-342
Use of Serum Biochemistry to Evaluate Nutritional Status and Health of Incubating Common Eiders (Somateria mollissima) in Finland
During 1997-1999, we collected serum samples from 156 common eider (Somateria mollissima) females incubating eggs in the Finnish archipelago of the Baltic Sea. We used serum chemistry profiles to evaluate metabolic changes in eiders during incubation and to compare the health and nutritional status of birds nesting at a breeding area where the eider population has declined by over 50% during the past decade, with birds nesting at two areas with stable populations. Several changes in serum chemistries were observed during incubation, including (1) decreases in serum glucose, total protein, albumin, beta-globulin, and gamma-globulin concentrations and (2) increases in serum uric acid, creatine kinase, and beta-hydroxybutyrate concentrations. However, these changes were not consistent throughout the 3-yr period, suggesting differences among years in the rate of carbohydrate, lipid, and protein utilization during incubation. The mean serum concentrations of free fatty acids, glycerol, and albumin were lowest and the serum alpha- and gamma-globulin levels were highest in the area where the eider population has declined, suggesting a role for nutrition and diseases in the population dynamics of Baltic eiders.
- 1 May 2001
- Published by University of Chicago Press in Physiological and Biochemical Zoology
- Vol. 74 (3) , 333-342
Use of Serum Biochemistry to Evaluate Nutritional Status and Health of Incubating Common Eiders (Somateria mollissima) in Finland
During 1997-1999, we collected serum samples from 156 common eider (Somateria mollissima) females incubating eggs in the Finnish archipelago of the Baltic Sea. We used serum chemistry profiles to evaluate metabolic changes in eiders during incubation and to compare the health and nutritional status of birds nesting at a breeding area where the eider population has declined by over 50% during the past decade, with birds nesting at two areas with stable populations. Several changes in serum chemistries were observed during incubation, including (1) decreases in serum glucose, total protein, albumin, beta-globulin, and gamma-globulin concentrations and (2) increases in serum uric acid, creatine kinase, and beta-hydroxybutyrate concentrations. However, these changes were not consistent throughout the 3-yr period, suggesting differences among years in the rate of carbohydrate, lipid, and protein utilization during incubation. The mean serum concentrations of free fatty acids, glycerol, and albumin were lowest and the serum alpha- and gamma-globulin levels were highest in the area where the eider population has declined, suggesting a role for nutrition and diseases in the population dynamics of Baltic eiders.
- 1 July 1999
- Published by Wildlife Disease Association in Journal of Wildlife Diseases
- Vol. 35 (3) , 466-473
AN EXPERIMENTAL STUDY ON THE EFFECTS OF POLYMORPHIASIS IN COMMON EIDER DUCKLINGS
Eight common eider (Somateria mollissima) ducklings were experimentally infected from 1 lune through 13 June, 1995 with acanthocephalans (Polymorphus minutus) by allowing the birds to feed on Gammarus spp. (Gammarus oceanicus, G. salinus, G. zaddachi, and G. lacustris) containing acanthocephalan cystacanths. Uninfected Gammarus spp, were fed to a control group of seven ducklings. No mortality of ducklings occurred during the experiment. However, the infected ducklings gained weight more slowly than the control birds. After the 2 wk study period, the mean serum concentrations of total protein, albumin, beta-globulin, gamma-globulin, fructosamine and creatine kinase were lower in the infected group than in the controls. The mean (+/-SE) number of acanthocephalans in the intestine of the infected ducklings was 21 (+/-4). The parasites were attached to the mucosa of the posterior small intestine of the infected ducklings with a mixed inflammatory reaction consisting of heterophils and mononuclear lymphocytes surrounding the attachment sites.
- 1 July 1999
- Published by Wildlife Disease Association in Journal of Wildlife Diseases
- Vol. 35 (3) , 466-473
AN EXPERIMENTAL STUDY ON THE EFFECTS OF POLYMORPHIASIS IN COMMON EIDER DUCKLINGS
Eight common eider (Somateria mollissima) ducklings were experimentally infected from 1 lune through 13 June, 1995 with acanthocephalans (Polymorphus minutus) by allowing the birds to feed on Gammarus spp. (Gammarus oceanicus, G. salinus, G. zaddachi, and G. lacustris) containing acanthocephalan cystacanths. Uninfected Gammarus spp, were fed to a control group of seven ducklings. No mortality of ducklings occurred during the experiment. However, the infected ducklings gained weight more slowly than the control birds. After the 2 wk study period, the mean serum concentrations of total protein, albumin, beta-globulin, gamma-globulin, fructosamine and creatine kinase were lower in the infected group than in the controls. The mean (+/-SE) number of acanthocephalans in the intestine of the infected ducklings was 21 (+/-4). The parasites were attached to the mucosa of the posterior small intestine of the infected ducklings with a mixed inflammatory reaction consisting of heterophils and mononuclear lymphocytes surrounding the attachment sites.