Author

Peeter Hõrak

Observed names: Hõrak, Peeter, P Hõrak, P. HÕRAK, P. HÕrak, P. Hõrak, PEETER HORAK, PEETER HÕRAK, Peeter Horak, Peeter Hõrak, Peeter Hörak

Institution: University of Tartu

Observed institutions: Uppsala University, Estonian University of Life Sciences, University of Tartu

ORCID: 0000-0002-1442-9903

Observed ORCID: 0000-0002-1442-9903

OpenAlex ID: A5023511533

Haematological health state indices of reproducing Great Tits: methodology and sources of natural variation

1998 · I. Ots, A. MurumÄgi, et al. · Functional Ecology · 412

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Immune challenge affects basal metabolic activity in wintering great tits

2001 · Indrek Ots, Anvar B. Kerimov, et al. · Proceedings of the Royal Society B Biological Sciences · 252

How feather colour reflects its carotenoid content

2003 · Lauri Saks, Kevin McGraw, et al. · Functional Ecology · 212

Carotenoid-based plumage coloration reflects hemoparasite infection and local survival in breeding great tits

2001 · Peeter Hõrak, Indrek Ots, et al. · Oecologia · 205

Great titsParus majortrade health for reproduction

1996 · Indrek Ots, Peeter Hõrak · Proceedings of the Royal Society B Biological Sciences · 194

Immune function and survival of great tit nestlings in relation to growth conditions

1999 · P. Hõrak, L. Tegelmann, et al. · Oecologia · 188

Immune response is energetically costly in white cabbage butterfly pupae

2003 · Dalial Freitak, Indrek Ots, et al. · Proceedings of the Royal Society B Biological Sciences · 187

Carotenoid-based plumage coloration of male greenfinches reflects health and immunocompetence

2003 · Lauri Saks, Indrek Ots, et al. · Oecologia · 176

Haematological health state indices of reproducing Great Tits: a response to brood size manipulation

1998 · P. HÕrak, I. Ots, et al. · Functional Ecology · 171

Health impact of blood parasites in breeding great tits

1998 · Indrek Ots, Peeter Hõrak · Oecologia · 150

Do Dietary Antioxidants Alleviate the Cost of Immune Activation? An Experiment with Greenfinches

2007 · Peeter Hõrak, Lauri Saks, et al. · The American Naturalist · 136

How coccidian parasites affect health and appearance of greenfinches

2004 · PEETER HÕRAK, LAURI SAKS, et al. · Journal of Animal Ecology · 129

Antioxidant protection, carotenoids and the costs of immune challenge in greenfinches

2006 · Peeter Hõrak, Mihkel Zilmer, et al. · Journal of Experimental Biology · 114

How to measure oxidative stress in an ecological context: methodological and statistical issues

2010 · Peeter Hõrak, Alan Cohen · Functional Ecology · 109

Heterophil/lymphocyte ratios predict the magnitude of humoral immune response to a novel antigen in great tits (Parus major)

2012 · Indrikis Krams, Jolanta Vrublevska, et al. · Comparative Biochemistry and Physiology Part A Molecular & Integrative Physiology · 107

Repeatability of condition indices in captive greenfinches (Carduelis chloris)

2002 · Peeter Hõrak, Lauri Saks, et al. · Canadian Journal of Zoology · 103

Growth conditions affect carotenoid-based plumage coloration of great tit nestlings

2000 · P. Hõrak, Helen Vellau, et al. · Die Naturwissenschaften · 98

The ecological significance of antioxidants and oxidative stress: a marriage between mechanistic and functional perspectives

2010 · Kevin J. McGraw, Alan A. Cohen, et al. · Functional Ecology · 97

Oxidative stress and information content of black and yellow plumage coloration: an experiment with greenfinches

2010 · Peeter Hõrak, Elin Sild, et al. · Journal of Experimental Biology · 85

Demographic and evolutionary trends in ovarian function and aging

2018 · Triin Laisk, Olga Tšuiko, et al. · Human Reproduction Update · 79

Survival of adult Great Tits Parus major in relation to sex and habitat; a comparison of urban and rural populations

1998 · PEETER HORAK, JEAN‐DOMINIQUE LEBRETON · Ibis · 78

Assessment of oxidative stress in serum by d-ROMs test

2014 · K. Kilk, R. Meitern, et al. · Free Radical Research · 72

Health and reproduction: the sex-specific clinical profile of great tits (Parus major) in relation to breeding

1998 · P Hõrak, S Jenni-Eiermann, et al. · Canadian Journal of Zoology · 66

Hematological Condition Indexes in Greenfinches: Effects of Captivity and Diurnal Variation

2010 · Tuul Sepp, Elin Sild, et al. · Physiological and Biochemical Zoology · 60

Nitric oxide production: an easily measurable condition index for vertebrates

2009 · Elin Sild, Peeter Hõrak · Behavioral Ecology and Sociobiology · 58

Works count: 109

Citation count: 4,740

H-index: 34

I10-index: 65