Contacts Centre for Environmental Biology


PhD Student

CBA research group(s):

Evolutionary Genetics

Personal webpage

Team webpage

Helena Josefina Kjöllerström

Main Research Interests

My main research interests are: cytogenetics analysis, combined with the genetics of reproduction and fertility as well as Y-chromosome fertility markers in the horse.

I am mainly interested in the study of horses, namely the Sorraia breed from Portugal.


Academic Qualifications

2005 - Degree in Biology (University of Lisbon)

Recent Publications

Pinheiro M., Kjöllerström H.J. & Oom M.M. 2013. Genetic diversity and demographic structure of the endangered Sorraia horse breed assessed through pedigree analysis. Livestock Science 152(1):1-10.

Kjöllerström H.J., Collares-Pereira M.J. & Oom M.M. 2011. First evidence of sex chromosome mosaicism in the endangered Sorraia Horse breed. Livestock Science 136(2):273-276.

Oom M.M. Silva R., Kjöllerström H.J., Rampin M., Fernandes C., Pas A., Vercammen P., Marques Pereira N., Santos-Reis M. & Collares-Pereira M.J. 2010. Chromosome differentiation in the two non-African isolates of Genetta genetta. Book of abstracts of 19th International Colloquium on Animal Cytogenetics and Gene Mapping, 6-9 June, Kraków, Poland. Page 180.

Kjöllerström H.J., Collares-Pereira M.J. & Oom M.M. 2009. Is subfertility or infertility related to chromosome abnormalities in the Sorraia horse? Preliminary results. Book of Abstracts of the 60th Annual Meeting of the European Association for Animal Production, 24-27 August, Barcelona, Spain.15: 308.

Oom M.M., Kjöllerström H.J. & Pinheiro M. 2009. Evaluating breeding strategies in the Sorraia Horse endangered breed by pedigree data analysis. Book of Abstracts of the 60th Annual Meeting of the European Association for Animal Production, 24-27 August, Barcelona, Spain. 15: 124.

Kjöllerström H.J. & Oom M.M. 2008. Efeitos da consanguinidade na viabilidade e fertilidade do cavalo do Sorraia. Estado actual e proposta de conservação. VI Congresso Ibérico sobre Recursos Genéticos Animais. 4ª Reunião da Sociedade Portuguesa de Recursos Genéticos Animais. Lisboa, Portugal. (Oral Communication)

Kjöllerström H.J. 2005. The studbook as an instrument in the genetic and demographic analysis of endangered populations: the Sorraia breed case [in Portuguese] (O Studbook como instrumento na análise genética e demográfica de populações ameaçadas: o caso do cavalo do Sorraia.), no âmbito do Estágio Profissionalizante da Licenciatura em Biologia Aplicada aos Recursos Animais, Variante Terrestres - Pré-Bolonha.