Demodex phocidi (Acariformes: Demodecidae) from Phoca vitulina (Carnivora: Phocidae) – the second observation in the world and a supplement to the species description

Joanna N. Izdebska, Leszek Rolbiecki, Karolina Cierocka, Iwona Pawliczka

Paper category: Original research paper
Corresponding author: Leszek Rolbiecki (
DOI: 10.1515/ohs-2020-0005
Received: 27/05/2019
Accepted: 26/07/2019
Full text: here

Citation (APA style): Izdebska, J., Rolbiecki, L., Cierocka, K., et al. (2020). Demodex phocidi (Acariformes: Demodecidae) from Phoca vitulina (Carnivora: Phocidae) – the second observation in the world and a supplement to the species description. Oceanological and Hydrobiological Studies, 49(1), pp. 49-55. Retrieved 10 Mar. 2020, from doi:10.1515/ohs-2020-0005


The present study describes a finding of the demodecid mite Demodex phocidi in the seal Phoca vitulina in the Baltic Sea. This is the first identification in Europe and the second in the world. This is also the first observation of the Demodecidae family in the pinnipeds outside North America. A high density of demodecid mites was observed in the skin of the examined seal, but no symptoms of parasitosis were observed. Our findings also supplement the taxonomic description and morphometry of D. phocidi.


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