Grabda J., 1976. The occurrence of anisakid nematode larvae in Baltic cod (Gadus morhua callarias L.) and the dynamics of their invasion. Acta Ichthyol. Piscat. 6 (1): 3-22.

Larvae of two nematode species: Anisakis simplex (Rud.) and Contracaecum aduncum (Rud.) were found to occur in Baltic cod (Gadus morhua callarias L.). Their occurrence in various fish organs was analysed; the investigations covered also the invasion incidence fish size relationship, the annual variability of infestation and its occurrence in different regions of the Southern Baltic.