Population dynamics of sealworm, Pseudoterranova decipiens sensu lato, in sculpins, Myoxocephalus scorpius, from two areas in Norway between 1990 and 1996

摘要: The abundance of sealworms (Pseudoterranova decipiens s.l.) in sculpins (Myoxocephalus scorpius) was studied at Torbjornskjaer, southeast Norway, and Vega, northern samples from 1990 to 1996. harbour seal (Phoca vitulina) population Torbjornskjaer declined by 70% during the phocine distemper virus epizootic 1988, has increased 1990s. relatively stable 1992 1996 any effect reduction number seals on been short-term. When correcting for size differences, young (2–4 years) had higher abundances than those while old (5–7 seemed similar stabilised. This happened a younger age among more heavily infected we interpret this as density dependence fish host.