Annual movement and migration of adult pikeperch in a lowland river

Authors


*Author to whom correspondence should be addressed. Tel.: +45 8921 3100; fax: +45 8921 3150; email: ak@dfu.min.dk

Abstract

The downstream migration of 46–66 cm radio-tagged adult pikeperch Stizostedion lucioperca, in the River Gudenaa, Denmark, from late September to late December, coincided with a reduction in the frequent occurrence of prey fish in the tagging area, and hence was interpreted as a feeding migration. The upstream migration from March to mid-April in spring took place prior to spawning which occurred from late April to June.

Ancillary