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| Title: | Spawning of Baltic herring in the Vistula Lagoon: in fyke-net eel fishery of the Vistula Lagoon |
| Authors: | Draganik, Bohdan
Psuty-Lipska, Iwona
Borowski, Władysław |
| ASFA Terms: | Techniques
Gear construction
Fishing gear |
| Issue Date: | 2004 |
| Publisher: | Sea Fisheries Institute in Gdynia |
| Citation: | Bulletin of the Sea Fisheries Institute, Gdynia, 3. p. 3-11 |
| Abstract: | Three species (eel, pike-perch and bream) support the Vistula Lagoon fishery. The
most prized of these is eel, which is fished with fyke-nets. The allowable minimum mesh-size
for the cod-end of the net is 16 mm (bar length). This mesh size does not permit young pikeperch
and bream to pass through. Depending on the place and way in which the fyke-nets are
anchored and the meshes in the cod-end stretched, a considerable number of young fish are
retained by the meshes. Their survival depends on many factors, the two most important of
which are the time that elapses between retention and release and how the fish are manipulated
by the fishermen prior to release. To prevent the premature fishing mortality of these
valuable fish, fishermen fit metal sieves into the fyke-net cod-ends that permit the young fish
to escape. This paper presents the results of studies on how well young pike-perch and bream
escape in relation to sieve hole diameter and fish size. The examined length frequency of pikeperch
and bream retained in fyke-nets covered with 6 mm mesh size netting provided the
materials for assessing the number of fish that entered the net and managed to escape from it
through the sieves. This paper presents the analysis of results obtained with three sieves of
various hole size (18×30, 22×36, 20×65 mm). |
| URI: | http://www.ceemar.org/dspace/handle/11099/562 |
| Related document: | http://www.mir.gdynia.pl/pliki/osrodek/biuletyn/biulet3-04.pdf |
| ISSN: | 1429-2335 |
| Appears in Collections: | Bulletin of the Sea Fisheries Institute
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