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The status of pike‐perch culture in Finland
Author(s) -
Ruuhijärvi J.,
Hyvärinen P.
Publication year - 1996
Publication title -
journal of applied ichthyology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.392
H-Index - 62
eISSN - 1439-0426
pISSN - 0175-8659
DOI - 10.1111/j.1439-0426.1996.tb00087.x
Subject(s) - pike , perch , fishery , biology , hatchery , brood , hatching , nest (protein structural motif) , fish <actinopterygii> , zoology , ecology , biochemistry
Pike‐perch ( Stizostedion lucioperca (L.)) brood‐fish are captured from natural populations just before and during spawning time. One to three spawning pairs are put together with an artificial nest in a net‐cage. After spawning the eggs attached to the nest are transported to a hatchery 1 day before hatching begins. The production of newly hatched fry, 30 million in 1994, is used for fingerling production in ponds with natural food. The production of pike‐perch fingerlings in Finland increased rapidly in the 1980s and reached 10 million fish in 1994. The fingerlings are stocked into lakes particularly in central Finland, where many lakes lost their native pike‐perch populations in the 1960s. In some lakes pike‐perch fingerling stockings have been profitable and new populations have been established. Experiments on intensive rearing of newly‐hatched pike‐perch fry have not been successful. However, one‐summer‐old pond‐reared pike‐perch fingerlings are being reared intensively to provide captive brood fish.