WHAT IS THE PROPORTION OF ARCTIC CHAR, SA LVELINUS-ALPINUS (L), COMING FROM NATURAL SPAWNING OR FROM STOCKING IN LAKE GENEVA

Authors
RUBIN JF BUTTIKER B
Citation
Jf. Rubin et B. Buttiker, WHAT IS THE PROPORTION OF ARCTIC CHAR, SA LVELINUS-ALPINUS (L), COMING FROM NATURAL SPAWNING OR FROM STOCKING IN LAKE GENEVA, Bulletin francais de la peche et de la pisciculture, (329), 1993, pp. 221-229
Citations number
NO
Categorie Soggetti
Fisheries
Journal title
Bulletin francais de la peche et de la pisciculture → ACNP
ISSN journal
07672861
Issue
329
Year of publication
1993
Pages
221 - 229
Database
ISI
SICI code
0767-2861(1993):329<221:WITPOA>2.0.ZU;2-0
Abstract
The proportion of Arctic char, Salvelinus alpinus (L.), coming from na tural spawning or from stocking has been estimated for the 1984 and 19 85 cohorts by marking the fingerlings reared in hatchery and released in Lake Geneva. In 1984, the proportion of the fingerlings coming from natural spawning present in the Swiss waters of the Lake when the mar ked fish were released, is situated between 8.3 and 24.8 %. Between 19 .1 and 34.9 % for 1985. Thus stocking of fingerlings appears very effi cient. A study of the main spawning grounds of the char in Lake Geneva and an analysis of the fishing statistics also show this efficiency.