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Preliminary investigations on husbandry, nutrition and growth of glass eels and elvers, Anguilla anguilla L.
Author(s) -
HEINSBROEK L. T. N.
Publication year - 1989
Publication title -
aquaculture research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.646
H-Index - 89
eISSN - 1365-2109
pISSN - 1355-557X
DOI - 10.1111/j.1365-2109.1989.tb00448.x
Subject(s) - biology , animal husbandry , stocking , cannibalism , zoology , fishery , population , growth rate , ecology , predation , agriculture , demography , geometry , mathematics , sociology
. Some effects of husbandry and feeding on growth of glass eels and elvers of the European eel. Anguilla anguilla L., were investigated. In the first 7 months after arrival the recorded mortality amounted to 34% of the initial population. due to escapes and possibly cannibalism the observed survival after 7 months was only 21% of the initial population. Mean growth rate of the whole population was 7.1 g day −1 kg −0.8 . Growth proved to be highly variable. Growth rate was clearly affected by feeding level but not by initial stocking density. Maximum growth rate was approximately 8g day, 1 kg −0.8 with feed conversions of 1.7–2.0. An optimal feeding level of 7.5g day 1 kg −0.8 resulted in feed conversions of 1.3–1.6.