GROWTH OF POSTMETAMORPHIC AND JUVENILE CONCHOLEPAS CONCHOLEPAS (BRUGUIERE) IN THE LABORATORY. EFFECT OF DENSITY, DIET AND TEMPERATURE
DOI:
https://doi.org/10.21703/0067-8767.1992.21.2557Keywords:
Metabolic rafe, ingestión rate, growth rale, growth efficieticy, survival, laboratory management.Abstract
The effects of density, volume of the container, diet and temperature on the growth of juvenile and postmetamorphic
individuáis of Concholepas concholepas under laboratory conditions were studied. The effect of density was studied on 80
individuáis of 6 to 12 mm of peristomal length, kept between may and august 1990, at three different densities (0.005; 0.010
and 0.020 individuáis cm2). The volume effect was studied on 20 juveniles between 5.0 and 5.8 mm of peristomal length, kept
between april and july 1991, in containers of different size (0.3 to 2.01). The diet effect was investigated on 35 individuáis of
C. concholepas between 6 and 12 mm of peristomal length fed on 3 monospecific and 4 mixed diets made out off three prey
species (Semimytilus algosus, Perumytilus purpuratus and Balanus laevis). The effects of temperature on both growth and
energetic balance were investigated on three groups of postmetamorphic individuáis. The firts one was obtained by natural
metamorphosis, the second one by induced metamorphosis and the last one was recolected from the intertidal zone.
