FN Archimer Export Format
PT J
TI Impact of nine macroalgal diets on growth and initial reproductive investment in juvenile abalone Haliotis tuberculata
BT 
AF Roussel, Sabine
   Caralp, Claire
   Leblanc, Catherine
   LE GRAND, Fabienne
   Stiger-Pouvreau, Valerie
   Coulombet, Céline
   LE Goïc, Nelly
   Huchette, Sylvain
AS 1:1;2:1,2;3:3,4;4:5;5:1;6:2;7:1;8:2;
FF 1:;2:;3:;4:;5:;6:;7:;8:;
C1 Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280 Plouzane, France
   France Haliotis, Kerazan Lilia, F-29880 Plouguerneau, France
   Sorbonne Universités, UPMC Univ Paris 06, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS 90074, F-29688 Roscoff, France
   CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS 90074, F-29688 Roscoff CEDEX, France
   Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280 Plouzane, France
C2 UBO, FRANCE
   FRANCE HALIOTIS, FRANCE
   UNIV PARIS 06, FRANCE
   CNRS, FRANCE
   CNRS, FRANCE
UM LEMAR
IN WOS Cotutelle UMR
   copubli-france
   copubli-univ-france
IF 3.224
TC 9
UR https://archimer.ifremer.fr/doc/00509/62066/66246.pdf
LA English
DT Article
DE ;Abalone;Algae;Reproduction;Growth;Protein
AB The commercial culture of Haliotis tuberculata has recently started in Europe. As abalone is herbivorous, the use of local collected algae as feed may appear advantageous. The nutritional value of eight monospecific seaweed diets was studied using Palmaria palmata (Rhodophyta), filamentous algae, mainly Gracilaria sp. (Rhodophyta), Enteromorpha sp. and Ulva lactuca (Chlorophyta), together with Saccharina latissima, Saccorhiza polyschides, Laminaria digitata and Laminaria hyperborea (Ochrophyta, Phaeophyceae) and a mixed macroalgal diet. An integrative approach consisted in monitoring the seasonal composition changes of these algae in terms of protein, lipid, soluble carbohydrate, fatty acid and amino-acid contents, and to relate it to seasonal growth and reproduction investment during a large-scale experiment. Abalone and algae were studied for one year in commercial sea-cage structures. Abalone fed with monospecific diet using either P. palmata or S. latissima, and with mixed diet presented the best growth rate, muscle ratio and gonad development. Seasonal daily weight gain was mainly associated with n-3/n-6 ratio, soluble carbohydrate content and total protein content. In term of amino-acid contents, the daily weight gain was associated with free phenylalanine as well as isoleucine levels. Moreover, 90% of 2-years old abalone started gonad development but less than a quarter featured a fully matured gonad. The gonad development of H. tuberculata was mostly associated to total valine, methionine, leucine, arginine and isoleucine levels. The age of initial sexual maturity in H. tuberculata turned to be a highly plastic trait in response to different growth rates and algal diets. Even if P. palmata is the best option for growth performance, mixed diets should probably be preferred to a monospecific diet in order to avoid too high pressure on a single algal resource. 
PY 2019
PD NOV
SO Aquaculture
SN 0044-8486
PU Elsevier BV
VL 513
UT 000497647200006
DI 10.1016/j.aquaculture.2019.734385
ID 62066
ER

EF