Impact of nine macroalgal diets on growth and initial reproductive investment in juvenile abalone Haliotis tuberculata

Type Article
Date 2019-11
Language English
Author(s) Roussel Sabine1, Caralp Claire1, 2, Leblanc Catherine3, 4, Le Grand Fabienne5, Stiger-Pouvreau Valerie1, Coulombet Céline2, Le Goïc Nelly1, Huchette Sylvain2
Affiliation(s) 1 : Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280 Plouzane, France
2 : France Haliotis, Kerazan Lilia, F-29880 Plouguerneau, France
3 : Sorbonne Universités, UPMC Univ Paris 06, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS 90074, F-29688 Roscoff, France
4 : CNRS, UMR 8227, Integrative Biology of Marine Models, Station Biologique de Roscoff, CS 90074, F-29688 Roscoff CEDEX, France
5 : Univ Brest, CNRS, IRD, Ifremer, LEMAR, F-29280 Plouzane, France
Source Aquaculture (0044-8486) (Elsevier BV), 2019-11 , Vol. 513 , P. 734385 (11p.)
DOI 10.1016/j.aquaculture.2019.734385
WOS© Times Cited 2
Keyword(s) Abalone, Algae, Reproduction, Growth, Protein
Abstract

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.

Full Text
File Pages Size Access
Author's final draft 40 940 KB Open access
11 899 KB Access on demand
Top of the page

How to cite 

Roussel Sabine, Caralp Claire, Leblanc Catherine, Le Grand Fabienne, Stiger-Pouvreau Valerie, Coulombet Céline, Le Goïc Nelly, Huchette Sylvain (2019). Impact of nine macroalgal diets on growth and initial reproductive investment in juvenile abalone Haliotis tuberculata. Aquaculture, 513, 734385 (11p.). Publisher's official version : https://doi.org/10.1016/j.aquaculture.2019.734385 , Open Access version : https://archimer.ifremer.fr/doc/00509/62066/