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Effects of hypoxia and elevated ammonia concentration on the viability of red snapper embryos and early larvae ArchiMer
Bardon-albaret, Agnes; Saillant, Eric.
The effects of hypoxic conditions and elevated ammonia concentrations on the viability of embryos and newly hatched larvae of the red snapper (Lutjanus campechanus) were investigated. In all experiments, tested levels of hypoxia or ammonia concentrations were applied to embryos and unfed newly hatched larvae from three different spawns. Exposures began at 1 h post fertilization (pf) and lasted until all individuals in a group had expired. Survival rates were monitored daily in duplicates for each spawn in each treatment. Fertilized eggs exposed to 2 mg L− 1 dissolved oxygen (29% saturation) showed complete mortality before hatch while 81% of embryos in control groups (> 85% saturation) hatched and subsequently maintained high survival until 5 days pf....
Tipo: Text Palavras-chave: Lutjanus campechanus; Hypoxia; Ammonia; Egg quality; Stress; Water quality.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00321/43188/42735.pdf
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Effects of local Polynesian plants and algae on growth and expression of two immune-related genes in orbicular batfish (Platax orbicularis) ArchiMer
Reverter, Miriam; Saulnier, Denis; David, Rarahu; Bardon-albaret, Agnes; Belliard, Corinne; Tapissier-bontemps, Nathalie; Lecchini, David; Sasal, Pierre.
The emerging orbicular batfish (Platax orbicularis) aquaculture is the most important fish aquaculture industry in French Polynesia. However, bacterial infections are causing severe mortality episodes. Therefore, there is an urgent need to find an effective management solution. Besides the supplying difficulty and high costs of veterinary drugs in French Polynesia, batfish aquaculture takes place close to the coral reef, where use of synthetic persistent drugs should be restricted. Medicinal plants and bioactive algae are emerging as a cheaper and more sustainable alternative to chemical drugs. We have studied the effect of local Polynesian plants and the local opportunistic algae Asparagopsis taxiformis on batfish when orally administered. Weight gain and...
Tipo: Text Palavras-chave: Orbicular batfish; Asparagopsis taxiformis; Immunostimulant; Lysozyme G; Transforming growth factor; Relative gene expression.
Ano: 2016 URL: http://archimer.ifremer.fr/doc/00350/46155/45853.pdf
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Study of the ontogeny of the orbicular batfish (Platax orbicularis) ArchiMer
Bardon-albaret, Agnes; Gasset, Eric; Teissier, Alexandre; Teiri, W; Maamaatuaiahutapu, M; David, R; Tayale, Alexandre; Belliard, Corinne; Levy, Peva; Basset, Caline; Sicard, Julien; Magre, Kevin; Herne, Antoine; Reverter, Myriam; Sasal, Pierre; Coves, Denis; Saulnier, Denis.
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Ano: 2015 URL: http://archimer.ifremer.fr/doc/00281/39246/37819.pdf
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