Consulta: subjectFacets:"Isochrysis galbana"
Registros recuperados: 5
Data/hora: 11/06/2024 10:20:15

Effects of twelve pesticides on larvae of oysters (Crassostrea gigas) and on two species of unicellular marine algae (Isochrysis galbana and Chaetoceros calcitrans)
Provedor de dados: 5
Autores: His, Edouard; Seaman, Matthias.
The effects of seven herbicides, four insecticides and one molluscicide were tested at concentrations of up to 10 mg/l on larvae of oysters, Crassostrea gigas (9 days exposure), and on laboratory cultures of the algae Isochrysis galbana and Chaeloceros calcilrans (21 days exposure). Ali of the pesticides tested had significant toxic effects on at least one of the test organisms. The strongest effects were those of lindane and isoproturon on survival and growth of C.gigas larvae, and of isoproturon and carbetamide on growth of Isochrysis and Chaeloceros cultures. The log-probit model for the relationship between dosage and effect, and Haber's rule for the relationship between duration of exposure and effect, hardly ever applied to our data. In sorne cases...
Tipo: Text
Palavras-chave: Oysters; Crassostrea gigas; Insecticides; Herbicides; Isochrysis galbana; Chaetoceros calcitrans.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/00018/12949/9922.pdf

Croissance et spectre de taille de trois algues en cultures non renouvelées, utilisées pour la nutrition de larves de bivalves en écloserie
Provedor de dados: 5
Autores: Robert, Rene; His, Edouard.
The different growth stages of three marine unicellular algae used in aquaculture, Isochrysis galbana, Chaetoceros calcitrans forma pumilum and tetraselmis suecica have been studied for 50 days under controlled culture conditions using a particle meter. At the same time, the size spectrum of the cells has been determined using a C 1000 scanner. The exponential growth stage is 11 days in the first two species, and 13 in the last one. Chaetoceros calcitrans forma pumilum is the smallest with an average size of 3.5 µm. Its cellular volume is constant. The average size of Isochrysis galbana is 4.5 µm. An increase of the cellular volume is observed through its stationary stage. The modal size of Tetraselmis suecica is 8 µm.  Again, an increase in the cellular...
Tipo: Text
Palavras-chave: Spectre de taille; Croissance; Tetraselmis suecica; Chaetoceros calcitrans forma pumilum; Isochrysis galbana; Algues unicellulaires.
Ano: 1986
URL: http://archimer.ifremer.fr/doc/1986/acte-6187.PDF

Impact of starvation and of feeding algal and artificial diets on the lipid content and composition of juvenile oysters &lt;i&gt;(Crassostrea gigas)&lt;/i&gt; and clams &lt;i&gt;(Tapes philippinarum)&lt;/i&gt;
Provedor de dados: 27
Autores: Caers, M.; Coutteau, P.; Sorgeloos, P.
The present study evaluated the effect of starvation and of feeding various algal and lipid-supplemented diets on the lipid content and lipid class distribution in the polar and neutral lipids of early juvenile oysters (&lt;i&gt;Crassostrea gigas&lt;/i&gt; and clams (&lt;i&gt;Tapes philippinarum&lt;/i&gt;). &lt;i&gt;T. philippinarum&lt;/i&gt; was starved, fed a mixed algal diet (&lt;i&gt;Tetraselmis suecica&lt;/i&gt; and &lt;i&gt;Isochrysis galbana&lt;/i&gt; (clone T-iso) or solely &lt;i&gt;T. suecica&lt;/i&gt; at three different feeding rations, either supplemented or not supplemented with lipid emulsions. &lt;i&gt;C. gigas&lt;/i&gt; was fed &lt;i&gt;T. suecica&lt;/i&gt; with and without the supplementation of lipid emulsions or liposomes. When...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Biochemical analysis; Feeding experiments; Juveniles; Lipids; Starvation; Crassostrea gigas [Portuguese oyster]; Isochrysis galbana.
Ano: 2000
URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=2679

Efeito do meio Erd Schreiber no cultivo das microalgas Dunaliella salina, Tetraselmis chuii e Isochrysis galbana - DOI: 10.4025/actascibiolsci.v28i2.1037
Provedor de dados: 3
Autores: Sebastien, Nyamien Yahaut; UNIOESTE - Toledo; Klein, Vera Lucia Mota; UFC.
As microalgas são utilizadas como fonte de alimento em aqüicultura. Neste trabalho cultivaram-se D. salina, T. chuii e I. galbana. O objetivo do trabalho consistiu em determinar o efeito do meio Erd Schreiber sobre o seu crescimento. Iniciou-se o cultivo com a mistura de 200 mg de Na2HPO4,7H2O, 100 mg de NaNO3 e 50 mL de extrato de solo. No monitoramento, manteve-se a temperatura entre 24 - 28oC, a salinidade a 34 ppt, à iluminação constante, a densidade celular com uma câmara de Neubauer e um microscópio binocular modelo ZEISS. Como resultado, I. galbana, D. salina e T. chuii atingiram 969 104 cel/mL, 457 x 104 cel/mL e 258,66 x 104 cel/mL, respectivamente, e os coeficientes angulares b foram 3,76 x 104 cel./mL/dia, 6,84 x 104 cel./mL/dia e 2,08 x 104...
Palavras-chave: 5.06.03.00-0    Aqüicultura cultivo; Microalgas; Dunaliella salina; Tetraselmis chuii; Isochrysis galbana; Erd Schreiber 5.06.03.00-0    Aqüicultura.
Ano: 2006
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/1037

CRECIMIENTO Y SUPERVIVENCIA DE LARVAS DE ARGOPECTEN NUCLEUS ALIMENTADAS CON DIFERENTES DIETAS MICROALGALES*
Provedor de dados: 50
Autores: Carreño Hernández,Yenia Katerine; Acosta Ortiz,Ernesto; Gómez-León,Javier.
Se estudió la influencia que ejerce la dieta sobre el desarrollo larvario del pectínido Argopecten nucleus, probando seis dietas microalgales compuestas por dietas monoalgales y mezcla de las especies Isochrysis galbana, Chaetoceros calcitrans y Tetraselmis suecica en relación 1:1, manejando una concentración por mL equivalente al peso de 40000 células de I. galbana, midiendo la respuesta a través de las variables supervivencia, crecimiento, aparición de la mancha ocular y estado de condición (larvas llenas, semillenas y vacías). Las dietas que contenían I. galbana presentaron los mayores valores en cada una de las variables medidas, en comparación con aquellas que carecían de esta. Particularmente, la dieta mixta I. galbana + C. calcitrans presentó...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Argopecten nucleus; Larvas; Microalgas; Isochrysis galbana; HUFA.
Ano: 2012
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0122-97612012000100006