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Registros recuperados: 7
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Effets de la salinité et de la température du milieu sur le degré de saturation des acides gras et sur les différentes catégories lipidiques des alevins de Mugil cephalus. OceanDocs
El Cafsi., M.; Kheriji., S.; Masmoudi., W.; Romdhane., M.S..
Le suivi de l’évolution des lipides des alevins de Mugil cephalus en fonction de la salinité et de la température du milieu, montre qu’après acclimatation à 14°C, le rapport acides gras polyinsaturés/acides gras saturés, chez les alevins acclimatés à la basse salinité (0,5‰) augmente de 6,5%. D’autre part, nous avons noté une diminution de 65% de la masse des triacylglycérols et une augmentation de 37% de celle des lipides polaires. Par ailleurs, nous avons relevé que l’abaissement de la température du milieu de 26 à 14°C, entraîne une augmentation plus importante du rapport acides gras polyinsaturés/acides gras saturés à 0,5‰ qu’à 35‰. La diminution de la température du milieu provoque une augmentation respective de 365 et de 53%, de la masse des...
Tipo: Journal Contribution Palavras-chave: Biochemical composition; Salinity; Lipids; Fry; Fatty acids; Temperature; Accumulation; Mugil cephalus; Http://aims.fao.org/aos/agrovoc/c_35403.
Ano: 2000 URL: http://hdl.handle.net/1834/4296
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Growth of Nile tilapia post-larvae from broodstock fed diet with different levels of digestible protein and digestible energy R. Bras. Zootec.
Sousa,Silia Maria de Negreiros; Freccia,André; Santos,Lilian Dena dos; Meurer,Fábio; Tessaro,Lucélia; Bombardelli,Robie Allan.
This study was carried out to evaluate the influence of different levels of digestible energy and digestible protein in diets of Nile tilapia (Oreochromis niloticus) broodstock on offspring growth during sex reversal stage. A total of 2,700 post-larvae (8.2±0.001 mg) derived from breeders fed nine diets with distinct levels of digestible protein (28, 34 and 40% DP) and digestible energy (2,800; 3,400; and 4,000 kcal DE.kg-1) were stored in twenty-seven 70 L tanks. After 30 days of growth, their average final weight (AFW, g), average weight gain (AWG, g), final standard length (SL, cm), condition factor (CF), specific growth rate (SGR, %/day), stock uniformity (UNI, %), survival (SUR, %) and sex reversal rate (SRR, %) were measured. Although female...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Fry; Nutrition; Oreochromis niloticus; Reproduction; Sex reversal.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000800001
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Nutrition of the seabass Lates calcarifer ArchiMer
Cuzon, Gerard; Chou, R; Fuchs, Jacques.
The Primary Production Department of Singapore (PPD) studies covered the weaning of seabass from fingerlings stage onwards and the dietary protein requirement of early grow-out fish. Dietary protein requirement of early grow-out seabass was demonstrated to be between 40-50%, at dietary lipid level of 12%, using fishmeal protein. Nevertheless fish growth was significantly higher with trashfish feed, but apparent protein retention was significantly better with formulated feed.
Tipo: Text Palavras-chave: Lates calcarifer; Fry; Nutritional requirements; Biochemistry; Food absorption; Growth rate; Fish meal; Seed (aquaculture); Dietary deficiencies; Fingerlings; Lipids; Proteins; Diets; Pellet feeds.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1425.pdf
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Selection of finfish species (seabass) as candidates for aquaculture in French Polynesia ArchiMer
Fuchs, Jacques; Gasset, Eric; Nedelec, Georges.
Species with a very high potential for aquaculture, allowing development projects on a short terms basis: the seabass originating from S.E. Asia. Species, potentially interesting but presenting some drawbacks, as difficulties to perform larval rearing or presenting pathological problem. Species considered as difficult to rear and not retained like Siganus argenteus , Siganidae or Caranx ignobilis , Carangidae. The future development of finfish in Polynesia is emphasized and a project of sea bass netcage culture in Polynesian lagoon is presented.
Tipo: Text Palavras-chave: Siganus argenteus; Oreochromis; Coryphaenidae; Epinephelus microdon; Serranidae; Lates calcarifer; Centropomidae; Pisces; Fry; Fish larvae; Lagoons; Cage culture; Pellet feeds; Sexual reproduction; Spawning; Growth.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/acte-1474.pdf
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The Fate of Coho Salmon Nomads: The Story of an Estuarine-Rearing Strategy Promoting Resilience Ecology and Society
Koski, K V.; The Nature Conservancy Alaska Field Office, Juneau, Alaska, USA; kkoski@tnc.org.
The downstream movement of coho salmon nomads (age 0), conventionally considered surplus fry, has been an accepted characteristic of juvenile coho salmon for the past 40 to 50 yr. The fate of these nomads, however, was not known and they were assumed to perish in the ocean. Several studies and observations have recently provided new insights into the fate of nomads and the role of the stream-estuary ecotone and estuary in developing this life history strategy that promotes coho resilience. Chinook and sockeye salmon have developed the ocean-type life-history strategy to exploit the higher productivity of the estuarine environment and migrate to the ocean at age 0. Nomad coho can acclimate to brackish water, and survive and grow well in the stream-estuary...
Tipo: Peer-Reviewed Insight Palavras-chave: Age 0; Alaska; Coho salmon; Estuaries; Fry; Life history strategy; Nomads; Resilience; Restoration; Smolts; Stream-estuary ecotone..
Ano: 2009
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Tri d'alevins de loup et de dorade au stade juvénile (0,2 - 12 g) ArchiMer
Lemarie, Gilles; Gasset, Eric.
The authors present the necessary to sort catfish and sea bream fries in order to limit cannibalism, to constitute homogeneous groups. In the same time they studied different sorters (bars sorter, grating sorter and the conception of an experimental sorter) and their effects on the juveniles (behaviour). Introduction: In hatchery, early sorting of Sea Bass or Sea Bream fry after weaning can become necessary for several reasons: a) To obtain homogeneous batches thus simplifying growing management by better controlling: - Specific water flow for precise ranges of size or weight, - Food distribution granularity, - Daily feeding rate. b) To limit cannibalism which can become high when population dispersion is spread out. This dispersion greatly increases...
Tipo: Text Palavras-chave: Pisces; Nursery ponds; Juvenile stage; Sea bream; Catfish; Fry; Pisces; Stade juvénile; Dorade; Loup; Alevin.
Ano: 1989 URL: http://archimer.ifremer.fr/doc/1989/rapport-1751.pdf
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Variation de l’accumulation du lindane chez les alevins de <Liza ramada> OceanDocs
Masmoudi, W.; Romdhane, M.S.; Kheriji, S.; El Cafsi, M..
Pendant la saison printanière de recrutement maximale (avril/mai2000) des alevins de Liza ramada , nous avons effectué 4 campagnes de pêche au niveau de l’embouchure de canal « Khélij ». Les alevins de cette espèce ainsi collectés ont été repartis en trois classes de taille (classe I :19,4  1,3 mm ; classe II : 45,5  5,3 mm et classe III : 63,2  6,3mm) dans le but d’y analyser les résidus du lindane (  HCH ), un pesticide organochloré. Nos résultats ont révélé des concentrations de ce résidu chutant de 57,42  12,49 à 12,67  3,27 ng/ g de graisse en passant de la classe I à la classe III. Cette diminution est probablement due à une amélioration avec l’âge des capacités métaboliques de l’espèce vis à vis du contaminant. D’un autre côté, Liza...
Tipo: Journal Contribution Palavras-chave: Alevins; Liza ramada; Lindane; Croissance; Bioaccumulation; Fry; Growth Bioaccumulation Fry Growth Lindane Pesticides Fry Bioaccumulation Growth Lindane Pesticides http://aims.fao.org/aos/agrovoc/c_11037 http://aims.fao.org/aos/agrovoc/c_32389 http://aims.fao.org/aos/agrovoc/c_3394 http://aims.fao.org/aos/agrovoc/c_31402 http://aims.fao.org/aos/agrovoc/c_5739.
Ano: 2001 URL: http://hdl.handle.net/1834/3706
Registros recuperados: 7
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