|
|
|
| Registros recuperados: 12 | |
|
|
| Gatesoupe, Joel; Coves, Denis; Ortega, Aurelio; Papandroulakis, Nikos; Vadstein, Olav; De La Gandara, Fernando. |
| During the first 2 years of larval rearing trials with Atlantic bluefin tuna, survival was a challenging issue. As bacterial colonization of the gut has been shown to play a key role for other species, we studied the profiles of the microbiota associated with individual larvae at different stages in three distant hatcheries. The Bacterial Community Profile (BCP) was quantified based on PCR-DGGE analyses of partial amplicons from 16S rDNA. Considerable individual variability in BCP was observed before onset of feeding, and the BCP did not show regular fluctuation during ontogenesis. Microalgae were added to the rearing tanks in two of the three hatcheries, but it was not possible to distinguish the effect of location from the effect of algal addition on... |
| Tipo: Text |
Palavras-chave: Larval rearing; Bacterial diversity; DGGE; Thunnus thynnus. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00075/18648/16197.pdf |
| |
|
|
| Jorge Eduardo, Chávez Villalba. |
| In France, 90% of the annual cup oyster (Crassostrea gigas) production comes from larvae caught in the Arcachon and Marennes-Oléron basins. However, the spat catch shows many interannual irregularities and oyster farmers increasingly say they need spat outside of the reproductive period. Thus, the role of hatcheries in Japanese oyster spat production in France is becoming increasingly evident. However, the current state of knowledge about cup oyster reproduction in controlled conditions is limited, and hatchery professionals must confront various problems to optimise treatment of genitors so as to obtain larval breeds in good health and a lengthening of the reproductive season. To respond to this, we have carried out a study on three aspects that seem... |
| Tipo: Text |
Palavras-chave: Water temperature; Biochemical studies; Gametogenesis; Breeder conditioning; Larval rearing. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/these-1456.pdf |
| |
|
| |
|
|
| Sy,Victoria E.; Campos,Raúl E.. |
| One important step for the colonization of Ochlerotatus albifasciatus (Macquart) is to determine the optimal conditions for larval rearing, which makes possible the development of experiments comprising larval rearing in the laboratory. In this research the effect of diet composition on the development of O.albifasciatus was studied. For this purpose, cohorts of 20 first instars were reared using five diets: 1:1 mix of yeast and TetraMin®, 1:1 mix of fine and coarse organic matter, grass cuts soaked in water for 1h or 24h before larvae incorporation, and 1:1:1 mix of grass cuts, fine organic matter and coarse organic matter. Survival was recorded for each cohort, while development time from first instar to pupa, and adult wing length were recorded for each... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Survival; Development time; Wing length; Food; Larval rearing. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2008000600016 |
| |
|
| |
|
|
| Hui, Belinda; Vonau, Vincent; Moriceau, Jacques; Tetumu, Roger; Vanaa, Vincent; Demoy-schneider, Marina; Suquet, Marc; Le Moullac, Gilles. |
| Cryopreservation is a valuable tool for genetic improvement programs. Several bivalve mollusc species have already been the subject of such programs and the Tahitian black pearl oyster industry is now planning the development of selective breeding for desirable traits in Pinctada margaritifera. The ability to cryopreserve spermatozoa would, therefore, offer significant benefits to the cultured black pearl industry. Spermatozoa were cryopreserved with CPA 0.7 M trehalose in 0.8 M Me2SO and a two-step freezing process was used: straws were first maintained in nitrogen vapour for 10 minutes, then directly plunged into liquid nitrogen and stored for one week before use. The viability of thawed sperm was 23 % lower than that of fresh sperm. When using thawed... |
| Tipo: Text |
Palavras-chave: Cryopreservation; Spermatozoa; Fertility; Larval rearing; Pearl oyster; Pinctada margaritifera. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00040/15098/12446.pdf |
| |
|
|
| Waqalevu, Viliame; Besson, Marc; Gache, Camille; Roux, Natacha; Fogg, Lily; Bertucci, Frédéric; Metian, Marc; Lafille, Marc-andre; Maamaatuaiahutapu, Moana; Gasset, Eric; Saulnier, Denis; Laudet, Vincent; Lecchini, David. |
| Advancement and diversification of the aquaculture industry is reliant on the development of captive breeding and rearing protocols for novel fish species. Orbicular batfish (Platax orbicularis), a major emerging species in Polynesian aquaculture, live in brackish and marine waters around coral reefs, and are highly prized by Pacific Island communities for their high-quality meat. The present study describes the larval growth of P. orbicularis from hatching until 16 days after hatching (DAH) using meristics and thyroid hormone (T3) quantification. Our study highlighted that metamorphosis of P. orbicularis is critical to their production in aquaculture, as found for other species. Levels of the thyroid hormone T3 in P. orbicularis reached a peak at 12 DAH... |
| Tipo: Text |
Palavras-chave: Larval rearing; Mariculture; Metamorphosis; South pacific countries; Coral reefs. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00656/76816/77989.pdf |
| |
|
| |
|
|
| Suquet, Marc; Malo, Florent; Gourtay, Clemence; Ratiskol, Dominique; Riobe, Marion; Le Grand, Jacqueline; Queau, Isabelle; Mingant, Christian. |
| A basic cryopreservation protocol for great scallop sperm was recently published, with which thawed sperm survival remained limited to 25% of control values (Suquet et al. 2014). We designed here a set of five experiments to test ways of improving thawed sperm survival and storage by studying the effects of (1) cryoprotectant concentration; (2) sugar incorporation in the extender; (3) egg yolk addition to the extender; (4) sperm dilution rate; and (5) storage capacity of thawed sperm at 4 degrees C. A sixth experiment was then performed to compare rearing performances of larvae produced using thawed sperm from the optimal protocol defined in the present study with those produced using fresh sperm. During the first experiment, a significantly higher... |
| Tipo: Text |
Palavras-chave: Pecten maximus; Mollusc; Sperm; Cryopreservation; Larval rearing. |
| Ano: 2016 |
URL: https://archimer.ifremer.fr/doc/00359/47033/46946.pdf |
| |
|
|
| Soletchnik, Patrick; Thouard, Emmanuel; Goyard, Emmanuel; Baisnee, D; Yvon, C; Baker, P. |
| Two batches of red drum larvae were air shipped from hatcheries in the U.S.A. and stocked in two intensive tank experiments at densities oc 7 :.nd 2-3 larvae per liter. Food items include live rotifers, copepods, brine shrimps. squid and commercial fish pellets. Growth rates were similar in both experiments up to day 20 (12-1" mm) but differences in feeding schedules and an infestation by the dinoflagelate Amyloodinium sp. affected the growth from day 20 to 43 in the second trial. Significant mortalities occurred in the tanks during the first feeding period (days 2 to 7) and again from days 17 to 20 as the result of cannibalism. Survival between day 2 and day 44 was 44% in the first trial. Abnormal inflation of the swim bladder and infection with... |
| Tipo: Text |
Palavras-chave: French West Indies; Martinique; Sciaenops ocellatus; Larval rearing. |
| Ano: 1988 |
URL: https://archimer.ifremer.fr/doc/1998/rapport-1914.pdf |
| |
|
| |
| Registros recuperados: 12 | |
|
|
|
