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| Registros recuperados: 11 | |
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| Mazurais, David; Ernande, Bruno; Quazuguel, Patrick; Severe, Armelle; Huelvan, Christine; Madec, Lauriane; Mouchel, Olivier; Soudant, P.; Robbens, J.; Huvet, Arnaud; Zambonino-infante, J.. |
| Microplastics are present in marine habitats worldwide and may be ingested by low trophic organisms such as fish larvae, with uncertain physiological consequences. The present study aims at assessing the impact of polyethylene (PE 10-45µM) microbeads ingestion in European sea bass (Dicentrarchus labrax) larvae. Fish were fed an inert diet including 0, 104 and 105 fluorescent microbeads per gram from 7 until 43 days post-hatching (dph). Microbeads were detected in the gastrointestinal tract in all fish fed diet incorporating PE. Our data revealed an efficient elimination of PE beads from the gut since no fluorescent was observed in the larvae after 48h depuration. While the mortality rate increased significantly with the amount of microbeads scored per... |
| Tipo: Text |
Palavras-chave: Microplastic; Fish; Larvae; Ingestion; Survival. |
| Ano: 2015 |
URL: https://archimer.ifremer.fr/doc/00279/39057/37621.pdf |
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| Gonzalez-araya, Ricardo; Lebrun, Luc; Quere, Claudie; Robert, Rene. |
| Four microalgae species (Rhodomonas salina, Thalassiosira weissflogii, Thalassiosira pseudonana and Pavlova lutheri) were evaluated to estimate their potential as food for Ostrea edulis (L.) reproductive conditioning. Best ingestion and absorption were observed with R. salina (3.44 and 1.59 mg g− 1 h− 1, respectively), followed by T. pseudonana (2.75 and 0.98 mg g− 1 h− 1) and P. lutheri (2.40 and 0.91 mg g− 1 h− 1). Oysters fed T. weissflogii exhibited the lowest ingestion and absorption values (1.40 and 0.68 mg g− 1 h− 1). Proximate composition (proteins and carbohydrates) and lipid content (fatty acids and sterols) analysed in four main tissues (gonad, digestive gland, muscle and gills) also differed significantly with diet. Protein ranged from 355 mg... |
| Tipo: Text |
Palavras-chave: Ostrea edulis; Conditioning; Algal diets; Ingestion; Absorption; Biochemical composition. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00090/20092/17731.pdf |
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| Claro, F; Fossi, Mc; Ioakeimidis, C; Baini, M; Lusher, Al; Mc Fee, W; Mcintosh, Rr; Pelmatti, T; Sorce, M; Galgani, Francois; Hardesky, Bd. |
| Adverse impacts of marine litter is documented on >1400 species, including marine megafauna (fish, birds, sea turtles and mammals). The primary impacts include ingestion and entanglement, and there is increasing concern about chemical contamination via ingestion. Numerous survey approaches and monitoring programs have been developed and implemented around the world. They may aim to provide data about parameters such as species distribution and interactions with anthropogenic activities. During the Sixth International Marine Debris Conference, a session was dedicated to the tools and constraints in monitoring interactions between litter and megafauna. In the present paper, we summarize 7 case studies which discuss entanglement and ingestion including... |
| Tipo: Text |
Palavras-chave: Litter impact; Megafauna; Tools; Entanglement; Ingestion; Policies. |
| Ano: 2019 |
URL: https://archimer.ifremer.fr/doc/00482/59390/65963.pdf |
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| Morais, Sofia; Conceicao, L; Ronnestad, I; Koven, W; Cahu, Chantal; Zambonino, Jose-luis; Dinis, M. |
| A growth depressing effect of high dietary neutral lipid levels in marine fish larvae has been reported. This may be a result of a decrease in the efficiency or activity of digestive enzymes, a reduction in absorption efficiency and/or a decrease in food intake. The present work reviews recent studies carried out on commercially valuable species (Atlantic herring, Senegalese sole, European seabass and gilthead seabream) that investigated the effects of neutral lipid level and lipid source (fatty acid composition) on some of these key factors influencing larval growth. The results seem to collectively indicate that lipid transport from the enterocytes into the body may be more problematic in larval stages dealing with high neutral lipid diets than lipolytic... |
| Tipo: Text |
Palavras-chave: Ingestion; Lipid droplets; Digestion; Absorption; Fatty acid composition; Lipid quantity. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3029.pdf |
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| Huvet, Arnaud; Jeffroy, F; Fabioux, C; Daniel, Jean-yves; Quillien, Virgile; Van Wormhoudt, A; Moal, Jeanne; Samain, Jean-francois; Boudry, Pierre; Pouvreau, Stephane. |
| To examine further a previously reported association between amylase gene polymorphism and growth in the Pacific oyster Crassostrea gigas, ecophysiological parameters and biochemical and molecular expression levels of alpha-amylase were studied in Pacific oysters of different amylase genotypes. Genotypes that previously displayed significantly different growth were found to be significantly different for ingestion and absorption efficiency. These estimated parameters, used in a dynamic energy budget model, showed that observed ingestion rates (unlike absorption efficiencies) allowed an accurate prediction of growth potential in these genotypes. The observed association between growth and amylase gene polymorphism is therefore more likely to be related to... |
| Tipo: Text |
Palavras-chave: Ingestion; Gene expression; Bivalve; Alpha amylase. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/publication-5165.pdf |
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| Politis, Sebastian Nikitas; Sorensen, Sune R.; Mazurais, David; Servili, Arianna; Zambonino-infante, Jose-luis; Miest, Joanna J.; Clemmesen, Catriona M.; Tomkiewicz, Jonna; Butts, Ian A. E.. |
| Digestive system functionality of fish larvae relies on the onset of genetically pre-programmed and extrinsically influenced digestive functions. This study explored how algal supplementation (green-water) until 14 days post hatch (dph) and the ingestion of food [enriched rotifer (Brachionus plicatilis) paste] from 15 dph onward affects molecular maturation and functionality of European eel larval ingestion and digestion mechanisms. For this, we linked larval biometrics to expression of genes relating to appetite [ghrelin (ghrl), cholecystokinin (cck)], food intake [proopiomelanocortin (pomc)], digestion [trypsin (try), triglyceride lipase (tgl), amylase (amyl)], energy metabolism [ATP synthase F0 subunit 6 (atp6), cytochrome-c-oxidase 1 (cox1)], growth... |
| Tipo: Text |
Palavras-chave: Anguilla anguilla; Ingestion; Digestion; Gene expression; RNA/DNA; Aquaculture. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00463/57445/59550.pdf |
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| Oliveira Filho,Carlos Alberto Alves; Machado,Fernanda Samarini; Ferreira,Alexandre Lima; Tomich,Thierry Ribeiro; Maurício,Rogério Martins; Campos,Mariana Magalhães; Silva,Camilla Flávia Portela Gomes da; Azevêdo,José Augusto Gomes de; Pereira,Luiz Gustavo Ribeiro. |
| Abstract: The objective of this work was to evaluate the effects of nutritional plans and breed composition on nutrient intake and digestibility, nitrogen balance, and performance of dairy heifers in tropical conditions. Thirty-six heifers - 12 Holstein, 12 Gyr, and 12 Gyrolando F1 (½ Holstein × ½ Gyr) - were housed in a tie-stall system and randomly distributed, adopting a completely randomized design in a 3×3 factorial arrangement (nutritional plans and breed composition). The diets were formulated to enable weight gains of 200, 400, and 800 g per day, corresponding to the nutritional plans 11, 14, and 19 g kg-1 body weight (BW), respectively. The intake of dry matter, fibrous fractions (g kg-1 BW-0.75), and metabolizable energy (kcal-1 BW-0.75) in the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Gyr; Gyrolando; Ingestion; Nitrogen balance; Weight gain. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0100-204X2018000200247 |
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| Fiorentini,Giovani; Santana,Márcia Cristina Araújo; Sampaio,Alexandre Amstalden Moraes; Reis,Ricardo Andrade; Ribeiro,Andressa Ferreira; Berchielli,Telma Teresinha. |
| The objective of this study was to evaluate the effect of different lipid sources on nutrient intake, performance, development and carcass characteristics of heifers raised in confinement. Twenty-one crossbreed heifers (Nellore × Santa Gertrudis × Braunvieh) received 600 g/kg forage composed of corn silage and 400 g/kg concentrate with a 58.0 g/kg fat content in the total diet. The following lipid sources were used: soybeans, protected fat (Megalac-E®) and soybean oil. The experimental design was completely randomized, with three treatments and seven replicates, and the means were compared by the Tukey test at 5%. The protected fat diet resulted in a greater intake of dry matter (8.80 kg/d) when compared with the other diets. The animals that were fed the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Carcass; Females; Ingestion; Protected fat; Soy oil and soybean. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012000600025 |
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| Registros recuperados: 11 | |
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