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| Jauzein, Cecile; Acaf, Laury; Accoroni, Stefano; Asnaghi, Valentina; Fricke, Anna; Hachani, Mohamed Amine; Saab, Marie Abboud-abi; Chiantore, Mariachiara; Mangialajo, Luisa; Totti, Cecilia; Zaghmouri, Imen; Lemee, Rodolphe. |
| Toxic blooms of Ostreopsis spp. are greatly challenging to monitor due to the complexity and variability of cell repartition among benthic and pelagic compartments. This results in marked differences in employed methodologies for the survey of their dynamics and hampers the definition of the associated toxic risk. The present study aims at testing and improving common methodologies used for sampling, processing and counting of field samples. It contributes to the identification of the most suitable strategies for the monitoring and mitigation of Ostreopsis blooms in coastal waters. For a sampling based on the collection of macrophytes, the role of the fixative addition and of agitation steps in the efficiency of epiphytic cell collection was defined. For... |
| Tipo: Text |
Palavras-chave: Patchiness; Macrophyte substrate; Artificial substrate; Recommendations for monitoring. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00436/54714/56188.pdf |
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| Richard, Marion; Maurice, Julien-thomas; Anginot, Aurore; Paticat, Francois; Verdegem, M. C. J.; Hussenot, Jerome. |
| The main objectives of this investigation were to test the effects of (i) the presence of periphyton substrates, (ii) rearing density and (iii) supplemental feeding with dry feed on the growth and production of golden mullet (Liza aurata) juveniles. Twenty-six 1 m(2)-cages were installed in a French marine pond from April till June 2008. Mullets were stocked in cages with or without substrate at a density of 0, 20,40 or 60 individuals per cage. Each treatment was carried out in triplicate. In addition, 20 fish were put in three tanks and fed ad libitum with dry feed. The results showed that (i) although mullets were seen to graze on periphyton substrates, their presence did not affect,mullet growth and production. In future studies, meshed substrates could... |
| Tipo: Text |
Palavras-chave: Periphyton; Mullet; Extensive aquaculture; Artificial substrate; Marine pond. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00029/14067/11614.pdf |
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| Richard, Marion; Trottier, C.; Verdegem, M. C. J.; Hussenot, Jerome. |
| Periphyton is an additional food source in African and Asian brackish and freshwater fish ponds. The present study was a preliminary assessment of periphyton development on artificial substrates in temperate marine ponds. The effects of submersion time, substrate type, water depth, and total or partial sampling methods on the quantity and quality of periphyton collected, were evaluated. Four types of substrate (W: wooden poles, S: smooth fiber-glass strips, m: mosquito screen (1 mm-mesh) and M: garden netting (5 mm-mesh)) were deployed in a marine pond, and periphyton was collected 15 and 30 days later. The total amount of periphyton per substrate unit was collected as one sample or as 5 sub-samples. Results showed that (i) periphyton biomass in a marine... |
| Tipo: Text |
Palavras-chave: Aquaculture; Marine pond; Artificial substrate; Fouling; Periphyton. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2009/publication-7422.pdf |
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| Bumbeer,Janaína de Araújo; Rocha,Rosana Moreira da. |
| Invasion by marine species, often considered a grave threat to marine ecosystems, occurs throughout the world as a consequence of many anthropogenic activities. In coastal Paraná, many factors including shipping, aquaculture and the use of artificial substrates provide suitable environments for the establishment and rapid spread of introduced marine species. To better understand this process, the encrusting community was studied on polyethylene plates (n = 120, 10 x 10 cm) that were placed seasonally at fixed locations on the inner continental shelf to detect non-native species. Of the 62 taxa found, 40 were identified to species, 14 of which were native, 9 introduced and 17 cryptogenic. We found a new introduction while most introduced species were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artificial substrate; Biofouling; Marine bioinvasion; Sublittoral. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000200005 |
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