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Tributyltin: A Bottom–Up Regulator of the Crangon crangon Population? ArchiMer
Parmentier, Koen F. V.; Verhaegen, Yves; De Witte, Bavo P.; Hoffman, Stefan; Delbare, Daan H. R.; Roose, Patrick M.; Hylland, Ketil D. E.; Burgeot, Thierry; Smagghe, Guy J.; Cooreman, Kris.
The restrictions and the concerted action of the global ban on the use and presence of tributyltin (TBT) in marine applications to protect ecosystems in the marine environment in 2008 was mainly based on the economic impact on shellfish industries and the dramatic extinction of local mollusk populations in the past. In contrast to the vast datasets on effects on mollusks, the knowledge on impacts on species from other taxa remained in the uncertain until almost two decades ago. The assumption on a long-term TBT-mediated pernicious metabolic bottom–up regulation of the crustacean Crangon crangon population was provoked by the outcome of an EU-project ‘Sources, Consumer Exposure and Risks of Organotin Contamination in Seafood.’ This study reported high TBT...
Tipo: Text Palavras-chave: Tributyltin; Crangon crangon; Endocrine disruption; Ecosystem impact; Ecdysteroids; Ecdysteroid receptor.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00585/69727/67617.pdf
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Evolution des acides nucleiques au cours du developpement larvaire de la crevette rose Palaemon serratus (Pennant). ArchiMer
Campillo, Albert; Regnault, M.; Luquet, P..
The evolution of nucleic acids in larvae of P. serratus reared in the laboratory from hatching to metamorphosis has been studied. From the 1st larval stage to the post-larval stage, DNA and RNA concn decrease: from 185 to 95 uMoles-bases/g PSD for DNA and from 133.5 to 78.75 uMoles-bases for RNA. The concn decrease is not regular; it is emphasized between stages 4 and 5 on the one hand, and between stage 7 and the post-larva on the other hand. The amount of DNA and RNA per larva increases proportionally to the wet weight from stage 1 to the post-larva. As the weight is multiplied by 7.6, total DNA and total RNA are multiplied by 3.80 and 4.25 respectively. The RNA/DNA ratio has a mean value of 0.77; it increases slightly from stage 1 (0.72) to the...
Tipo: Text Palavras-chave: Calliphora; Crangon crangon; Palaemon serratus; Nucleic acids; Larval development; Invertebrate larvae; Biochemistry; Physiology.
Ano: 1975 URL: http://archimer.ifremer.fr/doc/1975/publication-2023.pdf
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Influence du taux de proteines sur la croissance ponderale de Palaemon serratus (Pennant) elevee au laboratoire ArchiMer
Campillo, Albert; Luquet, P..
The quantitiative requirements for protein have been determined in P. serratus reared from the post-larval stage to the 4th month. It appears that the apparent optimum percentage of protein in the diet is a minimum of 60%. At the 8th month, the mean wt of prawn reared with the best artificial diet (diet IV) is only 49% of the wt of shrimp reared with the digestive gland of Patella as a diet. The prawns reared to 4th month on a low-protein diet then reared on a natural diet until the 8th month, show important compensatory growth. However, the prawns do not achieve the wt of the control population, their average wt representing only 16% of the controls.
Tipo: Text Palavras-chave: Crangon crangon; Penaeus japonicus; Homarus vulgaris; Palaemon serratus; Nutritional requirements; Growth; Proteins; Artificial feeding; Crustacean culture; Laboratory culture; Rearing.
Ano: 1975 URL: http://archimer.ifremer.fr/doc/1975/publication-2029.pdf
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La detection des effets subletaux des pollutions: Utilisation in situ d'un indice biochimique, la charge energetique ArchiMer
Sylvestre, C; Batrel, Y; Legal, Y.
Marine water management implies the provision of environmental evolution. This can be seen with tests giving information on organism health. After a presentation of biochemical parameters (energetic charge) the authors describe the technique used and the results obtained with Nassarius reticulatus and Crangon crangon . In practice, the evolution of ratio of energetic charge to total nucleotides is a signal of imbalance in the ecosystem.
Tipo: Text Palavras-chave: Nassarius reticulatus; Gastropoda; Crangon crangon; Malacostraca; Biochemical analysis; Nucleotides; In situ measurements; Estuarine organisms; Sublethal effects; Pollution tolerance.
Ano: 1985 URL: http://archimer.ifremer.fr/doc/1985/acte-1306.pdf
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