Métabolisme de l'iode (131I) et formation de la scléroprotéine iodée (gorgonine) du squelette corné chez Eunicella verrucosa (Pallas)

Roche, J; Andre, S; Salvatore, G

doi:10.1016/0010-406x(60)90032-3

Cited by 16 publications

(2 citation statements)

References 2 publications

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“…This is explained by the fact that the skeleton is formed both by calcite and by a horn-like structural protein called gorgonin. Gorgonin is secreted by the soft tissues, and the ingested food serves as the source of amino acids and other molecules used in its synthesis (Roche et al 1960, Heikoop et al 2002, Sherwood 2006). Such skeleton is very enriched in carbon and nitrogen (35 and 12% of the total dry weight, respectively) and has therefore carbon and nitrogen signatures close to the signatures of the tissue influenced by the food source (Heikoop et al 2002, Sherwood 2006 or by the external levels of dissolved inorganic nitrogen (Ward-Paige et al 2005, Risk et al 2009, Sherwood et al 2010.…”

Section: Discussionmentioning

confidence: 99%

Nutrient acquisition in four Mediterranean gorgonian species

Cocito¹,

Ferrier‐Pagés²,

Cupido³

et al. 2013

Mar. Ecol. Prog. Ser.

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Carbon and nitrogen isotope abundance values (δ 13 C and δ 15 N, respectively) were measured for the first time in the soft tissue, axial skeleton, and spicules of 4 Mediterranean gorgonians, 3 asymbiotic (Leptogorgia sarmentosa, Paramuricea clavata, and Eunicella verrucosa) and 1 symbiotic with autotrophic dinoflagellates (Eunicella singularis). The isotopic composition of their diet, i.e. zooplankton, particulate organic matter (POM), and sedimentary organic matter (SOM), was also measured to understand gorgonian feeding ecology. (1) Carbon and nitrogen signatures of the symbiotic E. singularis tissue in summer differed significantly from the signatures of the other species; (2) carbon and nitrogen signatures of the axial skeleton were similar to those of the tissue, because the skeleton is primarily made of gorgonin secreted by the tissue; and (3) spicules had a high δ 13 C signature because they are made by a combination of 60 to 76% of respiratory CO 2 and of external CO 2 , with a high δ 13 C signature. Comparison of the isotopic signatures of the gorgonian tissues and the food sources indicated that E. singularis and P. clavata had the same diet in both winter and summer, either zooplankton for E. singularis or POM and SOM for P. clavata. Conversely, L. sarmentosa and E. verrucosa shifted from zooplankton in winter to SOM in summer. These results bring insights into the feeding ecology of temperate gorgonians and explain their distribution, abundance, and role in the flow of particulate matter between the water column and the benthos.

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Section: Discussionmentioning

confidence: 99%

Nutrient acquisition in four Mediterranean gorgonian species

Cocito¹,

Ferrier‐Pagés²,

Cupido³

et al. 2013

Mar. Ecol. Prog. Ser.

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“…Since then, a number of reports on the isolation of halogenated tyrosine derivatives from marine sponges, sea fans, and other gorgonians have appeared (350)(351)(352). It appears that these amino acids, when incorporated into structural proteins, may play a role in stabilizing the proteins in the organism by improving the adhesion between protein fibers or sheets (352).…”

Section: Brmentioning

confidence: 99%

Naturally Occurring Organohalogen Compounds--A Survey

Gribble¹

1992

J. Nat. Prod.

357

199

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More than 1 5 0 0 different halogenated chemicals are produced and discharged into our biosphere by plants, marine organisms, insects, bacteria, fungi, and other natural processes. In a few cases, the quantities of these naturally occurring halogenated compounds far exceed the amounts of the same chemicals from anthropogenic sources. Furthermore, the evidence is overwhelming that natural enzymatic, thermal, and other processes are constantly occurring in the oceans, in the atmosphere, and in the soil that lead to the formation of chlorinated and brominated phenols and many other halogenated chemicals, including dioxins, that previously were thought only to result from the actions of man. Moreover, it is clear that these natural processes have been producing halogenated compounds and have been an important component of our ecosystem for eons.

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