EdenteV2, Main, Exploration, bibRecord, 00CA95

Ichthyotoxism by a paralytic toxin produced by marine dinoflagellates of the genus Ceratium : Relationship to fraction β isolated from the sponge Tedania ignis

Identifieur interne : 00CA95 ( Main/Exploration ); précédent : 00CA94; suivant : 00CA96

Ichthyotoxism by a paralytic toxin produced by marine dinoflagellates of the genus Ceratium : Relationship to fraction β isolated from the sponge Tedania ignis

Auteurs : A. J. Mijares [Venezuela] ; C. Sevcik [Venezuela] ; C. A. Barboza [Venezuela] ; J. A. Saavedra [Venezuela]

Source :

Toxicon [ 0041-0101 ] ; 1985.

RBID : ISTEX:031BBCB162635E3339EC11DD1759FD3A08C6838A

Descripteurs français

Wicri :
- topic : Plancton.

English descriptors

Abstract

Abstract: Two hundred tons of the plankton feeding sardine Cetengraulis edentulus died in March 1982, in Carenero (10°10′N, 66°05′W), Venezuela. A fraction was extracted from this fish that was toxic to mice by i.p. injection. The animals died in less than 4 min and showed generalized flaccid paralysis. Gel filtration on Sephadex G15 and Bio Gel P2 showed that the toxicity is related to a fraction that blocks the release of acetylcholine in frog (Rana pipiens) neuromuscular junctions. This toxin is similar in chemical properties and presynaptic effect to fraction β isolated from the sponge T. ignis by Sevcik and Barboza. Fractions of the same biological action and chemical properties were isolated from plankton samples collected in the area of the ichthyotoxism. The correlation analysis between the presence of toxin and a plankton species in a sample, was carried out with a feasibility index (as %) defined by Sevcik and Mijares. Random samples of plankton (29) were collected in 3 locations (11°50′N, 68°15′W; 10°36′24″N, 67°14′7″W and 10°21′N, 64°21′W). The correlation carried out over 167 species of phytoplankton present in the samples indicates that the species most likely to be responsible for the production of the fraction β, in order of feasibility index (in parentheses) are: Ceratium furca (54%), Protoperidinium sp. (1.7%) and Protoperidinium pallidum (1.6%). In some samples a fraction similar to fraction α from T. ignis was also found. The identification of the phytoplankton responsible for this fraction is, however, less conclusive. The feasibility indexes are: Protoperidinium sp. (58%), Ceratium inflatum (30%), Podolampas sp. (23%), Ornithocercus steini (21%). The genus Ceratium was the second most abundant in Carenero at the time of the fish death. These results suggest that the toxins isolated from C. edentulus and T. ignis have a planktonic origin.

Url:

https://api.istex.fr/document/031BBCB162635E3339EC11DD1759FD3A08C6838A/fulltext/pdf

DOI: 10.1016/0041-0101(85)90145-X

Affiliations:

Venezuela

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Le document en format XML

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<term>Acetic acid</term>
<term>Armored plankton</term>
<term>Biological activity</term>
<term>Ceratium</term>
<term>Ceratium furca</term>
<term>Chemical properties</term>
<term>Correlation analysis</term>
<term>Diarrhetic shellfish poisoning</term>
<term>Dinoflagellate</term>
<term>Edentulus</term>
<term>Elution pattern</term>
<term>Ethylene glycol</term>
<term>Feasibility</term>
<term>Feasibility idea times</term>
<term>Feasibility index</term>
<term>Fish death</term>
<term>Frog</term>
<term>Frog sartorius</term>
<term>Furca</term>
<term>Genus</term>
<term>Genus ceratium</term>
<term>Genus level</term>
<term>High concentration</term>
<term>Ignis</term>
<term>Lower half</term>
<term>Mangrove forests</term>
<term>Marine dinoflagellates</term>
<term>Mijares</term>
<term>Molecular weight</term>
<term>Other details</term>
<term>Other hand</term>
<term>Paralytic toxin</term>
<term>Phytoplankton</term>
<term>Plankton</term>
<term>Plankton samples</term>
<term>Plankton species</term>
<term>Planktonic origin</term>
<term>Potassium conductances</term>
<term>Protoperidinium</term>
<term>Relative volume</term>
<term>Sardine</term>
<term>Sardine cetengraulis edentulus</term>
<term>Sephadex</term>
<term>Sevcik</term>
<term>Sponge tedania ignis</term>
<term>Standard deviation</term>
<term>Structural elucidation</term>
<term>Tedania</term>
<term>Tetrodotoxin</term>
<term>Toxic fractions</term>
<term>Toxin</term>
<term>Trumpet shell</term>
<term>West germany</term>
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<term>Acetic acid</term>
<term>Armored plankton</term>
<term>Biological activity</term>
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<term>Chemical properties</term>
<term>Correlation analysis</term>
<term>Diarrhetic shellfish poisoning</term>
<term>Dinoflagellate</term>
<term>Edentulus</term>
<term>Elution pattern</term>
<term>Ethylene glycol</term>
<term>Feasibility</term>
<term>Feasibility idea times</term>
<term>Feasibility index</term>
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<term>Mangrove forests</term>
<term>Marine dinoflagellates</term>
<term>Mijares</term>
<term>Molecular weight</term>
<term>Other details</term>
<term>Other hand</term>
<term>Paralytic toxin</term>
<term>Phytoplankton</term>
<term>Plankton</term>
<term>Plankton samples</term>
<term>Plankton species</term>
<term>Planktonic origin</term>
<term>Potassium conductances</term>
<term>Protoperidinium</term>
<term>Relative volume</term>
<term>Sardine</term>
<term>Sardine cetengraulis edentulus</term>
<term>Sephadex</term>
<term>Sevcik</term>
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<term>Standard deviation</term>
<term>Structural elucidation</term>
<term>Tedania</term>
<term>Tetrodotoxin</term>
<term>Toxic fractions</term>
<term>Toxin</term>
<term>Trumpet shell</term>
<term>West germany</term>
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<front><div type="abstract" xml:lang="en">Abstract: Two hundred tons of the plankton feeding sardine Cetengraulis edentulus died in March 1982, in Carenero (10°10′N, 66°05′W), Venezuela. A fraction was extracted from this fish that was toxic to mice by i.p. injection. The animals died in less than 4 min and showed generalized flaccid paralysis. Gel filtration on Sephadex G15 and Bio Gel P2 showed that the toxicity is related to a fraction that blocks the release of acetylcholine in frog (Rana pipiens) neuromuscular junctions. This toxin is similar in chemical properties and presynaptic effect to fraction β isolated from the sponge T. ignis by Sevcik and Barboza. Fractions of the same biological action and chemical properties were isolated from plankton samples collected in the area of the ichthyotoxism. The correlation analysis between the presence of toxin and a plankton species in a sample, was carried out with a feasibility index (as %) defined by Sevcik and Mijares. Random samples of plankton (29) were collected in 3 locations (11°50′N, 68°15′W; 10°36′24″N, 67°14′7″W and 10°21′N, 64°21′W). The correlation carried out over 167 species of phytoplankton present in the samples indicates that the species most likely to be responsible for the production of the fraction β, in order of feasibility index (in parentheses) are: Ceratium furca (54%), Protoperidinium sp. (1.7%) and Protoperidinium pallidum (1.6%). In some samples a fraction similar to fraction α from T. ignis was also found. The identification of the phytoplankton responsible for this fraction is, however, less conclusive. The feasibility indexes are: Protoperidinium sp. (58%), Ceratium inflatum (30%), Podolampas sp. (23%), Ornithocercus steini (21%). The genus Ceratium was the second most abundant in Carenero at the time of the fish death. These results suggest that the toxins isolated from C. edentulus and T. ignis have a planktonic origin.</div>
</front>
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Ichthyotoxism by a paralytic toxin produced by marine dinoflagellates of the genus Ceratium : Relationship to fraction β isolated from the sponge Tedania ignis

Ichthyotoxism by a paralytic toxin produced by marine dinoflagellates of the genus Ceratium : Relationship to fraction β isolated from the sponge Tedania ignis

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri