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Abstract:

The effect of cadmium on molting of the estuarine crab Chasmagnathus granulata was assayed. Adult males were eyestalk-ablated, in order to synchronically induce molting, and were then chronically exposed to cadmium at 0.25 or 0.50 mg/l. At the highest concentration, a significant mortality was detected at the time of molting, in the few crabs that could reach the E stage. However, most of the crabs exposed from the beginning of the premolt period (D0 stage) to 0.50 mg/l of cadmium were arrested at the D1″ stage. This effect was not seen when crabs were exposed to the same cadmium concentration from either D1‴ or D3 premolt stages. Crabs arrested by cadmium did not present any difference in the calcium content of carapace, compared to controls, while ecdysteroid levels of those crabs were similar to the ones of control crabs that were in the same premolt stage but could finally molt. These results suggest that cadmium could be preventing the normal peaking of ecdysteroids needed for molting. Since eyestalk-ablated crabs were used, a presumably direct effect of cadmium on Y-organ seems likely, by affecting cytoplasmatic calcium concentration and/or other actions. © 2003 Elsevier Science B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Inhibition of molting by cadmium in the crab Chasmagnathus granulata (Decapoda Brachyura)
Autor:Rodríguez Moreno, P.A.; Medesani, D.A.; Rodríguez, E.M.
Filiación:Dept. of Biodiv./Exp. Biology, University of Buenos Aires, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:Cadmium; Calcium; Crustaceans; Ecdysteroids; Molting; cadmium; ecdysteroid; cadmium; crab; ecotoxicology; molt; mortality; pollution effect; animal experiment; animal model; article; bioassay; chasmagnathus granulata; concentration (parameters); concentration response; controlled study; crab; decapoda brahcyura; drug exposure; eye; inhibition kinetics; male; molting; mortality; nonhuman; priority journal; toxicity; Brachyura; Chasmagnathus granulata; Chasmagnathus granulata; Crustacea; Decapoda (Crustacea taxon); Decapoda (Crustacea); Varunidae
Año:2003
Volumen:64
Número:2
Página de inicio:155
Página de fin:164
DOI: http://dx.doi.org/10.1016/S0166-445X(03)00029-8
Título revista:Aquatic Toxicology
Título revista abreviado:Aquatic Toxicol.
ISSN:0166445X
CODEN:AQTOD
CAS:cadmium, 22537-48-0, 7440-43-9
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0166445X_v64_n2_p155_RodriguezMoreno

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Citas:

---------- APA ----------
Rodríguez Moreno, P.A., Medesani, D.A. & Rodríguez, E.M. (2003) . Inhibition of molting by cadmium in the crab Chasmagnathus granulata (Decapoda Brachyura). Aquatic Toxicology, 64(2), 155-164.
http://dx.doi.org/10.1016/S0166-445X(03)00029-8
---------- CHICAGO ----------
Rodríguez Moreno, P.A., Medesani, D.A., Rodríguez, E.M. "Inhibition of molting by cadmium in the crab Chasmagnathus granulata (Decapoda Brachyura)" . Aquatic Toxicology 64, no. 2 (2003) : 155-164.
http://dx.doi.org/10.1016/S0166-445X(03)00029-8
---------- MLA ----------
Rodríguez Moreno, P.A., Medesani, D.A., Rodríguez, E.M. "Inhibition of molting by cadmium in the crab Chasmagnathus granulata (Decapoda Brachyura)" . Aquatic Toxicology, vol. 64, no. 2, 2003, pp. 155-164.
http://dx.doi.org/10.1016/S0166-445X(03)00029-8
---------- VANCOUVER ----------
Rodríguez Moreno, P.A., Medesani, D.A., Rodríguez, E.M. Inhibition of molting by cadmium in the crab Chasmagnathus granulata (Decapoda Brachyura). Aquatic Toxicol. 2003;64(2):155-164.
http://dx.doi.org/10.1016/S0166-445X(03)00029-8