Inhibition of molting by cadmium in the crab Chasmagnathus granulata (Decapoda Brachyura)
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 detec...
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2003
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0166445X_v64_n2_p155_RodriguezMoreno http://hdl.handle.net/20.500.12110/paper_0166445X_v64_n2_p155_RodriguezMoreno |
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paper:paper_0166445X_v64_n2_p155_RodriguezMoreno |
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paper:paper_0166445X_v64_n2_p155_RodriguezMoreno2023-06-08T15:15:50Z Inhibition of molting by cadmium in the crab Chasmagnathus granulata (Decapoda Brachyura) 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 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. 2003 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0166445X_v64_n2_p155_RodriguezMoreno http://hdl.handle.net/20.500.12110/paper_0166445X_v64_n2_p155_RodriguezMoreno |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Inhibition of molting by cadmium in the crab Chasmagnathus granulata (Decapoda Brachyura) |
| topic_facet |
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 |
| description |
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. |
| title |
Inhibition of molting by cadmium in the crab Chasmagnathus granulata (Decapoda Brachyura) |
| title_short |
Inhibition of molting by cadmium in the crab Chasmagnathus granulata (Decapoda Brachyura) |
| title_full |
Inhibition of molting by cadmium in the crab Chasmagnathus granulata (Decapoda Brachyura) |
| title_fullStr |
Inhibition of molting by cadmium in the crab Chasmagnathus granulata (Decapoda Brachyura) |
| title_full_unstemmed |
Inhibition of molting by cadmium in the crab Chasmagnathus granulata (Decapoda Brachyura) |
| title_sort |
inhibition of molting by cadmium in the crab chasmagnathus granulata (decapoda brachyura) |
| publishDate |
2003 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0166445X_v64_n2_p155_RodriguezMoreno http://hdl.handle.net/20.500.12110/paper_0166445X_v64_n2_p155_RodriguezMoreno |
| _version_ |
1768545089953464320 |