Survival and molting of the pea crab larvae Tunicotheres moseri rathbun 1918 (Brachyura, Pinnotheridae) exposed to copper
The acute lethal toxicity of copper, as well as its sublethal effect on molting, was studied on larval and postlarval stages of the pinnotherid crab Tunicotheres moseri. The most sensitive stage was zoea I, presenting a significant mortality above 0.5 μg · L-1. Abnormal setation of the maxillipeds w...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00904341_v40_n4_p505_LopezGreco |
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todo:paper_00904341_v40_n4_p505_LopezGreco2023-10-03T14:54:36Z Survival and molting of the pea crab larvae Tunicotheres moseri rathbun 1918 (Brachyura, Pinnotheridae) exposed to copper López Greco, L.S. Bolaños, J. Rodríguez, E.M. Hernández, G. copper copper larva molt pollution exposure survival acute toxicity animal experiment article body size crab Crustacea environmental exposure growth rate larval development molting morphogenesis mortality nonhuman pollutant priority journal survival rate Animals Brachyura Copper Female Larva Molting Survival Analysis Swimming Water Pollutants, Chemical The acute lethal toxicity of copper, as well as its sublethal effect on molting, was studied on larval and postlarval stages of the pinnotherid crab Tunicotheres moseri. The most sensitive stage was zoea I, presenting a significant mortality above 0.5 μg · L-1. Abnormal setation of the maxillipeds was observed in zoeae II moulted from zoeae I exposed to 100 μg · L-1 and higher copper concentrations, causing a reduced swimming activity of the larvae. This pathology could be reverted after molting of affected zoea II to megalopa, which would be the first report in crustacean larvae that states the possibility of reverting morphological abnormalities after molting. For zoeae II and megalopae, the inhibition of molting and high mortality was registered at 1,000 μg · L-1. The effect of copper on the duration of the larval and postlarval stages was differential: It retarded the duration of the stage zoea I, did not modify that of zoea II, and accelerated the ecdysis of the megalopae to first crab. However, precocious molting to megalopae was associated with a smaller body size at the concentration of 100 μg · L-1. This differential effect of copper on the larval stages throughout the larval development could be ecologically relevant. Because of their lecithotrophia, their short developmental period, their good survival in control conditions, and the high sensitivity showed to copper (especially zoea I), larvae of T. moseri have shown that they are an excellent model for studying the effect of pollutant on survival, molting rate, growth, and morphogenetic changes during development. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00904341_v40_n4_p505_LopezGreco |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
copper copper larva molt pollution exposure survival acute toxicity animal experiment article body size crab Crustacea environmental exposure growth rate larval development molting morphogenesis mortality nonhuman pollutant priority journal survival rate Animals Brachyura Copper Female Larva Molting Survival Analysis Swimming Water Pollutants, Chemical |
| spellingShingle |
copper copper larva molt pollution exposure survival acute toxicity animal experiment article body size crab Crustacea environmental exposure growth rate larval development molting morphogenesis mortality nonhuman pollutant priority journal survival rate Animals Brachyura Copper Female Larva Molting Survival Analysis Swimming Water Pollutants, Chemical López Greco, L.S. Bolaños, J. Rodríguez, E.M. Hernández, G. Survival and molting of the pea crab larvae Tunicotheres moseri rathbun 1918 (Brachyura, Pinnotheridae) exposed to copper |
| topic_facet |
copper copper larva molt pollution exposure survival acute toxicity animal experiment article body size crab Crustacea environmental exposure growth rate larval development molting morphogenesis mortality nonhuman pollutant priority journal survival rate Animals Brachyura Copper Female Larva Molting Survival Analysis Swimming Water Pollutants, Chemical |
| description |
The acute lethal toxicity of copper, as well as its sublethal effect on molting, was studied on larval and postlarval stages of the pinnotherid crab Tunicotheres moseri. The most sensitive stage was zoea I, presenting a significant mortality above 0.5 μg · L-1. Abnormal setation of the maxillipeds was observed in zoeae II moulted from zoeae I exposed to 100 μg · L-1 and higher copper concentrations, causing a reduced swimming activity of the larvae. This pathology could be reverted after molting of affected zoea II to megalopa, which would be the first report in crustacean larvae that states the possibility of reverting morphological abnormalities after molting. For zoeae II and megalopae, the inhibition of molting and high mortality was registered at 1,000 μg · L-1. The effect of copper on the duration of the larval and postlarval stages was differential: It retarded the duration of the stage zoea I, did not modify that of zoea II, and accelerated the ecdysis of the megalopae to first crab. However, precocious molting to megalopae was associated with a smaller body size at the concentration of 100 μg · L-1. This differential effect of copper on the larval stages throughout the larval development could be ecologically relevant. Because of their lecithotrophia, their short developmental period, their good survival in control conditions, and the high sensitivity showed to copper (especially zoea I), larvae of T. moseri have shown that they are an excellent model for studying the effect of pollutant on survival, molting rate, growth, and morphogenetic changes during development. |
| format |
JOUR |
| author |
López Greco, L.S. Bolaños, J. Rodríguez, E.M. Hernández, G. |
| author_facet |
López Greco, L.S. Bolaños, J. Rodríguez, E.M. Hernández, G. |
| author_sort |
López Greco, L.S. |
| title |
Survival and molting of the pea crab larvae Tunicotheres moseri rathbun 1918 (Brachyura, Pinnotheridae) exposed to copper |
| title_short |
Survival and molting of the pea crab larvae Tunicotheres moseri rathbun 1918 (Brachyura, Pinnotheridae) exposed to copper |
| title_full |
Survival and molting of the pea crab larvae Tunicotheres moseri rathbun 1918 (Brachyura, Pinnotheridae) exposed to copper |
| title_fullStr |
Survival and molting of the pea crab larvae Tunicotheres moseri rathbun 1918 (Brachyura, Pinnotheridae) exposed to copper |
| title_full_unstemmed |
Survival and molting of the pea crab larvae Tunicotheres moseri rathbun 1918 (Brachyura, Pinnotheridae) exposed to copper |
| title_sort |
survival and molting of the pea crab larvae tunicotheres moseri rathbun 1918 (brachyura, pinnotheridae) exposed to copper |
| url |
http://hdl.handle.net/20.500.12110/paper_00904341_v40_n4_p505_LopezGreco |
| work_keys_str_mv |
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