Effect of copper on hatching and development of larvae of the estuarine crab Chasmagnathus granulata (Decapoda, Brachyura)

Ovigerous females of the estuarine crab Chasmagnathus granulata were exposed to 0.05, 0.1, 0.5, and 3 mg/L of copper during the egg incubation period. Regarding egg loss, a higher effect was observed at higher copper concentrations: 80% of the females lost their eggs at 0.5 mg/L, whereas no hatching...

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Bibliographic Details
Published in:Environmental toxicology and chemistry 2001-07, Vol.20 (7), p.1579-1583
Main Authors: Zapata, Valeria, Greco, Laura López, Rodríguez, Enrique M.
Format: Article
Language:English
Subjects:
Animal, plant and microbial ecology
Animals
Applied ecology
Biological and medical sciences
Brachyura - physiology
Chasmagnathus granulata
Copper
Copper - adverse effects
Ecotoxicology, biological effects of pollution
Effects of pollution and side effects of pesticides on protozoa and invertebrates
Eggs
Embryo, Nonmammalian - drug effects
Environmental Exposure
Estuarine crabs
Eye Abnormalities - chemically induced
Eye Abnormalities - veterinary
Fundamental and applied biological sciences. Psychology
Larva - growth & development
Larvae
Morphological abnormalities
Pigmentation
Population Dynamics
Water Pollutants, Chemical - adverse effects
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Summary:Ovigerous females of the estuarine crab Chasmagnathus granulata were exposed to 0.05, 0.1, 0.5, and 3 mg/L of copper during the egg incubation period. Regarding egg loss, a higher effect was observed at higher copper concentrations: 80% of the females lost their eggs at 0.5 mg/L, whereas no hatching was seen in those exposed to 3 mg/L. A significant decrease was found in the number of hatched larvae in females exposed to 0.5 mg/L, as was a significant decrease in the duration of the incubation period. In addition, several morphological abnormalities were seen and observed. Hydropsy and atrophy of the dorsal spine, pleon, and maxillipeds occurred at the higher copper concentrations, as found in previous studies with other pollutants. Hyperpigmentation of the cephalothorax and pleon was the only abnormality observed at every concentration assayed. Hypopigmented eyes were also evident. This pathology showed that among all defects observed at 0.5 mg/L, hypopigmented eyes had the highest incidence and might be a specific response to copper.
ISSN:0730-7268
1552-8618
DOI:10.1002/etc.5620200723