Mercury and Cadmium Concentrations in Muscle Tissue of the Blue Shark (Prionace glauca) in the Central Eastern Pacific Ocean
| Autor: | Alfredo Ordiano-Flores, Isabel García-Arévalo, Felipe Galván-Magaña, Marcos D. Calle-Morán, Rubén D. Castro-Rendón |
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| Rok vydání: | 2021 |
| Předmět: |
Muscle tissue
Male Endocrinology Diabetes and Metabolism Clinical Biochemistry chemistry.chemical_element Biology Biochemistry Pacific ocean Inorganic Chemistry Longline fishing Animal science medicine Sexual maturity Animals Rank correlation Cadmium Pacific Ocean Muscles Biochemistry (medical) Prionace glauca General Medicine Mercury biology.organism_classification Mercury (element) medicine.anatomical_structure chemistry Sharks Female |
| Zdroj: | Biological trace element research. 200(7) |
| ISSN: | 1559-0720 |
| Popis: | Blue sharks (Prionace glauca) are an important resource in Ecuador’s fisheries; however, biological and ecological information of this species in the area is scarce. The goal of this study was to determine Hg and Cd concentration levels in muscle tissue, as well as its relationship with size, sex, and sexual maturity stages. A total of 80 specimens (34 females and 46 males) collected from the Ecuadorian longline fishing fleet between June and December 2012 were examined. Sizes for females ranged from 97 to 280 cm total length, with values of Hg between 0.20 to 2.38 mg kg−1 wet weight (x = 0.71, ± 0.61) and values of Cd between 0.01 and 0.12 mg kg−1 (x = 0.04, ± 0.02). Sizes for males ranged from 137 to 290 cm TL with values of Hg between 0.17 and 2.94 mg kg−1 (x = 0.81, ± 0.68) and Cd concentrations between 0.01 and 0.12 mg kg−1 (x = 0.04, ± 0.03). A Spearman’s rank correlation showed a medium positive association between TL and Hg concentrations (ρ = 0.66; p |
| Databáze: | OpenAIRE |
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