TY - JOUR
T1 - Mercury and Cadmium Concentrations in Muscle Tissue of the Blue Shark (Prionace glauca) in the Central Eastern Pacific Ocean
AU - Castro-Rendón, Rubén D.
AU - Calle-Morán, Marcos D.
AU - García-Arévalo, Isabel
AU - Ordiano-Flores, Alfredo
AU - Galván-Magaña, Felipe
N1 - Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
PY - 2022/7
Y1 - 2022/7
N2 - 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 (x̄ = 0.71, ± 0.61) and values of Cd between 0.01 and 0.12 mg kg−1 (x̄ = 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 (x̄ = 0.81, ± 0.68) and Cd concentrations between 0.01 and 0.12 mg kg−1 (x̄ = 0.04, ± 0.03). A Spearman’s rank correlation showed a medium positive association between TL and Hg concentrations (ρ = 0.66; p < 0.05), but there was no correlation between TL and Cd concentrations (ρ = 0.00, p < 0.05). Of the analyzed sharks, 46% and 20% had Hg and Cd concentrations, respectively, greater than the limit established by authorities for fishes consumed by humans.
AB - 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 (x̄ = 0.71, ± 0.61) and values of Cd between 0.01 and 0.12 mg kg−1 (x̄ = 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 (x̄ = 0.81, ± 0.68) and Cd concentrations between 0.01 and 0.12 mg kg−1 (x̄ = 0.04, ± 0.03). A Spearman’s rank correlation showed a medium positive association between TL and Hg concentrations (ρ = 0.66; p < 0.05), but there was no correlation between TL and Cd concentrations (ρ = 0.00, p < 0.05). Of the analyzed sharks, 46% and 20% had Hg and Cd concentrations, respectively, greater than the limit established by authorities for fishes consumed by humans.
KW - Cadmium
KW - Ecuador
KW - Mercury
KW - Pacific Ocean
KW - Prionace glauca
UR - http://www.scopus.com/inward/record.url?scp=85116255255&partnerID=8YFLogxK
U2 - 10.1007/s12011-021-02932-7
DO - 10.1007/s12011-021-02932-7
M3 - Artículo
C2 - 34599733
AN - SCOPUS:85116255255
SN - 0163-4984
VL - 200
SP - 3400
EP - 3411
JO - Biological Trace Element Research
JF - Biological Trace Element Research
IS - 7
ER -