Mercury and Cadmium Concentrations in Muscle Tissue of the Blue Shark (Prionace glauca) in the Central Eastern Pacific Ocean
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,...
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Veröffentlicht in: | Biological trace element research 2022-07, Vol.200 (7), p.3400-3411 |
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Format: | Artikel |
Sprache: | eng |
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Zusammenfassung: | 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
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ISSN: | 0163-4984 1559-0720 |
DOI: | 10.1007/s12011-021-02932-7 |