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. 2019 Jun 29;24(13):2401.
doi: 10.3390/molecules24132401.

Metal Concentration in Muscle and Digestive Gland of Common Octopus (Octopus vulgaris) from Two Coastal Site in Southern Tyrrhenian Sea (Italy)

Andrea Ariano  1 , Raffaele Marrone  2 , Rebecca Andreini  3 , Giorgio Smaldone  4 , Salvatore Velotto  1 , Serena Montagnaro  5 , Aniello Anastasio  2 , Lorella Severino  1
Affiliations

Metal Concentration in Muscle and Digestive Gland of Common Octopus (Octopus vulgaris) from Two Coastal Site in Southern Tyrrhenian Sea (Italy)

Andrea Ariano et al. Molecules. .

Abstract

Octopus vulgaris constitute an important part of most suitable marine resources for human consumption, however, they can represent a source in chemical contaminants intake such as heavy metals. In this scenario, the aim of the study was the evaluation of the concentration of lead (Pb), cadmium (Cd) and mercury (Hg) in the muscle and digestive gland of octopus caught from two different locations along Campania coast (Castellammare di Stabia and Napoli) and the estimation of their weekly human intake derived from the ingestion of octopus. Analysing 38 samples showed a higher concentration of Pb in the muscle of octopus in Castellammare di Stabia than in Napoli. No statistical differences were reported for Cd, Pb and Hg concentrations in the digestive gland of octopus between two sampling sites. Differences were observed between the two tissue types, with a higher level of Cd and Pb observed in the digestive gland compared with the muscle. Noteworthy, the consumption of muscle from Castellammare di Stabia could increase Pb intake in heavy consumers of local octopus. In conclusion, the present work determines that it is important to improve strategies to minimize environmental pollution sources in these areas.

Keywords: cadmium; cephalopods; lead; mercury.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Mean concentration (µg g−1 wet weigth) ± SEM of Pb, Cd and Hg in O. vulgaris muscle and digestive gland from Napoli and Castellammare di Stabia. Probability levels for significant differences from sampling sites: p < 0.001(***).
Figure 2
Figure 2
Concentration of Pb, Cd and Hg in O. vulgaris depending on (A) organ type: muscle versus digestive gland; (B) sampling sites: Napoli versus Castellammare di Stabia. Vertical bars represent average concentration (µg g−1 wet weigth) ± SEM. Probability levels for significant differences: p < 0.001(***); p < 0.01 (**).
Figure 3
Figure 3
Map showing locations of the sampling sites: Napoli (site A) and Castellammare di Stabia (site B).
See this image and copyright information in PMC

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