Abstract
Concentrations of the bulk and trace elements were determined in male and female gonads, gametes (sperm and eggs), and larvae (trochophores) of black and brown morphs of the Mediterranean mussel Mytilus galloprovincialis using energy dispersive X-ray spectroscopy and inductively coupled plasma mass spectrometry. The mollusks were collected in spring 2019 on a mussel-and-oyster farm (Black Sea, Crimea, Sevastopol, Karantinnaya Bay). In the male and female gonads of black and brown morphs, no statistically significant differences were detected in concentrations of the bulk structural elements (C, N, O, P, S), while in gametes and trochophores, these differences were significant. Trace elemental analysis revealed that in the female gonads of both black and brown morphs, Cu, Fe, and As were dominant, however in brown morphs, concentrations of these elements were significantly lower than in black mussels. Zn and Se concentrations in the gonads of black morphs were significantly higher than in brown mussels. Most of the statistically significant differences were found between trochophores and eggs of black vs. brown morphs. These data show that the two M. galloprovincialis morphs differ in their elemental composition.
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