Instituto Politécnico Nacional, Centro Interdisciplinario de Ciencias Marinas, Av. I.P.N. s/n, Colonia Playa Palo de Santa Rita, Apartado Postal 592, La Paz, 23000, Baja California Sur, Mexico.
Instituto de Investigacións Mariñas (IIM-CSIC), Vigo, Galicia, Spain.
Environ Sci Pollut Res Int. 2022 Sep;29(41):61623-61629. doi: 10.1007/s11356-021-17390-w. Epub 2021 Nov 13.
During gestation, essential and non-essential trace elements are transferred from the pregnant females to embryos. This study aimed to determine and compare the concentrations of seven essential trace elements (Fe, Zn, Se, Cu, Mn, Cr, Co) and six non-essential trace elements (As, Cd, V, U, Tl, Ag) in the muscle and the liver of a Munk's pygmy devil ray pregnant female, Mobula munkiana, and its embryo. Transfer evidence of essential and non-essential trace elements was detected in M. munkiana tissues. Arsenic was found in elevated concentrations in the pregnant female and the embryo tissues. Elevated levels of Cd, V, U, and Ag were found in the pregnant female liver, but were minimal in the embryo tissue. This is the first study to investigate maternal transfer of essential and non-essential trace elements in these species and their reproductive strategy.
在妊娠期间，必需和非必需微量元素从母体转移到胚胎中。本研究旨在确定和比较怀孕的芒氏魟（Mobula munkiana）母体及其胚胎肌肉和肝脏中七种必需微量元素（Fe、Zn、Se、Cu、Mn、Cr、Co）和六种非必需微量元素（As、Cd、V、U、Tl、Ag）的浓度。在芒氏魟组织中检测到必需和非必需微量元素的转移证据。在母体和胚胎组织中均发现砷的浓度升高。在母体肝脏中发现 Cd、V、U 和 Ag 水平升高，但在胚胎组织中则很少。这是首次研究这些物种的母体转移必需和非必需微量元素及其生殖策略的研究。
