Maternally transferred mercury in wild largemouth bass, Micropterus salmoides.

Autor: Sackett DK; Department of Biology, North Carolina State University, PO Box 7617, Raleigh, NC 27695-7617, USA. danas4@hawaii.edu, Aday DD, Rice JA, Cope WG
Jazyk: angličtina
Zdroj: Environmental pollution (Barking, Essex : 1987) [Environ Pollut] 2013 Jul; Vol. 178, pp. 493-7. Date of Electronic Publication: 2013 Apr 15.
DOI: 10.1016/j.envpol.2013.03.046
Abstrakt: Maternal transfer of mercury in fish represents a potential route of elimination for adult females and a risk to developing embryos. To better quantify maternal transfer, we measured Hg in female largemouth bass (Micropterus salmoides) muscle and eggs from six waterbodies. Mercury in eggs from two waterbodies exceeded a US federal screening level (0.3 μg g(-1)) and was likely high enough to cause adverse reproductive effects. We found a curvilinear relationship between female and egg Hg. Fish with <0.37 μg g(-1) Hg had low levels of Hg in eggs; those with Hg >0.37 μg g(-1) showed a direct relationship between egg and muscle Hg (Log10 egg Hg = -1.03 + 1.18 * log10 muscle tissue Hg + 2.15 * (log10 muscle tissue Hg + 0.35)(2)). We also report higher maternal transfer (0.2-13.2%) and higher ratios of egg to muscle tissue Hg (4-52%) and egg to whole body Hg concentrations (7-116%) than previously observed for teleost fish.
(Published by Elsevier Ltd.)
Databáze: MEDLINE
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