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Mercury bioaccumulation in offshore ...

Sinkus, Wiley.

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Mercury bioaccumulation in offshore reef species from waters of the Southeastern US.

Record Type:	Electronic resources : Monograph/item
Title/Author:	Mercury bioaccumulation in offshore reef species from waters of the Southeastern US./
Author:	Sinkus, Wiley.
Published:	Ann Arbor : ProQuest Dissertations & Theses, : 2016,
Description:	77 p.
Notes:	Source: Masters Abstracts International, Volume: 55-05.
Contained By:	Masters Abstracts International55-05(E).
Subject:	Toxicology. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=10116191
ISBN:	9781339776590

Mercury bioaccumulation in offshore reef species from waters of the Southeastern US.
Sinkus, Wiley.

Mercury bioaccumulation in offshore reef species from waters of the Southeastern US. - Ann Arbor : ProQuest Dissertations & Theses, 2016 - 77 p.

Source: Masters Abstracts International, Volume: 55-05.

Thesis (M.S.)--College of Charleston, 2016.

This item is not available from ProQuest Dissertations & Theses.

Mercury (Hg) concentrations and stable isotopic ratios of nitrogen (delta 15N) and carbon (delta13C) were measured to assess differences in Hg bioaccumulation in six predatory fish species ( Mycteroperca microlepis, M. phenax, Epinephelus morio, Lutjanus campechanus, Caulolatilus microps, and Serioli dumerili) of high commercial and recreational importance in Atlantic waters of the Southeastern US (ASEUS), Strong positive relationships existed between Hg and length, weight, and age, for all of the species except C. microps and S. dumerili . Intraspecific Hg concentrations also strongly correlated with a proxy for relative trophic position (delta15N), for all species except E. morio and a proxy for food source (delta13C) for only M. phenax, L. campechanus, and S. dumerili. Comparisons of mean delta15N and delta 13C between species and their impact on mean Hg concentration were inconclusive. This study is the first to report Hg concentrations for C. microps, having relatively high mean concentrations (0.38 +/- 0.17 ppm). Mercury accumulation rates varied between species, ranging from 0.019 ppmyr-1 for C. microps to 0.052 ppmyr-1 for M. microlepis. Measured species had moderate Hg concentrations for predatory fishes, with 59% of all samples and mean concentrations of M. microlepis, M. phenax, and L. campechanus all being below 0.3 ppm (US Environmental Protection Agency screening level). Mercury accumulation was significantly different between sexes for L. campechanus, and the hermaphroditic species M. microlepis, M. phenax, and E. morio. The current study provides additional data for an under sampled region (ASEUS), explores how feeding ecology impacts Hg uptake in commonly co-occurring fishes, and raises questions of the importance of sex and reproduction in Hg accumulation for marine fishes.

ISBN: 9781339776590Subjects--Topical Terms:

556884
Toxicology.

Mercury bioaccumulation in offshore reef species from waters of the Southeastern US.
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500 $a Source: Masters Abstracts International, Volume: 55-05.
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506 $a This item is not available from ProQuest Dissertations & Theses.
520 $a Mercury (Hg) concentrations and stable isotopic ratios of nitrogen (delta 15N) and carbon (delta13C) were measured to assess differences in Hg bioaccumulation in six predatory fish species ( Mycteroperca microlepis, M. phenax, Epinephelus morio, Lutjanus campechanus, Caulolatilus microps, and Serioli dumerili) of high commercial and recreational importance in Atlantic waters of the Southeastern US (ASEUS), Strong positive relationships existed between Hg and length, weight, and age, for all of the species except C. microps and S. dumerili . Intraspecific Hg concentrations also strongly correlated with a proxy for relative trophic position (delta15N), for all species except E. morio and a proxy for food source (delta13C) for only M. phenax, L. campechanus, and S. dumerili. Comparisons of mean delta15N and delta 13C between species and their impact on mean Hg concentration were inconclusive. This study is the first to report Hg concentrations for C. microps, having relatively high mean concentrations (0.38 +/- 0.17 ppm). Mercury accumulation rates varied between species, ranging from 0.019 ppmyr-1 for C. microps to 0.052 ppmyr-1 for M. microlepis. Measured species had moderate Hg concentrations for predatory fishes, with 59% of all samples and mean concentrations of M. microlepis, M. phenax, and L. campechanus all being below 0.3 ppm (US Environmental Protection Agency screening level). Mercury accumulation was significantly different between sexes for L. campechanus, and the hermaphroditic species M. microlepis, M. phenax, and E. morio. The current study provides additional data for an under sampled region (ASEUS), explores how feeding ecology impacts Hg uptake in commonly co-occurring fishes, and raises questions of the importance of sex and reproduction in Hg accumulation for marine fishes.
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