Body Burdens of Persistent Halogenated Compounds during Different Development Stages of Anadromous Brown Trout (Salmo trutta)

Abstract

Polychlorinated biphenyls (PCBs), DDTs, and polybrominated diphenyl ethers (PBDEs) were followed through the five life stages of a wild population of anadromous brown trout and related to variations in lipid content and exposure situations. Anadromous brown trout exhibits great variations in lipid content during its life cycle in the freshwater and marine environments. The results indicated substantial differences in PBDE and organochlorine exposure, with apparently more recent sources of PBDEs in the freshwater environment relative to the marine environment. Lipid and contaminant transfer were not always identical: The concentrations of PCBs, DDTs, and PBDEs (ng/g lipid weight) were about 15 times lower in the eggs compared to the muscle of their mother (e.g., 823 ng PCB/g Iw vs. 12,565 ng PCB/g lw, respectively). During the starving period from maiden to spawning trout the contaminant load increased by a higher factor than the lipid use. The data suggest a decoupling between lipid content and organohalogen concentrations for anadromous brown trout, which may contribute positively to reduce any potential negative effects of the transferred contaminants on eggs and fry.

Bioaccumulation of polybrominated diphenyl ethers (PBDEs) in flounder (Platichthys flesus) in the southern Baltic Sea

“…These partition coefficient values did not corroborate the inter-tissue lipid partitioning paradigm i.e., equal lipid-based concentrations which was especially evidenced by the L/G and M/G values. Similarly, large differences in lipid-based SPBDE levels were observed between spawners and eggs of brown trout, Salmo trutta, by Svendsen et al (2007). In brown trout the S 11 PBDE L/G coefficient was much higher (15.4) than that of the present study.…”

“…In brown trout the S 11 PBDE L/G coefficient was much higher (15.4) than that of the present study. Svendsen et al (2007) hypothesized that the considerably lower lipid-based PBDE concentrations in eggs might result from quantitative decoupling of contaminant transport from lipid transport. The L/G and M/G partition coefficients for individual congeners being in the range of 1.4e5.8 and 1.1e3.8, respectively, suggested that distribution into gonads' lipid compartment was hampered for all congeners but BDE-153 for which the L/G coefficient was slightly <1.…”

Polychlorinated biphenyls, organochlorine pesticides and polycyclic aromatic hydrocarbons in a one-off global survey of bivalves

“…SPCB and SDDT seemed to be highly correlated in the Galathea 3 samples (R 2 ¼ 0.78; p < 0.05), which has also been shown in other studies on organochlorines. 27,28 However, the correlation changes considerably if the samples from Boston and Sydney are removed and decreases to R 2 ¼ 0.37, while still being significant (p < 0.05). As already indicated above, the samples varied in their PCB/DDT ratio.…”

Influence of the rehabilitation of injured loggerhead turtles (Caretta caretta) on their blood levels of environmental organic pollutants and elements

“…This lowering effect was much more prominent in the subset of turtles admitted to the center with signs of severe emaciation. Although some studies have shown that contaminant burdens are higher in animals that have lost body condition, either through food deprivation or through an increase in energetic expenditure (Antunes et al, 2007;Kerambrun et al, 2013;Svendsen et al, 2007), as far as we know, this is the first study that shows a reduction of plasma levels of organic contaminants after recovery to a normal physiological condition in sea turtles. We attribute such reduction to a redistribution of these contaminants into the superficial peripheral compartment (adipose tissue) after receiving veterinary assistance and a more or less brief period of normal feeding.…”