Marine Halogenated Natural Products of Environmental Relevance

Vetter, Walter

doi:10.1007/978-0-387-32964-2_1

Cited by 79 publications

(103 citation statements)

References 136 publications

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“…MeO-PBDEs have probably a natural origin, being formed by sponges or algae (Dorneles et al, 2015;Vetter, 2006). Currently, there are is a lack of literature on MeO-PBDE concentrations in krill, the dominant prey species of whales from the Southern Hemisphere (Dorneles et al, 2015).…”

Section: Contamination Profile Of Humpback Whales Off La Reunion Islandmentioning

confidence: 99%

Linking pollutant exposure of humpback whales breeding in the Indian Ocean to their feeding habits and feeding areas off Antarctica

Das

Malarvannan

Dirtu

et al. 2017

Environmental Pollution

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a b s t r a c tHumpback whales, Megaptera novaeangliae, breeding off la Reunion Island (Indian Ocean) undergo largescale seasonal migrations between summer feeding grounds near Antarctica and their reproductive winter grounds in the Indian Ocean. The main scope of the current study was to investigate chemical exposure of humpback whales breeding in the Indian Ocean by providing the first published data on this breeding stock concerning persistent organic pollutants (POPs), namely polychlorinated biphenyls (PCBs), hexachlorobenzene (HCB), hexachlorocyclohexanes (HCHs), DDT and its metabolites (DDTs), chlordane compounds (CHLs), polybrominated diphenyl ethers (PBDEs), and methoxylated PBDEs (MeOPBDEs). Analyses of stable isotopes d 13 C and d 15 N in skin resulted in further insight in their feeding ecology, which was in agreement with a diet focused mainly on low trophic level prey species, such as krill from Antarctica. POPs were measured in all humpback whales in the order of HCB > DDTs > CHLs > HCHs > PCBs > PBDEs > MeO-BDEs. HCB (median: 24 ng g À1 lw) and DDTs (median: 7.7 ng g À1 lw) were the predominant compounds in all whale biopsies. Among DDT compounds, p,p 0 -DDE was the major organohalogenated pollutant, reflecting its long-term accumulation in humpback whales. Significantly lower concentrations of HCB and DDTs were found in females than in males (p < 0.001). Other compounds were similar between the two genders (p > 0.05). Differences in the HCB and DDTs suggested gender-specific transfer of some compounds to the offspring. POP concentrations were lower than previously reported results for humpback whales sampled near the Antarctic Peninsula, suggesting potential influence of their nutritional status and may indicate different exposures of the whales according to their feeding zones. Further investigations are required to assess exposure of southern humpback whales throughout their feeding zones.

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Section: Contamination Profile Of Humpback Whales Off La Reunion Islandmentioning

confidence: 99%

Linking pollutant exposure of humpback whales breeding in the Indian Ocean to their feeding habits and feeding areas off Antarctica

Das

Malarvannan

Dirtu

et al. 2017

Environmental Pollution

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“…Similarly, higher concentrations of these compounds were determined in female Fraser's dolphin than in female Guiana dolphins (p = 0.006, T = −3.44). Vetter (2006) raised the hypothesis that higher contributions of 2′-MeO-BDE 68 are caused by sponges or associated organisms, whereas higher proportions of 6-MeO-BDE 47 are an indication of the presence of algae or associated organisms. Therefore, the ratio between these two naturally-produced organobrominated compounds (2′-MeO-BDE 68/6-MeO-BDE 47) was calculated for each individual in the present study.…”

Section: Meo-pbdes (2′-meo-bde 68 and 6-meo-bde 47)mentioning

confidence: 99%

“…Significant differences were observed while comparing ratios in two distinct scenarios, i.e., between male Guiana dolphins and male Atlantic spotted dolphins (higher values in the Atlantic spotted dolphins; p =0.007, T = −3.07), as well as between female Guiana dolphins and Fraser's dolphins of the same gender (higher values in the Guiana dolphins; p = 0.004, U = 1). According to Vetter (2006), this implies that CS delphinids, such as Atlantic spotted dolphins, would be receiving MeO-BDEs predominantly from sponges, or associated organisms. MeO-PBDEs have been isolated from sponges of the genus Dysidea (Sharma and Vig, 1972) and the presence of these organisms has already been reported in the "Região dos Lagos" area (Oigman-Pszczol et al, 2004), in Rio de Janeiro state (Fig.…”

Section: Meo-pbdes (2′-meo-bde 68 and 6-meo-bde 47)mentioning

confidence: 99%

“…MeO-PBDEs have been reported as having natural origin (Teuten et al, 2005;Teuten and Reddy, 2007), being formed by sponges (Vetter et al, 2002) or algae (Malmvärn et al, 2005). MeO-PBDEs have been detected in marine mammals at concentrations comparable to halogenated organic compounds of anthropogenic origin (Vetter et al, 2002;Vetter, 2006).…”

Section: Introductionmentioning

confidence: 99%

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Anthropogenic and naturally-produced organobrominated compounds in marine mammals from Brazil

Dorneles

Lailson‐Brito

Dirtu

et al. 2010

Environment International

107

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Liver samples from 51 cetaceans, comprising 10 species, stranded between 1994 and 2006 in a highly industrialized and urbanized region in Southeast Brazil, were analyzed for polybrominated diphenyl ethers (PBDEs) and methoxylated-PBDEs (MeO-PBDEs). A concentration range of PBDEs (3-5960 ng/g lw) similar to that observed in Northern Hemisphere dolphins was found. MeO-PBDE concentrations in continental shelf (CS) dolphins from Brazil are among the highest detected to date in cetaceans (up to 250 µg/g lw). Higher ΣMeO-PBDE concentrations were measured in CS and oceanic dolphins than in estuarine dolphins. The ΣPBDE/ΣMeO-PBDE ratio varied significantly ranging from a mean value of 7.12 to 0.08 and 0.01 for estuarine, CS and oceanic species, respectively. A positive correlation was observed between ΣPBDE and year of stranding of male estuarine dolphins (Sotalia guianensis), which suggests temporal variation in the exposure. Placental transfer of organobrominated compounds was also evidenced in S. guianensis.

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“…However, little light was put on the presence of more unusual organohalogen compounds in this area and new types of anthropogenic POPs (Paasivirta 2000) as well as halogenated natural products (HNPs) (Vetter 2006). HNPs are produced in a huge variety in the marine environment (Gribble 2010).…”

Section: Introductionmentioning

confidence: 99%

Thorough analysis of polyhalogenated compounds in ray liver samples off the coast of Rio de Janeiro, Brazil

Rosenfelder

Lehnert

Kaffarnik

et al. 2011

Environ Sci Pollut Res

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Marine Halogenated Natural Products of Environmental Relevance

Cited by 79 publications

References 136 publications

Linking pollutant exposure of humpback whales breeding in the Indian Ocean to their feeding habits and feeding areas off Antarctica

Linking pollutant exposure of humpback whales breeding in the Indian Ocean to their feeding habits and feeding areas off Antarctica

Anthropogenic and naturally-produced organobrominated compounds in marine mammals from Brazil

Thorough analysis of polyhalogenated compounds in ray liver samples off the coast of Rio de Janeiro, Brazil

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