Latitudinal exposure to DDTs, HCB, PCBs, PBDEs and DP in giant petrels ( Macronectes spp.) across the Southern Ocean

Roscales, José L.; González‐Solís, Jacob; Zango, Laura; Ryan, Peter G.; Jimenez, Begotia

doi:10.1016/j.envres.2016.04.005

Cited by 35 publications

(21 citation statements)

References 48 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, large-scale trace element and POPs distributions in the World Ocean are poorly known, especially in the Southern Hemisphere (SCOR Group, 2007), and seabirds could help in understanding potential geographical differences in their bioavailability. Seabird species with large distributions are particularly useful as bioindicators, because the comparison of distinct populations allow inferring geographical differences in contamination of food webs with a limited phylogenetic bias (Brasso et al, 2015;Roscales et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

“…Namely, feather Hg concentrations of penguin and albatross species from distinct sites in the Southern Hemisphere indicated potential "hot-spots" of Hg bioavailability, such as Staten Island in the southern Atlantic Ocean (Brasso et al, 2015) or the subtropical waters of the Indian Ocean . In addition, POP exposure of Southern Ocean top predators had different latitudinal patterns in the Southern Atlantic (increasing northward, Roscales et al, 2016) and Indian Oceans (increasing southward, Carravieri et al, 2014). Most of these studies have been conducted in adult seabirds (but see Blévin et al, 2013;Colabuono et al, 2016), where the interpretation of tissue contaminant concentrations may be blurred by confounding factors such as exposure over different temporal and spatial scales (during the breeding vs wintering season) (Bourgeon et al, 2013;Fort et al, 2014), thus limiting our capacity to effectively infer geographical differences in exposure.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

From Antarctica to the subtropics: Contrasted geographical concentrations of selenium, mercury, and persistent organic pollutants in skua chicks (Catharacta spp.)

Carravieri

Cherel

Brault‐Favrou

et al. 2017

Environmental Pollution

View full text Add to dashboard Cite

Seabirds integrate bioaccumulative contaminants via food intake and have revealed geographical trends of contamination in a variety of ecosystems. Pre-fledging seabird chicks are particularly interesting as bioindicators of chemical contamination, because concentrations in their tissues reflect primarily dietary sources from the local environment. Here we measured 14 trace elements and 18 persistent organic pollutants (POPs) in blood of chicks of skuas that breed in four sites encompassing a large latitudinal range within the southern Indian Ocean, from Antarctica (Adélie Land, south polar skua Catharacta maccormicki), through subantarctic areas (Crozet and Kerguelen Islands, brown skua C. lonnbergi), to the subtropics (Amsterdam Island, C. lonnbergi). Stables isotopes of carbon (δC, feeding habitat) and nitrogen (δN, trophic position) were also measured to control for the influence of feeding habits on contaminant burdens. Concentrations of mercury (Hg) and selenium (Se) were very high at all the four sites, with Amsterdam birds having the highest concentrations ever reported in chicks worldwide (4.0 ± 0.8 and 646 ± 123 μg g dry weight, respectively). Blood Hg concentrations showed a clear latitudinal pattern, increasing from chicks in Antarctica to chicks in the subantarctic and subtropical islands. Interestingly, blood Se concentrations showed similar between-population differences to Hg, suggesting its involvement in protective mechanisms against Hg toxicity. Chicks' POPs pattern was largely dominated by organochlorine pesticides, in particular DDT metabolites and hexachlorobenzene (HCB). Skua chicks from subantarctic islands presented high concentrations and diversity of POPs. By contrast, chicks from the Antarctic site overall had the lowest concentrations and diversity of both metallic and organic contaminants, with the exception of HCB and arsenic. Skua populations from these sites, being naturally exposed to different quantities of contaminants, are potentially good models for testing toxic effects in developing chicks in the wild.

show abstract

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

From Antarctica to the subtropics: Contrasted geographical concentrations of selenium, mercury, and persistent organic pollutants in skua chicks (Catharacta spp.)

Carravieri

Cherel

Brault‐Favrou

et al. 2017

Environmental Pollution

View full text Add to dashboard Cite

show abstract

“…Our samples from Marion Island were collected in April-May, whereas those from Gough Island were collected in September-October. April is the end of the chick-rearing period for southern giant petrels (Roscales et al 2016). Therefore, a greater density of birds is expected in that period, including many immunologically naïve juveniles, who probably have a greater risk of infection, leading to a greater infectious pressure.…”

Section: Discussionmentioning

confidence: 99%

“…The samples used in this study were collected at one of three locations ( Fig. 1): Byers Peninsula (62°38'S, 61°50'W, Antarctic) on Livingston Island, one of the South Shetland Islands; Marion Island (46°54'S, 37°44'E, sub-Antarctic), which is the largest of the two Prince Edward Islands; and Gough Island (40°20'S, 9°55'W, south Atlantic), which forms part of the Tristan da Cunha archipelago and is the most northern breeding site of giant petrels (Roscales et al 2016). Samples at Livingston Island were collected in January 2009, those at Marion Island in April-May 2011 and those at Gough Island in September-October 2009 (Table I).…”

Section: Collection Of Samplesmentioning

confidence: 99%

“…Samples at Livingston Island were collected in January 2009, those at Marion Island in April-May 2011 and those at Gough Island in September-October 2009 (Table I). Samples were taken in the field by hand from live un-anaesthetized animals, which were released immediately after sampling (see further details of collection in Roscales et al 2016). Blood was taken from the brachial vein, centrifuged for 10 min at 10 000 rpm and serum was frozen until analysis.…”

Section: Collection Of Samplesmentioning

confidence: 99%

See 1 more Smart Citation

Serological and molecular surveys of influenza A viruses in Antarctic and sub-Antarctic wild birds

et al. 2019

Self Cite

View full text Add to dashboard Cite

To evaluate how avian influenza virus (AIV) circulates among the avifauna of the Antarctic and sub-Antarctic islands, we surveyed 14 species of birds from Marion, Livingston and Gough islands. A competitive enzyme-linked immunosorbent assay was carried out on the sera of 147 birds. Quantitative reverse transcription polymerase chain reaction was used to detect the AIV genome from 113 oropharyngeal and 122 cloacal swabs from these birds. The overall seroprevalence to AIV infection was 4.8%, with the only positive results coming from brown skuas (Catharacta antarctica) (4 out of 18, 22%) and southern giant petrels (Macronectes giganteus) (3 out of 24, 13%). Avian influenza virus antibodies were detected in birds sampled from Marion and Gough islands, with a higher seroprevalence on Marion Island (P = 0.014) and a risk ratio of 11.29 (95% confidence interval: 1.40–91.28) compared to Gough Island. The AIV genome was not detected in any of the birds sampled. These results confirm that AIV strains are uncommon among Antarctic and sub-Antarctic predatory seabirds, but they may suggest that scavenging seabirds are the main avian reservoirs and spreaders of this virus in the Southern Ocean. Further studies are necessary to determine the precise role of these species in the epidemiology of AIV.

show abstract

Miniaturised sample preparation method for the multiresidual determination of regulated organohalogenated pollutants and related compounds in wild bird eggs

et al. 2017

View full text Add to dashboard Cite

A simplified, miniaturised matrix solid-phase dispersion (MSPD)-based method allowing the simultaneous extraction and purification of contaminants belonging to selected families of regulated persistent organic pollutants (POPs), i.e. polychlorinated biphenyls (PCBs), organochlorine pesticides (OCPs) and penta- to octa-polybrominated diphenyl ethers (PBDEs), and related contaminants of emerging concern, such as deca-BDE and Dechlorane Plus (DP), has been proposed. Wild bird eggs were used as biotic fat-containing model matrices. Once optimised, the procedure allowed sample preparation to be accomplished within 30 min, in a single step, and with minimal sample and reagent consumption and waste generation. These features contributed to speeding up and greening the analytical process as compared to the large-scale multistep procedures for these types of analyses. The method was combined with gas chromatography-quadrupole mass spectrometry (GC-qMS) for PCB and OCP analysis and with GC-negative ion chemical ionisation-quadrupole mass spectrometry (NCI-qMS) for PBDE and DP determination. The complete analytical method provided satisfactory recoveries of the target compounds (above 83% for all analytes, except for PBDE 209, 63%), although as small an amount of sample as 0.300 g was used. The repeatability of the complete procedure was less than 16% (with the only exception for PCB 153, which looked to be affected by an interference). The limits of detection were in all cases lower than 34 pg g dry weight (as calculated for real samples), demonstrating the feasibility of the proposed procedure for accurate determination of the target compounds in biological samples. The proposed procedure was applied to the analysis of the target POPs in unhatched eggs of wild bird species. Graphical abstract Scheme of the miniaturised methodology proposed for environmental monitoring of POPs and related compounds in wild bird eggs.

show abstract

Latitudinal exposure to DDTs, HCB, PCBs, PBDEs and DP in giant petrels ( Macronectes spp.) across the Southern Ocean

Cited by 35 publications

References 48 publications

From Antarctica to the subtropics: Contrasted geographical concentrations of selenium, mercury, and persistent organic pollutants in skua chicks (Catharacta spp.)

From Antarctica to the subtropics: Contrasted geographical concentrations of selenium, mercury, and persistent organic pollutants in skua chicks (Catharacta spp.)

Serological and molecular surveys of influenza A viruses in Antarctic and sub-Antarctic wild birds

Miniaturised sample preparation method for the multiresidual determination of regulated organohalogenated pollutants and related compounds in wild bird eggs

Contact Info

Product

Resources

About