Swallows as Indicators of Environmental Pollution of the Rio Grande/Rio Bravo Basin: Are Persistent Organic Pollutants a Concern?

Mora, Miguel A.; Sericano, José L.; Baxter, Catherine

doi:10.1007/s00244-011-9718-3

Cited by 6 publications

(2 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Only minor inconsistencies are expected to have occurred in the statistical results as a result of the varying number of BDE congeners (11 to 18) used to calculate the ΣBDE levels. Letters below each bar refer to the original study: A - Henny et al, 2011;B -Klosterhaus et al, 2012;C -Mora et al, 2012;E -Gentes et al, 2012;F -Morales et al, 2012;G -Mo et al, 2012;H -Zhang et al, 2011b;I -Wang et al, 2012.…”

Section: Figure Captionsmentioning

confidence: 99%

Levels and trends of PBDEs and HBCDs in the global environment: Status at the end of 2012

Law

Harrad

Herzke

et al. 2014

Environment International

363

164

View full text Add to dashboard Cite

In this paper, we have compiled and reviewed the most recent literature, published in print or online from January 2010 to December 2012, relating to the human exposure, environmental distribution, behaviour, fate and concentration time trends of polybrominated diphenyl ether (PBDE) and hexabromocyclododecane (HBCD) flame retardants, in order to establish their current trends and priorities for future study. More data are now becoming available for remote areas not previously studied, Indian Ocean islands, for example. Decreasing time trends for penta-mix PBDE congeners were seen for soils in northern Europe, sewage sludge in Sweden and the USA, carp from a US river, trout from three of the Great Lakes and in Arctic and UK marine mammals and many birds, but increasing time trends continue in polar bears and some birds at high trophic levels in northern Europe. This may be partially a result of the time delay inherent in long-range atmospheric transport processes. In general, concentrations of BDE209 (the major component of the deca-mix PBDE product) are continuing to increase. Of major concern is the possible/likely debromination of the large reservoir of BDE209 in soils and sediments worldwide, to yield lower brominated congeners which are both more mobile and more toxic, and we have compiled the most recent evidence for the occurrence of this degradation process. Numerous studies reported here reinforce the importance of this future concern. Time trends for HBCDs are mixed, with both increases and decreases evident in different matrices and locations and, notably, with increasing occurrence in birds of prey. Temporal trends for both PBDEs and HBCD in Asia are unclear currently. A knowledge gap has been noted in relation to metabolism and/or debromination of BDE209 and HBCD in birds. Further monitoring of human exposure and environmental contamination in areas of e-waste recycling, particularly in Asia and Africa, is warranted. More data on temporal trends of BDE and HBCD concentrations in a variety of matrices and locations are needed before the current status of these compounds can be fully assessed, and the impact of regulation and changing usage patterns among different flame retardants determined.

show abstract

Section: Figure Captionsmentioning

confidence: 99%

Levels and trends of PBDEs and HBCDs in the global environment: Status at the end of 2012

Law

Harrad

Herzke

et al. 2014

Environment International

363

164

View full text Add to dashboard Cite

show abstract

“…4.1% lipid) were measured in long‐tailed shrike ( Lanius schach ) muscle, and ΣPBDEs up to 15,000 ng/g lw (∼465 ng/g ww at avg 3.1% lipid) were measured in oriental magpie‐robin ( Copsychus saularis ) muscle (Sun et al, ). Cliff swallows ( Petrochelidon pyrrhonota ) and Carolina wrens ( Thryothorus ludovicianus ) collected in the United States had ΣPBDE concentrations up to 385 ng/g ww (Mora et al, ), and 4207 ng/g dw (∼1300 ng/g ww at avg. 69.1% moisture) (Maldonado et al, ), respectively.…”

Section: Resultsmentioning

confidence: 99%

Embryonic exposure to environmentally relevant concentrations of a brominated flame retardant reduces the size of song‐control nuclei in a songbird

Eng

Winter

Elliott

et al. 2018

Developmental Neurobiology

View full text Add to dashboard Cite

Environmental contaminants have the potential to act as developmental stressors and impair development of song and the brain of songbirds, but they have been largely unstudied in this context. 2,2',4,4',5-Pentabromodiphenyl ether (BDE-99) is a brominated flame retardant congener that has demonstrated endocrine disrupting effects, and has pervaded the global environment. We assessed the effects of in ovo exposure to environmentally relevant levels of BDE-99 on the neuroanatomy of the song-control system in a model songbird species, the zebra finch (Taeniopygia guttata). Embryos were exposed via egg injection to a vehicle control (DMSO), 10, 100, or 1000 ng BDE-99/g egg on the day the egg was laid. Chicks were raised to sexual maturity to investigate long-term effects of BDE-99 on the adult male brain. Three key song-control nuclei (Area X, HVC, RA) all showed a dose-dependent trend toward decreasing volume as BDE-99 concentration increased, and birds exposed to 1000 ng/g in ovo BDE-99 had significantly smaller song-control nuclei volume compared to control birds. High environmental concentrations of BDE-99 in avian tissues can be within that range and thus could affect development of the song-control system in birds, and potentially other processes. We previously found that BDE-99 exposure during the nestling period had no effect of on the song-control system, although it did have significant effects on some behaviural endpoints. Taken together, these results suggest that exposure to polybrominated diphenyl ether (PBDEs) during critical developmental windows can significantly alter neurological development. © 2018 Wiley Periodicals, Inc. Develop Neurobiol, 2018.

show abstract

Seasonal Differences in Contaminant Accumulation in Neotropical Migrant and Resident Songbirds

Maldonado

Mora

Sericano

2016

Arch Environ Contam Toxicol

View full text Add to dashboard Cite

For many years, it has been hypothesized that Neotropical migrants breeding in the United States and Canada accumulate organochlorine pesticides (OCPs) while on their wintering grounds in Latin America. We investigated the seasonal accumulation of persistent organic pollutant (POPs) in migrant and resident passerines in Texas, Yucatán, and Costa Rica collected during the fall, winter, and spring from 2011 to 2013. A total of 153 birds were collected, and all contained detectable levels of polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), and OCPs with dichlorodiphenyldichloroethylene (DDE) being the most predominant pesticide. OCPs and PCBs were the predominant contaminants, accounting for ≥80 % of the total POPs burden, whereas PBDEs accounted for ≤16 %. Only spring migrants from Texas had significantly greater DDE concentrations (64.6 ng/g dry weight [dw]) than migrants collected in Costa Rica (23.2 ng/g dw). Resident birds in Texas had significantly greater levels of DDE (121 ng/g dw) and ΣPBDEs (34.8 ng/g dw) compared with residents in Yucatán and Costa Rica. For ΣPCBs, resident birds from Costa Rica had significantly lower concentrations (9.60 ng/g dw) compared with their migrant counterparts (43.7 ng/g dw) and residents from Texas (48.3 ng/g dw) and the Yucatán (32.1 ng/g dw). Migrant and resident passerines had similar congener profiles for PCBs and PBDEs suggesting similar exposure and retention of these contaminants. No significant accumulation of DDE was observed in migrants while on their wintering grounds. Relatively high concentrations of PBDEs in resident birds from Costa Rica warrant future studies of PBDE contamination in Latin America.

show abstract

Swallows as Indicators of Environmental Pollution of the Rio Grande/Rio Bravo Basin: Are Persistent Organic Pollutants a Concern?

Cited by 6 publications

References 35 publications

Levels and trends of PBDEs and HBCDs in the global environment: Status at the end of 2012

Levels and trends of PBDEs and HBCDs in the global environment: Status at the end of 2012

Embryonic exposure to environmentally relevant concentrations of a brominated flame retardant reduces the size of song‐control nuclei in a songbird

Seasonal Differences in Contaminant Accumulation in Neotropical Migrant and Resident Songbirds

Contact Info

Product

Resources

About