Organochlorine pesticides, lead, and mercury in northern bobwhite (<i>Colinus virginianus</i>) and scaled quail (<i>Callipepla squamata</i>) from the rolling plains ecoregion of Texas and Oklahoma

Baxter, Catherine; Pappas, S.; Abel, Michael T.; Kendall, Ronald J.

doi:10.1002/etc.2917

Cited by 9 publications

(6 citation statements)

References 33 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These residues are subsequently carried by the movement of wind or water to new environments where organisms may be exposed via ingestion, respiratory, or dermal routes (Lal andSaxena 1982, Hoffman et al 2003). Despite the tendency for quail to eat low on the food chain, organochlorine pesticides have been detected in scaled (Callipepla squamata) and bobwhite quail tissues (Baxter et al 2015).…”

Section: Organochlorinesmentioning

confidence: 99%

A Brief History of Insecticides and Quail

Gobeli

Thompson

Reyna

2017

NQSP

View full text Add to dashboard Cite

Humans have employed chemical methods of pest control since the earliest days of agriculture and these substances have affected native wildlife, including quail and other gamebirds (Galliformes), to varying degrees. Several quail species have experienced steep population declines over the past several decades and insecticides may be a contributing factor. Quail are also known to use agricultural habitat for nesting and foraging purposes and are therefore likely to encounter elevated levels of insecticidal chemicals in the soil, vegetation, and insect biomass in that environment. The first commercially available insecticides appeared in the early 1900s with the introduction of arsenic-based compounds (arsenicals). Chemical engineering during World War II resulted in arsenicals being replaced with synthetically produced insecticides such as organochlorine, carbamate, and organophosphate compounds over several decades. Many of these substances have been shown to increase mortality rate, alter behavior, and produce severe reproductive complications in quail, both in the lab and the field. Today, the world's most popular insecticides, neonicotinoids, are being reevaluated for environmental safety following reports that they may be affecting nontarget wildlife. This review examines the types of insecticides that have been used in the United States, how quail could be exposed to these substances, and how they may have contributed to declining quail populations.

show abstract

Section: Organochlorinesmentioning

confidence: 99%

A Brief History of Insecticides and Quail

Gobeli

Thompson

Reyna

2017

NQSP

View full text Add to dashboard Cite

show abstract

“…These high deposition areas can have direct impacts on soil, plants, waterfowl [4,9,19], passerine species [2,20,21] and many other birds, both game and non-game species [8,[22][23][24][25]. As such, Pb shot deposition remains a relevant, and widespread issue [7,11,26,27].…”

Section: Introductionmentioning

confidence: 99%

Bioaccessibility of antimony and other trace elements from lead shot pellets in a simulated avian gizzard environment

et al. 2020

View full text Add to dashboard Cite

Many studies have used grit (in the form of lead (Pb) pellets) presence in avian gizzards as an indicator of Pb shot exposure. However, due to nearly complete pellet absorption in gizzards or rapid passage of pellets, the absence of Pb shot presence in a gizzard does not confirm lack of Pb shot exposure. This study provides the basis for an additional technique to identify if elevated tissue Pb concentration is due to Pb shot exposure. Bioaccessibility of Pb and trace elements (Sb, As, and Sn) present in Pb shot were quantified to determine if any of these elements would be useful as a secondary marker of Pb shot exposure. An avian physiologically based extraction test (PBET) was used to determine pellet dissolution rate and bioaccessible concentrations of Pb, Sb, As, and Sn in a simulated gizzard environment. Of the three trace elements, only Sb concentrations (44-302 μg/mL) extracted into the gizzard solution were greater than environmental background levels (US soil average 0.48 μg/g); thus, no natural source likely provides this amount of Sb. Therefore, there is evidence that Sb can be extracted from Pb shot in bird gizzards at detectable concentrations (above natural background). While further studies are needed to delineate the mechanisms of absorption and distribution, this study lends credence to the hypothesis that Sb may be a useful marker of Pb shot exposure in biological tissues, particularly when Pb pellets are not present nor observed in avian tissues.

show abstract

“…Of special interest, multiple chemical exposures have been documented for sensitive periods of human development, including in pregnant women (Enke et al, 2013; Mitro et al, 2015; Woodruff et al, 2011; Ye et al, 2009), amniotic fluid samples (Silva et al, 2004), infants (Enke et al, 2013), and children (Becker et al, 2009; Blount et al, 2000; Eskenazi et al, 1999; Koch et al, 2011; Teitelbaum et al, 2008). Environmental monitoring studies have documented exposure to multiple chemicals in wildlife, including fish and birds (Ankley et al, 2007; Baxter et al, 2015; Jaspers et al, 2006; Jobling and Tyler, 2006; Kendall et al, 2010; Tyler et al, 1998). Furthermore, environmental monitoring efforts have detected multiple chemicals in freshwater samples, including: pesticides (Hela et al, 2005; Maruya et al, 2016), hormones (Kolok et al, 2007; Kolpin et al, 2002), pharmaceuticals and personal care products (Kolpin et al, 2002; Wu et al, 2014), and industrial chemicals (Durhan et al, 2006; Maruya et al, 2016).…”

Section: Introductionmentioning

confidence: 99%

Cumulative effects of antiandrogenic chemical mixtures and their relevance to human health risk assessment

Howdeshell

Hotchkiss

Gray

2017

International Journal of Hygiene and Environmental Health

111

View full text Add to dashboard Cite

Toxicological studies of defined chemical mixtures assist human health risk assessment by establishing how chemicals interact with one another to induce an effect. This paper reviews how antiandrogenic chemical mixtures can alter reproductive tract development in rats with a focus on the reproductive toxicant phthalates. The reviewed studies compare observed mixture data to mathematical mixture model predictions based on dose addition or response addition to determine how the individual chemicals in a mixture interact (e.g., additive, greater, or less than additive). Phthalate mixtures were observed to act in a dose additive manner based on the relative potency of the individual phthalates to suppress fetal testosterone production. Similar dose additive effects have been reported for mixtures of phthalates with antiandrogenic pesticides of differing mechanisms of action. Overall, data from these phthalate experiments in rats can be used in conjunction with human biomonitoring data to determine individual hazard indices, and recent cumulative risk assessments in humans indicate an excess risk to antiandrogenic chemical mixtures that include phthalates only or phthalates in combination with other antiandrogenic chemicals.

show abstract

Organochlorine pesticides, lead, and mercury in northern bobwhite (Colinus virginianus) and scaled quail (Callipepla squamata) from the rolling plains ecoregion of Texas and Oklahoma

Cited by 9 publications

References 33 publications

A Brief History of Insecticides and Quail

A Brief History of Insecticides and Quail

Bioaccessibility of antimony and other trace elements from lead shot pellets in a simulated avian gizzard environment

Cumulative effects of antiandrogenic chemical mixtures and their relevance to human health risk assessment

Contact Info

Product

Resources

About