Embryonic eggshell thickness erosion: A literature survey re-assessing embryo-induced eggshell thinning in birds

Orłowski, Grzegorz; Hałupka, Lucyna

doi:10.1016/j.envpol.2015.06.001

Cited by 39 publications

(18 citation statements)

References 54 publications

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“…Although Hg concentrations in eggshells were correlated with those in egg contents in some studies , it is unclear whether there is a general relationship between eggshell and egg content Hg concentrations that can be applied across multiple species. Furthermore, the stage of embryonic development may influence this relationship, because eggshell components are altered during embryonic development (reviewed by Orłowski and Hałupka ). Eggshells naturally thin as a consequence of embryonic development to allow calcium and other components of the eggshell matrix to be mobilized from the calcium‐hardened eggshell and the soft inner eggshell membrane into the interior of the egg for embryonic growth .…”

Section: Introductionmentioning

confidence: 99%

A critical evaluation of the utility of eggshells for estimating mercury concentrations in avian eggs

Peterson

Ackerman

Eagles‐Smith

et al. 2017

Enviro Toxic and Chemistry

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Eggshells are a potential tool for nonlethally sampling contaminant concentrations in bird eggs, yet few studies have examined their utility to represent mercury exposure. We assessed mercury concentrations in eggshell components for 23 bird species and determined whether they correlated with total mercury (THg) in egg contents. We designed a multi-experiment analysis to examine how THg is partitioned into eggshell components, specifically hardened eggshells, material adhered to the eggshells, and inner eggshell membranes. The THg concentrations in eggshells were much lower than in egg contents, and almost all of the THg within the eggshell was contained within material adhered to eggshells and inner eggshell membranes, and specifically not within calcium-rich hardened eggshells. Despite very little mercury in hardened eggshells, THg concentrations in hardened eggshells had the strongest correlation with egg contents among all eggshell components. However, species with the same THg concentrations in eggshells had different THg concentrations in egg contents, indicating that there is no global predictive equation among species for the relationship between eggshell and egg content THg concentrations. Furthermore, for all species, THg concentrations in eggshells decreased with relative embryo age. Although the majority of mercury in eggshells was contained within other eggshell components and not within hardened eggshells, THg in hardened eggshells can be used to estimate THg concentrations in egg contents, if embryo age and species are addressed. Environ Toxicol Chem 2017;36:2417-2427. Published 2017 Wiley Periodicals Inc. on behalf of SETAC. This article is a US government work and, as such, is in the public domain in the United States of America.

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Section: Introductionmentioning

confidence: 99%

A critical evaluation of the utility of eggshells for estimating mercury concentrations in avian eggs

Peterson

Ackerman

Eagles‐Smith

et al. 2017

Enviro Toxic and Chemistry

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“…Reynolds et al 2009, Gosler et al 2011, Maurer et al 2011b, Sparks 2011. Of equal importance, although there is a fairly substantial body of knowledge on variation in overall eggshell thickness in different species and orders of birds ; see Appendix), including embryo-induced eggshell thinning (reviewed in Orłowski and Hałupka 2015), there is no comprehensive information available on how the presence of speckling affects eggshell thickness (including regional variation in a single egg) in different bird species, especially in those whose eggs have a thick surface (¼ cuticular) layer of pigmentation (Baird et al 1975).…”

Section: Introductionmentioning

confidence: 99%

Speckled and plain regions of avian eggshells differ in maternal deposition of calcium and metals: A hitherto overlooked chemical aspect of egg maculation

Orłowski

Pokorny

Dobicki

et al. 2017

The Auk

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“…This is further supported as many birds are long‐lived organisms and as pollution has been shown to, for example, result in eggshell thinning, reduced embryonic development (that may also result in eggshell thinning), and impaired nest defense (occurring at levels 10–100 times lower than lethal concentrations; for recent reviews, see Hellou et al. , Orlowski and Halupka ). For common eiders in Norway, negative effects of pollution on fecundity, but not survival, were documented as high levels of polycyclic aromatic hydrocarbons correlate negatively with breeding success (Bustnes ).…”

Section: Introductionmentioning

confidence: 94%

Multiple stressors: modeling the effect of pollution, climate, and predation on viability of a sub‐arctic marine bird

2018

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Negative effects of long‐transported pollutants, such as many persistent organic pollutants (POPs), on seabirds and other top predators have been documented for decades. Yet, the concentrations, and hence, the negative impacts of many POPs have recently declined in the Northern Hemisphere. However, organisms are exposed to multiple stressors and the impacts of pollution act in concert with both natural and other anthropogenic stressors. In theory, this means that even sub‐lethal POP concentrations may cause adverse effects if they co‐occur with increased levels of other stressors. We tested the multiple stress hypothesis on common eiders, a marine duck with a northern geographical distribution, by assessing the relative importance of pollution, climate (winter sea surface temperature; SSTw), and egg predation on population dynamics and viability (i.e., extinction risk) using Leslie‐matrix population models. The model was parametrized by estimating reproduction and apparent adult survival using long‐term data from a common eider population in sub‐arctic Europe. Average annual adult survival was 0.80 (coefficient of variation [CV] = 22.00%) and showed a negative, both direct and delayed, relationship with SSTw. Average clutch size was 4.41 eggs (CV = 5.12%) and varied in time showing periods of both positive and negative trends, but showed no relationship with SSTw. We based immature survival on estimates from literature: 0.52 and 0.68 for juveniles and yearlings, respectively. Our model supported the multiple stress hypothesis as changes in a single stressor did not induce extinctions, unless the magnitude of our manipulations was extreme except for egg predation. The effect of pollution was, however, increasingly negative when it co‐occurred with a warming climate and egg predation—and population viability was lowest when all the stressors occurred simultaneously.

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Embryonic eggshell thickness erosion: A literature survey re-assessing embryo-induced eggshell thinning in birds

Cited by 39 publications

References 54 publications

A critical evaluation of the utility of eggshells for estimating mercury concentrations in avian eggs

A critical evaluation of the utility of eggshells for estimating mercury concentrations in avian eggs

Speckled and plain regions of avian eggshells differ in maternal deposition of calcium and metals: A hitherto overlooked chemical aspect of egg maculation

Multiple stressors: modeling the effect of pollution, climate, and predation on viability of a sub‐arctic marine bird

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