Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 7 of 7 for “"maternal transfer"”.
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Mercury Bioaccumulation and Adverse Reproductive Effects in Snapping Turtles Inhabiting a Historically Contaminated River
… to its ability to bioaccumulate, biomagnify, and maternally transfers in humans and wildlife. In vertebrates, exposure to Hg can impair growth, alter behavior and morphology, decrease survival, and reduce reproductive success. Unfortunately, most ecotoxicology studies euthanize animals to quantify …
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Individual and Interactive Effects of Maternally- and Trophically-Derived Mercury on Early Amphibian Development
… concern (Chapter 2) and female Bufo americanus transfer accumulated Hg to their eggs (Chapter 3). Maternal transfer of contaminants is a parental effect which typically has negative consequences for offspring because early development is a critical organizational period in the ontogeny of …
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Dynamic energy budgets and bioaccumulation : a model for marine mammals and marine mammal populations
… because of their large energy requirements, and transfer of energy and toxicants from mothers to their young during gestation and lactation. Dynamic energy budget (DEB) models for energy assimilation and utilization, coupled with pharmacokinetic models that calculate distribution of toxicants in …
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Dynamic energy budgets and bioaccumulation : a model for marine mammals and marine mammal populations
… because of their large energy requirements, and transfer of energy and toxicants from mothers to their young during gestation and lactation. Dynamic energy budget (DEB) models for energy assimilation and utilization, coupled with pharmacokinetic models that calculate distribution of toxicants in …
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Etude des facteurs écologiques et écotoxicologiques impliqués dans la réussite d’incubation chez la tortue luth, Dermochelys coriacea, de Guyane Française
… that decreased hatching success. Secondly, a maternal transfer of contaminants from females to their eggs was confirmed, raising the issue of the deleterious effects of environmental contaminants on embryos development, a developmental stage very sensitive to contaminants. Dose-effect …
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Maternal Plasma and Corresponding Egg Yolk Hormone Variation within a Clutch and Across the Nesting Season of the Loggerhead Sea Turtle (Caretta Caretta)
In oviparous vertebrates, the maternal transfer of steroid hormones to egg yolk can vary among species, within and among clutches, seasonally, due to age, and in response to social and environmental cues. In previous studies, significant effects on hatchling phenotype, sex and survival have been …
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Nanoparticle toxicity and molecular mechanisms in fish: A case study with silver nanoparticles
… movement of particles to developing oocytes and maternal transfer to developing embryos. In Chapter 3, vascular effects of PVP-AgNPs ( 60 nm) were evaluated on transgenic zebrafish (TG fli1a: EGFP) embryos. Exposure to 1 and 10 mg/L PVP-AgNPs during the period of vascular development caused a …