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The total fertility rate in a specific year is defined as the total number of children that would be born to each woman …-specific fertility rates. It is calculated by totalling the age-specific fertility rates as defined over five-year intervals. Assuming no … net migration and unchanged mortality, a total fertility rate of 2.1 children per woman ensures a broadly stable …
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This Test Guideline describes the Medaka Extended One Generation Test (MEOGRT), which exposes fish over multiple generations to give data relevant to ecological hazard and risk assessment of chemicals, including suspected endocrine disrupting chemicals (EDCs). Exposure in the MEOGRT starts with...
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Families in the OECD are changing. The nuclear family – mother and father, married with children – is becoming less common. The number of reconstituted and single-parent households is rising, families are becoming smaller and individuals are deciding to have children later in life, or not at...
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The OECD Family Indicators database was developed to provide cross-national indicators on family outcomes and family policies across the OECD countries, its enhanced engagement partners and EU member states. The database brings together information from various national and international...
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This Test Guideline is designed to be used for assessing the effects of chemicals in soil on the reproductive output (and other sub-lethal end points) of the earthworm species Eisenia fetida or Eisenia andrei. Adult worms are exposed to a range of concentrations of the test substance either...
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The test method described in this Test Guideline assesses the effect of chemicals on the reproductive output of Daphnia magna Straus. To this end, young female Daphnia are exposed to the test substance added to water at a range of concentrations (at least five). For semi-static tests, at least...
Persistent link: https://www.econbiz.de/10012442469
This Test Guideline is designed for assessing the effects of chemicals on the reproduction of collembolans in soil. The parthenogenetic Folsomia candida is the recommended species for use, but an alternative species such as sexually reproducing Folsomia fimetaria could also be used if they meet...
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