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Reproduction decreases life span in the giant waterbug (Belostoma flumineum)
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ABSTRACT.-Senescence is the result of age-specific trade-offs among life history traits. Energetic trade-offs among various components of an organism's energy budget can also affect an individual's life span. An increase in reproductive effort, for instance, can result in less energy available for maintenance of body tissues resulting in a shorter life span. We investigated the effects of reproduction on longevity of giant waterbugs (Belostoma flumineum). Female giant waterbugs oviposit eggs ...
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High-Resolution Mapping of Quantitative Trait Loci Affecting Increased Life Span in Drosophila melanogaster
Genetics
; ABSTRACT Limited life span and senescence are near-universal characteristics of eukaryotic organisms, controlled by many interacting quantitative trait loci (QTL) with individually small effects, whose expression is sensitive to the environment. Analyses of mutations in model organisms have shown
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AS LIFE SPAN RISES, SO MUST QUALITY.(Spotlight on Health & Fitness)
Rocky Mountain News (Denver, CO)
; Byline: Roger Dobson The Guardian Scripps Howard News Service Bir Chaudhari, reputedly the world's oldest man, likes to take it easy these days. At 141, he's entitled to rest his 4 ...
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A Measurable Increase in Oxidative Damage Due to Reduction in Superoxide Detoxification Fails to Shorten the Life Span of Long-Lived Mitochondrial Mutants of Caenorhabditis elegans
Genetics
; ABSTRACT SOD-1 and SOD-2 detoxify superoxide in the cytoplasm and mitochondria. We find that, although several long-lived mutants of Caenorhabditis elegans have increased SOD levels, this phenomenon does not correlate with life span or growth rate. Furthermore, although disruption of sod-1 or -2
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A Functional Analysis Reveals Dependence on the Anaphase-Promoting Complex for Prolonged Life Span in Yeast
Genetics
; ABSTRACT Defects in anaphase-promoting complex (APC) activity, which regulates mitotic progression and chromatin assembly, results in genomic instability, a hallmark of premature aging and cancer. We investigated whether APC-dependent genomic stability affects aging and life span in yeast.
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Study:Having sons might shorten mother's life span; 34 weeks:Researchers use data from 1640-1870
Telegraph - Herald (Dubuque)
; WASHINGTON (AP) -"My son will be the death of me yet." The familiar lament by mothers everywhere might have a kernel of scientific truth, researchers say. A study analyzing family church records in earlier centuries found that having sons shortened the life span of Finnish mothers by about 34 weeks
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