0000000000640604

AUTHOR

Elizabeth M. Droge-young

showing 3 related works from this author

No inbreeding depression in sperm storage ability or offspring viability in Drosophila melanogaster females.

2013

Mating between relatives usually decreases genetic quality of progeny as deleterious recessive alleles are expressed in inbred individuals. Inbreeding degrades sperm traits but its effects on sperm storage and fate within females are currently unknown. We quantified the relationship between the degrees of inbreeding relevant to natural populations (f=0, 0.25 and 0.50) and the number of sperm inseminated and stored, sperm swimming speed, long-term sperm viability while in storage, pattern of sperm precedence, mating latency, and offspring viability of female Drosophila melanogaster. The use of transgenic flies that have either red or green fluorescent sperm heads allowed us to distinguish tw…

0106 biological sciencesMalePhysiologyOffspringGreen Fluorescent ProteinsZoologyBiology010603 evolutionary biology01 natural sciencesAnimals Genetically Modified03 medical and health sciencesSexual Behavior AnimalSpermathecaInbreeding depressionAnimalsInbreedingMatingreproductive and urinary physiology030304 developmental biologyGenetics0303 health sciencesurogenital systemReproductionSpermSpermatozoaLuminescent ProteinsFemale sperm storageDrosophila melanogasterInsect Scienceta1181FemaleInbreedingSperm precedenceJournal of insect physiology
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Inbreeding reveals mode of past selection on male reproductive characters in Drosophila melanogaster

2013

Directional dominance is a prerequisite of inbreeding depression. Directionality arises when selection drives alleles that increase fitness to fixation and eliminates dominant deleterious alleles, while deleterious recessives are hidden from it and maintained at low frequencies. Traits under directional selection (i.e., fitness traits) are expected to show directional dominance and therefore an increased susceptibility to inbreeding depression. In contrast, traits under stabilizing selection or weakly linked to fitness are predicted to exhibit little-to-no inbreeding depression. Here, we quantify the extent of inbreeding depression in a range of male reproductive characters and then infer t…

0106 biological sciencesAttractivenessPopulation fragmentationOutbreeding depressionGenetic purgingBiology010603 evolutionary biology01 natural sciencessperm competition2309 Nature and Landscape Conservation03 medical and health sciences10127 Institute of Evolutionary Biology and Environmental Studiespast selectionInbreeding depressionsperm lengthStabilizing selectionSperm competitionEcology Evolution Behavior and Systematics030304 developmental biologyNature and Landscape ConservationOriginal ResearchGenetics0303 health sciencesEcologyDirectional selectionbanaanikärpänenvetovoimaisuusspermakilpailuSisäsiitos1105 Ecology Evolution Behavior and SystematicsDrosophila melanogasterta1181570 Life sciences; biology590 Animals (Zoology)siittiön pituusInbreeding2303 Ecologyinbreeding depression
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Data from: Inbreeding reveals mode of past selection on male reproductive characters in Drosophila melanogaster

2013

Directional dominance is a prerequisite of inbreeding depression. Directionality arises when selection drives alleles that increase fitness to fixation and eliminates dominant deleterious alleles, while deleterious recessives are hidden from it and maintained at low frequencies. Traits under directional selection (i.e., fitness traits) are expected to show directional dominance and therefore an increased susceptibility to inbreeding depression. In contrast, traits under stabilizing selection or weakly linked to fitness are predicted to exhibit little-to-no inbreeding depression. Here, we quantify the extent of inbreeding depression in a range of male reproductive characters and then infer t…

medicine and health carepast selectionattractivenessMedicinesperm lengthLife sciences
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