Search Results - (Author, Cooperation:J. A. Zeh)

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    Nature Publishing Group (NPG)
    Published 2011
    Staff View
    Publication Date:
    2011-03-25
    Publisher:
    Nature Publishing Group (NPG)
    Print ISSN:
    0028-0836
    Electronic ISSN:
    1476-4687
    Topics:
    Biology
    Chemistry and Pharmacology
    Medicine
    Natural Sciences in General
    Physics
    Keywords:
    *Altruism ; Animals ; *Biological Evolution ; Cooperative Behavior ; Female ; Game Theory ; *Genetic Fitness ; Genetics, Population ; Heredity ; Humans ; Male ; *Models, Biological ; Phenotype ; Reproducibility of Results ; *Selection, Genetic ; Sex Ratio
    Published by:
    http://www.nature.com/

    Latest Papers from Table of Contents or Articles in Press
  2. 2
    Zeh, J. A.
    Springer
    Published 1997
    Staff View
    ISSN:
    1432-0762
    Keywords:
    Key wordsCordylochernesscorpioides ; Genetic incompatibility ; Polyandry ; Postcopulatory sexual selection ; Pseudoscorpion
    Source:
    Springer Online Journal Archives 1860-2000
    Topics:
    Biology
    Notes:
    Abstract The growing molecular evidence that females of many species mate with several males calls for a critical reassessment of the selective forces which act to shape female mating tactics. In natural populations of the harlequin-beetle-riding pseudoscorpion, Cordylochernes scorpioides, females are polyandrous and typically produce mixed-paternity broods. Laboratory behavioral analyses and breeding experiments indicate that polyandry in this pseudoscorpion is an active strategy which increases female reproductive success. Females restricted to mating with a single male experienced a higher rate of embryo failure and produced significantly fewer offspring than either females mated to more than one male in the laboratory or females naturally inseminated in the field. Forced copulation, insufficient sperm from a single mating, male nutrient donations and variation in inherent male genetic quality cannot explain the greater number of nymphs hatched by polyandrous females in this study. Evidence suggests that, by mating with several males, C. scorpioides females may exploit postcopulatory mechanisms for reducing the risk and/or cost of embryo failure resulting from fertilization by genetically incompatible sperm.
    Type of Medium:
    Electronic Resource
    URL:
    http://dx.doi.org/10.1007/s002650050323

    Articles: DFG German National Licenses