Počet záznamů: 1

Sperm-dependent parthenogens delay the spatial expansion of their sexual hosts

  1. 1.
    0335257 - UZFG-Y 2010 RIV GB eng J - Článek v odborném periodiku
    Janko, Karel - Eisner, Jan
    Sperm-dependent parthenogens delay the spatial expansion of their sexual hosts.
    Journal of Theoretical Biology. Roč. 261, č. 3 (2009), s. 431-440 ISSN 0022-5193
    Grant CEP: GA AV ČR KJB600070602; GA ČR GA206/09/1298; GA ČR GA206/06/1763
    Výzkumný záměr: CEZ:AV0Z50450515; CEZ:AV0Z50070508
    Klíčová slova: Sperm-dependent asexuality * Cobitis * Spatial expansion
    Kód oboru RIV: EG - Zoologie
    Impakt faktor: 2.574, rok: 2009

    In our study we were interested in the effect of sexual-asexual coexistence on the speed of spatial expansion of the whole complex. We expand previously published Lotka-Volterra model of the coexistence of sexual and gynogenetic forms of spined loach Cobitis hybrid complex by diffusion. We show that presence of sperm-dependent parthenogens is likely to negativelly affect the spatial expansion of sexuals, and hence the whole complex, compared to pure sexual population. Given that most of the known sperm-dependent asexual complexes are distributed in areas prone to climate-induced colonisation/extinction events, we conclude that such mechanism may be an important agent in determining the biogeography of sexual taxa and therefore requires further attention including empirical tests.
    Trvalý link: http://hdl.handle.net/11104/0179768