Počet záznamů: 1

Novel roles for the corpus allatum hormone in the cost of sexual interactions in the linden bug Pyrrhocoris apterus

  1. 1.
    0365258 - BC-A 2012 RIV GB eng J - Článek v odborném periodiku
    Blažková, Hana - Provazník, Jan - Hodková, Magdalena
    Novel roles for the corpus allatum hormone in the cost of sexual interactions in the linden bug Pyrrhocoris apterus.
    Journal of Insect Physiology. Roč. 57, č. 4 (2011), s. 529-535 ISSN 0022-1910
    Grant CEP: GA ČR GAP502/10/1612
    Výzkumný záměr: CEZ:AV0Z50070508
    Klíčová slova: life-span * mating activity * allatectomy
    Kód oboru RIV: ED - Fyziologie
    Impakt faktor: 2.236, rok: 2011

    The cost of sexual interactions, usually expressed as a reduction of life-span, is a fundamental but poorly understood aspect of life. According to a widely accepted view, a rise in the “pro-aging” juvenile hormone (JH) might contribute to the decrease of life span caused by sexual interactions. We tested this hypothesis using the linden bug Pyrrhocoris apterus by removing the corpus allatum (CA), the source of JH. Contrary to prediction, the decrease of life span by sexual interactions was similar in control and CA-ablated males, and was even enhanced in CA-ablated females, suggesting that the cost of sexual interactions is not mediated by enhanced levels of JH. Another unexpected finding was that the female JH is principally responsible for the sex-induced reduction in the male survival. This is the first demonstration of the effect of a female reproductive hormone on the male life span in animals.
    Trvalý link: http://hdl.handle.net/11104/0200542