![]() These results underline the need for a better understanding of the influence of the whole array of environmental factors inducing the transition from parthenogenetic to sexual reproduction in aphids. The analysis of clonal responses in both climatic conditions showed (i) a wide variation in investment of clones in sexual reproduction with, in particular, evidence for a mixed strategy employed by clones producing both sexuals without ceasing parthenogenetic reproduction, (ii) no geographic adaptation among clones belonging to cyclical parthenogenetic populations, (iii) an earlier production of sexuals in continental conditions and a higher production of males in oceanic conditions.įurthermore, we have compared the dates of first appearance of sexuals in our experiments with those occurring in the field based on a suction trap database and found that sexuals were caught in nature at least four weeks earlier than in the lab. Twenty clones of this species differing by their geographic origin and their mode of reproduction were placed in two laboratory environments mimicking the changes of photoperiod and thermoperiod occurring naturally from the end of summer and during the autumn in oceanic and continental conditions. I would like to not have underline on links. We have studied the variation in sexual morph production of several clones of the cereal aphid Rhopalosiphum padi (L.) showing both strategies. all my links within text gets underlined. How do I remove the underline where the icon list You will see all the underlined words on the homepage. Permanent parthenogens survive as parthenogenetic females in mild winters, but are regularly eliminated by low temperatures while cyclical parthenogens, which switch to sexual reproduction by the end of summer, produce every year fertilised diapausing eggs resistant to frost. Winter climate determines the success of the two main reproductive strategies employed by aphids. As you might know, HTML5 introduced many exciting features for Web developers. Zoologie, fyziologie živočichů, ekofyziologie, hmyz, Aphididae, Rhopalosiphum padi, zeměpisné klony, variabilita, přezimování, reprodukční strategie, parthenogeneze, pohlavnost, diapauza, vliv světla, vliv tepla, 591.5, 061.3, and 595.2/.7 Language: The Ultimate CSS Gradient Editor was created by Alex Sirota (iosart).If you like this tool, check out ColorZilla for more advanced tools such as eyedroppers, color pickers, palette editors and website analyzers. Maurice, Damien, Rispe, Claude, Simon, Jean-Christophe, and Hullé, Maurice Format:Īrticle, bibliography, conference publication, model:article, and TEXT Subject: Clonal variability in sequences of morph production during the transition from parthenogenetic to sexual reproduction in the aphid Rhopalosiphum padi (Sternorrhyncha: Aphididae) Creator: ![]()
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