Spermatozoïdes apyrènes et eupyrènes et réceptivité postcopulatoire chez les femelles Choristoneura rosaceana et C. Fumiferana
|Advisor:||Delisle, Johanne; McNeil, Jeremy Nichol|
|Abstract:||At mating lepidopteran male transfer two types of spermatozoa: the eupyrene and apyrene sperm. In the hours that follow, female moths usually stop producing sex pheromone (pheromonostasis). It has been suggested that the temporal migration of the spermatozoa within the female reproductive system may play a role in this physiological process. The general objective of this thesis was to determine the relative importance of the two sperm types in pheromonostasis by examining their migration in the days following mating. We also examined the impact of multiple mating by males on the number of spermatozoa transferred to the female, the subsequent migration of the spermatozoa in the female reproductive tract, as well as the females’ fecundity and fertility. Overall, the results suggest that the spermatozoa play a minor role, if any, in the short and long term pheromonostasis of Choristoneura fumiferana and C. rosaceana.|
|Document Type:||Thèse de doctorat|
|Open Access Date:||11 April 2018|
|Collection:||Thèses et mémoires|
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