Reconnaissance vocale mère-chiot durant la lactation chez le phoque commun de l'estuaire du St-Laurent
|Advisor:||Beauplet, Gwenael; Charrier, Isabelle|
|Abstract:||Pinnipeds adopt contrasting maternal strategies, which are associated with ecological factors affecting the difficulties encountered by mother-pup pairs to maintain contact throughout the rearing period. These include offspring mobility and the frequency of maternal absences. As opposed to most phocid species, harbour seal females forage at sea during lactation and their pups are highly mobile from birth to weaning. The objective of this study was to characterize the mother-pup vocal recognition system in this species. Pup calls convey an individual stereotypy level intermediate between that typically found in the two main families of pinnipeds. Females recognize the calls of their pup among others, a capacity that is correlated to the individual stereotypy level of pup voice. The propagation efficiency of pup calls vary considerably among mother-pup reunion sites. These results provide insights as to the influence of ecological and environmental constraints on the evolution of vocal recognition in harbour seals.|
|Document Type:||Mémoire de maîtrise|
|Open Access Date:||20 April 2018|
|Collection:||Thèses et mémoires|
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