| Titre : | Contribution of released captive-bred Mallards to the dynamics of the natural population (2016) |
| Auteurs : | Jocelyn Champagnon, Auteur ; Matthieu Guillemain, Auteur ; Jean-Yves Mondain-Monval, Auteur ; Guillaume Souchay, Auteur ; Pierre Legagneux, Auteur ; Vincent Bretagnolle, Auteur ; Laura Van Ingen, Auteur ; François Bourguemestre, Auteur ; Jean-Dominique Lebreton, Auteur |
| Type de document : | Article |
| Dans : | Ornis Fennica (93(1) March 2016) |
| Article en page(s) : | 3-11 |
| Langues: | Anglais |
| Mots-clés : | TdV ; Anas platyrhynchos ; Captivité ; Faune sauvage ; Chasse ; Dynamique population |
| Résumé : | The consequences of releasing captive-bred game animals into the wild have received little attention, despite their potential demographic impact, as well as costs and/or benefits for recipient populations.If restockin gaims at increasing harvest opportunities,increased hunting pressure is expected,which would then be supported by either wild or released individuals.On the otherhand,the wild recipient population may benefit from there lease of captive-bred conspecifics if this reduces hunting pressure on the former through dilution of risk or selective harvesting of captive-bred individuals. Here, we modelled a Mallard (Anasplatyrhynchos)population consisting of wild individuals supplemented by captive-bred conspecifics,a very common practice in Europe over the last 40years.The objective was to test the effect of an increase of harvest rate on released and wild individuals, respectively. Our results show that, due to the low reproductive value of the released Mallards,the population was hardly affected by a change in harvest of these low performance individuals. |
| En ligne : | http://www.ornisfennica.org/ |



