Are farm-reared red-legged partridge releases increasing hunting pressure on wild breeding partridges in central Spain?
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- 作者：F. Casas ; B. Arroyo ; J. Viñuela ; J. L. Guzmán…
- 关键词：Alectoris rufa ; Game releases ; Hunting management ; Overhunting
- 刊名：European Journal of Wildlife Research
- 出版年：2016
- 出版时间：February 2016
- 年：2016
- 卷：62
- 期：1
- 页码：79-84
- 全文大小：293 KB
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B. Arroyo (3)
J. Viñuela (3)
J. L. Guzmán (3)
F. Mougeot (3)
1. Estación Experimental de Zonas Áridas (EEZA-CSIC), Carretera de Sacramento s/n, La Cañada de San Urbano, 04120, Almeria, Spain
2. Department of Biology, University of Maryland, College Park, Maryland, USA
3. Instituto de Investigación en Recursos Cinegéticos (IREC, CSIC-UCLM-JCCM), Ronda de Toledo 12, 13005, Ciudad Real, Spain - 刊物类别：Biomedical and Life Sciences
- 刊物主题：Life Sciences
Zoology
Animal Ecology - 出版者：Springer Berlin / Heidelberg
- ISSN：1439-0574
文摘
Wild red-legged partridge populations have experienced important declines in recent decades. With an aim to increase or maintain hunting quotas, releases of farm-reared red-legged partridges have concomitantly increased. However, the sustainability of this management practice is increasingly questioned. Farm-reared partridges suffer a high mortality rate immediately after release, and many released birds may already be dead before hunting takes place. Therefore, it is possible that if hunters adjust harvest to the number of farm-reared released birds, this may lead to an overhunting of the wild breeding stocks. We investigated here whether autumn mortality by hunting of radio-tracked birds that bred in the previous summer differed between hunting estates that use or do not use releases as part of their management practices. Although our sample size was limited (32 radio-tagged birds monitored throughout the hunting season in four estates, with only one conducting releases), our results report novel data that support this cause for concern. We found that hunting was the main cause of mortality and that the proportion of hunted partridges was much higher in the estate with releases of farm-reared birds than in the three estates that did not use releases. Therefore, the release of farm-reared partridges, instead of reducing hunting pressure on the breeding stock through a potential dilution effect, may have an opposite effect. This should be confirmed with more spatial replicates, but raises serious concerns regarding the long term sustainability of wild partridge populations and their exploitation for hunting purposes in estates that overhunt partridge populations due to releases. Keywords Alectoris rufa Game releases Hunting management Overhunting