Document Detail

Survival and causes of death among released brown hares (Lepus europaeus Pallas, 1778) in Central Poland.
MedLine Citation:
PMID:  23002287     Owner:  NLM     Status:  Publisher    
We describe the results of our research on population dynamics among brown hares reared in enclosures and then released into suitable natural habitat. Radio-tracking was used to follow the fate of 60 released brown hares over a 4-year period, extending between November 2005 and November 2009. The survival rate among these animals after 12 months was estimated to be 37 %, with 22 tagged individuals surviving beyond 1 year post-release. The highest (40 %) level of mortality characterised the first month after release, while a second period of enhanced mortality coincided with the breeding season (altogether accounting for a 20 % mortality rate). There was no significant relationship between body mass and mortality rate in the first month following release. A natural cause of death was predation by mammals, which accounted for some 31 % of all losses. Remaining causes were poaching (13 %), hits by vehicles (7 %) and unidentified causes (9 %). However, in at least 40 % of cases, it was not possible to determine the date when a released animal died, to say nothing of the cause of death.
Magdalena Misiorowska; Michał Wasilewski
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-5-2
Journal Detail:
Title:  Acta theriologica     Volume:  57     ISSN:  0001-7051     ISO Abbreviation:  Acta Theriol.     Publication Date:  2012 Oct 
Date Detail:
Created Date:  2012-9-24     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0314001     Medline TA:  Acta Theriol (Warsz)     Country:  -    
Other Details:
Languages:  ENG     Pagination:  305-312     Citation Subset:  -    
Department of Forest Zoology and Wildlife Management, Faculty of Forestry, Warsaw University of Life Sciences-SGGW, ul. Nowoursynowska 159, 02-776 Warsaw, Poland.
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