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Comparison of two age determination methods of the European Hares (Lepus europaeus Pallas, 1778) in southwest Lithuania
Type of publication
Straipsnis Master Journal List / Article in Master Journal List (S2)
Title
Comparison of two age determination methods of the European Hares (Lepus europaeus Pallas, 1778) in southwest Lithuania
Is part of
Acta biologica universitatis Daugavpiliensis. , Vol. 11, No.1 (2011)
Date Issued
Date Issued |
---|
2011 |
Extent
p. 22-28
Field of Science
Abstract
In performing European hare population analysis one of the most difficult task is to determine the age of hares. Age analysis is a necessary condition for controlling the population dynamics. Rapidly breeding animals displays a consistent that they are not long-lived. Practically determining hares age usually attribute by ulna coalescence (Stroh's method), but exist some reasons that during the hunting in January - February this attribute can not determine the age of these animals exactly. The aim of our work was to determine the age structure of hunted hares by using two diferent methods and statistically to compare the results. 50 European hares, which were hunted during the years 2008 - 2011 in Vilkaviskis and Marijampole district territories in Southwest Lithuania were examined for estimating their age. The hares was hunted during Nowember- January. The age of hares was determine - by ulna coalescence (Stroh's method) in dissection and by dry eye lenticular weight. After examination by eye lenticular weight method, it was estimated, that 52% of hares were under to one year old. While examined by using Stroh's feature - young, under 1 year old, hares, it was found 10 % more comparing to results, achieved by using eye lenticular method - total 62%. It was found, that using visually identification of hare ulna ossification, there is a tendency to reduce an age of hares. Also it was identified that results achieved by using Stroh's method, statistically corresponds to eye lenticular method's results. Examined hypothesis allows to allege that between both methods results exist a reliance, and Stroh's feature can be successfully used instead of eye lenticular weight method to determine an age of European hare. While formulating the conclusions of scientific research it is expedient to compare the results of Stroh's method with results of eye lenticular weight results.
Type of document
type::text::journal::journal article::research article
Language
Anglų / English (en)
Coverage Spatial
Latvija / Latvia (LV)