tailieunhanh - Báo cáo lâm nghiệp: "reproductive and morphometric characteristics of wild boar (Sus scrofa) in the Czech republic"

Tuyển tập các báo cáo nghiên cứu về sinh học được đăng trên tạp chí lâm nghiệp đề tài: reproductive and morphometric characteristics of wild boar (Sus scrofa) in the Czech republic. | JOURNAL OF FOREST SCIENCE 57 2011 7 285-292 Reproductive and morphometric characteristics of wild boar Sus scrofa in the Czech Republic M. Jezek K. Stipek T. Kusta J. Cerveny J. VÍCHA Department of Forest Protection and Game Management Faculty of Forestry and Wood Sciences University of Life Sciences Prague Prague. Czech Republic ABSTRACT Our study aimed to determine morphometric data for wild boar Sus scrofa in various areas of the Czech Republic and the potential influence of environment on its body measurements. Three localities with varying agricultural systems and overall landscape structure were selected. Hunted boars were measured for height at the withers body length ear length metatarsal length and weight depending on the circumstances either dressed with head without head or undressed . We also determined the age of the hunted boars according to teeth development. During 2003-2007 a total 654 boars were examined in various age categories. Body development was similar in all areas and without statistically significant differences until the age of 6-7 months. From 8 months statistically significant differences in body proportions occur across all localities. It is just at that time that carrying capacities change in the selected localities. The results show that morphometric differences among boars of the same age are influenced by external environmental conditions in which the boars live. Keywords environmental factors juvenile individuals morphometry Sus scrofa wild boar Problems of growth in the wild boar population are today a subject of interest for numerous researchers throughout Europe. In all countries where wild boar is found there has been a population explosion in the last 30 years Hladíková et al. 2007 and the species has expanded its territory into areas where it did not previously exist Nordic countries and Portugal . In most European countries the wild boar s population growth has been of an exponential character. This situation has been .

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