Biology 1 (2015 8) 45-55 ~ ~ ~ УДК 595.7:591.5:591.3 Oviposition of the Fir Sawyer Beetle (Monochamus urussovi Fisch.) on the Tree Stem: Analysis Using Models of Random Point Fields Olga P. Sekretenkoa,b Anton V. Kovalevb *, and Vladislav G. <...> Soukhovolskya,b aSukachev Institute of Forest SB RAS 50/28 Akademgorodok, Krasnoyarsk, 660036, Russia b Received 28.04.2013, received in revised form 21.12.2013, accepted 07.09.2014 The fi r sawyer beetle is a xylophagous species that develops outbreaks in boreal coniferous forests. <...> These oviposition scars are clearly visible while the tree is alive. <...> Under the bark each larva forms compact damage area close to the oviposition scar. <...> In this study, we tested the hypothesis that adult females optimize the eggs’ spatial pattern to reduce the possibility that the feed zones of expectant larvae will overlap one another. <...> This oviposition strategy reduces larvae competition and enhances their survival. <...> During the outbreak’s peak phase the stems of damaged fi r trees were photographed and the coordinates of the 317 oviposition scars were recorded. <...> Therefore, the reproductive strategy of the fi r sawyer beetle includes oviposition behavior aimed to minimize larval competition. <...> Keywords: Monochamus urussovi Fisch., oviposition behaviour, food competition, reproductive strategy, plant-insect interaction, spatial point process, point pattern, spatial statistics. <...> All rights reserved * Corresponding author E-mail address: sekretenko@ksc.krasn.ru Krasnoyarsk Sceintifi c Centre SB RAS 50 Akademgorodok, Krasnoyarsk, 660036, Russia # 45 # Olga P. Sekretenko, Anton V. Kovalev… <...> Размещение яиц черного пихтового усача (Monochamus urussovi Fisch.) на стволе дерева: анализ с использованием моделей случайных точечных полей А.В <...>