Bioekologija poljske zapredkarice (Cephalcia arvensis Panzer. 1805) v smrekovih altimontanskih gozdovih Slovenije : diplomsko delo - univerzitetni študij

Klepec, Urška (author), Jurc, Maja (mentor)

V diplomski nalogi je bil narejen pregled evropskih vrst zapredkaric, tudi tistih, ki ne prehajajo v gradacijo. Praktični del diplomske naloge je bil opravljen na terenu na lokaciji Prevalje, približno 80 let starem sestoju navadne smreke (Picea abies) v času od leta 2010 do 2012. V Prevaljah so bili nabrani vzorci zemlje na šestih ploskvah in iz njih izločene prepupalne oblikerodu Cephalcia. Na podlagi teh je bila ugotovljena velikost populacije Cephalcia spp. na lokaciji. Iz prepupalnih oblik je bil v laboratorijsko kontroliranih razmerah izveden poskus vzgoje odraslih osebkov. Z analizo prepupalnih oblik je bila v večini primerov določena vrsta C. arvensis (71 %),v letu 2012 pa je kot povzročitelj defoliacij na osnovi odraslih osebkov določena vrsta Cephalcia arvensis. Poleg bionomije zapredkarice so bili ugotovljeni tudi podnebni vplivi na dani lokaciji in sicer na podlagi temperature zraka, temperature tal in količine padavin. Potrjeno je bilo, da lahko tako temperatura zraka kot temperatura v tleh vplivata na razvoj vrste C. arvensis in da je pri obeh pomembna mejna vrednost 12 °C. Predvidevamo, da padavine, kljub veliki količini (2008, 2009), niso vplivale na zmanjšanje populacije Cephalcia arvensis.

• Language: Slovenian
• Keywords: poljska zapredkarica, Cephalcia arvensis, Riflov vrh, Picea abies
• Work type: Undergraduate thesis
• Typology: 2.11 - Undergraduate Thesis
• Organization: BF - Biotechnical Faculty
• Place of publishing: Ljubljana
• Publisher: [U. Klepec]
• Year: 2013
• Number of pages: IX, 50 str.
• PID: 20.500.12556/RUL-16177
• UDC: 630*1
• COBISS.SI-ID: 3567526
• Publication date in RUL: 11.07.2014

Secondary language

• Language: Unknown

Abstract

The subject of this thesis is a review of all European sawfly species, including the species that do not have regular outbreaks. The practical part of the thesis was carried out in an 80 years old spruce (Picea abies) stand in Prevalje, between years 2010 and 2012. All the prepupae forms on all six plots on the site near the town Prevalje were collected. Based on this data, the size of the population was determined. An attempt was made to raise adult insects in a controlled laboratoy environment from the prepupae. The majority of the sawfly subjects (71 %) were of the arvensis species and in the year 2012 C. arvensis was the culprit for defoliation. Besides the species bionomy climate conditions at the location, based on the air and soil temperature and precipitation were monitored. The results showed that air and soil temperature significantly impact the development of the C. arvensis and that the threshold temperature is 12 °C. We assume that the large amount of precipitation in the years 2008 and 2009 did not reduce the size of the population C. arvensis.