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Valentyna Meshkova, Serhii Nazarenko and Maryna Kolienkina

Abstract

Pine sawflies (Hymenoptera, Symphyta, Diprionidae) are the most spread foliage browsing insects of pine forests in Europe, especially monovoltinous European pine sawfly Neodiprion sertifer (Geoffroy, 1785) and common pine sawfly Diprion pini (Linnaeus, 1758), which develops in one or two generations per year depending on weather. The outbreaks of both pine sawflies are the most frequent and intensive in the Steppe zone of Ukraine, especially in the Low Dnieper region, where pine forest (Pinus sylvestris Linnaeus and Pinus pallasiana D. Don) was planted on moving sands in the sixties of the 20th century. This research is aimed at the evaluation of the parameters for D. pini outbreak dynamics in the Low Dnieper region.

Outbreak severity, specific foci area and mean score of stand threat by D. pini were evaluated from the regional statistical reports. In the regional scale for 1979–2017, notable outbreaks of D. pini were registered in 1982, 1993, 2002, 2006 and 2017. An interval between maximums was from 4 to 11 years, in average 9 years. The growth of foci area in 1979–1998 as compared to 1999–2017 as well as correlation between pine stand area and annual area of this pest’s foci in different forests was not statistically significant. Graphical analysis of dynamics of D. pini focal area for 2010–2017 was done based on individual threat levels. Our study confirms the fact of three outbreaks for this period in three forest and hunting enterprises (FHE), two outbreaks in one FHE and one outbreak in one FHE. An interval between the outbreaks makes three or six years. The causes of such shortening of interval are discussed.

Open access

Krzysztof Adamowicz and Tomasz Noga

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Myrtill Gráff, Ágnes Süli, Szabina Szilágyi and Edit Mikó

). Nutrition and reproduction in dairy herds. Intermountain Nutr. Conf., Salt Lake City, UT. Utah State Univ., Logan., pp 65-82 6. Royal, M. D., Pryce, J. E., Woolliams, J. A. & Flint, A. P. F. (2002). The genetic relationship between commencement of luteal activity and calving interval, body condition score, production, and linear type traits in holstein-friesian dairy cattle. Journal of Dairy Science, 85, 11, 3071-3080. https://doi.org/10.3168/jds.S0022-0302(02)74394-4 7. Lucy, M. C. (2001). Reproductive loss in highproducing dairy cattle

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Myrtill Gráff, Edit Mikó, Bence Zádori and József Csanádi

Squacquerone Italian fresh cheeses by ICP-OES. Elsevier Food Control, 17, 229-233, https://doi.org/10.1016/j.foodcont.2004.10.010 6. Branca, A. & Casu, S. (1989). Body condition score annual evolution and its relationship with body reserves in Sarda goat, 215-231, in: L’évaluation des ovins et des caprins méditerranéens, Symposium “Philoetios”, Flamant J.C., Morand-Fehr P. (eds.), Rapport EUR 11893, Luxembourg: Opoce 7. Vacca, G.M., Ouled, H., Pazzola, M., Dettori, M.L. & Carcangiu, V. (2009). An investigation on allele frequency at the CSN1S2

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József Horváth, Zsanett Tóth and Edit Mikó

persistency, female fertility, longevity, and lifetime profit index traits in Holstein dairy cattle, Journal of Dairy Science, 100 (2), 1246-1258. DOI: http://dx.doi.org/10.3168/jds.2016-11770 7. Holstein Association USA (2017). Genetic Evaluations for Productive Life, Somatic Cell Score and Net Merit Dollars, from http://www.holsteinusa.com/genetic_evaluations/ss_Gen_Eval_for_PL.html 8. Sewalem, A., Miglior, F., Kistemaker, G.J., Sullivan, P. & Van Doormaal, B.J. (2008), Relationship between reproduction traits and functional longevity in

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Marko R. Cincović, Jože Starič, Branislava Belić, Jožica Ježek and Ivana Lakić

. Zbornik 26. Savetovanja veterinara Srbije, 2015a BELIĆ B., CINCOVIĆ M.R., DOŠENOVIĆ M., STOJANOVIĆ D., KOVAČEVIĆ Z.: The effects of different anticoagulants on biochemical parameters in blood of dairy cows. Veterinarski glasnik, 69 (1-2): 13-20, 2015. BELIĆ B., CINCOVIĆ M.R., STEVANČEVIĆ M., TOHOLJ B., POPOVIĆ-VRANJEŠ A., PEJANOVIĆ R., DAVIDOV I., POTKONJAK A., STANČIĆ I.: Influence of metabolic profile in early lactation and welfare score of farm to milk production and service period in dairy cow. Contemporary agroculture, 64(1-2):65-71,2015. BRAUN JP