Laboratory evaluation of insecticidal effectiveness of a natural zeolite formulation against Sitophilus oryzae (L.), Rhyzopertha dominica (F.) and Tribolium castaneum (Herbst) in treated wheat

Inert dusts are increasingly becoming an integral part of programs for protection of cereal grains from stored-product insects. The intention in this study was therefore to conduct preliminary tests of insecticidal potentials of the natural zeolite formulation Minazel SP (66% SiO2, particle size ≤ 50 μm) originating from Serbia in controlling S. oryzae, R. dominica and T. castaneum. Dust effectiveness was tested in the laboratory (24±1ºC and 50-55% r.h. for parents and 24±1ºC and 60±5% r.h. for F1 progeny) by exposing insects to wheat treated with 0.50, 0.75 and 1.00 g/kg of Minazel SP. Mortality was determined after 7, 14 and 21 days of insect contact with threated wheat, and total mortality after an additional 7 days of recovery on untreated broken wheat. Progeny production in F1 generation was also determined for each insect species after 8-12 weeks. After seven days of exposure and 7 days of recovery of all tested species, the highest efficacy of 62% was observed after the highest application rate of 1.00 g/kg against S. oryzae. The highest efficacy after 14 and 21 days was achieved with the same application rate against T. castaneum (100%), S. oryzae (96-98%) and R. dominica (70-82%). Progeny reduction (IR – inhibition rate) of all tested species depended on the duration of parents exposure to treated wheat. After 7 days of exposure progeny reduction rates were 49-67% for S. oryzae, 42-68% for R. dominica and 47-78% for T. castaneum. After 14 days of exposure, inhibition rates were 55-78% for S. oryzae, 72-81% for R. dominica and 53-90% for T. castaneum, while progeny reductions of S. oryzae were 51-85%, R. dominica 80-96% and T. castaneum 87-99% after 21 days of exposure. Keywords: Wheat grain, Sitophilus oryzae, Rhyzopertha dominica, Tribolium castaneum, Natural zeolit

Susceptibility of red flour beetle Tribolium castaneum (Herbst) populations from Serbia to contact insecticides

Contact insecticides remain the principal option for controlling stored-product insects. Unsatisfactory results of insecticide applications are caused by several factors, one of the most important being resistance of stored-product insects. The objective of this study was to examine the susceptibility in several populations of red flour beetle Tribolium castaneum (Herbst) from Serbia to different contact insecticides. Toxicity of the insecticides dichlorvos, malathion, chlorpyrifos-methyl, pirimiphos-methyl, deltamethrin and bifenthrin to adults of a laboratory population of T. castaneum was investigated in the laboratory by topical application. At the LD50, deltamethrin was the most toxic and malathion the least toxic of the insecticides. Discriminating dose data for the laboratory population were used to test the susceptibility of 10 other populations originating from different storage facilities (silos, warehouses and flour mills) in Serbia. The discriminating dose of malathion caused mortality of up to 85% in seven populations, indicating malathion resistance in those populations. For two populations of T. castaneum from Nikinci and Jakovo LD values, ld-p lines and levels of susceptibility/resistance (RRs) were determined. The most toxic insecticide for adults from Nikinci and Jakovo was deltamethrin, while malathion was least toxic. The resistance ratios (RRs) for malathion at the LD50 were 17.6 for beetles from Nikinci, and 26.0 for beetles from Jakovo. Keywords: Tribolium castaneum adults; Different populations; Insecticide toxicity; Susceptibility resistanc

The first record of the Chinese pond mussel Sinanodonta woodiana (Lea, 1834) in Montenegro

Sinanodonta woodiana (Lea, 1834), Chinese pond mussel (Bivalvia: Unionoida: Unionidae) is one of the most invasive aquatic macroinvertebrate species found in Europe. We report the Chinese pond mussel for the first time in Montenegro, in August 2012, in Lake Šasko (Adriatic part of the Central Mediterranean subarea). One specimen of the Chinese pond mussel was observed in a habitat with a predominantly silt-clay substrate. The main pathway of species introduction was evaluated to be via fish stocking. [Projekat Ministarstva nauke Republike Srbije, br. III 43002 i br. ON 173025

Kvalitet života i depresija starih osoba koje se bave fizičkom aktivnošću

Backgroung/Aim. Since the number of elderly persons is gradually increasing worldwide, there is a need to identify the factors that affect the quality of healthy ageing. On the other hand, depression is the most common psychiatric disorder in the elderly and one of the most serious health problems that modern society is facing. Considering the importance of physical activity for healthy ageing, the question is whether there are differences in quality of life and depression in the elderly in relation to the certain characteristics of physical activities practicing. Methods. Differences in the quality of life and occurrence of depression in elderly were examined in relation to duration of a single training session and frequency of physical activities per week. This non-experimental, descriptive and comparative cross-sectional study involved a total of 188 persons aged 65-84 years, where 90 persons are engaged in a physical activity while 98 persons are not. The Older People's Quality of Life Questionnaire and the Geriatric Depression Scale were used. Results. Statistically significant difference was found in the following domains of quality of life: health, social relationships and psychological and emotional well-being as well as in the total score of quality of life and in the occurrence of depression. The highest values of quality of life and the lowest level of depression manifestation were observed in the group of persons whose single training session lasted for 60 minutes, and in the group of persons engaged in a physical activity twice a week. Conclusion. The main finding indicates that the differences in the duration of a single training session and the frequency of physical activities per week reflect on the overall quality of life, individual domains of quality of life and the occurrence of depression in the elderly persons.Uvod/Cilj. S obzirom na to da se poslednjih decenija broj starih osoba u svetu postepeno povećava, postoji potreba za pronalaženjem faktora koji utiču na kvalitet zdravog starenja. S druge strane, depresija je najčešći psihijatrijski poremećaj kod starih osoba i jedan od najozbiljnijih zdravstvenih problema sa kojima se savremeno društvo suočava. Razmatrajući značaj fizičke aktivnosti za zdravo starenje, postavlja se pitanje da li postoje razlike u kvalitetu života i pojavi depresije kod starih osoba u odnosu na određene karakteristike bavljenja fizičkim aktivnostima. Metode. Razlike u kvalitetu života i pojavi depresije kod starih osoba su ispitane u odnosu na trajanje pojedinačnog treninga i učestalost bavljenja fizičkim aktivnostima na nedeljnom nivou. U ovoj neeksperimentalnoj, deskriptivnoj i komparativnoj studiji poprečnog preseka učestvovalo je 188 osoba starosti od 65 do 84 godina života, i to 90 osoba koje se bave i 98 osoba koje se ne bave fizičkom aktivnošću. Primenjene su Skala kvaliteta života starih ljudi i Gerijatrijska skala depresije. Rezultati. Statistički značajna razlika uočena je u sledeć im domenima kvaliteta života: zdravlje, socijalni odnosi i psihičko i emocionalno blagostanje, kao i u ukupnom skoru kvaliteta života i pojavi depresije. Najviše vrednosti kvaliteta života i najniži stepen ispoljavanja depresije zabeleženi su u grupi osoba čiji pojedinačni trening trajao je 60 minuta ili koji su vežbali dva puta nedeljno. Zaključak. Glavni nalaz ove studije pokazuje da se razlike u trajanju pojedinačnog treninga i u učestalosti bavljenja fizičkim aktivnostima na nedeljnom nivou odražavaju na ukupan kvalitet života, na pojedine domene kvaliteta života i na pojavu depresije kod starijh osoba

Ecologically acceptable usage of derivatives of essential oil of sweet basil, Ocimum basilicum, as antifeedants against larvae of the gypsy moth, Lymantria dispar

Ethanol solutions of five fractions obtained from essential oil of sweet basil Ocimum basilicum L. (Lamiales: Lamiaceae) (F1-F5) were tested for their antifeedant properties against 2nd instar gypsy moth larvae, Lymantria dispar L. (Lepidoptera: Lymantriidae), in laboratory non-choice and feeding-choice experiments. Prior to bioassays, the chemical composition of each fraction was determined by gas chromatography analyses. Significant larval deterrence from feeding was achieved by application of tested solutions to fresh leaves of the host plant. The most effective were F1 (0.5%), F4 (0.05, 0.1, and 0.5%), and F5 (0.1 and 0.5%), which provided an antifeedant index > 80% after five days. A low rate of larval mortality was observed in no-choice bioassay. In situ screening of chlorophyll fluorescence as an indicator of plant stress level (assessed by the induced fluorometry) confirmed that the tested compounds did not cause alternations in the photosynthetic efficiency of treated leaves

The first record of the Chinese pond mussel Sinanodonta woodiana (Lea, 1834) in Montenegro

Sinanodonta woodiana (Lea, 1834), Chinese pond mussel (Bivalvia: Unionoida: Unionidae) is one of the most invasive aquatic macroinvertebrate species found in Europe. We report the Chinese pond mussel for the first time in Montenegro, in August 2012, in Lake Šasko (Adriatic part of the Central Mediterranean subarea). One specimen of the Chinese pond mussel was observed in a habitat with a predominantly silt-clay substrate. The main pathway of species introduction was evaluated to be via fish stocking

Supplementary data for article: Vilipić, J.; Novaković, I.; Stanojković, T.; Matić, I.; Šegan, D.; Kljajić, Z.; Sladić, D. Synthesis and Biological Activity of Amino Acid Derivatives of Avarone and Its Model Compound. Bioorganic and Medicinal Chemistry 2015, 23 (21), 6930–6942. https://doi.org/10.1016/j.bmc.2015.09.044

Supplementary material for: [https://doi.org/10.1016/j.bmc.2015.09.044]Related to published version: [http://cherry.chem.bg.ac.rs/handle/123456789/1997]Related to accepted version: [http://cherry.chem.bg.ac.rs/handle/123456789/3438

ZeoStor – prašivo na bazi prirodnog zeolita namenjeno zaštiti uskladištenog žita od štetnih insekata

tehničko rešenj

The role and significance of veterinary service in international trade of animals and animals products

International trade of animals and animals products occasionally leads to spread of infectious diseases and causes high economic losses in economies of endangered countries. That is the reason why correlation between international trade, animal health and epidemiologic situation got significant place in conclusions of Uruguay round of GATT multilateral international trade negotiations and during establishment of World Trade Organization (WTO). One of WTO establishing documents is Agreement of use of sanitary and phitosanitary measures (SPS), which sets basic rules of food safety and of animal health and animal-related products standards. The main purpose of SPS agreement is to allow free trade of agriculture products while recognizing right of each country to protect human, animal and plant health on its territory. This paper analyzes mutual relationship between animal trade and epidemiology, influence of veterinary service on animal health risk analysis, regionalization and need for harmonization of our veterinary regulation with EC standards