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Search Results: 1 - 10 of 291 matches for " eljko Tomanovi "
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Species of Adialytus F rster, 1862 (Hymenoptera, Braconidae, Aphidiinae) in Iran: taxonomic notes and tritrophic associations
Ehsan Rakhshani,Petr Stary,eljko Tomanovi
ZooKeys , 2012, DOI: 10.3897/zookeys.221.3541
Abstract: The species of Adialytus F rster in Iran are taxonomically studied and new data on distribution and host associations are presented. The existence of a species complex, in the case of A. ambiguus (Haliday), and the morphological variability in commonly used taxonomic characters has been discussed. In total, four valid species belonging to the genus Adialytus including A. ambiguus (Haliday), A. salicaphis (Fitch), A. thelaxis (Stary) and A. veronicaecola (Stary) have been identified and recorded from Iran. Also, we recognized two additional phenotypes: “A. arvicola” (Stary) and “Adialytus cf. ambiguus” (Haliday). These phenotypes and A. veronicaecola are newly recorded from Iran in association with Sipha and Aphis species, respectively. An illustrated key for identification of the species and two variable phenotypes is presented.
The first record of Aphidius ervi Haliday in Slovenia
Katarina Kos, eljko Tomanovi , Helena Rojht, Stanislav Trdan
Acta agriculturae Slovenica , 2009, DOI: 10.2478/v10014-009-0011-3
Abstract: In 2008, a lucerne aphid parasitoid Aphidius ervi Haliday was first recorded in Slovenia. This oligophagous parasitoid is used as biological control agent against bigger aphid species. By sampling aphid mummies on different locations in Slovenia in 2008, we found parasitoid Aphidius ervi on nine host plants (corn, pea, alfalfa, red clover, winter wheat, oat, onion, potato and winter barley). Among 1812 primary parasitoids found in Slovenia in 2008, there were 46 individuals of Aphidius ervi; 21 male and 25 female parasitoids. In the present paper description of the species, its geographic distribution and host plant-aphid-parasitoid associations are given.
Oenothera biennis l.: An invasive alien plant species as a reservoir of aphidophagous insects in agroecosystems
Tomanovi? Sne?ana,Tomanovi? ?eljko,Jovanovi? S.,Bo?a Pal P.
Archives of Biological Sciences , 2004, DOI: 10.2298/abs0402132t
Abstract:
Aphids (Aphididae) and their parasitoids in selected vegetable ecosystems in Slovenia
Katarina Kos, eljko Tomanovi , Olivera Petrovi -Obradovi , iga Laznik, Matej Vidrih, Stanislav Trdan
Acta agriculturae Slovenica , 2008, DOI: 10.2478/v10014-008-0002-9
Abstract: Sucking insects, which representatives are also aphids, can cause important economic damage on cultivated and wild-growing plants in vegetable ecosystems. Our research was based on the aim of biological control, which is to limit or to control the pests with the use of their natural enemies. From April to November 2006 living aphids and their mummies were sampled together with their host plants in four locations in Slovenia. The samples have been taken from vegetables, weeds, within-crops plants and from the plants in the field borders. The occurrence of 18 aphid species was confirmed - 14 of them were parasitised. In our research 365 parasitoid specimens (17 species from 8 genera - Aphidius, Binodoxys, Diaeretiella, Ephedrus, Lipolexis, Lysiphlebus, Monoctonus, and Praon - of the family Aphidiidae) were recorded and identified. The most abundant parasitoid species were Aphidius matricariae (32.2 %) and Lysiphlebus fabarum (29.3 %). Parasitoid L. fabarum had the widest range of hosts; it parasitised aphids on the plants from 7 different botanical families. Sex ratio in our research confirmed the known fact, that in natural ecosystems female parasitoids are more numerous than the male parasitoids; this ratio in our research was 71%: 29%.
The effect of diatomaceous earth of different origin, temperature and relative humidity against adults of rice weevil (Sitophilus oryzae [L.], Coleoptera, Curculionidae) in stored wheat
Helena Rojht, Christos G. Athanassiou, Bill J. Vayias, Nickolas Kavallieratos, eljko Tomanovi , Matej Vidrih, Katarina Kos, Stanislav Trdan
Acta agriculturae Slovenica , 2010, DOI: 10.2478/v10014-010-0002-4
Abstract: Laboratory experiments were carried out to evaluate the impact of diatomaceous earth (DE) samples of different origin with their insecticidal properties to control one of the most important primary pest in stored grain. We tested the efficacy of three local DE, from Serbia, Greece and Slovenia, and commercial formulation SilicoSec against the rice weevil, Sitophilus oryzae, adults in stored wheat. The experiments were carried out at three temperatures (20, 25 and 30 °C) and two relative humidity (RH) levels (55 and 75 %). Mortality of pest was counted 7, 14 and 21 days after exposure (DAT) at the following DE dose rates: 100, 300, 500 and 900 ppm. The mortality of adults normally increased with increasing dose rates and DAT. In all samples the mortality of rice weevil adults (dose rate 900 ppm, 21 DAT) was above 90 %, except at Slovenian DE (at 20 °C and 55 % RH) and Greek DE (at 25 °C and 75 % RH), when the mortality was 85.3 and 67.6 %, respectively. With 100 % mortality (14 DAT and at 900 ppm) the most effective was SilicoSec. Slovenian DE was more effective at 55 % RH than at 75 % RH (7 DAT at all temperatures).
Families and social capital in Serbia: Some issues in research and policy
Tomanovi? Smiljka
Sociologija , 2008, DOI: 10.2298/soc0801001t
Abstract: Based on several recent studies on families and households in Serbia, the paper examines the heuristic and methodological validity of the concept of social capital as applied in studying families in post-socialist transformation. After discussing conceptual issues and problems related to social capital and study of contemporary families, the findings from the studies related to social capital are summarized. It is argued that in a post socialist society in transformation, such as Serbia, there are two sides to social capital, that consequences of strong "bonding" social capital are twofold, and that this has complex effects on different societal levels. In the concluding part, some methodological and policy issues that emerged from the evidence are pointed out.
Relevance of social capital and its implications for children: Study in three Belgrade urban settings
Tomanovi? Smiljka
Sociologija , 2004, DOI: 10.2298/soc0403259t
Abstract: The paper aims at questioning some theoretical and methodological issues of relevance of social capital concept for children and its policy implications. The evidence for the analysis comes from the small-scale survey and eight focus group interviews with 13 - 14 year old schoolchildren in three Belgrade urban settings. By using the operationalisation developed by V. Morrow (2003), the author explores the validity in the case of children of social networks, sense of belonging and local identity community, and civic engagement as features and components of social capital. The evidence shows that each of these features has its particularity when children and young people are concerned, which has to be kept in mind when using social capital as theoretical concept and methodological tool. The validity of the concept of social capital in its broader terms for children is questioned in the paper. Considering different kinds of social constraints, one could ask whether it would be more helpful to think about the defined components as "social resources" than as "capital" when we consider children as a social group. This argument has also specific policy implications.
Changes in transition to adulthood of young people in Serbia between 2003 and 2011
Tomanovi? Smiljka
Sociologija , 2012, DOI: 10.2298/soc1202227t
Abstract: The paper deals with transition to adulthood of young people in Serbia through analysis of findings of the two surveys from 2003 and 2011. The aims are to explore the changes in pace, as well as in transitional trajectories that could indicate their destandardisation and individualisation. Some of the debatable issues related to the transition to adulthood approach are presented in the framework and discussed further in relation to the results of the analysis in the concluding section. The findings indicate that there exists some acceleration in the pace of transition, mainly due to increased financial independence of young people. The trajectories, however, are still standardised, while transition is postponed and prolonged. The comparative analyses of some features of young people’s transitions to adulthood in the Balkans led to the conclusion that an alternative conceptualization is needed.
Seasonal distribution of Borreliae in Ixodes ricinus ticks in the Belgrade region
Milutinovi? Marija,Radulovi? ?.,Tomanovi? Sne?ana,Tomanovi? ?.
Archives of Biological Sciences , 2006, DOI: 10.2298/abs0603183m
Abstract: Green areas at four localities in the Belgrade region (Ada Ciganlija, Ko utnjak, Miljakovac forest, and Mt. Avala) were investigated in 2004. The aim of the research was to clarify the faunistic composition, relative abundance, and population dynamics of ticks, as well as the seasonal distribution of Borrelia burgdorferi sensu lato (sl) in Ixodes ricinus. Two species of ticks were detected: Ixodes ricinus and Dermacentor reticulates. Relative abundance analysis revealed that the species Ixodes ricinus was predominant (97.41 %). Out of 942 Ixodes ricinus ticks, 188 (19.96 %) were infected with Borrelia burgdorferi sl. The infection rate of adults by localities ranged from 19.16% to 30.99% (Mt. Avala and Ada Ciganlija, respectively).
Attitudes on transition to adulthood among young people in Serbia
Tomanovi? Smiljka,Ignjatovi? Suzana
Sociologija , 2006, DOI: 10.2298/soc0601055t
Abstract: The aim of this paper is to explore the attitudes on transition to adulthood among young people in Serbia. The empirical basis of our analysis was a multidimensional study carried out by an interdisciplinary team of experts and organized by the Center for Policy Studies from Belgrade. After outlining the analytical framework for youth transition on the normative level, we intend to analyze the attitudes of young people concerning adulthood with special reference to family transitions: independence from the family of origin, partner relationships, marriage, parenthood, as well as perceptions of their agency in transition to adulthood. In the concluding part, we will interpret the findings by comparison with the trends outlined in studies of young people from some Western and post-socialist countries in the region.
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