1. |
2. |
3. |
4. |
5. Geographical variation in abdominal colour pattern in Criorhina pachymera (Egger, 1858) (Diptera: Syrphidae)Jan Bisschop, Maarten De Groot, Gaël Pétremand, 2023, original scientific article Abstract: The bee-mimicking hoverfly species Criorhina pachymera shows pronounced geographical variation in abdominal colour pattern. Based on 218 records from 22 European countries, we describe six abdomen forms divided over two main groups. Group A in western, northern and central parts of Europe contains abdomen forms A1–A3 with slender pollinose bands on the third and fourth tergite. Group B in south-eastern Europe contains forms B1–B3 with broad pollinose bands. These groups are separated by the Alps and the Carpathians, such as the separation of the original distributions of the two main postglacial recolonization lineages of honey bees in Europe. As these honey bee groups differ by the width of the pollinose bands on the third to fifth tergite, Batesian mimicry can explain the group distribution of C. pachymera with slender or broad pollinose bands. The different forms of C. pachymera in both groups are categorised by the extent of orange colouration on the second and third tergite. The darkest form A1, has a widespread distribution in Europe. Intermediate bright forms A2 and A3 occur predominantly in a belt along the southern margin of the group A distribution and in Sweden. Dark form B1 and intermediate bright form B2 occur on the Balkan peninsula and in neighbouring regions. The brightest form B3, is found in Italy, Switzerland (Ticino) and Greece. There is an average increase in the extent of orange colouration on the second and third tergite with decreasing geographical latitude, making temperature a likely additional cause for the described abdominal colour variation.
Keywords: hoverflies, colour variation, biogeography, Batesian mimicry, citizen science data
Published in DiRROS: 28.03.2023; Views: 139; Downloads: 67
 Full text (2,74 MB)
This document has many files! More... |
6. Use of an arboretum and DNA barcoding for the detection and identification of leaf-mining insects on alien woody plantsNatalia I. Kirichenko, Stanislav Gomboc, Barbara Piškur, Maarten De Groot, 2023, original scientific article Abstract: Arboreta serve as effective tools for identifying alien insect pests and novel trophic associations. In this study, we used an arboretum in Slovenia to survey woody plants and identify both alien and native leaf miners. The leaves and twigs of 50 woody plant species and their cultivars were examined for characteristic damage. We used an integrative approach that combined identification based on leaf mines and DNA barcoding of the larvae and pupae found in the mines. In total, 62 leaf-mining species were identified, including eight alien species, of which the heliozelid Coptodisca lucifluella (Clemens, 1860) and the agromyzid Cerodontha unisetiorbita Zlobin, 1992 were documented for Slovenia for the first time. Additionally, three presumably native Gracillariidae moths Phyllocnistis labyrinthella (Bjerkander, 1790), P. ramulicola Langmaid & Corley, 2007 and P. saligna (Zeller, 1839) represented the first record for Slovenia. Furthermore, we documented 23 novel-to-science trophic associations, 20 of which involved native insects and alien woody plants, primarily from Asia. This study highlights the importance of arboreta and botanical gardens for the interception of invasive alien insects and the early detection of trophic shifts of native insects to alien plants, which can aid in predicting their potential spread.
Keywords: botanical garden, sentinels, leaf miners, alien species, non-native trees, novel trophic associations, DNA barcoding, Slovenia
Published in DiRROS: 24.03.2023; Views: 139; Downloads: 56
Full text (6,32 MB)
This document has many files! More... |
7. Verjetnostna napoved sanitarnega poseka smreke zaradi podlubnikov v Sloveniji v 2023Nikica Ogris, Maarten De Groot, 2023, short scientific article Keywords: gozdovi, varstvo gozdov, navadna smreka, Picea abies, sanitarni posek, napoved, prognoza, ogroženost, model, smrekovi podlubniki, Ips typographus, Pityogenes chalcographus
Published in DiRROS: 24.03.2023; Views: 155; Downloads: 59
Full text (1,28 MB)
This document has many files! More... |
8. Ascertaining the knowledge of the general public and stakeholders in the forestry sector to invasive alien species - a Pan-European studyFlavius Balacenoiu, Anže Japelj, Iris Bernardinelli, Bastien Castagneyrol, György Csóka, Milka Glavendekić, Gernot Hoch, Boris Hrašovec, Silvija Krajter Ostoić, Márton Paulin, David Williams, Johan Witters, Maarten De Groot, 2023, original scientific article Abstract: Against the background of the phenomenon of globalisation, which has increasingly intensified in recent decades, invasive alien species (IAS) have led to biological invasions that have resulted in multiple negative effects on economies, human health, and especially on the environment. In order to control invasive alien species, preventive actions are considered the most effective methods. In this context, society can actively participate in the process of early detection and preventing the spread of these organisms, but there is a need to raise public awareness. In order for this process to take place in the most efficient way, it is necessary to initially evaluate the knowledge of the general public to IAS. Through a questionnaire that was circulated in ten European countries and had over two thousand respondents, this study aimed to investigate the level of knowledge of some stakeholders in the forestry sector regarding IAS. The results showed that a vast majority of respondents who participated in the study had heard about IAS and provided a correct definition of these organisms. Most of the respondents in this study heard for the first time about IAS from school, the Internet, or journal articles. Data analysis also showed that stakeholders in the forestry sector (foresters, forest owners, and members of environmental NGOs) were more likely than the other respondents to be aware of the impact of IAS. The results of this study offer an insight to researchers and decision makers assessing the differences of opinion regarding invasive alien species, and the necessary steps that could be adopted in the process of raising awareness in society.
Keywords: citizen science, online survey, biosecurity
Published in DiRROS: 09.03.2023; Views: 156; Downloads: 70
Full text (1,23 MB)
This document has many files! More... |
9. |
10. Ukrepanje ob sumu pojava karantenskih škodljivih organizmov v Kočevju – simulacijska vaja v živoEva Groznik, Simon Zidar, Maarten De Groot, Nikica Ogris, Katja Kunc, Barbara Piškur, 2022, popular article Keywords: karantenski škodljivi organizmi, ukrepanje, simulacijska vaja
Published in DiRROS: 20.02.2023; Views: 203; Downloads: 4
Full text (323,30 KB) |
