This page has only limited features, please log in for full access.
The sensitivity to thiacloprid and lambda-cyhalothrin ingested from prey organisms was studied in Coccinella septempunctata and Harmonia axyridis, since the effect of ingestion exposure to these insecticides is unknown in these species. All developmental stages of the ladybirds were fed on Acyrthosiphon pisum treated with half or full field rate of the insecticides. Almost all instars were killed within 3 h of the start of ingestion of lambda-cyhalotrin-treated prey. The action of thiacloprid was more extended in time in both coccinellids and more variable between their instars. Reducing the field rate of lambda-cyhalothrin seems to have no practical value for the survival of either of the coccinellid species. Contrastingly, using half instead of the full field rate of thiacloprid may enhance the chances of survival in L1, L2, and L4 larvae of both species. Of all developmental stages tested, the survival dynamics of the adults of either species are closest to one another, whereas the apparent difference in the species response to the dose rate of thiacloprid was found in the L4 stage.
Jacek Twardowski; Michał Hurej; Kamila Twardowska. Effect of Ingestion Exposure of Selected Insecticides on Coccinella septempunctata and Harmonia axyridis (Coleoptera: Coccinellidae). Insects 2021, 12, 434 .
AMA StyleJacek Twardowski, Michał Hurej, Kamila Twardowska. Effect of Ingestion Exposure of Selected Insecticides on Coccinella septempunctata and Harmonia axyridis (Coleoptera: Coccinellidae). Insects. 2021; 12 (5):434.
Chicago/Turabian StyleJacek Twardowski; Michał Hurej; Kamila Twardowska. 2021. "Effect of Ingestion Exposure of Selected Insecticides on Coccinella septempunctata and Harmonia axyridis (Coleoptera: Coccinellidae)." Insects 12, no. 5: 434.
Rare carnivorous plants representing the genus Sarracenia are perceived as very interesting to scientists involved in various fields of botany, ethnobotany, entomology, phytochemistry and others. Such high interest is caused mainly by the unique capacity of Sarracenia spp. to attract insects. Therefore, an attempt to develop a protocol for micropropagation of the Sarracenia alata (Alph.Wood) Alph.Wood, commonly named yellow trumpets, and to identify the specific chemical composition of volatile compounds of this plant in vitro and ex vivo was undertaken. Thus, the chemical volatile compounds excreted by the studied plant to attract insects were recognized with the application of the headspace solid-phase microextraction (HS-SPME) coupled with the GC-MS technique. As the major volatile compounds (Z)-3-hexen-1-ol (16.48% ± 0.31), (E)-3-hexen-1-ol acetate (19.99% ± 0.01) and β-caryophyllene (11.30% ± 0.27) were identified. Further, both the chemical assumed to be responsible for attracting insects, i.e., pyridine (3.10% ± 0.07), and whole plants were used in in vivo bioassays with two insect species, namely Drosophila hydei and Acyrthosiphon pisum. The obtained results bring a new perspective on the possibilities of cultivating rare carnivorous plants in vitro since they are regarded as a valuable source of bioactive volatile compounds, as including ones with repellent or attractant activity.
Jacek Łyczko; Jacek Twardowski; Bartłomiej Skalny; Renata Galek; Antoni Szumny; Iwona Gruss; Dariusz Piesik; Sebastian Sendel. Sarracenia alata (Alph.Wood) Alph.Wood Microcuttings as a Source of Volatiles Potentially Responsible for Insects’ Respond. Molecules 2021, 26, 2406 .
AMA StyleJacek Łyczko, Jacek Twardowski, Bartłomiej Skalny, Renata Galek, Antoni Szumny, Iwona Gruss, Dariusz Piesik, Sebastian Sendel. Sarracenia alata (Alph.Wood) Alph.Wood Microcuttings as a Source of Volatiles Potentially Responsible for Insects’ Respond. Molecules. 2021; 26 (9):2406.
Chicago/Turabian StyleJacek Łyczko; Jacek Twardowski; Bartłomiej Skalny; Renata Galek; Antoni Szumny; Iwona Gruss; Dariusz Piesik; Sebastian Sendel. 2021. "Sarracenia alata (Alph.Wood) Alph.Wood Microcuttings as a Source of Volatiles Potentially Responsible for Insects’ Respond." Molecules 26, no. 9: 2406.
Biota play major roles in soil function and are highly sensitive to any disturbances including land degradations. The objective of research was to evaluate the effectiveness of different methods used to determine soil quality in sandy soil, in particular to compare the microarthropod and vegetation indices. The following soil fauna indices were used: Collembola and Acari abundance, QBS-ar index, decomposition rate, feeding activity. The Ellenberg index was used as a vegetation indicator, in which the response to pH, nutrients, and moisture was analysed. We based on an experiment conducted at a former military site in the Czech Republic. Soil quality was determined at two sites which differ slightly in nutrient content. Collembola abundance, feeding activity, and QBS-ar index were highly sensitive to minor differences in nutrients. In the group of vegetation indices, only the response to pH was significant. All analysed indices showed better biological quality in soils with higher nutrient content. Collembola were positively correlated with all vegetation indicators, which may indicate a close relation of springtails to certain plant species or similar habitat requirements. Finally, we indicate the usefulness of biological indicators for monitoring the quality of soil, which can be adopted when making various decisions concerning land use.
Iwona Gruss; Jacek Twardowski; Diana Nebeská; Josef Trögl; Tatyana Stefanovska; Valentina Pidlisnyuk; Iva Machová. Microarthropods and vegetation as biological indicators of soil quality studied in the poor sandy stand at former military sites. 2021, 1 .
AMA StyleIwona Gruss, Jacek Twardowski, Diana Nebeská, Josef Trögl, Tatyana Stefanovska, Valentina Pidlisnyuk, Iva Machová. Microarthropods and vegetation as biological indicators of soil quality studied in the poor sandy stand at former military sites. . 2021; ():1.
Chicago/Turabian StyleIwona Gruss; Jacek Twardowski; Diana Nebeská; Josef Trögl; Tatyana Stefanovska; Valentina Pidlisnyuk; Iva Machová. 2021. "Microarthropods and vegetation as biological indicators of soil quality studied in the poor sandy stand at former military sites." , no. : 1.
Buckwheat husks are used in many therapeutic products such as pillows, mattresses, seats, etc. This material is proposed by producers for example for discopathy, back pain and head vasomotor disorders. Our studies evaluated the impact of using cotton mattresses with buckwheat husk fillings on people’s health condition. The main research was carried out on the group of 60 people divided into 3 groups (1—people with skeletal system problems, 2—people spending a lot of time lying with the probability of pressure ulcer formation and 3—healthy people). In addition, different tests have been carried out on the possibility of colonization of mattresses by fungi, bacteria and arthropod pests, and rheological, chemical and flammability tests. The research material in the form of buckwheat husks was tested in a diverse way. All tests indicate high usefulness of husks for therapeutic activity. This material was contaminated with fungi, bacteria and pests at a very low level, related to the natural colonization of buckwheat nuts during harvest and storage. The quality of the husks was also confirmed in rheological, chemical and flammability studies. Finally, this has also been confirmed in surveys conducted on people with health problems. The analyses show that the buckwheat husk is an excellent material that can be used to fill prophylactic mattresses. This has been confirmed by the results of laboratory tests and opinions of respondents using mattresses filled with buckwheat husk.
Agnieszka Nawirska-Olszańska; Adam Figiel; Elżbieta Pląskowska; Jacek Twardowski; Elżbieta Gębarowska; Alicja Kucharska; Anna Sokół-Łętowska; Radosław Spychaj; Krzysztof Lech; Marek Liszewski. Qualitative and Quantitative Assessment of Buckwheat Husks as a Material for Use in Therapeutic Mattresses. International Journal of Environmental Research and Public Health 2021, 18, 1949 .
AMA StyleAgnieszka Nawirska-Olszańska, Adam Figiel, Elżbieta Pląskowska, Jacek Twardowski, Elżbieta Gębarowska, Alicja Kucharska, Anna Sokół-Łętowska, Radosław Spychaj, Krzysztof Lech, Marek Liszewski. Qualitative and Quantitative Assessment of Buckwheat Husks as a Material for Use in Therapeutic Mattresses. International Journal of Environmental Research and Public Health. 2021; 18 (4):1949.
Chicago/Turabian StyleAgnieszka Nawirska-Olszańska; Adam Figiel; Elżbieta Pląskowska; Jacek Twardowski; Elżbieta Gębarowska; Alicja Kucharska; Anna Sokół-Łętowska; Radosław Spychaj; Krzysztof Lech; Marek Liszewski. 2021. "Qualitative and Quantitative Assessment of Buckwheat Husks as a Material for Use in Therapeutic Mattresses." International Journal of Environmental Research and Public Health 18, no. 4: 1949.
Increasing agricultural biodiversity can significantly affect many beneficial arthropods including rove beetles. They are important organisms in a wide range of habitats including agricultural and can be valuable agents in biological control. In this preliminary study we looked into how a floristically rich habitat for rove beetles functions in comparison to an adjacent maize crop which provides an unsuitable habitat for a majority of beneficial organisms. We assumed that the sowing of plant mixture might add to the richness of species and produce an abundance of rove beetles, and therefore increase their role in biological pest control. Beetles were trapped over two vegetation seasons in the experiment performed in Poland in 2013–2014. Individuals were identified to species level and classified according to their trophic group. In general, a more botanically diverse habitat resulted in more species rich beetle populations. A significantly greater number of species and individuals of beetles occurred in the plant mixture in comparison to the maize crop. The abundance and species richness increased after one year in both treatments. This might suggest that the positive effect of a more diverse habitat carries over into subsequent vegetation seasons. The species similarity coefficient indicates periodic migration of beetles from the plant mixture to maize crop. Considering trophic preferences, significantly more predators and fungivores occurred in more diverse habitats, while more parasitoids occurred in the maize crop. In conclusion, mixtures of flowering plants can increase rove beetle assemblages in arable crops.
Jacek Piotr Twardowski; Iwona Gruss; Michał Hurej. Does vegetation complexity within intensive agricultural landscape affect rove beetle (Coleoptera: Staphylinidae) assemblages? Biocontrol Science and Technology 2019, 30, 116 -131.
AMA StyleJacek Piotr Twardowski, Iwona Gruss, Michał Hurej. Does vegetation complexity within intensive agricultural landscape affect rove beetle (Coleoptera: Staphylinidae) assemblages? Biocontrol Science and Technology. 2019; 30 (2):116-131.
Chicago/Turabian StyleJacek Piotr Twardowski; Iwona Gruss; Michał Hurej. 2019. "Does vegetation complexity within intensive agricultural landscape affect rove beetle (Coleoptera: Staphylinidae) assemblages?" Biocontrol Science and Technology 30, no. 2: 116-131.
Biochar was reported to improve the chemical and physical properties of soil. The use of biochar as a soil amendment have been found to improve the soil structure, increase the porosity, decrease bulk density, as well increase aggregation and water retention. Knowing that springtails (Collembola) are closely related to soil properties, the effect of biochar on morphological diversity of these organisms was evaluated. The main concept was the classification of springtails to the life-form groups and estimation of QBS-c index (biological quality index based on Collembola species). We conducted the field experiment where biochar was used as soil amendment in oilseed rape and maize crops. Wood-chip biochar from low-temperature (300 °C) flash pyrolysis was free from PAH (polycyclic aromatic hydrocarbon) and other toxic components. Results showed that all springtail life-form groups (epedaphic, hemiedaphic, and euedaphic) were positively affected after biochar application. The QBS-c index, which relates to springtails’ adaptation to living in the soil, was higher in treatments where biochar was applied. We can recommend the use of Collembola’s morphological diversity as a good tool for the bioindication of soil health.
Iwona Gruss; Jacek P. Twardowski; Agnieszka Latawiec; Jolanta Królczyk; Agnieszka Medyńska-Juraszek. The Effect of Biochar Used as Soil Amendment on Morphological Diversity of Collembola. Sustainability 2019, 11, 5126 .
AMA StyleIwona Gruss, Jacek P. Twardowski, Agnieszka Latawiec, Jolanta Królczyk, Agnieszka Medyńska-Juraszek. The Effect of Biochar Used as Soil Amendment on Morphological Diversity of Collembola. Sustainability. 2019; 11 (18):5126.
Chicago/Turabian StyleIwona Gruss; Jacek P. Twardowski; Agnieszka Latawiec; Jolanta Królczyk; Agnieszka Medyńska-Juraszek. 2019. "The Effect of Biochar Used as Soil Amendment on Morphological Diversity of Collembola." Sustainability 11, no. 18: 5126.
The aim of this research was to assess the effect of soil contamination with titanium (Ti) and iron (Fe) at military sites in Ukraine using the avoidance and reproduction tests with Folsomia candida (springtail). The soil used for the tests was sampled in 2017 from Dolyna, Ivano-Frankivsk region, Ukraine from two plots, namely a contaminated and a control site. The sample site is a former military site previously used for tank training. At the control site mainly the concentrations of Ti and Fe were exceeded. The control soil was free from contamination. The avoidance test and reproduction test were conducted with the use of springtail species F. candida. The following nine levels of contamination with heavy metals were established: 1%, 1.5%, 5%, 10%, 15%, 25%, 50%, 75% and 100%. The duration of the avoidance test was 7 days, and that of the reproduction test was 28 days. Overall, the results show that the avoidance and reproduction tests with collembolans have the potential to be used as screening tools in an ecological risk assessment of heavy metals. In the avoidance test, the concentrations from 1.5 to 100% significantly decreased the number of F. candida in the contamination site in comparison to the control site. At the same time, avoidance was not observed in the first concentration (1%). According to the reproduction test, the negative effect on the number of F. candida juveniles was observed beginning at the 10% dose. The half maximal effective concentration (EC50) for the avoidance test was 50.12%, while that for the reproduction test was 22.39%. The contamination with heavy metals at the military areas indicated the short- and long-term toxicity risk on the springtail F. candida.
Iwona Gruss; Tatyana Stefanovska; Jacek Twardowski; Valentina Pidlisnyuk; Pavlo Shapoval. The ecological risk assessment of soil contamination with Ti and Fe at military sites in Ukraine: avoidance and reproduction tests with Folsomia candida. Reviews on Environmental Health 2019, 34, 303 -307.
AMA StyleIwona Gruss, Tatyana Stefanovska, Jacek Twardowski, Valentina Pidlisnyuk, Pavlo Shapoval. The ecological risk assessment of soil contamination with Ti and Fe at military sites in Ukraine: avoidance and reproduction tests with Folsomia candida. Reviews on Environmental Health. 2019; 34 (3):303-307.
Chicago/Turabian StyleIwona Gruss; Tatyana Stefanovska; Jacek Twardowski; Valentina Pidlisnyuk; Pavlo Shapoval. 2019. "The ecological risk assessment of soil contamination with Ti and Fe at military sites in Ukraine: avoidance and reproduction tests with Folsomia candida." Reviews on Environmental Health 34, no. 3: 303-307.
Aeolothripsintermedius is a thrips predator often found in phytocoenoses worldwide. Both the adults and larvae of this species prey on small invertebrates, including phytophagous species from Thysanoptera group. The aim of this study was to determine the morphological variability of the A. intermedius relative to the locality and, indirectly, to the species of host plant. Insects were collected from five localities in southwest Poland and five different host plants. For each of the sexes, six morphometric features were assessed: body length, length of antennae, wing length, head length, head width and length of pronotum. Additionally, the body mass for each individual was estimated. The findings revealed that in females, both the locality and host plant had a significant impact on almost all of these features. In males, the morphometric features under study correlated strongly with locality and only moderately with the host plant. Certain differences were observed between males and females, mainly in terms of antennae length. The results show that A. intermedius exhibits significant variability in this respect, which is indicative of the species' phenotypic plasticity. The body length was the trait with the most distinct response to the locality and host plant.
Iwona Gruss; Jacek Piotr Twardowski; Marcin Cierpisz. The Effects of Locality and Host Plant on the Body Size of Aeolothrips intermedius (Thysanoptera: Aeolothripidae) in the Southwest of Poland. Insects 2019, 10, 266 .
AMA StyleIwona Gruss, Jacek Piotr Twardowski, Marcin Cierpisz. The Effects of Locality and Host Plant on the Body Size of Aeolothrips intermedius (Thysanoptera: Aeolothripidae) in the Southwest of Poland. Insects. 2019; 10 (9):266.
Chicago/Turabian StyleIwona Gruss; Jacek Piotr Twardowski; Marcin Cierpisz. 2019. "The Effects of Locality and Host Plant on the Body Size of Aeolothrips intermedius (Thysanoptera: Aeolothripidae) in the Southwest of Poland." Insects 10, no. 9: 266.
Robert Rutkowski; Aleksandra Gwiazdowska; Piotr Ceryngier; Agnieszka Kosewska; Przemysław Szymroszczyk; Kamila Twardowska; Jacek Twardowski. Microsatellite Polymorphism Suggests High Genetic Diversity But Disrupted Gene Flow in the Two-Spot Ladybird Adalia bipunctata (Linnaeus, 1758) (Coleoptera: Coccinellidae) Populations from Diverse Environments. Annales Zoologici 2019, 69, 477 .
AMA StyleRobert Rutkowski, Aleksandra Gwiazdowska, Piotr Ceryngier, Agnieszka Kosewska, Przemysław Szymroszczyk, Kamila Twardowska, Jacek Twardowski. Microsatellite Polymorphism Suggests High Genetic Diversity But Disrupted Gene Flow in the Two-Spot Ladybird Adalia bipunctata (Linnaeus, 1758) (Coleoptera: Coccinellidae) Populations from Diverse Environments. Annales Zoologici. 2019; 69 (2):477.
Chicago/Turabian StyleRobert Rutkowski; Aleksandra Gwiazdowska; Piotr Ceryngier; Agnieszka Kosewska; Przemysław Szymroszczyk; Kamila Twardowska; Jacek Twardowski. 2019. "Microsatellite Polymorphism Suggests High Genetic Diversity But Disrupted Gene Flow in the Two-Spot Ladybird Adalia bipunctata (Linnaeus, 1758) (Coleoptera: Coccinellidae) Populations from Diverse Environments." Annales Zoologici 69, no. 2: 477.
Biochar as a carbon-rich highly porous substance has been proposed for use in agriculture and horticulture as a soil amendment. One of the main concerns of this application of biochar is its potential contamination with heavy metals (HMs) and polycyclic aromatic hydrocarbons. The aim of this research was to access the environmental risk of biochar used as a soil amendment on soil mesofauna (mites and springtails). We conducted both field and laboratory experiments with the use of wood-chip biochar from low-temperature (300 °C) flash pyrolysis. Biochar was free from polycyclic aromatic hydrocarbons (PAH), and the concentration of all tested toxic compounds was very low or even under the level of detection. Both the results of field and laboratory studies show no toxic effects on soil mesofauna. In the field studies, the biochar application of 50 t/ha in maize and oilseed rape crops significantly increased the mean number of mesofauna. This change probably resulted from improved soil chemical properties (in particular organic carbon content and cation exchange capacity) upon biochar addition. The results of the avoidance test with the use of springtail species Folsomia candida showed the possible short-term toxicity risk from a dose of 5%. The results of the reproduction test indicate the negative response of F. candida from the rate of 25% (higher than the field dose, which corresponds to 10% in laboratory tests). The reason for the short-term toxicity might be the considerable increase in soil pH after biochar addition. To our knowledge, this is the first study that has looked so widely into the effect of biochar on soil mesofauna. We encourage further studies into the risk assessment of biochar on soil organisms in both a controlled laboratory environment and in the open field.
Iwona Gruss; Jacek Twardowski; Agnieszka Latawiec; Agnieszka Medyńska-Juraszek; Jolanta Królczyk. Risk assessment of low-temperature biochar used as soil amendment on soil mesofauna. Environmental Science and Pollution Research 2019, 26, 18230 -18239.
AMA StyleIwona Gruss, Jacek Twardowski, Agnieszka Latawiec, Agnieszka Medyńska-Juraszek, Jolanta Królczyk. Risk assessment of low-temperature biochar used as soil amendment on soil mesofauna. Environmental Science and Pollution Research. 2019; 26 (18):18230-18239.
Chicago/Turabian StyleIwona Gruss; Jacek Twardowski; Agnieszka Latawiec; Agnieszka Medyńska-Juraszek; Jolanta Królczyk. 2019. "Risk assessment of low-temperature biochar used as soil amendment on soil mesofauna." Environmental Science and Pollution Research 26, no. 18: 18230-18239.
Urbanised areas are capable of exerting a strong impact on the distribution of genetic diversity within populations of animals. Urban invertebrate species are currently either relicts from pre-urban ecosystems, or have immigrated during or following urbanisation. We analysed 10 microsatellite loci in 196 specimens of the harlequin ladybird (Harmonia axyridis), an invasive species in Poland sampled in three of the country's cities. Of Asiatic origin, this ladybird has been spreading through other continents, including Europe. Results showed that the Polish cities are being invaded by harlequin ladybirds that are uniform in terms of their genetic pool, with no significant genetic differentiation present between the urban populations investigated. Rapid spread and what are probably the large numbers of individuals colonising new areas allow this species to maintain high genetic diversity and avoid bottleneck effects. However, we suggest that urban populations differ in terms of genetic diversity. The highest genetic diversity characterises the most recently invaded area of Olsztyn in the north of Poland. Genetic data further suggest that this population could be still in an expansion phase. The earliest colonising population in Wrocław exhibits signs of a Wahlund effect, suggesting that gene flow among local groups within this urban area could be disturbed or impaired. We conclude that, in the case of an urban population of the harlequin ladybird, successful colonisation is followed by the onset of a decline in genetic diversity, with isolation between local sampling sites appearing. Further studies are required, however, if this process is to be elucidated.
Robert Rutkowski; Agnieszka Kosewska; Piotr Ceryngier; Sebastian Szczepański; Wioletta Wawer; Kamila Twardowska; Jacek Twardowski; © Museum and Institute of Zoology PAS. Genetic Diversity of an Invasive Invertebrate in an Urban Environment, as Exemplified by the HarlequinLadybird HarmoniaAxyridis (Pallas, 1773). Annales Zoologici 2017, 67, 759 -772.
AMA StyleRobert Rutkowski, Agnieszka Kosewska, Piotr Ceryngier, Sebastian Szczepański, Wioletta Wawer, Kamila Twardowska, Jacek Twardowski, © Museum and Institute of Zoology PAS. Genetic Diversity of an Invasive Invertebrate in an Urban Environment, as Exemplified by the HarlequinLadybird HarmoniaAxyridis (Pallas, 1773). Annales Zoologici. 2017; 67 (4):759-772.
Chicago/Turabian StyleRobert Rutkowski; Agnieszka Kosewska; Piotr Ceryngier; Sebastian Szczepański; Wioletta Wawer; Kamila Twardowska; Jacek Twardowski; © Museum and Institute of Zoology PAS. 2017. "Genetic Diversity of an Invasive Invertebrate in an Urban Environment, as Exemplified by the HarlequinLadybird HarmoniaAxyridis (Pallas, 1773)." Annales Zoologici 67, no. 4: 759-772.
Grasslands, especially those under ecological management (i.e. mowing, and grazing without fertilizers and chemicals), have significant importance for many arthropods, including ground beetles. We studied the abundance and species diversity of Carabidae of four uphill grasslands (West Sudety Mountains, Poland) under different management intensity: cattle grazing (one or four times per year), mowing, and alternatively managed (grazing/mowing). Beetles were collected using pitfall traps during three whole grazing seasons, i.e. from April to October in 2007–2009. The most frequent species of beetles, on each of the plots, were predators Poecilus cupreus, Calathus fuscipes and Nebria brevicollis. Sixtyfour ground beetle species were found altogether. Species richness ranged from 42 to 47, with the mean number of individuals per trap day-1 from 0.006 to 0.018. In the years of the study the number of ground beetles and their species diversity were higher on meadows mown once per year and alternatively managed grasslands as compared with grazed sites. Therefore, the simplified, organic way of agricultural production with reduced mowing or moving combined with grazing can be considered as appropriate in preserving the biodiversity of the grasslands in mountainous regions.
Jacek Piotr Twardowski; Karolina Pastuszko; Michał Hurej; Iwona Gruss. Effect of Different Management Practices on Ground Beetle (Coleoptera: Carabidae) Assemblages of Uphill Grasslands. Polish Journal of Ecology 2017, 65, 400 -409.
AMA StyleJacek Piotr Twardowski, Karolina Pastuszko, Michał Hurej, Iwona Gruss. Effect of Different Management Practices on Ground Beetle (Coleoptera: Carabidae) Assemblages of Uphill Grasslands. Polish Journal of Ecology. 2017; 65 (3):400-409.
Chicago/Turabian StyleJacek Piotr Twardowski; Karolina Pastuszko; Michał Hurej; Iwona Gruss. 2017. "Effect of Different Management Practices on Ground Beetle (Coleoptera: Carabidae) Assemblages of Uphill Grasslands." Polish Journal of Ecology 65, no. 3: 400-409.
Linseed, one of the oldest cultivated crops, is again gaining in importance, mainly due to its nutritional benefits and biomedical applications. Therefore, it is expected that herbivores will also exist in greater abundance. Among them the flea beetle,Aphthona euphorbiaeSchrank andLongitarsus parvulusPaykull are considered to be serious pests of flax grown for fibre and seeds in Europe. The aim of this study was to determine flax flea beetles’ abundance, species richness and seasonal dynamics on linseed grown at different densities. It was expected that linseed seeding density can significantly affect flea beetle populations. The experiment was carried out in Lower Silesia, Poland, from 2011 to 2013. A genetically modified type of linseed overproducing flavonoids was used. Flea beetles and the damages they caused were determined on plants and also a sweep net was used for the collection of adult beetles. During the three years of the study 15 species of flea beetles were identified from oil flax plants, withA. euphorbiaeandL. parvulusbeing dominant. In terms of the total catch, the tendency was for beetle numbers to decrease with increasing plant density. Flax flea beetles feeding on linseed plants, irrespective of plant density, had two peaks of abundance. The first peak was lower and occurred in June, when plants were at the blooming stage. This peak was caused by overwintering adults who colonized crops in spring. The second, higher peak of abundance was recorded in the second half of July, when plants were at the ripening stage. This peak was formed by adults of the new generation. Each year, at the higher population peak of abundance, the flea beetles were most numerous on plants grown at the lowest density. There was one period, lasting either from mid-May to the first few days of June, or from the beginning of June to mid-June, during which the number of holes and damage on plants of each treatment were highest. During the three years of the study there were several cases of significantly higher numbers of flea beetle feeding symptoms on plants grown at the lowest density as compared to the medium and highest densities.
Jacek Twardowski; Michał Hurej; Radosław Ścibior; Andrzej Kotecki. The effect of different seeding densities of linseed (Linum usitatissimum L.) on flax flea beetles (Coleoptera: Chrysomelidae). Journal of Plant Protection Research 2017, 57, 158 -166.
AMA StyleJacek Twardowski, Michał Hurej, Radosław Ścibior, Andrzej Kotecki. The effect of different seeding densities of linseed (Linum usitatissimum L.) on flax flea beetles (Coleoptera: Chrysomelidae). Journal of Plant Protection Research. 2017; 57 (2):158-166.
Chicago/Turabian StyleJacek Twardowski; Michał Hurej; Radosław Ścibior; Andrzej Kotecki. 2017. "The effect of different seeding densities of linseed (Linum usitatissimum L.) on flax flea beetles (Coleoptera: Chrysomelidae)." Journal of Plant Protection Research 57, no. 2: 158-166.
Jacek Twardowski; Iwona Gruss; Leszek Kordas. Effects of soil regeneration methods on beneficial mesofauna in a spring triticale field. Journal of Central European Agriculture 2017, 18, 616 -631.
AMA StyleJacek Twardowski, Iwona Gruss, Leszek Kordas. Effects of soil regeneration methods on beneficial mesofauna in a spring triticale field. Journal of Central European Agriculture. 2017; 18 (3):616-631.
Chicago/Turabian StyleJacek Twardowski; Iwona Gruss; Leszek Kordas. 2017. "Effects of soil regeneration methods on beneficial mesofauna in a spring triticale field." Journal of Central European Agriculture 18, no. 3: 616-631.
The aim of this study was to determine thrips abundance, species composition and seasonal dynamics on two genetically modified types of linseed, i.e., overproducing flavonoids, overproducing glycoside derivatives of phenylpropanoids and the respective non-modified, control plants with concentrations of phenylpropanoids typical for this variety. The experiment was conducted near Wrocław, Poland, in 2011–2013. For the determination of thrips species composition, 10 plants were collected from plots when linseed plants were at the full blooming stage. A sweep net was also used to study thrips on flax. In the three years of the study, 33 species and 2 genera of Thysanoptera were identified on oil flax plants. Irrespective of the type of linseed used, Thrips angusticeps was the dominant species. In the three years of the study, the lower numbers of thrips occurred on the genetically modified types of flax, i.e., the ones overproducing flavonoids or overproducing glycoside derivatives of phenylpropanoids than on the non-transformed plants. Fewer species of Thysanoptera were identified on oil flax overproducing flavonoids in comparison with the control plants.
Michal Hurej; Halina Kucharczyk; Jacek Piotr Twardowski; Andrzej Kotecki. Thrips (Thysanoptera) associated with two genetically modified types of linseed (Linum usitatissimum L.). Journal of Plant Diseases and Protection 2016, 124, 81 -91.
AMA StyleMichal Hurej, Halina Kucharczyk, Jacek Piotr Twardowski, Andrzej Kotecki. Thrips (Thysanoptera) associated with two genetically modified types of linseed (Linum usitatissimum L.). Journal of Plant Diseases and Protection. 2016; 124 (1):81-91.
Chicago/Turabian StyleMichal Hurej; Halina Kucharczyk; Jacek Piotr Twardowski; Andrzej Kotecki. 2016. "Thrips (Thysanoptera) associated with two genetically modified types of linseed (Linum usitatissimum L.)." Journal of Plant Diseases and Protection 124, no. 1: 81-91.
Iwona Gruss; Jacek Twardowski. The assemblages of soil-dwelling springtails (Collembola) in winter rye under long-term monoculture and crop rotation. Zemdirbyste-Agriculture 2016, 103, 159 -166.
AMA StyleIwona Gruss, Jacek Twardowski. The assemblages of soil-dwelling springtails (Collembola) in winter rye under long-term monoculture and crop rotation. Zemdirbyste-Agriculture. 2016; 103 (2):159-166.
Chicago/Turabian StyleIwona Gruss; Jacek Twardowski. 2016. "The assemblages of soil-dwelling springtails (Collembola) in winter rye under long-term monoculture and crop rotation." Zemdirbyste-Agriculture 103, no. 2: 159-166.
The monoculture cropping system causes significant changes within the soil ecosystem, which constitutes a habitat for soil-dwelling springtails. Focusing on the response of soil fauna to 90 years of potato cultivation in monoculture the study investigates the abundance and diversity of soil-dwelling springtails, considering changes in the soil environment in relation to five-crop rotation. Another point was the soil quality evaluation using Collembola as bioindicators (QBS-c index). A long-term monoculture experiment was established in Poland in 1923 and has continued uninterruptedly to the present time. Soil samples were taken over a period of three years (2011–2013) to determine collembolan abundance and composition, as well as physical and chemical soil properties. The study demonstrated that there were greater numbers of Collembola in the long-term monoculture of potatoes, especially before planting time, compared to numbers in a five-field crop rotation. At the same time apparently greater species diversity was found in potato culture within crop rotation. The biological indicator of soil quality based on the occurrence of springtails (QBS-c) has proved useful in assessing changes in soil caused by agrotechnical activities. This index indicated better biological soil quality in the five-field rotation system compared to monoculture.
Jacek Piotr Twardowski; Michał Hurej; Iwona Gruss. Diversity and abundance of springtails (Hexapoda: Collembola) in soil under 90-year potato monoculture in relation to crop rotation. Archives of Agronomy and Soil Science 2016, 1 -11.
AMA StyleJacek Piotr Twardowski, Michał Hurej, Iwona Gruss. Diversity and abundance of springtails (Hexapoda: Collembola) in soil under 90-year potato monoculture in relation to crop rotation. Archives of Agronomy and Soil Science. 2016; ():1-11.
Chicago/Turabian StyleJacek Piotr Twardowski; Michał Hurej; Iwona Gruss. 2016. "Diversity and abundance of springtails (Hexapoda: Collembola) in soil under 90-year potato monoculture in relation to crop rotation." Archives of Agronomy and Soil Science , no. : 1-11.
Michał Hurej; Radosław Ścibior; Jacek Piotr Twardowski; Andrzej Kotecki. Flea beetles (Coleoptera, Chrysomelidae, Alticinae) on genetically modified linseed (Linum usitatissimum L.). Progress in Plant Protection 2016, 1 .
AMA StyleMichał Hurej, Radosław Ścibior, Jacek Piotr Twardowski, Andrzej Kotecki. Flea beetles (Coleoptera, Chrysomelidae, Alticinae) on genetically modified linseed (Linum usitatissimum L.). Progress in Plant Protection. 2016; ():1.
Chicago/Turabian StyleMichał Hurej; Radosław Ścibior; Jacek Piotr Twardowski; Andrzej Kotecki. 2016. "Flea beetles (Coleoptera, Chrysomelidae, Alticinae) on genetically modified linseed (Linum usitatissimum L.)." Progress in Plant Protection , no. : 1.
The aim of the study was a comparison of species composition and abundance of two insect families, i.e. ground beetles, Carabidae and hoverflies, Syrphidae, occurring on a mix of flowering plants at the two localities in western part of Poland. The studies were conducted in Jarosławiec (Wielkopolska province) and Pągów (Opole province), on the experimental fields belonging to BASF Polska Sp. z o.o., in 2012–2013. Pitfall traps were used for collecting Carabidae while entomological nets as well as yellow traps were used for collecting Syrphidae ecological analyses of ground beetles and hoverflies assemblages showed significant differences between the two compared localities, in particular qualitative evaluation. Celem badań było porównanie składu gatunkowego i liczebności dwóch rodzin owadów, tj. chrząszczy Carabidae oraz muchówek Syrphidae w mieszance kwitnących roślin, w dwóch miejscowościach zachodniej Polski. Badania prowadzono w Jarosławcu (województwo wielkopolskie) i w Pągowie (województwo opolskie), na polach doświadczalnych należących do firmy BASF Polska Sp. z o.o. w latach 2012–2013. Do odłowów Carabidae stosowano pułapki Barbera, natomiast Syrphidae odławiano za pomocą czerpaka entomologicznego i żółtych pułapek Moerickego. W charakterystyce ekologicznej zgrupowań biegaczowatych oraz bzygowatych wykazano znaczne różnice między obiema porównywanymi miejscowościami, zwłaszcza pod względem jakościowym.
Michał Hurej; Jacek Twardowski; Janusz Nowacki; Paweł Sienkiewicz; Paweł Trzciński; Witold Łykowski. The comparison of the occurrence of the beneficial insects from Carabidae and Syrphidae families on a mix of flowering plants at two localities of Poland. Progress in Plant Protection 2015, 55, 30 -39.
AMA StyleMichał Hurej, Jacek Twardowski, Janusz Nowacki, Paweł Sienkiewicz, Paweł Trzciński, Witold Łykowski. The comparison of the occurrence of the beneficial insects from Carabidae and Syrphidae families on a mix of flowering plants at two localities of Poland. Progress in Plant Protection. 2015; 55 (1):30-39.
Chicago/Turabian StyleMichał Hurej; Jacek Twardowski; Janusz Nowacki; Paweł Sienkiewicz; Paweł Trzciński; Witold Łykowski. 2015. "The comparison of the occurrence of the beneficial insects from Carabidae and Syrphidae families on a mix of flowering plants at two localities of Poland." Progress in Plant Protection 55, no. 1: 30-39.
The aim of this study was to determine thrips abundance, species composition, sex ratio and seasonal dynamics of these insects on two morphological forms of Andean lupin (epigonal and semiepigonal). Thrips were studied in the lupine plants sown at two dates at the Experimental Research Station at Pawłowice, near Wrocław, Lower Silesia, Poland, during two growing seasons (2011-2012). The experiment was designed as a split-plot with four replicates for each morphological form and time of sowing. For the determination of thrips species’ composition, plants were collected from the central part of each plot when lupin was at the full blooming stage. In the laboratory, plants were shaken over a sheet of white paper. Once in each season thrips were also collected with a sweep net. In the laboratory larvae and adults were identified to species level and separated into males and females. During the whole lupin growing season, insects were also counted weekly on 10 consecutive plants in the middle row of each plot. Frankliniella intonsa, Thrips major and Aeolothrips intermedius were the dominant species in the full blooming stage of both semiepigonal and epigonal forms of Andean lupin. Thrips tabaci also occurred in greater numbers. There were no significant differences between numbers of thrips and number of species occurring on semiepigonal and epigonal plants sown at the same time. In the most numerous species, like F. intonsa and T. major, mainly females occurred in their population. In the population of A. intermedius males were abundant. Thrips occurring in Lupinus mutabilis, irrespective of the used form of lupin or sowing time, had one peak of abundance, i.e., the last ten days of June and the first ten days of July, when plants were at the blooming stage.
Michał Hurej; Halina Kucharczyk; Jacek Twardowski; Andrzej Kotecki. Thrips (Thysanoptera) associated with two morphological forms of Andean lupin (Lupinus mutabilis). Biologia 2015, 70, 1 .
AMA StyleMichał Hurej, Halina Kucharczyk, Jacek Twardowski, Andrzej Kotecki. Thrips (Thysanoptera) associated with two morphological forms of Andean lupin (Lupinus mutabilis). Biologia. 2015; 70 (7):1.
Chicago/Turabian StyleMichał Hurej; Halina Kucharczyk; Jacek Twardowski; Andrzej Kotecki. 2015. "Thrips (Thysanoptera) associated with two morphological forms of Andean lupin (Lupinus mutabilis)." Biologia 70, no. 7: 1.