European Journal of Biological Research http://www.journals.tmkarpinski.com/index.php/ejbr <p><strong>ISSN: 2449-8955</strong><br><strong><a title="MNiSW points: 11" href="http://www.nauka.gov.pl/g2/oryginal/2016_12/c5c2fcb0c283a9eb3d1081020fd3178c.pdf" target="_blank" rel="noopener">MNiSW points 2016: 11<br></a></strong><strong><a title="ICV: 100.00" href="http://journals.indexcopernicus.com/European+Journal+of,p24783440,3.html" target="_blank" rel="noopener">ICV 2018: 100.00</a></strong><br><strong>Acceptance rate: 2016 - 64%, 2017 - 56%</strong><br><strong>Google-based IF (2017): 0.586&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; h-index: 11</strong></p> en-US ejbr@tmkarpinski.lh.pl (Joanna Bródka) ejbr@tmkarpinski.lh.pl (Joanna Bródka) Mon, 04 Nov 2019 22:53:11 +0100 OJS 3.1.0.1 http://blogs.law.harvard.edu/tech/rss 60 Essential oils as green pesticides of stored grain insects http://www.journals.tmkarpinski.com/index.php/ejbr/article/view/167 <p>Essential oils are naturally occurring phytochemicals produced as secondary metabolite in plants. These are complex mixtures of volatile compounds and generally contain twenty to sixty individual compounds in different concentrations. They are lipophilic in nature and have density lower than water. These interfere with basic metabolic, biochemical, physiological and behavioral functions of insects. Several essential oils and its constituents have been established for their repellent, antifeedant, ovicidal, oviposition inhibitory and developmental inhibitory activities in insects. These insecticides probably interfere with the respiratory and nervous system of the insect to exert its actions. These essential oils provide an alternative source of insect control agents because they contain a range of bioactive chemicals, most of which are selective and have little or no harmful effect on the environment and the non-target organisms including human. Essential oils based formulations can be used as alternative tools in stored-grain insect management.</p> <p><strong>DOI: <a href="http://dx.doi.org/10.5281/zenodo.3528366">http://dx.doi.org/10.5281/zenodo.3528366</a></strong></p> Mukesh Kumar Chaubey ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc/4.0 http://www.journals.tmkarpinski.com/index.php/ejbr/article/view/167 Mon, 04 Nov 2019 22:53:36 +0100 Soil mites (Acari) of natural areas of a former military training field in Olsztyn (Poland) http://www.journals.tmkarpinski.com/index.php/ejbr/article/view/217 <p>Due to restricted public access to military training fields such areas are quite interesting places for conducting faunistic research that would be simply impossible in other terrains. The area examined in the present study was the former military training field in Olsztyn, with the adjacent Lasek Pieczewski and the valley of Skanda Lake. The major aim of the study was to evaluate the current state of the environment in the terrain of the former military training field and the adjacent areas. In this study mites from the suborder Uropodina and cohort Labidostommatina (Acari: Mesostigmata et Prostigmata) were used as a bioindicators. These mites are useful for this purpose because of their specific habitat preferences. The community of mites in the area under scrutiny contained 23 taxa, comparing to 34 species found in whole voivoideship, which is 68% of local species biodiversity. <em>Oodinychus ovalis</em> turned out to be the most numerous species (the specimens of this species constituted almost 38% of the whole community and the frequency per sample was 55%). The other quite numerous species found in the examined area were <em>Janetiella pulchella</em> and <em>Oodinychus karawaiewi</em>, which constituted over 30% of the whole community. Taking into account the number of species and their habitat preferences two most valuable areas were found: southern part of Lasek Pieczewski and Skanda Lake valley.</p> <p><strong>DOI: <a href="http://dx.doi.org/10.5281/zenodo.3534449">http://dx.doi.org/10.5281/zenodo.3534449</a></strong></p> Milena Zduniak, Jerzy Błoszyk, Maciej Nowak, Agnieszka Napierała ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc/4.0 http://www.journals.tmkarpinski.com/index.php/ejbr/article/view/217 Sun, 10 Nov 2019 22:56:44 +0100 Lac, Kerria lacca rearing on Flemingia macrophylla with NPK fertilizer: impact on plant growth, lac yield, and lac parasitisation http://www.journals.tmkarpinski.com/index.php/ejbr/article/view/240 <p>Lac insect, <em>Kerria lacca</em> Kerr. is the only commercial lac producing insect in the world. This tiny insect reared commercially on many specific host plants. Lac product is a natural resin of outstanding properties which is utilized in many products worldwide. Lac insects get settled on the host tree and take their nutrition continuously from the same part. Hence, additional fertilizer application becomes most important component for sustainable host plant growth and lac cultivation. Therefore, to determine the effect of chemical fertilizers (NPK) on <em>Flemingia macrophylla</em> and lac productivity, present study has been conducted. The result revealed that chemical fertilizer combination N<sub>15</sub>:P<sub>5</sub>:K<sub>5</sub> was found to be the best for <em>Flemingia macrophylla </em>growth which gives best lac yield and least pest infestation on <em>Kerria lacca</em>. The correlation study has also proved that NPK has positively influences on plant growth and lac productivity.</p> <p><strong>DOI: <a href="http://dx.doi.org/10.5281/zenodo.3551585">http://dx.doi.org/10.5281/zenodo.3551585</a></strong></p> Arvind Kumar, Manju Rani ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc/4.0 http://www.journals.tmkarpinski.com/index.php/ejbr/article/view/240 Mon, 04 Nov 2019 00:00:00 +0100 Treatment of facial aging with calcium hydroxyapatite - filling and lifting concept http://www.journals.tmkarpinski.com/index.php/ejbr/article/view/230 <p>The face is organized in five different layers (skin, muscles, supportive ligaments, fat pads and bones), which are continuous and interconnected with each other from the scalp to the neck. As a result of aging, changes occur in all its tissues and structures, triggering a cascade of effects in the adjacent areas. Actually, the more it is known about the loss of volume, the better it is to establish the target spots for volume replacement, with consequent more natural- and harmonious-looking outcomes. However, the skin is the outer envelope of the face, which, in the natural process of aging, has a lower capacity to completely accommodate any underlying volume loss or displacement. The result is the formation of creases and folds due to skin sagging. To describe the effects of the injection of calcium hydroxyapatite (CaHA) targeting two objectives at the same time: the restoration of volume loss to compensate the changes in the tridimensional structure and the improvement in skin texture caused by the stimulus to collagen synthesis, thus reducing the sagging of soft tissues envelope. Owing to the mechanism of action of CaHA, its application can be done in two differentiated and little invasive ways so that these objectives can be reached simultaneously. This technique can provide safe, natural and long-lasting rejuvenating effects.</p> <p><strong>DOI: <a href="http://dx.doi.org/10.5281/zenodo.3569835">http://dx.doi.org/10.5281/zenodo.3569835</a></strong></p> Marisa Gonzaga da Cunha, Ana Lúcia Gonzaga da Cunha, Meire Gonzaga, Glaucia Luciano da Veiga, Beatriz da Costa Aguiar Alves, Fernando Luiz A. Fonseca, Carlos A. Machado Filho ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc/4.0 http://www.journals.tmkarpinski.com/index.php/ejbr/article/view/230 Tue, 10 Dec 2019 22:26:18 +0100 Ameliorating effect of quercetin against UV radiation-induced damage in Drosophila melanogaster http://www.journals.tmkarpinski.com/index.php/ejbr/article/view/234 <p>Quercetin is a plant flavonoid found in various fruits, leaves such as tea, vegetables and has been extensively studied due to its antioxidative, anticancer, anti-inflammatory and anti-neurodegenarative effects. UV radiation is harmful for human being as it may cause several complications such as skin cancer. Fruit fly (<em>Drosophila </em>sp.) has long been used as an arthropod model for genetics related studies. In the present study, the protective effect of quercetin is evaluated against UV-C radiation induced damage using <em>Drosophila</em> <em>melanogaster</em>. Pre-treatment with quercetin (10 µM) recovered the shortened lifespan caused by UV radiation and has also increased eclosion rate and the dose of quercetin is lower than the previously reported doses of other flavonoids. Flies subjected to moderate dose of UV radiation showed distinct abnormal characters such as incomplete abdominal pigmentation, curly wings or outstretched wings, whereas quercetin pretreatment showed no such abnormal characters or mutant phenotypes.&nbsp; There is a considerable amount of change in the eclosed adult fly size, pupal size and pupal migration distance as well. Gel electrophoresis study of salivary gland DNA of <em>D. melanogaster</em> demonstrates the efficacy of quercetin in conferring protection&nbsp;to DNA against UV radiation-induced damage. Therefore, it can be concluded that quercetin may act as an effective protective agent against UV radiation-induced damage.</p> <p><strong>DOI: <a href="http://dx.doi.org/10.5281/zenodo.3588543">http://dx.doi.org/10.5281/zenodo.3588543</a></strong></p> Susmita Majumder, Mohna Bandyopadhyay, Sandip Pal, Dalia Mukhopadhyay ##submission.copyrightStatement## http://creativecommons.org/licenses/by-nc/4.0 http://www.journals.tmkarpinski.com/index.php/ejbr/article/view/234 Fri, 20 Dec 2019 22:11:45 +0100