JOURNAL OF ADVANCES IN BIOLOGY http://cirworld.com/index.php/jab JAB is scientific, open access, scholarly, peer-reviewed, fully referred international journal with DOI, ISSN, ICV and IF. en-US <p><a title="Copyright Notice" href="https://cirworld.com/cir/copyright-notice/" target="_blank">Copyright Notice</a></p> editor@cirworld.com (Chief Editor) editor@cirworld.com (Editorial Support Team) Thu, 03 Aug 2017 05:52:47 +0000 OJS 3.1.0.1 http://blogs.law.harvard.edu/tech/rss 60 Invasion dynamics of a non-indigenous bivalve clam; Venerupis aurea (Gmelin, 1791), in Lake Qarun, Egypt. http://cirworld.com/index.php/jab/article/view/6248 <p>The invasive clam <em>Venerupis aurea</em> is native to the Mediterranean Sea. The species has now become established in Lake Qarun, Egypt. This is the first record of the establishment of this clam in the Lake. The histograms of the length-frequency distribution indicated multiple consecutive cohorts and the species is able to establish self-sustaining population. Total weight increased relatively slower than shell length in summer. Isometric growth pattern was recorded in other seasons. Negative allometric growth pattern during summer may explain spawning. The female to male ratio is 1: 0.87. Sexual maturity is attained at 11.8 mm shell length in summer and 16.6 mm shell length in winter. Histological studies revealed two different stages in both male and female clams namely, immature and developing. The results from these preliminary studies have indicated that <em>V. aurea </em>is able to reproduce and survive in Lake Qarun and has an important impact in the local community of the Lake.</p> Kandeel Hashem ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 http://cirworld.com/index.php/jab/article/view/6248 Thu, 03 Aug 2017 00:00:00 +0000 ANTIOXIDANT AND ANTIPROLIFERATIVE ACTIVITIES OF DIFFERENT CULTIVARS OF TOMATOES (LYCOPERSICON ESCULENTUM) ON TUMORAL CELL LINES http://cirworld.com/index.php/jab/article/view/6187 <p>To increase the knowledge about the biological properties of tomatoes, the antioxidant and antiproliferative activities of extracts of nine cultivars of Lycopersicon esculentum, as well as their chemical composition, were studied. The highest&nbsp;antioxidant capacity has been revealed in San Marzano Cirio 3 and Pomodoro Giallo cultivars, both in hydrophilic and&nbsp;lipophilic fractions, while San Marzano, Corbarino di Corbara, and Pomodoro Giallo exhibited the best radical scavenger&nbsp;<br> activity in methanolic fraction. As regards the antiproliferative activity, the median inhibition concentrations of the lipophilic&nbsp;extracts ranged from 272.3 (Pomodoro Giallo) to 364.4 (Corbarino di Corbara) mg dried extract L-1 on Hep-G2 and from&nbsp;324.6 (San Marzano Cirio 3) to 455.4 (Nero di Sicilia) on Caco-2. The methanolic extracts were more active on Caco-2&nbsp;than Hep-G2, while the hydrophilic extracts were not active. These biological properties could be ascribed to the identified&nbsp;<br> carotenoids and phenolic acids as well as to a pull of minor compounds exerting their synergistic effect.</p> Giuseppina Tommonaro, Concetta Piscitelli, Margherita Lavorgna, Marina Isidori, Chiara Russo, Rocco De Prisco, Gennaro Roberto Abbamondi, Carmine Iodice ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 http://cirworld.com/index.php/jab/article/view/6187 Mon, 07 Aug 2017 00:00:00 +0000 INTERNAL CHARGE REDISTRIBUTION AND CURRENTS IN CANCEROUS LESIONS http://cirworld.com/index.php/jab/article/view/6328 <p>The tissues in biological objects from the point of view of electromagnetic effects have to be modeled by not only their conductivity. The electric field induced double ionic layer, constructed by electrolytic diffusion, has to be counted. We describe this phenomenon by micro (frequency dispersion phenomena), and by macro (interfacial polarization), as well as more generalized by Nernst-Planck cells. The results are applied to cancerous tissues in the healthy neighborhood. Our objective is to show the space charge distribution and redistribution that generate injury currents and other internal currents in the development of cancer. We show some aspects of the theoretical basis of modulated electro-hyperthermia (mEHT, trade name oncothermia, also used name: nanothermia), which uses an anti-injury current in the micro-range to limit the proliferation process, similar to the macro-range electrochemotherapy (ECT) processes.</p> ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 http://cirworld.com/index.php/jab/article/view/6328 Wed, 20 Sep 2017 00:00:00 +0000 Morphological variations of the shell of the bivalve Lucina pectinata (Gmelin, 1791) http://cirworld.com/index.php/jab/article/view/6355 <p>In Martinique, the species <em>Lucina pectinata </em>(Gmelin, 1791) is called "mud clam, white clam or mangrove clam" by bivalve fishermen depending on the harvesting environment. Indeed, the individuals collected have differences as regards the shape and colour of the shell. The hypothesis is that the shape of the shell of <em>L. pectinata (P. pectinatus) </em>shows significant variations from one population to another. This paper intends to verify this hypothesis by means of a simple morphometric study. The comparison of the shape of the shell of individuals from different populations was done based on samples taken at four different sites. The&nbsp;standard measurements (length (L), width or thickness (E - <em>├ępaisseur</em>) and height (H)) were taken and the morphometric indices (L/H;&nbsp;L/E; E/H) were established. These indices of shape differ significantly among the various populations. This intraspecific polymorphism of the shape of the shell of <em>P. pectinatus</em> could be related to the nature of the sediment (granulometry, density, hardness) and/or the predation. The shells are significantly more elongated in a loose muddy sediment than in a hard muddy sediment or one rich in clay. They are significantly more convex in brackish environments and this is probably due to the presence of more specialised predators or of more muddy sediments.</p> <p><strong>&nbsp;</strong></p> <p>&nbsp;</p> emma MODESTIN ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 http://cirworld.com/index.php/jab/article/view/6355 Wed, 27 Sep 2017 00:00:00 +0000 Contribution to the knowledge of the ecological profile of some Melastomataceae of the Lesser Antilles: the case of Martinique http://cirworld.com/index.php/jab/article/view/6366 <p>Melastomataceae are particularly diverse in the Neotropical realm. The study of the sylvatic formations of the Lesser Antilles made it possible to identify the dominant floristic corteges associated with the different bioclimates. Although there are many indications that Melastomataceae are not among the species structuring the climax formations of the forests of Martinique, their ecological chorology and profile within these formations can be specified. The analysis of the biodemographic data of eco-units of different bioclimates, obtained during floristic inventories, confirms the indications of the floras of the region. It also makes it possible to provide some specifications concerning the ecological profiles of certain Melastomataceae. <em>Conostegia calyptrata</em> and <em>Conostegia icosandra</em> display a temperament of a heliophilous species of the sylvatic gaps. <em>Clidemia umbrosa</em> is a species affinis of smaller gaps or of trails. <em>Miconia trichotoma</em> is a more forestal species.</p> Severine ELYMARIUS, Philippe JOSEPH, St├ęphane SOPHIE, Yannis JEAN-FRANCOIS ##submission.copyrightStatement## http://creativecommons.org/licenses/by/4.0 http://cirworld.com/index.php/jab/article/view/6366 Wed, 04 Oct 2017 00:00:00 +0000