Scientific Journal of Biological Sciences

Scientific Journal of Biological Sciences

Basic info

  • Publisher: Sjournals
  • Country of publisher: iran, islamic republic of
  • Platform/Host/Aggregator: Sjournals
  • Date added to EuroPub: 2017/Feb/20

Subject and more

  • LCC Subject Category: Biological Sciences, Biochemistry, Bioinformatics, Biotechnology, Genetics, Marine Biology, Microbiology, Plant Sciences, Ecology,
  • Publisher's keywords: Biological Sciences, Ecology, Microbiology
  • Language of fulltext: english
  • Full-text formats available: PDF

Publication charges

  • Article Processing Charges (APCs): Yes 100 EUR
  • Submission Charges: No
  • Waiver policy for charges? Yes

Editorial information

Open access & licensing

  • Type of License: Other
  • License terms
  • Open Access Statement: Yes
  • Year open access content began: 2012
  • Does the author retain unrestricted copyright? True
  • Does the author retain publishing rights? True

Best practice polices

  • Permanent article identifier: DOI
  • Content digitally archived in: LOCKSS
  • Deposit policy registered in: None

This journal has '80' articles

y: 2016 n: 5

Authors: Soumaila Sylla*| Centre de Recherches Océanologiques (CRO), B.P.V 18 Abidjan, Côte d’Ivoire., Tizié Thierry Zan-Bi| Centre de Recherches Océanologique...

Reproductive biology of Big-eye grunt, Brachydeuterus auritus resulting from Ivory Coast marine fishery were studied by monthly sampling from August 2013 to July 2014. Samplings were carried out along the Ivorian littoral. A total of 731 fish with a body length of 8.0 to 22.7 cm folk length (LF) and body weight of 9.2 to 204.6 g were used for this study. According this study, the sex ratio was 1:0.82 (male to female). The sex ratio was significantly different from the expected theoretically 1: 1 distribution except June, September and December. Monthly gonadosomatic index and macroscopically determined gonad stages indicated that B. auritus spawned from February to July with a greater activity from February to May. The condition factor indicated that B. auritus were in good condition, females had higher condition factor than the males. Lengths at 50% maturity were similar with 12.93 cm LF for males and 12.71 cm LF for females. The coefficient b (3.02; 3.07 and 3.04 respectively for males, females and both sexes) of the length-weight relationship was reflecting isometry.

Keywords: Haemulidae, Big-eye grunt, Demersal, Reproductive biology, Ivory coast

y: 2016 n: 7

Authors: Soumaïla Sylla*| Centre de Recherches Océanologiques (CRO), B.P.V 18 Abidjan, Côte d’Ivoire., Christian Bernard Tia| Centre de Recherches Océanologiqu...

From January to December 2014, some aspects of Pseudotolithus senegalensis reproductive biology in Ivory coast were investigated and focused on sex ratio, gonadosomatic and liver-somatic index, size at first maturity, stages of gonadal development and fecundity. A total of 696 fish with body length of 12 to 36 cm standard length (SL) and body weight of 25. 2 to 675.1 g were used for this study. The sex ratio of P. senegalensis was 1: 0.5 (male to female). The females were more than the males (x20,05 (1) = 51.36; p< 0,05). Males and females reach first maturity at 19.01 and 22.28 cm SL respectively. The monthly variations of the gonadosomatic index (GSI), hepatosomatic index (HIS) and the condition factor (K) indicated two periods of reproduction. The long period and the short period were respectively from March to June and from September to November. The hepatic reserves seem to be mobilized to ensure the energetic cost of the reproduction. The absolute Fecundity was ranged from 78612 to 140946 eggs and was positively correlated with standard length and weight. Fecundity-length and fecundity-weight relationships showed positive correlations. The fecundity-length and fecundity-weight relationships were determined by regression analysis with the regression equation F= 12.820xSL– 321.70 (r=0.99) for fecundity-length and F= 0.27xTW – 46.66 (r=0.98) for fecundity-weigth relationship.

Keywords: Pseudotolithus senegalensis, Cassava croaker, Reproductive biology, Ivory coast

y: 2016 n: 9

Authors: Yirga Enawgaw*| Department of Biology, College of Natural and Computational Science, Wolkite University, P.O. Box 07, Wolkite, Ethiopia., Ayalew Sisay...

Infection by soil transmitted helminthes has been increasingly recognized as an important public health problem in poor and developing countries. To initiate prevention and control measures for these neglected diseases, adequate information is required among high risk group. The objective of this study was to determine the prevalence and associated risk factors for soil transmitted helminth infections among urban dwellers in Amanuel, east Gojjam, Ethiopia. A cross-sectional study, involving 403 individuals, was carried out in Amanuel between November 2010 and January 2011. A structured questionnaire and observation for demographic and associated risk factors for soil transmitted helminthes (STHs) infections were used for data collection. Stool samples were collected in plastic containers from each participant and transported to Amanuel Health center for parasitological examination. Both direct wet smear and former-ether sedimentation concentration techniques were used to determine the presence of helminthes eggs. The overall prevalence of STH infections was 46.2% (186/403). Hookworm infection was the predominant soil transmitted helminth infections, which was detected in 77(19.1%) followed by A. lumbricoides which was infected 52(13%) of the study subjects. T. trichuria was the least prevalent geo-helminth infection, detected in only 23 (5.7%) of the study subjects. Majorities, 152(37.7%), had single infection. Double infection occurred in 25(6.2%) of the study subjects and only 9(2.2%) had multiple infection. The prevalence of soil transmitted helminthes was generally high in school age children and low in infants. The common predictors of STH infections in the study, among others, were poor personal hygienic conditions, less frequent wearing shoes habit, soil contacting occupation risk, and lack of hand washing habit after using toilet. On the basis of this result, it can be concluded that STH infection is an important problem among the community of Amanuel town. Therefore, it is recommended that education on personal and environmental hygiene should be taken into account to reduce the prevalence of STH infections. Moreover, school age children and other risk groups should receive regular treatment to control the transmissions of STH infections.

Keywords: Amanuel, Helminthes, Infection, Prevalence, Soil

y: 2016 n: 11

Authors: Mehdi Ghorbani*| Department of Agronomy and Plant Breeding, University of Tehran, Iran., Mansoor Omidi| Department of Agronomy and Plant Breeding, Uni...

The roots of Rubia tinctorum L., the common madder contain natural red dye known as alizarin. In the current study, central composite design of response surface methodology was employed for modeling of fungal elicitor treatment on natural alizarin production in uniform hairy root cultures of common madder in liquid 1/2 B5 medium. Upon fungal elicitation assay, using two fungal mycelia elicitors (Aspergillus niger and Bipolaris maydis) at three different times (0, 12 and 24h), the production of alizarin was determined. According to the results, after 24h; modeling and optimization conditions, including combination of 2 % of both elicitors for alizarin production equal to 10.0 mg.g-1 DW was evaluated. Optimal process parameters have been determined by using a high desirability value of 1.00 in Design-Expert® software. Our results, altogether, offer a promising method regarding to the improvement of the alizarin production, as a pivotal natural dye in industrial applications.

Keywords: Agrobacterium rhizogenes, Alizarin, Hairy roots, Madder, Rubia tinctorum L., Fungal elicitor

y: 2017 n: 1

Authors: Alejandro de Jesús Cortés-Sánchez*| Secretaria de Salud, Comisión Federal para la Protección contra Riesgos Sanitarios. Control analítico. Departament...

The enterococci are a bacteria group that can be found in several environments, such as water, plants, animals and gastrointestinal tract in humans and animals. These microorganisms have entered into the spotlight for aspects related to health like: a bigger incidence in hospitable and community diseases, as the main causal agent; a phenomenon of resistance, in isolated food strains and clinical cases, to different antimicrobials, including those used on a regular basis in clinical therapies, and a spreading and transference capacity to other microorganisms. However, this group has also contributed to the well-being of human health, since it has been used around the globe as a biological indicator of water and food quality in order to both protect and look the health out against transmission risks of several pathogen agents; and finally, some species of this genre have been reported as factors involved in the production and preservation of foods, starting in the synthesis of several chemical compounds, favoring the consumer’s health. Due to the aforementioned, this present document is focused on showing a general vision of the genre Enterococcus spp. and its duality in human health; i.e. its harmful side, as a causal agent of diseases; and its beneficial side, in the control and sanitary surveillance in water and foods to protect the human health against biological risks, and its contribution to the development, foods preservation and effects on the consumer’s health.

Keywords: Enterococci, Pathogens, Bacteriocins antimicrobials, Biosurfactants, Peptides, Food safety

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