| Publisher: Rebibio - Rede Brasileira de Informações Biológicas
| ||||
Similar Journals
|
Brazilian Journal of Biological Sciences
Number of Followers: 0  Open Access journalISSN (Print) 2358-2731 Published by Rebibio - Rede Brasileira de Informações Biológicas  [1 journal]
|
- The challenges of an online journal editor
Authors: Ronilson Jose da Paz
Pages: 1 - 2
Abstract: Editorial.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Role of free-living protozoa in the occurrence and survival of Vibrio
cholerae O1 in aquatic ecosystem
Authors: Ferdous Nawar; M. Niamul Naser
Pages: 3 - 12
Abstract: Cholera disease caused by bacteria Vibrio cholerae O1 and O139. Both afflict 3-5 million and cause 100,000-120,000 deaths worldwide each year. Although from the previous study we have information on the association of cholera bacteria with various zooplankton but little is known about what kinds of relationship exists between cholera bacterium with protozoa though they prefer to live more or less at a similar ecological niche. In the present study the role of free-living fresh water protozoa's in the persistence of V. cholerae O1 was assessed. The in situ association of V. cholerae O1 with protozoa showed the association of V. cholerae O1 with the fresh water shelled amoeba, Arcella but in the case of ciliates and flagellates large numbers of bacteria were detected from food vacuoles. The result also showed that vibrios form biofilms in Arcella culturing media and survived up to two months but the bacterial density declined to < 10 cells/mL water within six days in ciliate and flagellate culturing media. Besides in M-PCR results wbe, ctxA, rstR2 genes were positive for Arcella culturing microcosm later for up to 55 days but after four days all of the genes were negative for flagellate and ciliate culturing microcosm water. It indicates that tested amoeba, Arcella spp help in the survival of V. cholerae O1 in nature but ciliates and flagellates can graze upon large number of planktonic vibrios and control the abundance of cholera bacteria.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Epidemiology of hepatitis B virus surface and core antigens among pregnant
women visiting Ring Road Hospital for antenatal care in Ibadan South-West,
Local Government Area, Oyo State, Nigeria
Authors: F. A. Kuta; O. E. Babatunde
Pages: 13 - 16
Abstract: This study was carried out to determine the prevalence of hepatitis B virus surface and core antigens among pregnant women visiting Ring Road Hospital for antenatal care in Ibadan, South-West, Local Government Area. Out of 150 blood samples collected and screened, using Diaspot(R) test strips, ten were found positive (6.6%). Pregnant women within 25-29 years had the highest prevalence of (2.7%) the lowest prevalence of 0.6% was found among pregnant women within the age group of 35-39 years. Pregnant women that are from polygamous family had (4.0%) while those from monogamous recorded 2.7%. Similarly, pregnant women with history of blood transfusion had 5.3% while those without history of blood transfusion recorded 1.3%. Chi-square analysis revealed that age, history of blood transfusion and family type are not related to infection with hepatitis B virus in the studied area. More awareness campaign should be organized in order to educate populacion on the possible route of transmission of the disease. This will help bring down the burden of the disease in the studied area and by extensions in Nigeria.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Seroprevalence of hepatitis A among individuals with chronic hepatitis B
infection in Isfahan Province, Iran
Authors: Parisa Shoaei; Somayeh Najafi, Laleh Zeid Abadi Nejad, Behrooz Ataei, Majid Yaran, Zary Nokhodian, Bahareh Vakili
Pages: 17 - 21
Abstract: Hepatitis A virus (HAV) is an important widespread virus and available evidences have shown that HAV superinfection with Chronic liver disease leads to more severe complications. The aim of the present study was to assess the seroepidemiology of HAV infection in patients with chronic hepatitis B in Isfahan Province, Iran in order to evaluate the necessity of vaccination for these patients. A descriptive cross-sectional study was conducted from spring 2010 to spring 2011. The target population of this study was 51 patients with chronic hepatitis B infection who had referred to diseases Infectious and Tropical Medicine Research Center of Isfahan, Iran. Subject's characteristics were collected by questionnaire. IgG anti-HAV antibody was evaluated by Enzyme-Linked Immunosorbent Assay (ELISA) and statistical analysis was done by SPSS software using descriptive statistics. The mean age of the subjects was 38 +/- 14.2 years. Most of the cases were male (78.1%), 42% of CHB patients were below or equal to 30 years. The anti-HAV seropositivity was (100%) so all of the patients had a previous history of infection with HAV. According to the high HAV immunity in our study (100%), vaccination was not required in these patients. However vaccination against HAV in chronic HBV patients with anti-HAV seronegatiy may prevent super infection and development of fulminant or severe hepatitis in these patients.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- The relationship between indices of hepatocellular injury and
anthropometric measurements in some Babcock University Students, Ilisan,
Ogun State, Nigeria
Authors: Jamiu A. Akamo; Regina N. Ugbaja, Gogonte H. Amah, Ifeoluwa Fabuluje, Joy O. Edaferiemu, Nankang G. Lepzem, Kehinde O. Oyekale
Pages: 23 - 37
Abstract: The anthropometric measurements of some apparent healthy Babcock University students (53 male and 47 female) were investigated in this study with a view to estimating the various anthropometric parameters, blood pressure components and hepatocellular injury indices (Aspartate aminotransferase - AST, Alanine aminotransferase - ALT, and Alkaline phosphatase - ALP) in different blood groups. Blood pressure, fasting plasma glucose (FPG), AST, ALT, ALP, weight, height, unblical circumference (UC), waist circumference (WC), hip circumference (HC), were determined using standard procedures; body mass index (BMI), body fat percentage (BF%), waist-to-hip ratio (WHR), waist-to-height ratio (WHtR) and other body composition [body surface area (BSA), fat free body mass (FFBM), fat mass, total body water (TBW), intracellular fluid (ICF), extracellular fluid (ECF)] were calculated to assess overweight and obesity. While no significant difference (p> 0.05) was observed in the age, diastolic blood pressure (DBP), heart rate, FPG, weight, BMI, BSA, UC, WC, HC and WHR values of male when compared with the female counterpart; a significant (p < 0.05) decrease was observed in BF%, fat mass and WHtR, however a significant (p < 0.05) increase was found in systolic blood pressure (SBP), pulse pressure (PP), mean arterial pressure, height, FFBM, TBW, ICF and ECF of male when compared with the female subjects. No significant difference (p> 0.05) was observed in the activities of AST, ALT and ALP of male when compared with the female counterpart. Also there was no significant difference in AST, ALT when stratified according to various ABO blood groups of both male and female subjects. A significant positive relationship was observed between the ALP and FFBM (r = 0.369, p < 0.01); and BSA (r = 0.284, p < 0.01) male. Also AST significantly correlated positively with WC (r = 0.448, p < 0.01), HC (0.292, p < 0.05), UC (r = 0.402, p < 0.05), WHR (r = 0.410, p < 0.01) and WHtR (r = 0.429, p < 0.01) in the female subjects. ALP was directly correlated significantly with fat mass (r = 0.289, p < 0.05) in the female subjects. Thus these findings in young adults suggest potential clinical utility of including WC, HC, UC, WHR, WHtR as biomarkers in liver dysfunction and cardiovascular diseases assessment formulations.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Pharmacological effect of one icv dose of allopregnanolone in the female
rat: behavioral profile
Authors: Laura Tatiana Pelegrina; Carla Escudero, Fernando Alfredo Giuliani, Sebastian Marcelo Manuel Garcia, Ricardo Jorge Cabrera, Myriam Raquel Laconi
Pages: 39 - 50
Abstract: We have previously observed that intracerebroventricular allopregnanolone (ALLO) injection produced an anxiolytic effect and inhibited sexual receptivity when the test was performed in a separate manner. Also, ALLO reverts learning deficit in female rats in the hippocampi. To study the behavioral effects of an acute treatment with ALLO in the right lateral ventricle we used two approaches: a- A battery test to analyze the anxiety and mating behavior. And b- The avoidance test and novel object recognition test to evaluate its effect on memory and learning. Ovariectomized rats were injected with estrogen and progesterone. After it ALLO or vehicle were administered into the right lateral ventricle. To reach the objective (a) rats were put in a sequential battery test in the next order: 1-Open field. 2- Plus maze task. 3- Mating behavior. For the aim (b) it was performed a Novel Object Recognition Test and Step-down Inhibitory Avoidance Task. ALLO did not affect locomotors-exploratory behavior. Animals treated with ALLO, spent more time and had more entries into the open arm in a plus maze task and lordosis quotient was lower than in the control group. ALLO increased the latency in step down test and had no effects on discrimination index test in NORT. Here we demonstrated that one pharmacological dose of ALLO in ovariectomized primed rats is enough to generate all changes observed in the battery test. Moreover, the acute treatment with ALLO in lateral ventricle enhanced the memory acquisition in an avoidance task.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Knowledge and use of medicinal plants in the Semiarid Region of Brazil
Authors: Priscilla Clementino Coutinho; Zenneyde Alves Soares, Ezequiel da Costa Ferreira, Diego Souza, Rodrigo Silva de Oliveira, Reinaldo Farias Paiva Lucena
Pages: 51 - 74
Abstract: This study aimed to record the knowledge and use of medicinal species in the Semiarid Region of Paraiba, Northeast Brazil. Interviews were conducted with 100% of homeowners (men and women). We calculated the Relative Importance Index (RI) to determine local most important species. We recorded 45 species, 41 genera and 20 families. The most representative families were Fabaceae (12 spp.), Euphorbiaceae (5 spp.) and Anacardiaceae (4 ssp.). Myracrodruon urundeuva Allemão and Syderoxylum obtusifolium (Roem & Schult.) T. D. Penn. were the most prominent species. There were 17 medicinal plants that showed great versatility in their use of RI> 1. There was predominance for treatment of respiratory system disorders, undefined diseases or undefined pain, digestive and genitourinary system disorders, and general inflammation and cicatrizing the two most cited diseases. The bark was the most used part with 1,399 use citations, and sauce was the main method of preparation (586 citations). This study demonstrated a greater use of two endangered species in the Caatinga, revealing conservation concerns.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Antibacterial activity of the stem bark of Jatropha curcas L. against four
bacteria species
Authors: F. A. Kuta; A. N. Saidu, H. H. Aluwo
Pages: 75 - 78
Abstract: The antibacterial activity of the aqueous and methanolic crude stem back extracts of Jatropha curcas L. against four bacteria species (Pseudomonas aeruginosa, Staphyloccus aureus, Salmonella typhi and Escherichia coli) was investigated, using agar diffusion technique. At concentrations ranging from 10 - 40 mg/mL, the methanolic crude extract showed activity against the four bacteria (P. aeruginosa, Staphylococcus aureus, Salmonella typhi and E. coli) from 2 mm - 20 mm, after 24 h incubation. The aqueous crude extract showed no activity against all the bacteria species investigated. Minimal inhibitory concentration of the crude extract was found to be between 10 - 20 mg/mL. Similarly, the minimal bacteriocidal concentration was between 20 - 25 mg/mL. The phytochemical constituents of the crude extracts include alkaloid, cardiac glycosides, carbohydrates, terpenes, flavonoids, steroids and anthraquinone. More extraction solvents should be employed to ascertain the antibacterial potentials and the phytochemical constituents of the plant.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Correlation studies in seed traits, moisture and oil content and effect of
hormones on flowering of Jatropha curcas L.
Authors: Rumi Kotoky; Anulekha Rabha, Animesh Gogoi, Subhan Chandra Nath, Siddhartha Proteem Saikia
Pages: 79 - 84
Abstract: Jatropha curcas L. is an oil-bearing species with multiple uses and considerable potential as a bioenergy crop. The present investigation has been undertaken to assess the variability in seed traits, moisture percentage and oil content of 25 accessions of J. curcas collected from different agroclimatic zones of North-East India. There were significant differences (P < 0.05) in seed size, 100 seed weight and oil content among the accessions. The maximum seed weight was recorded in J22 collected from Baramura, Tripura and the minimum in J13 collected from Roing, Arunachal Pradesh. Oil variability ranged from 25% (J20, collected from Mokochung, Nagaland) to 36% (J18, collected from Mamit, Mizoram). The moisture percentage in the sun dried seeds varied from 6.06% (J5, collected from Lambding, Assam) to 11.32% (J6, collected from Lakhimpur, Assam). When the oil percentage of seeds is correlated with the sun dried seed moisture percentage and 100 seed weight, it has been found that the oil yield is negatively correlated with the seed moisture. On the other hand the seed weight has strong positive correlation with the oil yield. The effect of hormones on growth and yield potentiality of J. curcas was also studied. The hormonal solutions of indole-3-acetic acid (IAA), indole-3-butyric acid (IBA) and 1-naphthalene acetic acid (NAA) in 150, 200, 250 and 500 ppm concentrations were used for the treatments while water was used as control. Data on flowering was recorded before and after treatment of hormones. The male: female ratio was very less (minimum 2:0 in case of J9, and maximum 15:2 in case of J11) in each branch but after hormonal treatment, the number of female flowers were found more in all the accessions. IBA showed the maximum number of female flowers followed by IAA and NAA. Maximum number of female flowers was recorded in each branch of J2 followed by J1 when treated with 250 ppm of IBA.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Assessment of allelopathic efficacy of Parthenium hysterophorus L. plant
parts on seed germination and seedling growth of Phaseolus vulgaris L.
Authors: Tahseen; N. K. Hemanth Kumar, Shobha Jagannath
Pages: 85 - 90
Abstract: In the current study an endeavor was been made to appraise the allelopathic effects of Parthenium hysterophorus L. leaf, stem and flower extracts on growth and seedling related traits of Phaseolus vulgaris L. The Parthenium hysterophorus leaf, stem and flower extracts showed inhibitory activity on germination, shoot length, root length, seed vigour, tolerance index, root length, shoot length, fresh and dry weight of bean seedlings. All the parameters were found to be decreased with increase in the concentration of aqueous leaf, stem and flower extracts except phytotoxicity, when compared to control. The maximum and minimum value was observed for all these parameters in 2% and 10% concentration, except phytoxicity respectively, when compared to control. The result of the present study showed that inhibitory effects of Parthenium hysterophorus leaf, stem and flower extracts that may be due to the presence of some allelochemicals.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Comparative studies on phytochemical and proximate composition of four
morphologically distinct segments of the conophor seedling (Tetracarpidium
conophorum Hutch. & Dalziel)
Authors: K. O. Oyekale; O. I. Odutayo, E. B. Esan, K. O. Ogunwemimo, O. A. Denton, D. T. Bolaji
Pages: 91 - 100
Abstract: This work attempts to determine the bioactive agents' groups probably responsible for the diverse growth characteristics and medicinal uses of Tetracarpidium conophorum Hutch. & Dalziel and to explore the global propagation of the climber plant. Consequently, four segments of the seedling namely: the dried epicotyls and foliage, the upper regenerative hypocotyl, the poorly regenerative swollen hypocotyl and the roots of the conophor seedlings were screened for ten bioactive compounds as well as their food values. Results showed that alkaloids and saponin concentrations were highest in the foliage. Terpene concentration was highest in the regenerative hypocotyl segment. Tannins, phenolic compounds and phlobatannin concentration were highest in the non-regenerative hypocotyl segment. Anthraquinone, cardiac glycoside and flavonoids concentrations were highest in the roots. Cardenolide concentration is generally low in all the segments of the conophor seedling studied. It can be inferred that the foliage can be used as an anti-venom agent based on its relatively high content of cardiac glycosides, alkaloids, saponins and phenols which are active substances responsible for detoxification of venoms in human system. There were also obvious variations in the amount of both bioactive agents and food content of the various segments of the conophor seedling. High proteins and terpene content of the regenerative hypocotyl segment are probably responsible for adventitious bud regeneration since terpenes are precursors of plant hormones.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Economic importance and seasonal population trends of grey date scale
Parlatoria blanchardi (Targioni Tozzetti, 1892) (Homoptera: Diaspididae)
in Jordan Valley
Authors: Tawfiq M. Al Antary; Mashhour M. Al-Khawaldeh, Mazen A. Ateyyat
Pages: 101 - 109
Abstract: Field visits were carried out in two date palm farms in the Jordan valley from April, 1999 to December, 2000. Additionally, random observations were done from 2001 to 2014 to assess economic and pest status, as well as changes in the population of the grey date scale Parlatoria blanchardi (Targioni Tozetti, 1892) (Homoptera: Diaspididae). Diagnostic characters for the grey date scale were provided. Pest status for this scale was mentioned with injury description. The grey date scale was found to be from five main insect pests attacking the date palm tree. Population trend studies on the grey date scale in Ghor Kabid and Baquarah farm in Jordan valley between April, 1999 and December, 2000 were reported. The study showed that there were five close overlapped generations per year in the first farm and four overlapped generations in the 2nd farm. The highest peak of alive crawlers (first nymphal instar) was in mid May, 1999 and in late April, 2000 in the first farm. For alive 2nd nymphal stage and females, the highest peaks occurred in late June, 1999 and in late April and late June, 2000. In Baquarah (the 2nd farm), the highest peak of alive crawlers occurred in mid May, 1999 and in late April, 2000. For alive 2nd nymphal stage and females, the highest peak occurred in early June, 1999 and in late May, 2000.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Importance and seasonal population dynamics of great date moth Arenipses
sabella Hampson (1901) (Lepidoptera: Pyralidae) in Jordan Valley
Authors: Tawfiq M. Al Antary; Mashhour M. Al-Khawaldeh, Mazen A. Ateyyat
Pages: 111 - 119
Abstract: Field trips were conducted at two date palm farms in Jordan Valley from April, 1999 to December, 2000. In addition, random observations for field pest status from 2001 to 2014 were carried out, in order to show economic and pest status, and the population trends of the great date moth. Diagnostic characters for the great date moth were provided. Pest status for the great date moth was mentioned with injury descriptions. The great date moth was found to be from the five main insect pests attacking the date palm fruits. Population trends studies on the great date moth in Ghor Kabid and Baquarah Farms, in Jordan Valley, from April, 1999 and August, 2000, were reported. The study showed that there were two generations per year for the great date moth in each of the two farms. The highest peaks of alive larvae showed up for the first generation, which were during April, 1999 and April-May, 2000 in Ghor Kabid Farm and were at late May-early June, 1999 and in 2000 in Baquareh Farm. The highest adult peak occurred in mid-March, 1999 and 2000 in both date farms.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Economic importance of date palm Phoenix dactylifera L. (Liliopsida:
Arecales: Arecaceae) pests in Jordan Valley
Authors: Tawfiq M. Al Antary; Mashhour M. Al-Khawaldeh, Mazen A. Ateyyat
Pages: 121 - 134
Abstract: Field trips were conducted in two date palm farms in Jordan Valley from April, 1999 to December, 2000 and random samples and observations for field status for date palm pests in different regions in Jordan from 2001 to 2014 to show the economic importance for fourteen insect pests. These pests namely are green scale Asterolecanium phoenicis Ramachanda Rao, gray date scale Parlatoria blanchardi (Targioni Tozzetti), red scale Phoenicococcus marlatti Cockerell, Old World date bug Ommatissus binotatus lybicus de Bergevin, date thrips Adiheteothrips jambudvipae Ramok, great date moth Arenipses sabella (Hampson), lesser date moth Batrachedra amydraula Meyrick, ephestia moth Ephestia spp, red palm weevil Rhynchophorus ferrugineus Olivier, dried fruits beetle Carpophilus hemipterus (L.), pineapple beetle Urophorus humeralis Fabricius, rhinoceros borer beetle Oryctes rhinoceros (L.), Oriental wasp Vespa orientalis Fabricius and vinegar fly Drosophila melanogaster (Meigen).
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Removal of cyanobacterial toxins from drinking water sources by aluminium
sulphate treatment
Authors: Moghira Badar, Safder Shah Khan, Mahmood-ur-Rahman, Irshad Khokhar, Yasir Ch; Fatima Batool
Pages: 135 - 145
Abstract: Cyanobacterial toxins are very harmful and known as hepatic toxins and a major cause of liver damage. They can easily grow in water sources under specific conditions of temperature and small nutrition. In this study, the cyanobacterial toxins were identified from different samples of drinking water sources and blood of that water consumers like animals (cattle and buffaloes) and liver infected people. The values of cyanobacteria toxins (microcystins) were very much correlated in each type of samples in the designed study but high values of toxins were seen in canal water samples. It is dangerous for both human and animals as shown in results because of high values of microcystin were present in cattle and buffaloes blood samples. Aluminium sulphate was used to treat contaminated water which is an inorganic molecule and its reaction is very fast with dissolved particles in water samples. The effectiveness of aluminium sulphate as coagulant in the coagulation/flocculation process for removing the Cyanobacteria toxins from 1-0.1 mg/L on average from all different types of water sample sources (ground water, canal water and water storage tanks in houses). It was found as very useful to clean the drinking water by using its different concentration like 5, 10, 15, 20 and 25 mg/L. This study reveals a drastic picture of drinking water conditions in Pakistan however, the contaminated water can be treated effectively by using aluminium sulphate.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Litter-fall production in cool-temperate forests of the Nanda Devi
Biosphere Reserve, Uttarakhand Himalaya, India
Authors: Shankar Datt Tiwari; Ritesh Joshi
Pages: 147 - 154
Abstract: Nanda Devi Biosphere Reserve has rich biodiversity and other distinguished features from the environmental point of view. Nanda Devi Biosphere Reserve is reputedly one of the most spectacular wilderness areas having qualitatively and quantitatively unique biota, forest type, cultural heritage, religious faiths, climate and soil type in the world. Though, the study area is completely protected but the dependency of local inhabitants on identified forests is a common practice for a varierty of resource collection. Local people were observed collecting a large amount of forest resources for their livelihoods. This article deals with annual litterfall production pattern in six representative forests (Abies pindrow (Royle ex D. Don) Royle, Betula utilis D. Don, Cedrus deodara (Roxb.) G. Don, Mixed Forest,
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Study on mangrove associated estuarine waters of Northeastern Bay of
Bengal reveals potential diatom indicators of dissolved inorganic
compounds
Authors: Abhishek Mukherjee; Subhajit Das, Sabyasachi Chakraborty, Tarun Kumar De
Pages: 155 - 168
Abstract: An extensive study (2011 and 2012) was performed to narrow down certain diatom species with bioindicator potentials of highly dynamic and well mixed tropical estuary. The Hooghly Estuary in the Northeastern coast of Bay of Bengal was chosen as the study sites. The comparison between mangrove impoverished and mangrove dominated estuarine rivers revealed intriguing variation in the phytoplankton species composition in response to the dissolved nitrate, phosphate and silicate concentrations, thus forming the kernel of the study by focusing on certain species with greater abundances pointing to their better adaptability and responsiveness to biotic/abiotic parameters in a well mixed estuary. Coscinodiscus hyalinus, Coscinodiscus radiatus, Lioloma elongata, Skeletonema costatum, Synedra crystallinum, Thalassionema frauenfeldtii and Thalassionema nitzschioides have expressed better as bioindicators.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- First record of the snail-eating snake Sibynomorphus mikanii (Schlegel,
1837) (Serpentes: Dipsadiidae) from Santa Catarina State, Central Southern
Brazil
Authors: A. Ignacio Agudo-Padron; Jefferson Souza da Luz
Pages: 169 - 171
Abstract: The first geographic record of the snail-eating snake Sibynomorphus mikanii (Schlegel, 1837) (Serpentes: Dipsadiidae) in the Bosque Vereador Pedro Medeiros, a preserved urban forest park of the Florianopolis Continental Territory, Santa Catarina State, Central Southern Brazil, is confirmed, expanding the known geographical distribution of this species in the Brazilian Southern Region.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- Balance of the Brazilian molluscs officially recognized as threatened of
extinction, with special emphasis in species occurring in the Southern
Region
Authors: A. Ignacio Agudo-Padron; Jefferson Souza da Luz
Pages: 173 - 175
Abstract: A critical review and evaluation of content of the recent Official List of Brazilian Mollusc Species Threatened with Extinction in force is presented, based on analysis of the information corresponding to eight of the 23 non-marine/continental and specific marine species included in it, who occurring in the Southern Region of the country within the geographical space of the States of Santa Catarina and Rio Grande do Sul.
Citation: Brazilian Journal of Biological Sciences
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
Issue No: Vol. 2, No. 3 (2015)
- V. 2, No. 3
PubDate: Tue, 30 Jun 2015 00:00:01 GMT
- Editorial note
Authors: Ronilson Jose da Paz
Abstract: Editorial.
Citation: Brazilian Journal of Biological Sciences
PubDate: Wed, 31 Dec 2014 00:00:01 GMT
Issue No: Vol. 1, No. 2 (2014)
- Thirteen new records to inventory of marine mollusc species from Santa
Catarina State, Central Southern Brazil
Authors: A. Ignacio Agudo-Padron
Pages: 35 - 37
Abstract: Based in reliable bibliographical technical reports of recent production, a new total of thirteen marine mollusc forms (eleventh gastropods - sea slugs, and two bivalves) are added and incorporated to the previous systematic malacological inventory of Santa Catarina's State-SC, Central Southern Brazil Region, the species Pleurobranchus testudinarius Cantraine, 1835, Cuthona cf. iris Edmunds & Just, 1983, Flabellina cf. marcusorum Gosliner & Kuzirian, 1990, Dondice occidentalis Engel, 1925, Phidiana lynceus Bergh, 1867, Tyrinna (= Okenia) evelinae (Marcus, 1958), Felimida (= Hypselodoris) marci (Marcus,1971), Tambja sp, Roboastra sp, Glaucus atlanticus Foster, 1777, Bursatella leachi Blainville, 1817, Eurytellina angrensis Marques & Simone, 2014, and Crassostrea mangle Amaral & Simone, 2014, included in thirteen genera and eleventh families, raise the state record for 667 species and subspecies regionally known (11 Polyplacophora, 408 Gastropoda, 10 Scaphopoda, 228 Bivalvia, and 10 Cephalopoda).
Citation: Brazilian Journal of Biological Sciences
PubDate: Wed, 31 Dec 2014 00:00:01 GMT
Issue No: Vol. 1, No. 2 (2014)
- Ethnoichthyology of fishermen community from the Praia da Penha, in Joao
Pessoa City, Paraiba, Brazil
Authors: Dyego Medeiros de Almeida; Erica Caldas Silva-Oliveira, Romulo Romeu Nobrega Alves
Pages: 39 - 49
Abstract: The interaction of human populations with natural resources mainly related to the perception of the knowledge and the various uses of these resources are the basis for ethnoecological knowledge. The addresses of this research are based on folk knowledge of artisanal fishers of the community of Praia da Penha, in João Pessoa City, Paraíba, Brazil, in order to analyze, through an exploratory case study, the knowledge of ichthyological community is investigated by performing a detailed description quali-quantitatively. Artisanal male fishers, older than 18 years old were interviewed. The results showed that 95% of the fishermen produce artisanal fishing activities in the community, the average of their age are around 48.2 years old and they represent the economic mainstay in their families and strong family ties reinforce the core traditions of local fishing. The main methods of capturing cited by respondents were handline fishing and the sunk fixed gillnets. Of 192 folk species mentioned, 19 are considered relevant to the community, especially yellowtail snapper (Lutjanus analis), largetooth sawfish (Scomberomorus brasilliensis), king mackerel (Scomberomorus cavalla), common dolphin (Coryphaena hippurus), redfish (Lutjanus purpureus), tuna (Thunnus spp.), smalltooth weakfish (Cynoscion leiarchus), commom halfbeak (Hyporhamphus unifasciatus), Atlantic thread herring (Opisthonema oglinum), triggerfish (Balistes capriscus) and garfish (Strongylura marina). This research reveals that the community of artisanal fishers from Praia da Penha has an extensive ichthyological knowledge, not yet explored in its full possibilities.
Citation: Brazilian Journal of Biological Sciences
PubDate: Wed, 31 Dec 2014 00:00:01 GMT
Issue No: Vol. 1, No. 2 (2014)
- Ecological succession of zooplankton species in a temporary river in a
semi arid region of Brazil
Authors: Maria Cristina Crispim; Ronilson Jose da Paz, Takako Watanabe
Pages: 51 - 58
Abstract: In the semi arid region of Brazil, the rivers and reservoirs are temporary, existing at times, even years, without water. The animal communities have to develop special strategies to survive when the environment is dry and to multiply, when water arrives. This study analyzed the zooplankton community upon the beginning of the rainy season in a temporary river (in remaining ponds) in Northeast Brazil. Ecological succession of species was analyzed throughout 9 months during which there was water in the river. During this period, samples were collected on days 15, 28, 37 and 43 after the start of raining and monthly afterwards. From diapause 28 rotifer species and 5 subspecies; 8 cladoceran species and 8 copepod species ecloded. The first cladoceran to appear was Moina minuta, which reached high densities, 1,234 ind.L-1, followed by Ceriodaphnia comuta, observed on day 28, and by Diaphanosoma spimilosum observed 37 days after the rain event. The first copepods to appear were Mesocyclops meridianus and Muscocyclops sp., both in the first sample (day 15). Of all the species, 21 were observed only once. Among the rotifers 10 species were observed in the first sample. This group was present in high densities e.g. Conochilus sp., with 20,403 ind.L-1, Keratella tropica with 9,392 ind.L-1 and K. lenzi with 1,149 ind.-1. Species densities were correlated with chlorophyll a, nitrate and ammonium. New ephippia production was related with total zooplankton densities, chlorophyll-a, nitrate and ammonium.
Citation: Brazilian Journal of Biological Sciences
PubDate: Wed, 31 Dec 2014 00:00:01 GMT
Issue No: Vol. 1, No. 2 (2014)
- Photochemical quantum efficiency of Aspidosperma pyrifolium (Mart) and
Poincianella pyramidalis (Tul.) L. P. Queiroz in an area of semiarid
tropics (Soledade City, Paraiba, Northeast Brazil)
Authors: Everaldo Oliveira Costa Junior; Erica Caldas Silva-Oliveira, Juliana Christina Machado de Moura, Thonny Hill Lima Melo
Pages: 59 - 65
Abstract: An analysis of biomonitoring quantum efficiency Aspidosperma pyrifolium (Mart.) and Poincianella pyramidalis (Tul.) L. P. Queiroz, was measured between 2012 and 2013 in order to understand possible strategies of survival for species under extreme drought conditions in Soledade City, semiarid region of Paraiba. Three leafs of the middle portion of randomly arranged in three individuals and populations exposed to intense light, a total of nine replicates per population were chosen. The values of quantum efficiency in P. pyramidalis recorded an increase in July (0.652), August (0.785) and September (0.667) of 2012, in response to increased local precipitation occurred in June of 2012. Similar response was observed in the A. pyrifolium which showed mean values of 0.745 in August and 0.685 in September of the same year. P. pyramidalis showed greater resistance to water stress, with values of quantum efficiency (0.712), in December of 2012, compared to A. pyrifolium (0.353). The plant species exhibit a seasonal response to water deficit experienced to the study period.
Citation: Brazilian Journal of Biological Sciences
PubDate: Wed, 31 Dec 2014 00:00:01 GMT
Issue No: Vol. 1, No. 2 (2014)
- Editorial note
Authors: Ronilson Jose da Paz
Abstract: Editorial.
Citation: Brazilian Journal of Biological Sciences
PubDate: Mon, 30 Jun 2014 00:00:01 GMT
Issue No: Vol. 1, No. 1 (2014)
- Bioinvasion of Tradescantia zebrina Heynh. (Commelinaceae) in uplands,
State of Paraiba, Brazil
Authors: Danielle Brigida Candeia Ribeiro; Juliano Ricardo Fabricante, Manoel Bandeira de Albuquerque
Pages: 1 - 10
Abstract: The study of invader species and their consequences to the environment represents an important reinforcement to the knowledge of environmental preservation. This work aimed to evaluate the invasive aspects of Tradescantia zebrina Heynh., subsidizing information to their adequate management or control. The study area is compound by a Open Ombrophylous Forest in the Municipality of Areia, Paraiba State, Brazil. The evaluated variables were populational density, biomass, biometry, invasion velocity and impacts of species under resilience of native vegetation. The results found density of 627 +/- 16 individuals/m2, (mean +/- standard deviation), 25.9 +/- 68 cm length and 0.21 +/- 0.03 cm de diameter with positive relationship between both variables (r = 0.24; t = 2.4; p = 0.02) and biomass of 16.9 g (leaves), 10.6 g (stems) and 1.3 g (roots) for each 100 sampled individuals, being that in each m2, reached to have 18.8 +/- 5,1 g leaf biomass, 22.4 +/- 7.6 g stem biomass and 3.4 +/- 1.3 g root biomass. The population showed a rapid expansion occupying 0.30 +/- 0.09 m2 after seven days and 0.51 +/- 0.15 m2 in eighty four days. Parcels without the invader species (SE) showed expansive accumulation of individuals throughout the evaluation time, while in the parcels with the species (CE) the number of individuals exhibit few changes (p = 0.021 and H = 5.327). The results exhibit the biological invasion in the UFPB Campus II by T. zebrina, represents a threat to the local biodiversity due to its aggressive invasive behavior.
Citation: Brazilian Journal of Biological Sciences
PubDate: Mon, 30 Jun 2014 00:00:01 GMT
Issue No: Vol. 1, No. 1 (2014)
- Exotic molluscs in State of Paraiba, Northeast Brazil: a bibliographic
survey
Authors: Ronilson Jose da Paz; Luciano de Brito Junior, Marilia Carolina Pereira da Paz
Pages: 11 - 14
Abstract: We present a list of exotic mollusc species recorded in the literature from State of Paraiba (PB), Northeast Brazil, as of April 2014. The total number of species of exotic mollusc recorded is seven, two Bivalvia and five Gastropoda. The Class Bivalvia's species was represented by Isognomon bicolor (Adams, 1845) and Corbicula fluminea (Müller, 1774), and Class Gastropoda's species by Achatina fulica (Bowdich, 1822), Melanoides tuberculata (Müller, 1774), Physella acuta (Draparnaud, 1805), Aplexa marmorata (Guilding, 1828), and Lymnaea columella (Say, 1817).
Citation: Brazilian Journal of Biological Sciences
PubDate: Mon, 30 Jun 2014 00:00:01 GMT
Issue No: Vol. 1, No. 1 (2014)
- Nine new records to inventory of continental mollusc species from Santa
Catarina State, Central Southern Brazil
Authors: A. Ignacio Agudo-Padron; Jefferson Souza da Luz, Luis Adriano Funez, Ana Elisa Zermiani
Pages: 15 - 20
Abstract: A new total of nine continental gastropod forms are incorporated to the previous systematic malacological inventory of Santa Catarina's State/SC, central southern Brazil region, the species Helicina schereri Baker, 1913, Assiminea sp, Lamellaxis clavulinus (Potiez & Michaud, 1838), Lamellaxis (Leptopeas) cf. mizius Marcus & Marcus, 1968, Plekocheilus (Eurytus) sp, Rhinus cf. longisetus (Moricand, 1846), Simpulopsis cf. ovata Sowerby, 1822, Megalobulimus klappenbachi Leme, 1964, and Zilchogyra cleliae Weyrauch, 1965. Included in eight genera and seven families, raise the state record for 220 species and subspecies regionally known (190 gastropods - 148 terrestrial, 2 amphibian and 40 limnic/freshwater -, and 30 freshwater bivalves).
Citation: Brazilian Journal of Biological Sciences
PubDate: Mon, 30 Jun 2014 00:00:01 GMT
Issue No: Vol. 1, No. 1 (2014)
- Biota toxicity to herbicide Paraquat in Brazilian Northeast littoral
reservoirs: need for a biomonitoring program for watershed management
Authors: Jose Etham de Lucena Barbosa; Takako Watanabe, Robert Anthony Coler, Ronilson Jose da Paz
Pages: 21 - 27
Abstract: We present the original results of set of toxicity tests of the herbicide Paraquat, used in sugar cane fields, and the cultivation of pineapple and, Eucalyptus, on zooplankton and benthos organisms from reservoirs of the Brazilian Northeast Littoral Zone. We demonstrate that Macrobrachium amazonicum (prawn), Pomacea lineata (snail) and Daphnia similis (cladoceran) are several orders of magnitude more sensitive than test organisms (aquatic insects, amphipods, and cladocerans) classically used in temperate regions. Combining typical herbicide application data together with rainfall and water level seasonality of Gramame Reservoir, we emphasize highly fluctuation patterns of toxicity for the other reservoirs in the region. Therefore, they urge the enforcement of management policies based on the implementation of a watershed-scaled biomonitoring program using the here employed test organisms. Reservoirs of the Brazilian Northeast was deteriorating (eutrophication, pollution; including frequent cyanobacteria blooming, often toxic), and multi-use management, particularly to meet the water drinking demand of rural and urban populations, is now a crucial need. The suggestion of implementing a biomonitoring program based on toxicity tests of particularly sensitive organisms are then more appropriate than a costly large-scale high technology program. The use of locally dominant organisms instead of temperate standards is essential. The demonstrated high sensitivity of Daphnia species to Paraquat may well explain why rotifers often dominate the zooplankton in reservoirs of this region, as herbicides and pesticides are widely as well as intensively used in the Northeast Semi-Arid Regions (e.g. Agreste and Sertão).
Citation: Brazilian Journal of Biological Sciences
PubDate: Mon, 30 Jun 2014 00:00:01 GMT
Issue No: Vol. 1, No. 1 (2014)
- Chronic toxicity bioassay with ampularid snail Pomacea lineata (Spix 1824)
(Mollusca: Prosobranchia)
Authors: Luiz Eduardo Lima Melo; Ronilson Jose da Paz, Jose Etham de Lucena Barbosa, Takako Watanabe, Judith Font Batalla, Robert Anthony Coler
Pages: 28 - 34
Abstract: We present the original results of set of toxicity tests of the herbicide Paraquat, used in sugar cane fields, and the cultivation of pineapple and, Eucalyptus, on zooplankton and benthos organisms from reservoirs of the Brazilian Northeast Littoral Zone. We demonstrate that Macrobrachium amazonicum (prawn), Pomacea lineata (snail) and Daphnia similis (cladoceran) are several orders of magnitude more sensitive than test organisms (aquatic insects, amphipods, and cladocerans) classically used in temperate regions. Combining typical herbicide application data together with rainfall and water level seasonality of Gramame Reservoir, we emphasize highly fluctuation patterns of toxicity for the other reservoirs in the region. Therefore, they urge the enforcement of management policies based on the implementation of a watershed-scaled biomonitoring program using the here employed test organisms. Reservoirs of the Brazilian Northeast was deteriorating (eutrophication, pollution; including frequent cyanobacteria blooming, often toxic), and multi-use management, particularly to meet the water drinking demand of rural and urban populations, is now a crucial need. The suggestion of implementing a biomonitoring program based on toxicity tests of particularly sensitive organisms are then more appropriate than a costly large-scale high technology program. The use of locally dominant organisms instead of temperate standards is essential. The demonstrated high sensitivity of Daphnia species to Paraquat may well explain why rotifers often dominate the zooplankton in reservoirs of this region, as herbicides and pesticides are widely as well as intensively used in the Northeast Semi-Arid Regions (e.g. Agreste and Sertão).
Citation: Brazilian Journal of Biological Sciences
PubDate: Mon, 30 Jun 2014 00:00:01 GMT
Issue No: Vol. 1, No. 1 (2014)
- V. 1, No. 2
PubDate: Wed, 31 Dec 2014 00:00:01 GMT
- V. 1, No. 1
PubDate: Mon, 30 Jun 2014 00:00:01 GMT
