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Journal articles on the topic 'Periwinkle'

Author: Grafiati

Published: 4 June 2021

Last updated: 25 July 2025

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1

García-Souto, Daniel, Sandra Alonso-Rubido, Diana Costa, et al. "Karyotype Characterization of Nine Periwinkle Species (Gastropoda, Littorinidae)." Genes 9, no. 11 (2018): 517. http://dx.doi.org/10.3390/genes9110517.

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Periwinkles of the family Littorinidae (Children, 1834) are common members of seashore littoral communities worldwide. Although the family is composed of more than 200 species belonging to 18 genera, chromosome numbers have been described in only eleven of them. A molecular cytogenetic analysis of nine periwinkle species, the rough periwinkles Littorina arcana, L. saxatilis, and L. compressa, the flat periwinkles L. obtusata and L. fabalis, the common periwinkle L. littorea, the mangrove periwinkle Littoraria angulifera, the beaded periwinkle Cenchritis muricatus, and the small periwinkle Mela

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2

Abu, O. M. G., and N. M. Achilike. "Influence of processing on consumer preference and pattern of consumption of periwinkle (Tympanotonus fuscatus) in some coastal communities of Rivers State." Journal of Aquatic Sciences 31, no. 2C (2017): 597–604. http://dx.doi.org/10.4314/jas.v31i2c.26.

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This study investigated the influence of processing on consumer preference and consumption patterns of periwinkle (Tympanotonus fuscatus) in selected riverine communities of Rivers State, Nigeria. The results of the study indicated that all of the respondents (100.0%) often consumed processed periwinkle while raw ones are not consumed (0.00%). Among the processed periwinkle: roasted ones were more preferable (96.8%), based on taste quality (99.0%), texture (100.00%) and flavour (100.00%). While boiled periwinkles were preferred to others based on colour acceptance quality. From this study the

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Cross, M. A., S. W. B. Irwin, S. Fitzpatrick, and N. Manga. "Trematode parasite influence on copper, iron and zinc content of polluted Littorina littorea: infection, host sex and time effects." Journal of the Marine Biological Association of the United Kingdom 83, no. 6 (2003): 1269–72. http://dx.doi.org/10.1017/s0025315403008634.

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Temporal variations in copper, iron and zinc levels in the periwinkle, Littorina littorea, were investigated to determine whether levels were affected by the sex of the organisms and/or by the presence of two species of trematode parasite. Significant monthly changes in concentrations of all these metals were found, with levels varying according to periwinkle sex and parasite infection. Periwinkles infected by either Cryptocotyle lingua or Renicola roscovita had reduced copper and iron concentrations compared to same-sex uninfected periwinkles, although infected periwinkles generally contained

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4

Nejat, N., G. Vadamalai, K. Sijam, and M. Dickinson. "First Report of Spiroplasma citri (-Induced) Associated with Periwinkle Lethal Yellows in Southeast Asia." Plant Disease 95, no. 10 (2011): 1312. http://dx.doi.org/10.1094/pdis-03-11-0251.

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Madagascar periwinkle, Catharanthus roseus (L.) G. Don, is a member of the Apocynaceae plant family that is native to Madagascar and produces dimeric terpenoid indole alkaloids that are used in the treatment of hypertension and cancer. Periwinkle as an indicator plant is highly susceptible to phytoplasmas and spiroplasma infection from different crops, and has been found to be naturally infected with spiroplasmas in Arizona, California, and the Mediterranean countries. In this study, surveys of suspected diseased periwinkles were conducted in various regions of Selangor State, Malaysia. Periwi

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5

C.I.A., Nwoko, and Ukiwe L.N. "Heavy Metals Concentrations in the Shell and Tissue of Periwinkle (Tympanotonus fuscatus) and Giant Land Snail (Achatina fulica) in Soku Community of Niger Delta, Nigeria." JOURNAL OF ADVANCES IN CHEMISTRY 10, no. 3 (2014): 2426–29. http://dx.doi.org/10.24297/jac.v10i3.6636.

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The pollution of aquatic ecosystem by heavy metals has assumed serious proportions due to their toxicity and accumulative behaviour. River dams are especially at risk of contamination by different contaminants from anthropogenic sources including heavy metals since change of sediment regime often occur. The accumulation of five heavy metals; chromium (Cr), Cadmium (Cd), Lead (Pb), Copper (Cu) and Arsenic (As) in periwinkle, (Tympanotonus fuscatus, var, radula) and giant land snail (Achatina fulica) shell and soft tissue collected from Soku Community, Akuku-toru Local Government Area of Rivers

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6

Okpeku, M., MB Nodu, A. Essien, and CT Fekorigha. "Morphologic variations of periwinkle and profiles of periwinkle marketers and harvesters in two states in the Niger delta area of Nigeria." Journal of Agriculture, Forestry and the Social Sciences 11, no. 2 (2015): 140–47. http://dx.doi.org/10.4314/joafss.v11i2.16.

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Periwinkles are invertebrates rich in protein and omega-3 fatty acids. These make them relished delicacies. Three hundred and fifteen (315) individual periwinkles were hand-picked from mangrove swamp river banks and intertidal zones of Twon-Brass in Bayelsa State and Abonnema town of Rivers State. Shell length and the weight of both the meat and shell were taken with Veneer caliper and a sensitive electronic scale balance respectively. Information on the economics of production was gathered from market women and harvesters through the use of structured questionnaires. The present study indenti

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ENUNEKU, A. A., L. I. EZEMONYE, and P. AGBURE. "HISTOPATHOLOGICAL EFFECTS AND BIOLOGICAL ACCUMULATION OF COPPER IN THE PERIWINKLE (Tympanotonus fuscatus var. radula)." Nigerian Journal of Life Sciences (ISSN: 2276-7029) 3, no. 1 (2013): 42–50. http://dx.doi.org/10.52417/njls.v3i1.106.

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Histopathological effects and bioaccumulation of copper in the periwinkle, Tympanotonus fuscatus var. radula was assessed in the laboratory for 30 days. Periwinkles were exposed to sub lethal concentrations (0.5, 1, 2, and 4 mg/l) of copper. The test was conducted using the Organization for Economic Cooperation and Development (OECD) protocol #218 in a sediment medium. There were three replicate plastic tanks per treatment and 6 periwinkles per tank. Control groups without copper were also prepared. T. fuscatus var. radula bioaccumulated copper. It was observed that bioaccumulation of copper i

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8

O., Ezomoh, O., Bigbo, F. M., Loveday, E., and Wodu Ebizimor. "Vitamin and Mineral Contents in Shrimps, Oysters and Periwinkles Harvested from Brass Local Government Area in Bayelsa State, Nigeria." EAS Journal of Nutrition and Food Sciences 4, no. 5 (2022): 123–27. http://dx.doi.org/10.36349/easjnfs.2022.v04i05.001.

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Sea foods have been a very good source of nutrients to man. In this research, the nutritional value of three sea foods namely shrimps, oysters and periwinkles obtained from Brass Local Government Area, Bayelsa State were investigated. Vitamins were analyzed with HPLC, while the minerals were determined using AAS. From the findings, phosphorus is the most concentrated mineral in the three seafood studied, with significantly (p≥0.05) higher concentrations of 3112.860ppm±15.204, 2117.863ppm±22.625 and 2906.524ppm±31.850 in shrimp, oyster and periwinkle respectively. The least concentrated mineral

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Deis, Donald R., John W. Fleeger, Stefan M. Bourgoin, Irving A. Mendelssohn, Qianxin Lin, and Aixin Hou. "Shoreline oiling effects and recovery of salt marsh macroinvertebrates from the Deepwater Horizon Oil Spill." PeerJ 5 (August 16, 2017): e3680. http://dx.doi.org/10.7717/peerj.3680.

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Salt marshes in northern Barataria Bay, Louisiana, USA were oiled, sometimes heavily, in the aftermath of the Deepwater Horizon oil spill. Previous studies indicate that fiddler crabs (in the genus Uca) and the salt marsh periwinkle (Littoraria irrorata) were negatively impacted in the short term by the spill. Here, we detail longer-term effects and recovery from moderate and heavy oiling over a 3-year span, beginning 30 months after the spill. Although neither fiddler crab burrow density nor diameter differed between oiled and reference sites when combined across all sampling events, these tr

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Carroll, John M., Morgan B. Church, and Christopher M. Finelli. "Periwinkle climbing response to water- and airbone predator chemical cues may depend on home-marsh geography." PeerJ 6 (October 1, 2018): e5744. http://dx.doi.org/10.7717/peerj.5744.

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The salt marsh periwinkle, Littorina irrorata, exhibits a spatial refuge from predation by climbing the stems of Spartina alterniflora in order to avoid benthic predators. Salt marsh periwinkles have a broad geographic distribution, and for many species, responses to predators also varies with biogeography. This study sought to determine if the geographical location of the home marsh influenced the response of periwinkles (climbing height) to blue crab predator cues both via air and water. Snails from Louisiana (LA) climbed higher in general than those from North Carolina (NC), regardless of c

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McGovern, R. J., and T. E. Seijo. "Outbreak of Black Root Rot in Catharanthus roseus Caused by Thielaviopsis basicola." Plant Disease 83, no. 4 (1999): 396. http://dx.doi.org/10.1094/pdis.1999.83.4.396c.

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A bedding plant grower in southwest Florida reported severe losses in potted Catharanthus roseus (Madagascar periwinkle) transplanted on various dates in December 1997. Symptoms included yellowing of lower leaves, defoliation, black root rot, and plant death. Thielaviopsis basicola was consistently isolated from blackened roots on a selective medium (1). A disease survey was conducted during mid March 1998 of 7,500 periwinkle plants in the two cultivar series Pacific (cvs. Punch, Red, and White) and Cooler (cvs. Grape, Icy, Peppermint, Pink, and Raspberry). Black root rot symptoms were observe

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APOLINÁRIO, M., R. COUTINHO, and M. H. BAETA-NEVES. "Periwinkle (Gastropoda: Littorinidae) habitat selection and its impact upon microalgal populations." Revista Brasileira de Biologia 59, no. 2 (1999): 211–18. http://dx.doi.org/10.1590/s0034-71081999000200005.

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The present study examines habitat selection and grazing pressure of the periwinkle Nodilittorina lineolata (Gmelin, 1791) on the rocky shore of Arraial do Cabo, RJ, Brazil (lat. 23°S, long. 43°W). Transfer experiments suggest that periwinkles actively select the mid intertidal, where the cirripede Chthamalus bisinuatus Pilsbry is the dominant sessile invertebrate. We also conducted a caging experiment in the middle intertidal, manipulating grazers and light, to assess the impact of grazing upon microalgal density. Grazing pressure significantly reduced microalgal abundance at the mid-intertid

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13

Chang, Chung-Jan. "Pathogenicity of Aster Yellows Phytoplasma and Spiroplasma citri on Periwinkle." Phytopathology® 88, no. 12 (1998): 1347–50. http://dx.doi.org/10.1094/phyto.1998.88.12.1347.

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Using Murashige and Skoog (MS) as a basal medium, the effects of varying levels and combinations of plant growth regulators required for shoot tip and root proliferation in healthy and aster yellows phytoplasma (AYP)- and Spiroplasma citri-infected periwinkle (Catharanthus roseus) shoots were studied. Number of shoots and fresh and dry mass of healthy and AYP-infected shoots increased when benzyladenine (BA) concentrations were increased from 0.5 to 4 mg/liter. The maximum number of shoots for both healthy and AYP-infected plants was obtained when grown in MS medium supplemented with BA at 4 m

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Nofriarno, Nugroho, Budi Setiadi Daryono, Avia Purnama Saputri, and Estiyani Indraningsih. "ANALISIS FENOTIPE DAN PLOIDI TANAMAN MELON (Cucumis melo L.) HASIL PERLAKUAN EKSTRAK ETANOLIK DAUN TAPAK DARA (Catharanthus roseus [L] G. Don.)." Jurnal Biota 4, no. 2 (2018): 62–67. http://dx.doi.org/10.19109/biota.v4i2.2061.

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Anti-mitotic agents such as colchicine have been used to induce polyploidy in various plants. On the other hand, vincristine and vinblastine are also antimitotic agent extracted from Periwincle (Catharanthus roseus [L] G. Don) were previously studied to produce autotetraploid on shallot tuber (Allium cepa L.). Therefore, in this study phenotype character and ploidy of muskmelon (Cucumis melo L.) produced by etanolic extract of periwikle leaves were determined. The effects of different concentration of etanolic extract of periwinkle leaves on polyploidy induction in muskmelon were examined. Mel

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Baumann, Matthew S., Gail F. Fricano, Katie Fedeli, Claire E. Schlemme, Mary C. Christman, and Melissa Vernon Carle. "Recovery of Salt Marsh Invertebrates Following Habitat Restoration: Implications for Marsh Restoration in the Northern Gulf of Mexico." Estuaries and Coasts 43, no. 7 (2018): 1711–21. http://dx.doi.org/10.1007/s12237-018-0469-5.

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Abstract Recovery following salt marsh restoration in the northern Gulf of Mexico is investigated using meta-analysis for two salt marsh indicator invertebrates, the periwinkle snail (Littoraria irrorata) and amphipod crustaceans (Amphipoda). These invertebrates serve key marsh ecosystem functions including facilitating nutrient cycling and serving as prey for larger ecologically and economically important species. Recovery of periwinkles in restored marshes compared to reference sites is quantified by progression in population density and, because the species is long-lived (~ 10 years), in te

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Dubey, Roshan Kumar, Satyam Shukla, Zeashan Hussain, and Mohammad Tasin. "A Systematic Review of the Pharmacological and Phytochemical Profiles of Madagascar periwinkle as Potential Dietary Supplement." Chinese Journal of Applied Physiology 39 (2023): e20230002. http://dx.doi.org/10.62958/j.cjap.2023.002.

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Madagascar periwinkle (Catharanthus roseus) is a plant species known for its rich pharmacological and phytochemical properties. This systematic review aims to comprehensively evaluate the potential of Madagascar periwinkle as a dietary supplement. A thorough search of relevant databases yielded studies focusing on the pharmacological activities and phytochemical constituents of Madagascar periwinkle. The review highlights the diverse pharmacological effects of Madagascar periwinkle, including anti-cancer, anti-diabetic, anti-inflammatory, and antimicrobial properties, among others. Furthermore

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Henderson-Cole, Janet C., and Michael A. Schnelle. "Effect of Prodiamine and Oxadiazon on Growth of Bedding Plants and Ground Covers." Journal of Environmental Horticulture 11, no. 1 (1993): 17–19. http://dx.doi.org/10.24266/0738-2898-11.1.17.

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Abstract Four bedding plant species, rose periwinkle, petunia, geranium, and scarlet salvia; four ground cover cultivars, golden Japanese barberry, common periwinkle, Bowles periwinkle, and greater periwinkle; and pots seeded with two weed species, crabgrass or pigweed were sprayed with 0, 1.1 or 4.5 kg ai/ha (0, 1.0 or 4.0 lb/A) prodiamine (Barricade) or 2.2 kg ai/ha (2.0 lb/A) oxadiazon (Ronstar). Heights or dry weights or both of all bedding plant species decreased linearly with increasing prodiamine (Barricade) application rates. Ground covers were not affected by oxadiazon (Ronstar) or pr

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Obidiegwu, E.O., E.F. Ochulor, and E.O. Awojobi. "A Study of Insulating Properties of Refractory Bricks Produced from the Blend of Fireclay and Periwinkle Shell." Nigerian Research Journal of Engineering and Environmental Sciences 6, no. 2 (2021): 495–502. https://doi.org/10.5281/zenodo.5805093.

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<em>This paper studied the insulating properties of refractory bricks produced from a blend of fire clay and periwinkle shells to assess the possibility of developing a new material for lining furnaces with improved efficiency. Various samples were produced from 75 to 100 wt.% of clays with particle sizes of 300 µm, blended with 0-25 wt.% periwinkle shells of 150 µm. The samples were fired at temperatures ranging from 950 <sup>o</sup>C-1100 <sup>o</sup>C for 3 hours at the rate of 2.5 <sup>o</sup>C/minutes using an electric furnace. The chemical compositions of the clays and periwi

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Kumari, Lalesh, and Joginder Singh. "A Review on leaf blight of Periwinkle (Catharanthus roseus L.) G. Don caused by Alternaria alternata (fr.) Keisslar." International Journal of Agricultural Invention 7, no. 2 (2022): 133–37. https://doi.org/10.46492/ijai/2022.7.2.3.

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Catharanthus roseus (L) G. Don (syn. Vinca rosea (L), Lochnera rosea (L) Reichb) commonly known as Sadabahar or Periwinkle, belongs to the family Apocynaceae. The Periwinkle plant is attacked by Alternaria alternata (Fr.) Kessler causing leaf blight disease. The genus Alternaria belongs to the family Dematiaceae of imperfect class Deuteromycetes. The fungus Alternaria alternata has a wide host range and infects a variety of crops. In the current paper a review on the leaf blight of periwinkle is described with reference to Some important diseases of periwinkle , symptomatology, survival of pat

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Eboibi, O., O. I. Akpokodje, and H. Uguru. "Evaluation of organic enhancer on the mechanical properties of periwinkle shells concrete." Journal of Engineering Innovations and Applications 1, no. 1 (2022): 13–22. http://dx.doi.org/10.31248/jeia2022.020.

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The utilization of green materials in engineering applications has become a necessity due to the negative environmental and health consequences of most synthetic materials. Enhancement of periwinkle shell concrete through corn starch treatment was investigated in this study. Twenty-five (25) sets of concrete were produced with various corn starch concentrations (0, 0.5, 1, 1.5 and 2%); and periwinkle shell quantities varying from 0 kg (0%) to 2 kg (20%) were used as a partial replacement for granite. All the concrete sets produced and their mechanical properties were determined in accordance w

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Babalola, R., and U. Aniediong. "EFFICIENCY OF ACTIVATED PERIWINKLE CHAR IN THE RECOVERY OF LEAD (II) ION FROM INDUSTRIAL WASTEWATER USING FIXED BED ADSORPTION PROCESS." JOURNAL OF THE NIGERIAN SOCIETY OF CHEMICAL ENGINEERS 37, no. 1 (2022): 103–11. http://dx.doi.org/10.51975/22370110.som.

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The discharge of untreated industrial wastewater containing lead and the indiscriminate disposal of periwinkle shell causes lead poisoning and blockage of drainage. The cost of industrial wastewater treatment is demanding; thus the research is focused on creating wealth from waste periwinkle shell as a cheap adsorbent material to reduce the cost of lead removal from industrial wastewater. Therefore, activated periwinkle shell char (APSC) in removal of lead Pb (II) ion from industry wastewater was investigated using fixed-bed adsorption column. APSC was prepared by treating the periwinkle Char

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RUSLAN, HANIS NADIAH, Khairunisa Muthusamy, Sharifah Maszura Syed Mohsin, and M. S. Kirgiz. "Periwinkle Shell as Mixing Ingredient in Concrete: A Review." CONSTRUCTION 1, no. 2 (2021): 21–30. http://dx.doi.org/10.15282/construction.v1i2.6499.

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Growing population which also pushes for rising demand for seafood results in a generation of seashells which are thrown as environmental pollution waste after the edible meat is consumed. Meanwhile, the utilisation of natural resources as mixing ingredients for the production of concrete materials continues to increase over the year. The use of periwinkle shells as mixing ingredients in concrete materials can lower the dependency on natural aggregate supply. This paper discusses the properties of periwinkle shell and method of treatment prior to their usage as a cement and coarse aggregate as

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Oyedoh, E. A., and U. U. Ekesiobi. "Effects of Preparation Conditions on Surface Properties and Yields of Periwinkle Shell Activated Carbon." Journal of Applied Sciences and Environmental Management 27, no. 6 (2023): 1083–91. http://dx.doi.org/10.4314/jasem.v27i6.6.

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This study explored the potential of periwinkle shells as precursor material for activated carbon preparation. The periwinkle shell was activated using the potassium hydroxide method. The periwinkle shell activated carbons prepared were characterized in terms of physico-chemical properties, functional groups, and yield and surface characteristics. The central composite design of response surface methodology was used for analysis and optimization of carbonization conditions of the periwinkle shell. The carbonization conditions considered and their range of values are carbonization temperature o

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Mahriani, Mahriani, Rosita Dewi Wulandari, and Susantin Fajariyah. "EFFECT OF PERIWINKLE (CATHARANTHUS ROSEUS) LEAF EXTRACT ON LIVER HISTOLOGY OF MICE (MUS MUSCULUS L) AFTER ASPARTAME INDUCE." BIOLINK (Jurnal Biologi Lingkungan Industri Kesehatan) 8, no. 2 (2022): 126–32. http://dx.doi.org/10.31289/biolink.v8i2.5161.

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Aspartame is an artificial sweetener in foods and beverages. Continuous use of aspartame will result in oxidative stress in the liver. So we need antioxidants from outside the body such as periwinkle leaves.This study aims to determine the effect of periwinkle leaves (Catharanthus roseus L) on aspartame-induced liver histology. This study used 24 male mice divided into 4 groups, namely negative control (K-) without treatment; Positive control (K +) treatment of aspartame; D1: treatment of aspartame and periwinkle extract doses of 0.42 mg/kg. D2: aspartame and periwinkle extract doses of 0.84 m

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Osarenmwinda, J. O., and A. O. Awaro. "The Potential Use of Periwinkle Shell as Coarse Aggregate for Concrete." Advanced Materials Research 62-64 (February 2009): 39–43. http://dx.doi.org/10.4028/www.scientific.net/amr.62-64.39.

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The potential of periwinkle shell as coarse aggregate for concrete was studied in this paper. The properties of concrete made with periwinkle shell as coarse aggregate were examined. Test conducted on the concrete was compressive strength test. Prescribed mix designs of 1:1:2, 1:2:3, 1:4:6, 1:2:4 and 1:3:5 were used to produce concrete cubes used for testing. The different constituents that make up the periwinkle concrete are presented in ratio form as cement: sharp Sand: Periwinkle shell. Batching was done by volume and the corresponding weight recorded. The cubes were made and tested at hydr

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Ueno, B., C. K. Funada, M. A. Yorinori, and R. P. Leite. "First Report of Xylella fastidiosa on Catharanthus roseus in Brazil." Plant Disease 82, no. 6 (1998): 712. http://dx.doi.org/10.1094/pdis.1998.82.6.712a.

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In 1998, plants of periwinkle (Catharanthus roseus L.) showing small leaves, short internodes, and dieback symptoms were observed in a garden at the Instituto Agronomico do Parana (IAPAR), Londrina, PR, Brazil. Stems of these plants were cut into short sections and the sap extracted from the tissue by squeezing with pliers. The sap was blotted onto a glass slide and examined for the presence of bacteria by light microscopy (×400). Microscopy observations revealed the presence of a large number of slender, rod-shaped bacterial cells. The bacteria present in the stems of periwinkle were isolated

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Ivanauskas, Algirdas, Junichi Inaba, Yan Zhao, Kristi D. Bottner-Parker, and Wei Wei. "Differential Symptomology, Susceptibility, and Titer Dynamics Manifested by Phytoplasma-Infected Periwinkle and Tomato Plants." Plants 13, no. 6 (2024): 787. http://dx.doi.org/10.3390/plants13060787.

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Phytoplasmas are intracellular pathogenic bacteria that infect a wide range of plant species, including agriculturally important crops and ornamental trees. However, our understanding of the relationship between symptom severity, disease progression, and phytoplasma concentration remains limited due to the inability to inoculate phytoplasmas mechanically into new plant hosts. The present study investigated phytoplasma titer dynamics and symptom development in periwinkle and tomato, both infected with the same potato purple top (PPT) phytoplasma strain using a small seedling grafting approach.

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OKON, B. I., and B. K. OGUNMODEDE. "EFFECTS OF REPLACING DIETARY FISH MEAL WITH PERIWINKLE FLESH ON THE PERFORMANCE OF BROILER CHICKENS." Nigerian Journal of Animal Production 22, no. 1 (2021): 37–43. http://dx.doi.org/10.51791/njap.v22i1.2026.

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Broiler chickens were fed varying levels of Palm Kernel Cake (PKC), fishmeal and dried Periwinkle flesh. The use of isocaloric and isonitrogenous rations showed that feeding of 6% periwinkle flesh or 2% fishmeal along with 25% PKC significantly improved live weight, (P<0.05) weight gain and feed conversion ratio. The two groups of birds fed these rations performed better than those fed either 15% PKC with 2% fishmeal or 25% PKC along with a mixture of 2.5% periwinkle flesh and 1% fishmeal.

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Marković, Monika, Jasna Šoštarić, Antonija Kojić, et al. "Zinnia (Zinnia elegans L.) and Periwinkle (Catharanthus roseus (L.) G. Don) Responses to Salinity Stress." Water 14, no. 7 (2022): 1066. http://dx.doi.org/10.3390/w14071066.

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The study of salinity stress in irrigated floriculture can make a significant contribution to the preservation of freshwater sources. To analyze the morphological and aesthetic responses of zinnia (Zinnia elegans L.) and periwinkle (Catharanthus roseus (L.) G. Don) to different salinity stress levels, the following treatments were performed: s0 = municipal water (control), s1 = 3 dS m−1, s2 = 4.5 dS m−1, and s3 = 6 dS m−1. The growth of zinnia (flower number, plant height, branch and leaf number, total fresh and dry biomass, and root length) was linearly reduced by increasing salinity levels,

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Nwaka, S. U., and J. P. Udoh. "Evaluation of Nutritional Profile of Periwinkle (Tympanotonus Fuscatus) from Ekeuku Market, Owerri, Imo State." Journal of Aquatic Sciences 37, no. 1 (2023): 63–71. http://dx.doi.org/10.4314/jas.v37i1.7.

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Shellfish meat are popular due to their high protein content, low carbohydrate values, low fat/cholesterol profile, and the presence of some vital minerals such as copper, calcium, zinc, iron, and manganese. High nutritional values in shellfish has resulted in an increase in demand for the resource which eventually influences the economic growth in both local and international markets. The nutritional profile of periwinkle (Tympanotonus fuscatus) was studied with the aim of providing health related information to consumers. The proximate analysis was evaluated using standard analytical procedu

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H.D., Mac-Eteli, and Nelson T.A. "Modelling Reviewed Hydraulic Indices of Periwinkle Shell Ash Occasioned by Variations in Calcination Temperature." International Journal of Mechanical and Civil Engineering 5, no. 1 (2022): 73–84. http://dx.doi.org/10.52589/ijmce-uaufof8l.

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Periwinkle shellfish can be found in abundance in the Niger Delta's wetlands. Periwinkle shells are frequently piled in open fields and landfills, resulting in pollution and the development of disease-carrying organisms. Attempts have been made to employ periwinkle shell ash (PSA) as recycled materials in cement-based products in order to manage periwinkle shell by-products, preserve natural resources, and minimize building expenses. A better understanding of results obtained can be established using statistical tools in the analysis and modelling of the trends established with respect to revi

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Bertaccini, Assunta, Robert E. Davis, and Ing Ming Lee. "In Vitro Micropropagation for Maintenance of Mycoplasma-like Organisms in Infected Plant Tissues." HortScience 27, no. 9 (1992): 1041–43. http://dx.doi.org/10.21273/hortsci.27.9.1041.

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A collection of mycoplasma-like organisms (MLOs) was maintained in plant tissues micropropagated in vitro. MLO-infected plants included Chrysanthemum frutescens L. with chyrsanthemum yellows disease, Gladiolus sp. L. with “germ fins,” Hydrangea macrophilla (Thunb.) DC. with virescence, Rubus fruticosus L. with rubus stunt, and periwinkle [Catharanthus roseus (L.) G. Don] singly infected by the following MLOs: Italian periwinkle virescence, chrysanthemum yellows, North American aster yellows, Italian periwinkle stunt, American periwinkle little leaf. Shoots micropropagated in vitro exhibited sy

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SalisuIjiji, Salawu, and Saliu Adeiza Mumuni. "Effect of Periwinkle Particulate on the Mechanical Properties of Al7075 Alloy Composite." International Journal of Latest Technology in Engineering, Management & Applied Science XII, no. XI (2023): 49–54. http://dx.doi.org/10.51583/ijltemas.2023.121106.

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The mechanical evaluation of Al7075/ periwinkle ash particulate composites was studied. Al7075/periwinkle ash particulate composites at different weight percentage (2%, 4%, 6% and 8%) of periwinkle ash particles were produced using the stir casting method. The as-cast samples consisting of varied weight percentage of 0, 2, 4, 6, and 8% amount of periwinkle ash particulate were tested for mechanical properties such as hardness and tensile tests andtribological properties such as wear and friction test. The results were compared with the unreinforced sample under the same conditions. It was obse

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Yikarebogha, Y., K. C. Igwilo, N. Uwaezuoke, J. U. Obibuike, and K. K. Ihekoronye. "Performance Evaluation of Periwinkle Shell Powder as Alternative to Silica Flour in High Temperature Well Cementing Operation." International Journal of Engineering and Advanced Technology Studies 13, no. 1 (2025): 44–56. https://doi.org/10.37745/ijeats.13/vol13n14456.

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The effect of high temperature on cement slurry is a problem in the oil and gas drilling industry. Over the years, silica flour was used to prevent the strength of cement that results from high temperature effect. But the silica flour is imported and not environmentally friendly. Hence, the need for local material that can serve as alternative becomes imperative. Periwinkle shell (Tympanostomus fuscatus) was tested in the laboratory to determine its potential use in place of the synthetic silica flour. The shell was pulverised, calcinated, and subjected to laboratory test following the require

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Ikechukwu, I. F., O. S. Onwuka, and M. C. Nwogu. "Production of Periwinkle Shell Reinforced Grindstone." Journal of Applied Sciences and Environmental Management 26, no. 6 (2022): 1157–62. http://dx.doi.org/10.4314/jasem.v26i6.24.

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The study involves the use of periwinkle shell particles as reinforcement in the production of grindstone to meliorate its physical and mechanical properties. The assessment of the properties of the periwinkle shell reinforced concrete grindstone showed that reinforcement yielded several promising results. The compressive strength was higher for samples with lower water/cement ratio (7%) than those with higher water/cement ratio (10%). The introduction of concrete that contains periwinkle shells as fine aggregates resulted in the loss of smooth like appearance and reduction in weight. The loss

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Odili, Cletus Chiosa, Oluwashina Philips Gbenebor, Henry Adekola Haffner, and Samson Oluropo Adeosun. "A Morphological Characterization of High Yield Chitin from Periwinkle Shells." Journal of Casting & Materials Engineering 5, no. 4 (2020): 61–65. http://dx.doi.org/10.7494/jcme.2021.5.4.61.

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Research on obtaining chitin from periwinkle shell is scarce due to the very low yield of chitin from this kind of shell. Thisstudy reports a method of processing periwinkle shells to obtain high yield, bio-medically suitable chitin. The experimentwas designed using IM and 2M concentrations of HCl for demineralization and a 1M NaOH concentration for deproteinization. FTIR, SEM, XRD and DTA analytical tools were used to characterize the extracted chitin. The FTIR spectral, XRD patterns and SEM analysis, revealed the complete removal of calcium carbonate by the acid concentrations used. The part

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Nerkar, Amit Gajanan, Rushikesh P. Nagarkar, and Shubhangi Badar. "Ethnopharmacological review of vinca plant for anticancer activity." Current Trends in Pharmacy and Pharmaceutical Chemistry 4, no. 4 (2022): 148–51. http://dx.doi.org/10.18231/j.ctppc.2022.026.

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The strive of this assessment shows that Vinca rosea, many obviously grown vegetation round us which can be used for medicinal purposes. It has many known names like vinca Rosea, Madagascar periwinkle, vibrant eyes, Cape periwinkle, graveyard plant, old maid, crimson periwinkle, rose periwinkle myrtle. Ayurveda is the Indian conventional device of medication which focuses on the scientific capability of plant life. Catharanthus roseus is one plant recognized nicely in Ayurveda. It is known for its antitumour, anti-diabetic, anti-microbial, anti-oxidant and antimutagenic effects. It is an everg

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Mercy Nnam, Ngozi, Catherine Achese Orisa, and Ijioma Okorie. "Functional and Sensory Properties of Infant Complementary Foods Formulated From Millets, Orange-Flesh Sweet Potatoes, Carrots, Periwinkle and Oyster." Journal of Genetic Engineering and Biotechnology Research 6, no. 3 (2024): 01–07. http://dx.doi.org/10.33140/jgebr.06.03.01.

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The study evaluated the functional and sensory properties of infant complementary foods formulated from millets, orange-flesh sweet potatoes, carrots, periwinkle and oyster. Experimental/cross-sectional design was used. Millet, orange-flesh sweet potato (OFSP), carrots, periwinkle and oyster were purchased, processed into flour using standard methods. The complementary food was formulated on protein basis for infants 6–12 months. The formulated foods were millet/OFSP flours (70:30), millet/ OFSP/carrot/periwinkle (49:29:7:15), and millet/OFSP/carrot/oyster (65:20:5:10). Functional properties w

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F.G., Bob-Manuel, Wokoma O.A.F., Edoghotu A.J., Jacob W.M., and Owo A.A. "Bioaccumulation of Heavy Metals in the Tissues of Periwinkle and Clam from the Mud Flats of Andoni River, Rivers State, Nigeria." African Journal of Environment and Natural Science Research 6, no. 1 (2023): 1–8. http://dx.doi.org/10.52589/ajensr-gsvmuqiv.

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Bioaccumulation of heavy metals in periwinkle (Tympanotonus fuscatus) and clam (Senilla senilis) collected from the mud flats of Andoni River was carried out over a six months period. Surface sediment samples were collected with a hand trowel into polythene bags while periwinkle and clam samples were collected by hand picking during low tide, washed thoroughly and transported in an ice-container to the Research Laboratory of the Department of Biology, Ignatius Ajuru University of Education, Port Harcourt for further analysis. Sample preparation followed standard analytical protocols and heavy

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OKON, B. I., and B. K. OGUNMODEDE. "CARCASS CHARACTERISTICS OF BROILERS FED PERIWINKLE FLESH AND PALM KERNEL CAKE." Nigerian Journal of Animal Production 23, no. 1 (2021): 16–20. http://dx.doi.org/10.51791/njap.v23i1.2029.

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Feeding 180 hyperco broiler chicks varying levels of palm kernel cake (PKC), fishmeal and periwinkle flesh, showed that 25% PKC fed along with either 2% fishmeal or 6% periwinkle flesh significantly (P<0.05) improved carcass traits while the experimental feeds had no significant effect on the abdominal fat pad level, but the birds had smaller heads and intestines.

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Olusakin, Adeniran, Akankpo Okon, Etuk Edet, Robert Williams, and Agbasi Ebuka. "Comparative study of electrical resistance of disc-shaped compacts fabricated using calcined clams shell, Periwinkle shell and Oyster shell nanopowder." Kragujevac Journal of Science, no. 44 (2022): 25–36. http://dx.doi.org/10.5937/kgjsci2244025a.

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In this investigation, Clam, Periwinkle and Oyster shells were separately treated, calcined and ball-milled into nano powder. Each nano powder material was fabricated into disc of various lengths in three replicates. In each case, the electrical characteristics of the discs were determined. Electrical resistivity values obtained for test samples developed from Clam, Periwinkle and Oyster shells were found to be (6.024 ± 0.009) x 105 Om, (6.823 ± 0.030) x 105 Om, and (4.916 ± 0.007) x 105 Om respectively at a temperature of (25.0 ± 1.0oC). Also, electronic activation energy values were found to

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Samiha.S, Ishanha Karan, and Renuka.V. "Development of Biodegradable Starch-Based Edible Films Enhanced with Periwinkle Extracts for Sustainable Food Packaging." International Research Journal on Advanced Engineering Hub (IRJAEH) 3, no. 04 (2025): 1797–803. https://doi.org/10.47392/irjaeh.2025.0260.

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The increasing demand for sustainable and biodegradable packaging materials has driven the development of edible films with antimicrobial properties. This study explores the potential of potato starch-based edible films incorporated with periwinkle (Catharanthus roseus) extract as a natural antimicrobial agent. The antimicrobial activity of the periwinkle extract was evaluated using the Agar Well Diffusion Method against Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus. The results indicated a concentration-dependent inhibitory effect, with the highest inhibition observed at

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Kulkarni, R. N., K. Baskaran, and Tripta Jhang. "Breeding medicinal plant, periwinkle [Catharanthus roseus(L) G. Don]: a review." Plant Genetic Resources 14, no. 4 (2016): 283–302. http://dx.doi.org/10.1017/s1479262116000150.

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AbstractPeriwinkle [Catharanthus roseus(L) G. Don] has become one of the very extensively investigated medicinal plants after the discovery of two powerful anti-cancer alkaloids, vinblastine and vincristine, in its leaves more than 50 years ago. These alkaloidal drugs are still in clinical use. Also, periwinkle is still the only source of these alkaloids and their precursors, catharanthine and vindoline. Low concentrations of these alkaloids in the plant and, therefore, high costs of their extraction have led to tremendous efforts towards understanding their biosynthesis and exploration of alt

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Glawe, Dean A., and Steven T. Koike. "Phytophthora alni subsp. uniformis Found in Alaska Beneath Thinleaf Alders." Plant Health Progress 9, no. 1 (2008): 37. http://dx.doi.org/10.1094/php-2008-1212-03-br.

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Periwinkle is a trailing, spreading evergreen plant used in landscapes as a groundcover. Beginning in 2005, a powdery mildew was observed on periwinkle in coastal (Monterey Co.) California. As reported herein, the causal agent was determined to be Golovinomyces orontii (Castagne) V.P. Heluta. This appears to be the first record of a powdery mildew species on Vinca spp. in North America. Accepted for publication 16 October 2008. Published 12 December 2008.

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Dokubo, A., and F. U. Igwe. "Assessment of Polycyclic Aromatic Hydrocarbons (PAHs) in Commonly Consumed Shellfish from Kula, Rivers State, Nigeria." Environmental Management and Sustainable Development 8, no. 3 (2019): 58. http://dx.doi.org/10.5296/emsd.v8i3.13511.

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Polycyclic Aromatic Hydrocarbons (PAHs) were assessed in shellfishes (whelk, oyster and periwinkle) from Kula, Rivers State, Nigeria. The PAHs determination was done using gas chromatography (GC) coupled with flame ionization detector (FID) (Hewlett Packard, Wilmington, DE, USA), powered with HP chemstation Rev. A09:01 (10206) software. Human health risk assessment models based on United States Environmental Protection Agency (USEPA) was used to characterize risks of PAHs exposure to non cancer (Hazard Index) while and excess cancer risk (ECR). From the results, Benzo [a] Anthrancene (BaA) had

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Llantén, Tomás, Sebastián Cabrera, Javiera Fuentes, et al. "First Report of a Psyllid Vector of ‘Candidatus Phytoplasma pruni’ (Strain 16SrIII-J)." Plants 14, no. 9 (2025): 1279. https://doi.org/10.3390/plants14091279.

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In Graneros, O’Higgins Region, Chile, the mallow psyllid (Russelliana solanicola Tuthill, 1959) from Malva nicaeensis L. was identified as a potential vector of ‘Candidatus Phytoplasma pruni’. Over an 8-month period, 2089 specimens of a species of Psylloidea, including immatures and adults, were captured. We only selected the adults used for transmission trials in Catharanthus roseus (L.) G. Don (periwinkle) plants. By nested PCR, using primer pairs for phytoplasma detection in 16S rRNA and IdpA genes, 7 out of 113 (6.2%) periwinkle plants used in transmission trials were found to be infected

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Baumgartner, Kendra, and Jeremy G. Warren. "Persistence of Xylella fastidiosa in Riparian Hosts Near Northern California Vineyards." Plant Disease 89, no. 10 (2005): 1097–102. http://dx.doi.org/10.1094/pd-89-1097.

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The spread of Pierce's disease (PD) from riparian hosts to grapevines in California's northcoastal grape-growing region is a function of the proportion of Graphocephala atropunctata (blue-green sharpshooters [BGSSs]) that acquire Xylella fastidiosa from infected plant tissue. Riparian hosts that do not maintain sufficient X. fastidiosa populations for acquisition may not be significant inoculum reservoirs. We examined X. fastidiosa populations in systemically infected riparian hosts (California blackberry, California grapevine, elderberry, Himalayan blackberry, periwinkle) at two coastal locat

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Abdulrahman, Sumaila, Saliu Seidu, and Akinlabi Oyetunji. "Effect of Vanadium and Austempering Parameters on the Microstructure and Mechanical Properties of Austempered Ductile Iron (ADI) for Tricycle Crankshaft Applications." World Journal of Materials Science and Technology 1, no. 1 (2024): 1–9. https://doi.org/10.11648/j.wjmst.20240101.11.

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This research focused on the excellent mechanical properties of austempered ductile iron (ADI) which have been harden to significantly increase its application in the production of automobile parts, and improve their performance. ADI has been produced in this work to replace forged steel crankshaft taking advantage of the significant savings in energy, and the resulting advancement of lightweight and durable material. The suitability of calcined periwinkle ash, as an alternative to ferrosilicon-magnesium, as a nodularizer in ductile iron treatment, was investigated. Varied compositions of calc

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Adah, Patrick Ushie, A. A. Nuhu, A. A. Salawu, A. B. Hassan, and P. A. Ubi. "CHARACTERIZATION OF PERIWINKLE SHELL ASH REINFORCED POLYMER COMPOSITE FOR AUTOMOTIVE APPLICATION." FUDMA JOURNAL OF SCIENCES 8, no. 1 (2024): 83–92. http://dx.doi.org/10.33003/fjs-2024-0801-2158.

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The Periwinkle shell (Tympanotonus fuscatus) is one of the most abundant wastes in the Calabar coastal region of Nigeria and needs to be put into proper use. The great need to shift attention towards waste materials with good mechanical properties to replace some materials used in the Automobile industries for Automobile products is paramount. This research focused on the Mechanical characterization of several composites developed from Periwinkle Shell Powder (PSP) as filler and four selected polymeric materials as the matrix. Recycled high-density polyethylene (rHDPE), Recycled linear low-den

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Egamana, S., and S. Sule. "OPTIMISATION OF COMPRESSIVE STRENGTH OF PERIWINKLE SHELL AGGREGATE CONCRETE." Nigerian Journal of Technology 36, no. 1 (2016): 32–38. http://dx.doi.org/10.4314/njt.v36i1.5.

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In this paper, a regression model is developed to predict and optimise the compressive strength of periwinkle shell aggregate concrete using Scheffe’s regression theory. The results obtained from the derived regression model agreed favourably with the experimental data. The model was tested for adequacy using a student t-test at 95% confidence level and was found to be adequate. A computer programme coded in basic language was used to select the mix ratios that optimized the compressive strength of periwinkle shell aggregate concrete. The optimum compressive strength was found to be 19.50N/mm2

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