Formulações de iscas de moluscicidas e seus efeitos sobre as alterações bioquímicas no ovoteste do caramujo Lymnaea acuminata (Mollusca;Gastropoda:Lymnaeidae)

The effect of sub-lethal feeding of bait formulations containing molluscicidal component of Ferula asafoetida (ferulic acid, umbelliferone), Syzygium aromaticum (eugenol) and Carum carvi (limonene) on biochemical changes in the ovotestis of snail Lymnaea acuminata were studied. Bait formulations feeding to L. acuminata were studied in clear glass aquaria having diameter of 30 cm. Baits were prepared from different binary combinations of attractant amino acid (valine, aspartic acid, lysine and alanine 10 mM) in 100 mL of 2% agar solution + sub-lethal (20% and 60% of 24h LC50) doses of different molluscicides (ferulic acid, umbelliferone, eugenol and limonene). These baits caused maximum significant reduction in free amino acid, protein, DNA, RNA levels i.e. 41.37, 23.56, 48.36 and 14.29% of control in the ovotestis of the snail, respectively. Discontinuation of feeding after treatment of 60% of 96h LC50 of molluscicide containing bait for next 72h caused a significant recovery in free amino acid, protein, DNA and RNA levels in the ovotestis of L. acuminata.Foi estudado o efeito subletal das iscas usadas para alimentação contendo componentes moluscicidas de Ferula asafoetida (ácido ferúlico, umbeliferone), Syzygium aromaticum (eugenol) e Carum carvi (limonene) nas alterações bioquímicas do ovoteste do caramujo Lymnaea acuminata. A formulação das iscas usadas para alimentar L. acuminata foi estudada em aquários de vidros transparentes de diâmetro de 30 cm. As iscas foram preparadas por combinações diferentes binárias de aminoácidos (valina, ácido aspártico, lisina e alanina 10 mM) em 100 mL de solução de agar a 2% + doses subletais (20% e 60% durante 24 horas LC50) de diferentes moluscicidas (ácido ferúlico, umbeliferone, eugenol e limonene). Estas iscas causaram redução significante máxima em aminoácidos livres, proteínas, níveis de DNA e RNA isto é 41,37%, 23,56%, 48,36% e 14,29% de controle no ovoteste do caramujo, respectivamente. Discontinuação da alimentação depois do tratamento de 60% de 96 horas de LC50 do moluscicida contendo a isca para as subsequentes 72 horas causou significante recuperação dos níveis de aminoácidos livres, proteína, DNA e RNA no ovoteste da L. acuminata

Role and Relevance of the Learners’ Errors in Second Language Acquisition

Language is an important phenomenon of socialisation process that helps to realise and experience the life and assists to convey emotions, feelings, ideas, etc. Language can be acquire or learn. Ellis (1985:292) writes, “Acquisition for Krashen, consists of the spontaneous process of rule internalization that results from natural language use, while ‘learning’ consists of conscious L2 knowledge through formal study.’’ The present study does not make any difference between acquisition and learning. Bothe terms are used synonym. Second Language Acquisition (hereafter, SLA) refers to the acquisition of any other language, after the acquisition of the mother tongue (hereafter, MT). The process of SLA, like that of first language acquisition, is very complex and involves many interrelated factors that affect the performance of learners. SLA is the acquisition of the other subsequent language structures only to express acquired content of the first language. Learners acquire a second language by making use of existing knowledge of the native language, general learning strategies, or universal properties of the language to internalize knowledge of the second language. These processes serve as a means by which a learner constructs an interlanguage (Selinker1974:31). It refers to a set of second language learners’ utterances that are not identical to the learners’ L1 and L2 in the process of the learners’ attempted meaningful performance in a second language. Such utterances are natural but considered as error. Error is a kind of psychological fallacy that occurs due to conscious or unconscious failure to distinguish between right and wrong judgement. Errors are not negative but progressive indicator for language learner. The present paper is an attempt to assess the role and relevance of errors in the acquisition of second language

An analysis of Errors In The Use of Modal And Auxiliary Verbs Made by the Learners of Class 10th in Gonda, Uttar Pradesh

Second Language (L2, hereafter) learning and teaching is an interesting field of research. During the past few decades, extensive researches have been conducted in this area in an effort to find out a universal model of language teaching and learning. In these substantial efforts, the learners’ errors are put under the great consideration. Learners’ errors are not the sign of inability of learners but are the evidences of learners’ strategies of second language learning

Indigenous plant Cannabis sativa: a comprehensive ethnobotanical and pharmacological review

Cannabis sativa (L.) is a plant indigenous to Central Asia and South-East Asia. It is widely used in ethnomedicines as an anti-inflammatory, antioxidant, analgesic, anticonvulsive, antidepressant, anticancer, antitumor, neuroprotective, anti-mutagenic, anti-allergic, and antibiotic. Numerous in vitro and in vivo investigations have already established these attributes of Cannabis. Numerous toxicological studies have demonstrated the dose-dependent toxicity of C. sativa against various pests. The exact identity of the phytoconstituents of C. sativa responsible for the observed biological effects and their mode of action at the molecular level is yet to be ascertained. This review provides a comprehensive update to the ethnomedicinal, phytochemistry, pharmacological activity, and toxicological profile of Cannabis sativa. DOI: http://dx.doi.org/10.5281/zenodo.811801

Tinospora cordifolia (GILOY): A MAGICAL SHRUB

Medicinal plants have been used as natural medicines, since prehistoric times because of the presence of natural chemical constituents. Among them Tinospora cordifolia has a wide array of bioactive principles as well as it has been proven medicinally important plant, have not received considerable scientific attention. The plant is commonly used as traditional ayurvedic medicine and has several therapeutic properties such as jaundice, rheumatism, urinary disorder, skin diseases, diabetes, anemia, inflammation, allergic condition, anti-periodic, radio protective properties, etc. A special focus has been made on its health benefits in treating endocrine and metabolic disorders and its potential as an immune booster. The stem of this plant is generally used to cure diabetes by regulating level of blood glucose. T. cordifolia is well known for its immunomodulatory        response. This property has been well documented by scientists. A large variety of compounds which are responsible for immunomodulatory and cytotoxic effects are 11-hydroxymuskatone, N-methyle-2-pyrrolidone, Nformylannonain, cordifolioside A, magnoflorine, tinocordioside and syringin. Root extract of this plant has been shown a decrease in the regular resistance against HIV. The active principles from T. cordifolia enhance host immune system by increasing immunoglobulin and blood leukocyte levels and by the stimulation of stem cell proliferation. Tinospora cordifolia has been used in indigenous systems of medicine, as indicated in various classical texts of Ayurvedic System of Medicine, viz. Charak, Sushrut and Ashtang Hridaya and other ancient treaties

Biological action of Piper nigrum - the king of spices

Piper nigrum - the king of spices is originated in the Western Ghats of India. It has gained a global consideration because of its volume in the spice industry. It contains major pungent alkaloid piperine which is known to possess many interesting pharmacological actions. Medicinally black pepper can be used digestive disorder like large intestine toxins, different gastric problems, diarrohea and indigestion and also can be used against respiratory disorder including cold fever, asthama. Piperine exhibits diverse pharmacological activities like antihypertensive, antiplatelets, antioxidant, antitumor, antipyretic, analgesic, anti-inflammatory, anti-diarrheal, antibacterial, antifungal, anti-reproductive, insecticidal activities. Piper nigrum also found to decrease lipid peroxidation in vivo. It has reported to possess antioxidant activity that might be due to the presence of flavonoids and phenolic contents

In vitro PHYTOTHERAPY OF VECTOR SNAILS BY BINARY COMBINATIONS OF LARVICIDAL ACTIVE COMPONENTS IN EFFECTIVE CONTROL OF FASCIOLIASIS

SUMMARY A food-borne trematode infection fascioliasis is one among common public health problems worldwide. It caused a great economic loss for the human race. Control of snail population below a certain threshold level is one of the important methods in the campaign to reduce the incidence of fascioliasis. The life cycle of the parasite can be interrupted by killing the snail or Fasciola larva redia and cercaria inside of the snail Lymnaea acuminata. In vitro toxicity of different binary combinations (1:1 ratio) of plant-derived larvicidal active components such as citral, ferulic acid, umbelliferone, azadirachtin and allicin against Fasciola redia and cercaria were tested. The mortality of larvae was observed at 2h, 4h, 6h and 8h of treatment. In in vitro condition azadirachtin + allicin (1:1 ratio) was highly toxic against redia and cercaria (8h LC50 0.006 and 0.005 mg/L). Toxicity of citral + ferulic acid was lowest against redia and cercaria larvae.RESUMO A infecção alimentar pelo trematóide da fasciolíase é uma dentre os mais comuns problemas de saúde pública mundiais, causando grande prejuízo econômico para a humanidade. Controle da população de caramujos abaixo de determinado nível é um dos métodos no campo mais importantes para a redução da incidência da fasciolíase. O ciclo de vida do parasita pode ser interrompido pela morte do caramujo ou da larva redia e cercária da Fasciola dentro da Lymnaea acuminata. Foi testada a toxicidade in vitro das diferentes combinações binárias (relação 1:1) entre os vários componentes larvicidas ativos da planta tais como citral, ácido ferúlico, umbeliferone, azadiractina, e alicina contra a Fasciola redia e a cercária. A mortalidade das larvas foi observada após duas, quatro, seis e oito horas de tratamento. A condição in vitro azadiractina + alicina (relação 1:1) foi altamente tóxica contra redia e cercária (8h LC50 0,006 e 0,005 mg/L). Toxicidade do citral + ácido ferúlico foi a mais baixa contra redia e larvas de cercária

Emamectin benzoate: Potential larvicide and antifeedant agent against cotton Boll worm Helicoverpa armigera (Lepidoptera: Noctuidae)

Helicoverpa armigera, a global polyphagous pest, attacks a wide variety of crops causing huge agricultural loss. Overuse of conventional insecticides for Helicoverpa control has made Helicoverpa resistant to insecticides leading to more severe attacks on crops diverting interest of researchers to explore alternate control agents. Present study investigates the cidal and antifeedant potential of Emamectin benzoate; a semi-synthetic avermectin derived from the soil actinomycetes, Streptomyces avermitilis; against early IV instars of H. armigera. Larvae were fed on the castor leaf discs (3.5 cm diameter) dipped in different concentrations of Emamectin benzoate; ranging from 0.05 µg/mL-1.5 µg/mL. The leaf disc areas were measured pre-and post-larval feeding to estimate the antifeedant potential of compound. The effect of feeding was also assessed on the survival of larvae by scoring the larval mortality till 96 h. Our investigations showed significant larvicidal potential of Emamectin benzoate against H. armigera revealing respective LC50 values of 0.26 µg/mL, 0.095 µg/mL, 0.043 µg/mL and 0.027 µg/mL after 24, 48, 72 and 96 h feeding. Furthermore, a remarkable decrease of 93.59% was observed in larval feeding potential indicating significant antifeedant efficacy of Emamectin benzoate. A strong correlation between antifeedant index and the Emamectin benzoate concentration resulted in 1.48-fold index reduction with a decrease in concentration. Our results demonstrated efficacy of Emamectin benzoate as an effectual larvicidal and antifeedant agent against H. armigera. Employing selective insecticide can tackle issues of pest resistance and pest resurgence after ascertaining in the fields as Helicoverpa control agent and negating impact on non-target organisms.&nbsp

Traditional, nutraceutical and pharmacological approaches of Tamarindus indica (Imli)

Plants have provided a source of inspiration of novel drug compounds, as plant derived medicines have made large contributions to human health and well-being. An estimate of 75-90% of rural population of the world still relies on herbs for their healthcare. Ayurveda, supposed to be the oldest medical system in the world, provides potential leads to find active and therapeutically useful compounds from plants. Epidemiological studies have consistently demonstrated that consumption of plant- derived foods rich in bioactive phytochemicals have a protective effect against different aliments related to human health.  Tamarindus indica is having numerous reported activities like antidiabetic, hypolipidemic, hepatoprotective, anti-ulcer, anti-inflammatory, analgesic, antivenom, antimicrobial, antihelmintic and molluscicidal properties. In spite of these medicinal values this plant is also consumed by rural people as vegetable. It also use as flavoring agent to impart flavor to various dishes and beverage. The present comprehensive review is therefore an effort to give detailed information about botanical description, phytochemical, traditional, nutraceutical and pharmacological approaches of Tamarindus indica. DOI: http://dx.doi.org/10.5281/zenodo.334488

MATHEMATICS OF COVID-19 IN INDIA AND THEIR POSSIBLE CONTROL BY Allium sativum (L.)

SARS-CoV-2 belongs to the betacoronavirus genus. Betacoronaviruses infect mammals, are zoonotic pathogens, and can cause severe respiratory disease in human being. Till date there are no drugs or vaccine to control the infection of this pandemic disease. The present comprehensive review is therefore an effort to give detailed information about Allium sativum (Garlic) against nCoronavirus. The ayurveda and other traditional system of medicine in India described garlic and other medicinal herbs are used against various epidemics time-to-time. Alternatively, a number of literature noted that compounds extracted from garlic and other group of alliums such as allicin, diallytrisulfide, azoene and quercetin exhibit antiviral activity