170,430 research outputs found
Letter from C. Templeton Tuskaloosa, Alabama to Messrs Shephard and Sathe (?), and Company, Worcester, Massachusetts, February 28, 1858
No full textFirst report, occurrence, biology, ecology and control of fig psylla Homotoma indica (Hemiptera: Homotomidae) from Kolhapur region, India
No full textABSTRACT
Ficus carica Linnaeus is an important horticultural crop in India. Homotoma indica sp. n. (Homotomidae: Hemiptera) is reported and described for the first time from India as a new pest of Fig Ficus carica L. Its incidence was noticed from March to October on F. carica with overlapping generations. Its life cycle was completed within 85 days. Both nymphs and adults caused inverted saucer shape to leaves by sucking cell sap and affected the crop yield adversely. The pest was predated by Menochilus sexmaculatus, lace wing, anthocorid bug and mirid bug and controlled by spraying the crop with 0.03 % Malathion / Azadirachtin or 0.02% phosphamidon.
Key words: Ficus carica, Homotoma indica, occurrence, description, biology, ecology, control.
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Gencer, N. S., Coskuncu, K. S. and Kumral, N. A. The colonization preference and population trends of larval fig psylla Homotoma ficus L. (Hemiptera: Homotomidae). J. Pest. Sci., 80. 1-8 (2007).
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Sathe T. V. Recent trends in biological pest control. Astral Int. Pvt. Ltd. New Delhi Pp. 1-232 (2015).
Sathe T. V. and B. V. Jadhav. Indian pests aphids. Pp. 1-211. Daya publi. House, New Delhi (2008).
Sathe T. V., Anna Gophane and Nilam Shendage. Colour attractively and occurrence of some cell sap sucking pests on crop plants. Biolife, 3 (2), 540-546 (2015).
Sathe T. V., Jadhav, A. S. Desai, Nilam shendage, Chandani Kamble and A. D. Jadhav. Ecology, ethology and control of green stink bug Plautia affinis Dallas (Hemiptera: Pentatomidae on mulberry Morus alba L. Varieties V-1 and M-5 from Kolhapur. Biolife, 2 (4), 1332-1338 (2014).
Sathe, T. V. Vermiculture and Organic farming. Daya publi. House, New Delhi. Pp. - 1-124 (2004).
Sathe, T. V. A textbook of forest entomology. Daya publishing House, New Delhi Pp. 1-234 (2009).
Sathe, T. V. Pests of Ornamental plants. Daya publishing House, New Delhi Pp. 1-199 (2011).
Sathe, T. V. and Jyoti Oulkar. Insect pest management: An ecological approach. Daya Publishing House. New Delhi. Pp. 1- 234 (2013).
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Copper-Catalyzed Simultaneous Activation of C–H and N–H Bonds: Three-Component One-Pot Cascade Synthesis of Multisubstituted Imidazoles
No full textA copper-catalyzed expedient, practical, and straightforward approach for the one-pot three-component modular synthesis of multisubstituted imidazoles has been described by using arylacetic acids, N-arylbenzamidines, and nitroalkanes. The reaction involves simultaneous activation of C–H and N–H bonds of arylacetic acids and N-arylbenzamidines, respectively. The use of inexpensive copper sulfate as a catalyst, readily available starting materials, and Celite-free workup makes this protocol economically viable. Multisubstituted imidazoles were obtained in moderate to good yields with significant functional group tolerance and high regioselectivity
Tachinids as good biocontrol agents of agricultural pests
No full textABSTRACT
Tachinids (Diptera: Tachinidae) are good biocontrol agents of agricultural and other crop plants. They are broadly divided into macro egg laying and micro egg laying individuals. Macro egg laying tachinids deposited their eggs directly on the insect pest body while, micro egg laying tachinids laid on the host plants of insect pests. In both cases, after getting the entry into the host body, eggs hatched into maggots and maggots consumed internal tissues of the pest insects by killing them when they came out by breaking the body wall of pest stages like larvae and pupae. Mostly pest larvae have been found attacked by tachinids. The diversity of tachinids and their biocontrol potential is summarized in the paper.
KEY WORDS: Tachinids, diversity, biocontrol potential.
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Sathe, T. V., Bhoje, P. M. and Desai, A. S. Floral host plants of tachinid flies (Diptera: Tachinidae) from Kolhapur- 26 The Tachinid Times Issue 28, 2015 Kolhapur and Satara districts, India. Journal of Entomological Research, 38: 183–188 (2014a).
Sathe T. V., Anna Gophane and Nilam Shendage Colour attractivity and occurrence of some cell sap sucking pests on crop plants. ISSN (online): 2320-4257 biolife 3(2):540-546 (2015).
Sathe, T.V., Jadhav, B.V., Desai, A.S., Shendage, N., Kamble, C. and Jadhav, A.D. Ecology, ethology and control of green stink bug Plautia affinis Dallas (Hemiptera: Pentatomidae) on mulberry Morus alba L. varieties V-1 and M-5 from Kolhapur. Biolife 2: 1347–1353(2014).
Sathe, T. V., P. M. Bhoje, A. S. Desai and Nilam Shendage. Diversity of Tachinids from agroecosystems of Kolhapur district. Recent Trends in Biological pest control, 19, 132-135 (2014b).
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Stireman, John, O. III, O’ hara, J. E. and Wood, D. M. Tachinidae: Evolution, Behavior and Ecology. Ann. Rev. Entomol., 51: 525-555 (2006)
Study of the Effect of Epigenetic Control on Cell Fate through Diverse Mechanisms in Multiple Organisms
No full textEpigenetic factors are responsible for regulating cell fate in different model systems in diverse ways. In this study I present two epigenetic factors which play a role in the development of cell types.
CpG island DNA hypermethylation on gene promoters is a well studied epigenetic factor. It affects the gene expression either through direct gene inhibition or as a marker for a phenotype. Aberrant DNA methylation can act as initial transformation indicators, bio-markers or in some cases even drug targets for cancer cells.
In this dissertation I describe the discovery of a gene promoter, SCT (secretin) which is hypermethylated in more than 15 tumor types including Non-small Cell Lung Cancer and Squamous cell carcinoma. It is almost completely unmethylated in cancer matched normal tissue as well as ~1000 non-cancerous tissues across > 30 organ types. The lung cancer samples could thus be distinguished from the non-malignant tissues as their area under the curve,(AUC) is 0.98 for over 801 samples. This was found using statistical analysis of 450k methylation array data in The Cancer Genome Atlas (TCGA), GEO, ENCODE and other large public databases. After lab validation using quantitative Methylation Specific Polymerase Chain Reaction (qMSP), it was proved that SCT is a hallmark bio-marker for Non small Cell Lung and other malignant tumors, is infrequent in less aggressive malignant tumors (including lung carcinoids), and appears very early in tumorigenesis i.e., carcinoma in situ stage.
In early embryonic development transcription is largely quiescent and translation as well as the chromatin structure are controlled by epigenetic factors. In mammals, DNA and histone methylation act as major epigenetic regulators of embryo development. But in organisms lacking CpG island methylation and a limited set of histone modifications like C. Elegans, other factors like RNA interference and short non-coding RNAs play a major role.
Small non-coding RNAs like piRNA, miRNA and siRNA affect gene expression by binding to specific sites on their target mRNAs leading to their degradation. Computational analysis of Next Generation Sequencing data, shows how these small RNAs affect the degradation of specific maternal RNAs in Maternal to Zygotic transition (MZT) in C. elegans embryo development. This mechanism of epigenetic control is also seen in most of the animals like drosophila, mice and humans. I show how a specific piRNA 21ur-15753 in addition to the 26G endo siRNAs can trigger the production of small RNAs from a locus involved in somatic cell fate specification called very early transcript-5 or vet-5. These are responsible in degrading a specific set of RNAs inherited from the mother which contain a relatively higher proportion of the AU rich element pattern 'AUUUAU' responsible for RNA degradation
HYMENOPTEROUS BIOPESTICIDES AND THEIR PRELIMINARY BIOCONTROL POTENTIAL FROM WESTERN MAHARSHTRA INCLUDING GHATS
No full textABSTRACT
Hymenpterous parasitoids are biopesticides scattered in the environment which develop on pest insects and kill them. The use of pesticides leads tremendous pressure on various ecosystems causing pest resistance, secondary pest outbreak, pest resurgence, pollution, health hazards and destruction to ecocycles. Hence, biopesticides (parasitoids) play a very crucial role in pest control and keeping environment ecofriendly. A total of 96 hymenopterous parasitoids belonging to 6 prominent families namely, Ichneumonidae, Braconidae, Chalcidae, Eulophidae, Trichogrammatidae and Aphelinidae were recorded parasitizing and killing various insect pests both from plain and forest (Western Ghats) ecosystems. The family Braconidae was dominant over others by the number of individuals (39) parasitizing pest insects. Second dominant family was Ichneumonidae with 36 species followed by Eulophidae, Trichogrammatidae, Chalcidae and Aphelinidae by the numbers 7, 7, 6 and 1 respectively. The results also indicated that 84 species of parasitoids were common, 12 rare and parasitized and killed more than 40 species of insect pests.
Key words: Diversity, Hymenoptera, Biopesticides, Biological pest control
REFERENCES
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Sathe T. V. Recent trnds in biological pest control Daya Publ. House- Astral international Pvt. Ltd., New Delhi. Pp-1-204 (2014).
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Rearing technique for a wild silk worm Actias selene hubner (Lepidoptera: Saturniidae)
No full textABSTRACT
Actias selene Hubner (Lepidoptera: Saturniidae) is wild silk worm of India. It has durable silk. Therefore, its conservation and exploitation in silk industry is integral part of sericulture. However, silk production technology of A. selene is not developed so far. Hence, in the present paper preliminary rearing technique of A. selene is given. Cocoons were formed within 45 days. Cocoon weight, shell weight, shell length, shell width and shell thickness were 7.42 g, 0.93 g, 4.2 cm, 2.2 cm and 0.18 mm respectively, while shell ratio calculated was 12.53%. The rearing success of A. selene was 25% on Terminalia tomentosa W. & A. The mated females laid 105 eggs and produced 22 offspring’s with an average sex ratio (m: f) 1: 0.75.
Key words: Rearing technique, Actias selene, wild silkworm, India
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Sathe, T.V. Ecology, epidemiology and control of Sand flies from Kolhapur region, India. Int. Nat. J. Pharma & BioSci. 5(4) (B): 1032-1045 (2014).
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Tandem Protocol for the Synthesis of 3-Acyl Benzothiadiazine 1,1-Dioxides
No full textA metal-free and efficient tandem synthesis of 3-acyl 3,4-dihydro-2H-1,2,4-benzothiadiazine-1,1-dioxides and 3-acyl-2H-1,2,4-benzothiadiazine-1,1-dioxides has been developed via C−H functionalization of ethynylarenes and ethenylarenes followed by condensation with 2-aminobenzenesulfonamide. The reaction involves the formation of arylglyoxal as an intermediate from multiform substrates through Kornblum oxidation in the presence of iodine and DMSO. Use of simple and readily available starting materials, inexpensive reagent, broad substrate scope and a very simple operation are noteworthy features of this protocol. This method provides an easy access to pharmaceutically important 3-acyl-1,2,4-benzothiadiazine-1,1-dioxides in good yields
Going Beyond Counting First Authors in Author Co-citation Analysis
Get PDFThe present study examines one of the fundamental aspects of author co-citation analysis (ACA) - the way co-citation
counts are defined. Co-citation counting provides the data on which all subsequent statistical analyses and mappings
are based, and we compare ACA results based on two different types of co-citation counting - the traditional type that
only counts the first one among a cited work's authors on the one hand and a non-traditional type that takes into
account the first 5 authors of a cited work on the other hand. Results indicate that the picture produced through this non-traditional author co-citation counting contains more coherent author groups and is therefore considerably clearer. However, this picture represents fewer specialties in the research field being studied than that produced through the traditional first-author co-citation counting when the same number of top-ranked authors is selected and analyzed. Reasons for these effects are discussed
Colour attractivity and occurrence of some cell sap sucking pests on crop plants
No full textABSTRACT
The colour of plant parts, light and texture play an important role in attracting insect pests and further their utility in pest management. There is extreme need for pesticidal alterations in integrated pest management. Therefore, manipulation of colours in pest management is worthwhile ecofriendly strategy of pest control. Four sap sucking pests namely spiralling white fly Aleurodicus dispersus, mealy bug Coccidohystris insolita, aphid Aphis craccivora and a psyllid Heteropsylla cubana were tested under laboratory conditions (27±1ºC, 75-80% R. H., 12 hrs photoperiod) against 7 colours for their attractive preference. Above species showed maximum preference to yellow, red, red and yellow colours respectively. During the kharip and rabbi seasons the occurrence of above pests was studied with respect to colour of flowers. The sucking insect pests were more common on crop plant of yellow flowers.
Key words- Colour attractivity, sucking insect pests, crop plants, ecofriendly control.
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