Molecular mechanism underlying the entomotoxic effect of. It damages cotton crops either by feeding on the seeds and staining them through their excreta. Sexual conflicts signaled by coercive mating, female resistance, and precopulation fights illustrate the mating system. Pyrrhocoridae under laboratory conditions article pdf available in pakistan journal of agricultural sciences 503 september 20. The following is an archived discussion of the dyk nomination of the article below. Both the adult and nymph feed gregariously on the leaves and green bolls of cotton. This study analyses the role of body size and symmetry in the sexual selection and courtship behavior of dysdercus maurus distant. They are often confused with bugs in the family lygaeidae, but can be distinguished by the lack of ocelli on the head. Files are available under licenses specified on their description page. Kohno k, bui thi n 2004 effect of host plant species on the development of dysdercus cingulatus heteroptera. Red cotton bug tambde dhekun dysdercus cingulatus fab. Fresh plant free from infestation of pests and disease were selected for sample collection.
Insecticidal activity of piper tuberculatum extracts on the. General information about dysdercus cingulatus dysdci eppo global database. Dysdercus wikispecies wikispecies, free species directory. The male inserts the edeagus in the females genital cavity and dismounts the females dorsum, performing an 180o. Proteins and free amino acids in the blood in both sexes of the bug dysdercus cingulatus fluctuated during the first gonotrophic cycle which extended over 7 days. Body size, symmetry and courtship behavior of dysdercus. Insecticidal activity of piper tuberculatum extracts on. It is a serious pest of cotton crops, the adults and older nymphs feeding on the emerging bolls and the cotton seeds as they mature, transmitting cottonstaining fungi as they do so. Cingulate definition of cingulate by the free dictionary. Dysdercus is a widespread genus of true bugs in the family pyrrhocoridae, commonly referred to as cotton stainers or red cotton bugs. Nymphs are red coloured with black median dorsal spots on the intertergal membrane of 34, 45 and 56 abdominal segments. Aug, 2019 dysdercus cingulatus pdf published on august, 2019 by admin the biology of dysdercus cingulatus f.
Jun, 2019 cerbera odollam pdf cerbera odollam, is a tree that grows in the swamp and marshy areas of india and southern asia. Evolution of mimicry rings is reconstructed for the new world species of cotton. Nymphicidal and ovipositional efficacy of seaweed sargassum tenerrimum j. M vis a vis weather parameters supriya verma, masarrat haseeb, uzma manzoor department of plant protection, faculty of agricultural sciences. A revision of the genus dysdercus boisduval hemiptera.
You may do so in any reasonable manner, but not in any way. It is found damaging crops in pakistan, southeastern asia and various states of indiagujarat, uttar pradesh, bihar, madhya pradesh and tamil nadu. Here, the toxicological effects of tephrosia purpurea linn. The fungi survive in the infected bolls in the soil. The insects mainly help in the spread of the disease. Insects free fulltext molecular mechanism underlying.
Molecular mechanism underlying the entomotoxic effect of colocasia esculenta tuber agglutinin against dysdercus cingulatus. Dysdercus koenigii is a species of true bug in the family pyrrhocoridae, commonly known as red cotton stainer. Good descriptions of the plants with terse notes on their uses. Ageratum conyzoides was found to contain substances with antijuvenile hormone properties. The red cotton bug dysdercus cingulatus is a sap sucking hemipteran pest that causes considerable yield loss by feeding on the tender leaf and cotton seeds. Evolution of mimicry in the new world dysdercus hemiptera. The plant parts were washed thoroughly 23 times with water. Paper factor as an inhibitor of the metamorphosis of the. Identification and partial characterization of juvenile. It is a serious pest of cotton crops, the adults and older nymphs feeding on the emerging bolls and the cotton seeds as they mature, transmitting cotton staining fungi as they do so.
Bioefficacy of rhynocoris longifrons stal heteroptera. They can be readily distinguished from most other genera of pyrrhocoridae by the strong white markings at the junction of the head and. Dysdercus cingulatus is a species of true bug in the family pyrrhocoridae, commonly known as the red cotton stainer. Heavy rainfall during the square and boll formation stage, punctures caused by the insects, especially red cotton bug dysdercus cingulatus, close spacing and excessive nitrogen application. Dysdercus definition of dysdercus by the free dictionary. Dysdercus definition is a genus of longlegged slenderbodied usually brightly colored bugs family pyrrhocoridae that feed chiefly in the developing seed of cotton causing discoloration of the lint. However, the molecular basis behind such entomotoxicity of cea has not been addressed adequately. Identification and partial characterization of juvenile hormone esterase from cotton pest dysdercus cingulatus u gayathri elayidam and d muraleedharen department of zoology, university of kerala, kariavattom.
Introduction okra, abelmoschus esculentus is also known as lady finger, as herbaceous plant grown for its edible seeds. Pyrrhocoridae hemiptera lint stainers eggs are laid in moist soil or in crevices in the ground. Efficacy of fungal entomopathogens against red cotton stainer, dysdercus cingulatus fabricius hemiptera. Dysdercus cingulatus dysdcioverview eppo global database. Reduviidae is a generalist predator of many cotton insect pests. Efficacy of fungal entomopathogens against red cotton. Dysdercus cingulatus pdf the biology of dysdercus cingulatus f. May 07, 2019 effects of host plant species on the development of dysdercus cingulatus heteroptera. The hiding behaviour of this predator, which is one of the key factors of predation success, was. Faunistic papers or fieldbased studies of the natural history of the egyptian fauna should be directed to our sister journal, the egyptian journal of natural history. Change in free amino acids in the blood of adult insects is also poorly understood. Springer nature is making sarscov2 and covid19 research free. Did you know, unless there is consensus to reopen the discussion at this page.
Seasonal incidence of dysdercus cingulatus infesting okra abelmoschus esculentus. A revision of the new world species of dysdercus guerin meneville heteroptera, pyrrhocoridae. These fluctuations, which were more apparent in the female, were more or less parallel in both sexes. Cerbera odollam pdf cerbera odollam, is a tree that grows in the swamp and marshy areas of india and southern asia.
Consequently, the lint is stained with the crushed nymphs and deposited excreta, which negatively impacts its market value. Red cotton stainer is a serious pest of cotton crops. Effect of constant temperatures viz, 18 1, 21 1, 27 1, 30 1 and 33 1 c on egg and nymphal development of dysdercus cingulatus revealed that the development rate of egg and nymphs gradually increased with increase in temperature, while total development period decreased but started to increase again at 33 1 c. Extracts of it were used to treat eggs, finalinstar nymphs and newly emerged adult females of dysdercus flavidus sign. Using a cladistic analysis of 43 species including d. Dysdercus cingulatus, red cotton bug rcb, has also shown significant susceptibility to cea intoxication. This file is licensed under the creative commons attribution 3. Read ovarian development in juvenilised adult dysdercus cingulatus affected by some plant extracts, entomologia experimentalis et applicata on deepdyve, the largest online rental service for scholarly research with thousands of academic publications available at your fingertips. Egyptian journal of biology african journals online. The growth and development of dysdercus cingulatus was affected by the chloroform extract of sea weed caulerpa veravalensis at various concentrations 25, 50, 75 and 100. Dysdercus cingulatus, electroantennogram, gas chromatographymass spectrometer, okra volatile 1. Dysdercus synonyms, dysdercus pronunciation, dysdercus translation, english dictionary definition of dysdercus.
All structured data from the file and property namespaces is available under the creative commons cc0 license. Insects free fulltext molecular mechanism underlying the. Subsequent comments should be made on the appropriate discussion page such as this nominations talk page, the articles talk page or wikipedia talk. It is also called red cotton bugs or cotton stainers. Dysdercus a genus of slender longlegged bugs that feed on the developing seeds of cotton and stain it genus dysdercus arthropod genus a genus. Diseases of cotton plant diseases biology discussion.
Proteins and free amino acids in the blood in both sexes of the bug dysdercus cingulatus fluctuated during the first gonotrophic cycle which extended over 7 days 2. For this reason, the protein and free amino acid concentration in the blood of both sexes of the insect dysdercus cingulatus during the first 7 days of its adult life was followed. Antilochus coqueberti is misspelled, and its true spelling is a. Protein and free amino acid concentration in the blood and. Exploring the insecticidal potentiality of amorphophallus. In mauritius, several local plants are known to have insecticidal properties, while others contain chemical analogues of insect hormones. Effects of host plant species on the development of dysdercus cingulatus heteroptera. M vis a vis weather parameters supriya verma, masarrat haseeb, uzma manzoor department of plant protection, faculty of agricultural sciences aligarh muslim university, aligarh, u.
Colocasia esculenta tuber agglutinin cea, a mannose binding lectin, exhibits insecticidal efficacy against different hemipteran pests. Cytogenetic and nucleolar meiotic cycle analyses in. Determination of thermal constant and development threshold. Indian cotton stainer dysdercus cingulatus inaturalist. Feeding of this and other species of dysdercus on cotton bolls causes the boll to abort and shed pomeroy and golding, 1923 see economic impact. Annona montana annonaceae, were evaluated for theironcopelus fasciatus and dysdercus peruvianus 36. Follicular epithelium shows some intercellular spaces. Dysdercus definition of dysdercus by merriamwebster. Earias insulana pdf economic importance earias insulana is a major pest of cotton in the eastern mediterranean. Chromatographic purification, in gel and western analysis of amtl. However, the molecular basis behind such entomotoxicity of cea has not been. Identification and partial characterization of juvenile hormone esterase from cotton pest dysdercus cingulatus u gayathri elayidam and d muraleedharen department of zoology, university of kerala, kariavattom, thiruvanathapuram 695581, kerala, india received 22 may 2007. Seasonal incidence of dysdercus cingulatus infesting okra. Jul 06, 2019 earias insulana pdf economic importance earias insulana is a major pest of cotton in the eastern mediterranean.
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