Top 10 insect pests of cotton in pakistan agriculture. Lygaeidae is difficult because of its close resemblance to other bugs of genus oxycarenus. Technical bulletin from cicr in 3 cotton ipm and its current status hyalipennis costa are potential late season pests in the rainfed tracts of central zone, but have. Surveys were conducted to explore the hibernating sites in the districts faisalabad, multan and bahawalpur. Dusky cotton bug oxycarenus laetus lygaeidae hemiptera 2. After the first moult the nymphs become reddish brown then become darker after each moult. Eggs are cigar shaped and whitish immediate to oviposition.
Molecular docking and enzymatic analysis of annonini. Mostly, dusky cotton bug hides into the cotton bolls and. Average per acre yield of a serious pest of cotton that caused not only weight cotton in pakistan is still low compared to other countries losses in cottonseed, but decreased germination and oil 4. A serious pest of cotton that has become established in the caribbean basin susan e. Cotton is a commercial crop that has deep significance in the economy of the farmers, textile industry and the country where it is grown.
Without knowing any adverse effect of dusky cotton. In pcr, mitochondrial cytochrome oxidase i coi gene based primers were used for identification of this pest collected from various cotton fields in punjab. Cotton stainer dysdercus suterellus herrickschaffer identification. Dusky cotton bug 0419201680 0412656612 0419201681 emdl. In order to assess its damage on cotton crop current study was undertaken under field condition at the research area of cotton research institute, multan. Molecular identification and characterization of dusky cotton bug dcb, oxycarenus hyalinipennis oxycarenidae. The structure of the target nd1 was modeled using the robetta server. If the inline pdf is not rendering correctly, you can download the pdf file here. Molecular identification and sequence analysis of dusky. Assessment of densitydependent feeding damage by the cotton. Stink bug bugs cow bug cow bug dusky cotton bug aphids leaf hoppers leaf hoppers 285. Seasonal population dynamics of dusky cotton bug oxycarenus spp. Dusky cotton bugs also live on other plants, such as okra. Pdf insecticide resistance and resistance management.
Resistance of dusky cotton bug, oxycarenus hyalinipennis. Bioinformatics approach using pass indicated annonini to have the highest phosphatase inhibition and toxic activity. Some aspects of host specificity in the indian dusky cotton bug, oxycarenus laetus kirby heteroptera. Cotton whitefly, green house white fly and red cot. Dusky cotton bug, oxycarenus laetus, 9783659712371, present study was designed to study the population dynamics of dusky cotton bug oxycarenus laetus kirby on selected genotypes bt121 and cim496 in relation to abiotic factors. The cotton seed bug is a pest of cotton and other members of the malvaceae plant family. Impact of dusky cotton bug oxycarenus laetus kirby journal of. Cotton ipm and its current status central institute for. Pdf biology of dusky cotton bug, oxycarenus laetus kirby. The population trend of the dusky cotton bug,oxycarenus laetus kirby is studied for two years, on three principal hosts namelyabutilon indicum, sida acuta andthespesia populnea in relation to climatic variation. Repellency of some insect growth regulators igrs against. Oxycarenus cruralis stal, 1856 oxycarenus leucopterus fieber, 1852 oxycarenus hyalinipennis, common name cotton seed bug, is a species of plant bug belonging to the family lygaeidae, subfamily oxycareninae. The major cotton insect pests among cotton growing zones in india with their damage symptoms and.
Dusky cotton bugs appear on cotton is when majority of bolls on the crop are open. Many reports are available from other countries on the pest complex of. Studies were conducted to see the seasonal population incidence of dusky cotton bug dcb, oxycarenus hyalinipennis costa at the nuclear institute for. Henry 1983 reported dusky cotton bug as a serious cotton pest in egypt, where it has caused weight loss. A number of generations throughout the year have been observed. Cotton, okra, hollyhock, and other malvaceous plants. Studies on the role of dusky cotton bug oxycarenus hyalinipennis on early stages of cotton and its possible effect on shedding of fruiting parts article pdf available january 2015 with 322 reads.
Biology of dusky cotton bug, oxycarenus laetus kirby hemiptera. It has become established in the caribbean basin baranowski and slater 2005, slater and baranowski 1994. The cotton seed bug, oxycarenus hyalinipennis costa, is a serious pest of cotton and other malvaceous plants. Short communication molecular identification and sequence. International journal of advanced multidisciplinary research. There are over 166 insects recorded as pests on cotton crop. Moreover, dusky cotton bug crushed during ginning process and stained the lint of cotton to pinkish color henry, 1983. The dusky cotton bug used to be a minor pest of cotton but its importance has grown in the last few years, as populations are becoming larger.
They say that its importance lies in the fact that large number of dusky bugs get crushed while. It lays cigar shaped, white eggs in clusters of 210 within the half opened bolls, on the bolls, flower or buds. Cotton ipm and its current status central institute. Dusky cotton bugs dcb are crushed during ginning process that stain valuable cotton lint and stained lint fetch low price. Sunflower lace wing bug cadmilos retiarius tingidae hemiptera 4. The cotton seed bug has been intercepted on numerous occasions on material from africa.
All bigeyed bugs found on cotton have distinctively broad heads, large conspicuous eyes and range in. Dusky cotton bug, oxycarenus hyalinipennis agriculture. Some aspects of host specificity in the indian dusky cotton. Dusky cotton bugs dcb are crushed during ginning process that stain. Materials and methods the experiment was conducted at the integrated pest. Bugs also appeared on bhendi fruit whenever they ripen and especially feed on.
Indian farmers cultivate cotton fibre from all the four gossypium sp. Cotton ipm and its current status hyalipennis costa are potential late season pests in the rainfed tracts of central zone, but have never deserved any control measures from farmers as their damage is qualitative. Maximum population of dusky cotton bug was observed per boll after opening of bolls and whole plant during end of november on bt121 and cim496cotton. Several species of bigeyed bugs are found in texas cotton. Dusky cotton bugs appear on cotton is when majority. Ak butterfly danais chrysippus nymphalidae lepidoptera 6. World academy of science, engineering and technology. Population density varies significantly over the months as shown from the analysis of variance thereby indicating that the population build up is favoured by certain climatic factors. Dusky cotton bug is most damaging insect for cotton crop as it can cause up to 40 percent loss in the yield a spokesman of the agriculture department said wednesday that dusky cotton bug, which reproduces five times a year, not only reduces cotton yield but also badly damages its quality.
Assessment of densitydependent feeding damage by the. The adult is a small flat bug, dusky brown in colour. Hemiptera was done through polymerase chain reaction and sequencing. Materials and methods an entomological survey on pest scouting of dusky cotton bug cotton field was conducted to evaluate monthwise comparison of spots of above and below economic injury. Studies on alternate hosts of dusky cotton bug, oxycarenus spp. It is commonly known as cotton stainer or seed cotton bug akin et al. Dusky cotton bug most damaging for cotton crop urdupoint. Polish journal of entomology polskie pismo entomologiczne.
Cotton crop is prone to damage by a number of pests. Dusky cotton bug 0419201680 0412656612 0419201681 e. Bioecology, loss estimation and management of dusky cotton bug, oxycarenus laetus kirby hemiptera. Hollyhock tinged bug urentius euonymus tingidae hemiptera 3. The adult cotton stainer is a true bug with piercing, sucking mouthparts. Its chief importance lies in the fact that the adults and nymphs get crushed at time of ginning, thus staining the lint and lowering the market value of cotton 1. Crop losses due to insect pests special issue indian j. This pest has a worldwide distribution, excluding most of north america. Identification of cotton seed bug a potentially invasive. International journal of advanced multidisciplinary. Pdf cotton growers are much concerned about the health of cotton, particularly in its earlystage. For this purpose, two transgenic cotton genotypes viz.
A preliminary attempt is being made to study the population dynamics of the dusky cotton bug in the field conditions in relation to 387. The dusky cotton bug is expected to gain the status of pest in pakistan because it has the status of a major pest of cotton, causing qualitative and quantitative losses to cotton in many areascountries. This is to ensure that we give you the best experience possible. Faisalabad, urdupoint pakistan point news 28th aug, 2019. Population dynamics of the dusky cotton bug bug hardly anything is known about other aspects of its ecology.
The identification of dusky cotton bug, oxycarenus hyalinipennis hemiptera. Kirby on seed germination, lint color and seed weight in cotton. Pdf studies on the role of dusky cotton bug oxycarenus. The objective of present research was to assess the toxicity and dose rates of some insect growth regulators igrs against target pest. Hemiptera, is polyphagous in nature and has become one of the severe sucking pests of cotton in pakistan. Alternate hosts of dusky cotton bug, oxycarenus laetus kirby. Red cotton bug appearance on cotton is after the commencement of the first open boll in the cotton fields. By introduction of transgenic cotton, dusky cotton bug dcb oxycarenus laetus kirby has attained the status of major pests of cotton. Castor hairy caterpillar euproctis lunata lymantriidae lepidoptera 5. Studies were conducted to see the seasonal population incidence of dusky cotton bug dcb, oxycarenus hyalinipennis.
Data revealed that the incidence of dcb started in the second week of september and reached to the peak level in the first week of october. Seasonal history of dusky cotton bug oxycarenus hyalinipennis. Transgenic cotton varieties provided resistance to a variety of insects pests. It is sometimes known as the egyptian cotton stainer, and is found in southern asia where it is a pest of cotton, okra and other crops. The cotton seed bug oxycarenus hyalinipennis is considered a tropical pest that is not native. Some aspects of host specificity in the indian dusky. Dusky cotton bug, oxycarenus laetus, 9783659712371. Seasonal population dynamics of dusky cotton bug oxycarenus. The dusky cotton bug, oxycarenus hyalinipennis costa lygaidae. The effect of nitenpyram resistance on the activities of detoxifying enzymes i. Dusky cotton bug, oxycarenus hyalinipennis costa, causes economic loss by sucking the moisture and oil contents from the leaves and seeds of cotton plants. The entomological society of india hyderabad branch.
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