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Ramesh Babu, S.
- Cotesia ruficrus (Haliday, 1834) (Hymenoptera: Braconidae) Emerging as a Common Natural Parasitoid of Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in Indian Maize Fields
Abstract Views :444 |
PDF Views:245
Authors
Affiliations
1 ICAR-National Bureau of Agricultural Insect Resources, H. A. Farm Post, Bellary Road, Hebbal, Bengaluru – 560024, Karnataka, IN
2 Agricultural Research Station, MPUAT, Borwat Farm, Banswara – 327001, Rajasthan, IN
1 ICAR-National Bureau of Agricultural Insect Resources, H. A. Farm Post, Bellary Road, Hebbal, Bengaluru – 560024, Karnataka, IN
2 Agricultural Research Station, MPUAT, Borwat Farm, Banswara – 327001, Rajasthan, IN
Source
Journal of Biological Control, Vol 33, No 3 (2019), Pagination: 193-196Abstract
Field surveys conducted during 2018-2019 in the maize fields infested with Spodoptera frugiperda (J. E. Smith) (Lepidoptera: Noctuidae) in Karnataka, Tamil Nadu, Rajasthan and Meghalaya revealed that Cotesia ruficrus (Haliday) (Hymenoptera: Braconidae) was the common gregarious larval parasitoid in the maize fields parasitizing S. frugiperda. This is the first report of C. ruficrus parasitizing S. frugiperda in India, earlier reports being from Trinidad and Tobago. The present study (using integrated approach) provides morphological and molecular identification details along with host data, cocoon characters and geographical distribution of C. ruficrus.
Keywords
Fall Army Worm, Larval Parasitoid.Full Text
References
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- Report of a Mermithid Nematode Infecting Amyna axis, Chrysodeixisspp. and Spodoptera Spp. from India
Abstract Views :280 |
PDF Views:116
Authors
Affiliations
1 Agriculture Research Station, Maharana Pratap University of Agriculture and Technology, Banswara - 327001, Rajasthan, IN
2 Division of Nematology, ICAR-Indian Agricultural Research Institute, PUSA Campus, New Delhi - 110012, IN
1 Agriculture Research Station, Maharana Pratap University of Agriculture and Technology, Banswara - 327001, Rajasthan, IN
2 Division of Nematology, ICAR-Indian Agricultural Research Institute, PUSA Campus, New Delhi - 110012, IN
Source
Journal of Biological Control, Vol 33, No 3 (2019), Pagination: 217-221Abstract
Amyna axis (Lepidoptera: Erebidae), Chrysodeixis spp. (C. acuta and C. eriosoma) and Spodoptera spp. (S. exigua and S. litura) (Lepidoptera: Noctuidae) are important polyphagous insect-pests of leguminous crops. A mermithid (Nematoda: Mermithidae) nematode was found parasitizing the larval stages of these insects in the western Indian state of Rajasthan. Morphological and molecular analysis suggests that the nematode might be a species of the genus Hexamermis. The average length of post-parasitic nematode juveniles was 15 cm, and the average greatest body width was 1.5 mm. The vulva was median (V% = 48) without vulval flap. Approximately 100-125 μm long caudal appendages were present on tail. The cross-section revealed the presence of six hypodermal chords at the mid body region, and stichosome was present. The 18S rDNA sequence showed 99% similarity to mermithid nematode. A phylogenetic analysis of 18S rDNA sequences of mermithids resulted in identification of a new clade “Lineage 3” which included representatives of Mermis sp., Isomermis sp., Limnomermis sp., and Pheromermis sp. This is the first report of natural mermithid parasitism of A. axis and Chrysodeixis spp. along with its molecular characterization.
Keywords
Amyna Axis, Chrysodeixis, Hexamermis, Mermithid, Soybean, SpodopteraFull Text
References
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- Ordering Of Food Through Online-An Empirical Study Among Young Adults
Abstract Views :215 |
PDF Views:0
Authors
S. Ramesh Babu
1,
R. Arthy
2
Affiliations
1 Department of Management Studies, Mepco Schlenk Engineering College, IN
2 Department of Information Technology, Kamaraj College of Engineering and Technology, IN
1 Department of Management Studies, Mepco Schlenk Engineering College, IN
2 Department of Information Technology, Kamaraj College of Engineering and Technology, IN
Source
ICTACT Journal on Management Studies, Vol 5, No 4 (2019), Pagination: 1089-1094Abstract
Todays’ consumers are widely using digital environment to get their required things like, cosmetics, electronic gadgets, entertainment, etc. Recently consumers started to order foods through online. This induces various service providers to move towards digital environment. There are plenty of service providers who provide services for online food ordering system and it is highly preferred by young adults whose population in India is more than other groups. So, the researcher tries to find out the preference of young adults towards online food ordering applications. The researcher identified 301 young adults in Madurai market by using convenience sampling method and structured questionnaire are used to gather data from the young adults. The gathered data are analysed by using various analysing tools like, bar chart, perceptual mapping, chi-square and regression. The finding shows that young adults are giving importance to website design and security while ordering food through online. The researcher also concludes that majority of the young adults in Madurai prefer Swiggy app to order their food.Keywords
Food Ordering App, Website Design, Perceptual Mapping, Young Adults, Security.
- Isolation and Characterization of Indigenous Nucleopolyhedrovirus Infecting Fall Armyworm, Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) in India
Abstract Views :234 |
PDF Views:80
Authors
G. Sivakumar
1,
M. Kannan
2,
S. Ramesh Babu
3,
M. Mohan
1,
M. Sampath Kumar
1,
P. Raveendran
1,
T. Venkatesan
1,
R. Rangeshwaran
1,
Chandish R. Ballal
1,
P. Ram Kumar
1
Affiliations
1 ICAR-National Bureau of Agricultural Insect Resources, Hebbal, Bengaluru 560 024, IN
2 Department of Plant Protection, Horticultural College and Research Institute, Periyakulam, Tamil Nadu Agricultural University, Coimbatore 641 003, IN
3 Agricultural Research Station, Borwat Farm, MPUAT, Banswara 327 001, IN
1 ICAR-National Bureau of Agricultural Insect Resources, Hebbal, Bengaluru 560 024, IN
2 Department of Plant Protection, Horticultural College and Research Institute, Periyakulam, Tamil Nadu Agricultural University, Coimbatore 641 003, IN
3 Agricultural Research Station, Borwat Farm, MPUAT, Banswara 327 001, IN
Source
Current Science, Vol 119, No 5 (2020), Pagination: 860-864Abstract
Fall armyworm (FAW), Spodoptera frugiperda (J.E. Smith) (Lepidoptera: Noctuidae) is an invasive insect pest of maize in India. Natural occurrence of nucleopolyhedrovirus (NPV) infection on S. frugiperda larvae was recorded in 2018 during surveys conducted in maize fields in Chikkaballapura district of Karnataka, and Coimbatore and Tirupattur districts of Tamil Nadu. A strain of S. frugiperda nucleopolyhedrovirus (SpfrNPV NBAIR1) infecting S. frugiperda was isolated from the diseased larvae; morphological and biological characteristics were studied. Electron microscopic studies showed tetrahedral-shaped SpfrNPV occlusion bodies (OBs) of size 1.64 μm. Dose–mortality bioassays revealed that first, second and third instar larvae were equally susceptible (LC50 3.71–5.02 OBs/mm2) to SpfrNPV infection. A PCR technique for detection of viral DNA in S. frugiperda NPV was developed by employing the polyhedrin gene (polh)-specific primers. The amplicon of 618 bp was amplified, sequenced and NCBI GenBank accession number was obtained (MT422725). Blast analysis revealed that SpfrNPV conserved polh gene sequence matched 100% with the reference GenBank sequence (J04333) from the NCBI database which confirmed the identity of the SpfrNPV.Keywords
Insect Pests, Maize, Nucleopolyhedrovirus, Spodoptera frugiperda.Full Text
- A Study on Travel Destination Decisions of College Students
Abstract Views :111 |
PDF Views:0
Authors
Affiliations
1 Department of Management Studies, Mepco Schlenk Engineering College., IN
2 Department of Business Administration, V.H.N. SenthikumaraNadar College, IN
3 Department of Information Technology, Kamaraj College of Engineering and Technology, IN
1 Department of Management Studies, Mepco Schlenk Engineering College., IN
2 Department of Business Administration, V.H.N. SenthikumaraNadar College, IN
3 Department of Information Technology, Kamaraj College of Engineering and Technology, IN
Source
ICTACT Journal on Management Studies, Vol 7, No 1 (2021), Pagination: 1371-1376Abstract
Travelling is the life blood that fascinates the lives of human beings. In particular, young adults are more attracted by many tourist places and they travel to visit those places. This study aims to explore how college students in the Virudhunagar District are deciding their travel destinations. The researcher considers the factors of theory of planned behaviour to explore the travel destination decisions of college students. Specifically, the study tries to find factors that influence the attitude of students towards the intention to visit a place. A questionnaire was framed by considering factors of the theory of planned behaviour model to analyse the travelling intentions of college students. The Multistage random sampling method was used to identify 300 respondents from two arts and science colleges and two engineering colleges in Virudhunagar District. Data were collected from the identified respondents using the survey method. The collected data were analysed using correlation and multiple regression methods. The results show that the attitude of the college students plays a major role in their intention to visit a place. The results also show that the students want to enjoy a lot in the tourism place; they expect good recreation facilities and fun activities to enjoy their tour.Keywords
Travel Destination, Attitude, Subjective Norms, Perceived Behavioural Control, IntentionReferences
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- Population Dynamics of Spodoptera exigua (F.) and S. litura (F.) in Soybean
Abstract Views :111 |
PDF Views:66
Authors
Affiliations
1 Department of Entomology, Rajasthan College of Agriculture, MPUAT, Udaipur 313001, Rajasthan, IN
1 Department of Entomology, Rajasthan College of Agriculture, MPUAT, Udaipur 313001, Rajasthan, IN
Source
Indian Journal of Entomology, Vol 84, No 4 (2022), Pagination: 819-823Abstract
This study on the population dynamics of Spodoptera exigua (F.) and S. litura (F.) in soybean was done with observations made from 10 days after germination of the crop for two years. The results revealed that these pests are more abundant from July to August- Spodoptera litura (F.) occurred from the first week of July with occurrence of adults increasing with the growing season, and ending with the maturity of the crop. Amongst the current, 1st lag and 2nd lag week weather parameters, the occurrence of adults of S. exigua revealed a significant positive correlation with minimum temperature (r=0.716), evening relative humidity- RH (r=0.535), sunshine (0.621) and wind speed (0.661). Maximum temperature and wind speed exhibited a significant negative correlation with incidence of males of S. litura whereas, morning and evening RH were positively correlated with the incidence at 1-lag and 2-lag weeks. The incidence of larvae of S. litura was significantly influenced by morning RH (r=0.783) in the 2-lag week. The regression equation indicated that an increase in 1 mm rainfall decreased the male moth catches of S. exigua; while, incidence of larva was significantly affected with increase in 1% of morning RH; and incidence of S. litura larvae was related with maximum temperature of 1oC.Keywords
Soybean, Spodoptera litura, S. exigua, forecasting, weather factors, population dynamics, pheromone trap, male catches, correlation, regressionFull Text
References
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