Papers by Vipin Chaudhary
Research Publication, 2019
Mus booduga (Gray 1837) is a mesic rodent, recorded for the first time from the cold arid region ... more Mus booduga (Gray 1837) is a mesic rodent, recorded for the first time from the cold arid region of Leh-Ladakh, Jammu and Kashmir, India. The species was collected from crop fields and nearby areas from different altitudes ranging from 3187 to 3768 m above mean sea level. The paper describes the external measurements and diagnostic features of M. booduga collected from Leh-Ladakh region. Earlier records had shown its altitudinal distribution from 250 to 3695 m above mean sea level from Uttarakhand in the Himalayan region, however in the present study the mouse was collected up to an altitude of 3768 m which is the highest elevational record of this species for the Himalayan range.
Variability for Physiological Parameters and Field Resistance to Hada Beetle in Ashwagandha Germplasm
Variability for Physiological Parameters and Field Resistance to Hada Beetle in Ashwagandha Germplasm
DOAJ (DOAJ: Directory of Open Access Journals), Jun 1, 2010
Infestation pattern and extent of damage by rodent pests and their management in cumin crop using... more Infestation pattern and extent of damage by rodent pests and their management in cumin crop using secondgeneration anticoagulant rodenticides were studied at farmers' fields in Jodhpur district. Monthly trapping throughout the crop season revealed presence of four species, viz., Tatera indica (45.16%), Meriones hurrianae (29.03%), Gerbillus gleadowi and, an arboreal species, Funambulus pennanti (25.81%). Damage to cumin crop was almost on par at the vegetative growth stage and flowering stage, recording 11.00 and 13.50% reduction in plant stand, respectively. Efficacy of two anticoagulant rodenticides viz., difethiaone (0.0025%) and bromadiolone (0.005%) was evaluated by two census methods simultaneously, viz., live burrow count (LBC) and census baiting (CB). Two treatments of either of the anticoagulants, one at vegetative growth and another at flowering stage, resulted in >80% reduction in pest rodent population. Cost:benefit ratio obtained with bromadiolone (0.005%) baiting was 1:10.8. Thus, poison baiting with anticoagulant rodenticides may be practiced twice at (i) vegetative growth and (ii) flowering stage, for effective rodent management in cumin.
Breeding and Post Natal Development of the Short Tailed Mole Rat, Nesokia indica in Arid Zone
Indian Journal of Plant Protection, 2012
Studies on breeding aspects including post natal development of short tailed mole rat, Nesokia in... more Studies on breeding aspects including post natal development of short tailed mole rat, Nesokia indica inhabiting irrigated fields of arid region were undertaken in laboratory. The mole rats exhibited an average litter size of 4.33 and 2.85 for field collected pregnant females and laboratory bred females, respectively. Gestation period was estimated to be 22–24 days. Post natal development with respect to different body parts indicated maximum growth rate during first two months after birth. Length of hind foot stabilized by 12–13 th week, whereas ear and tail stabilized by 19–20th week after birth. Head body length continued to grow up to 21 to 29 weeks after birth. In general, males grew faster than females. Observations on development of pelage, incisors, parental care, cannibalism and lactation length of short tailed mole rats are reported.
Bio-efficacy of Second Generation Anticoagulant Rodenticides in Pearl Millet - Moong - Moth Bean Cropping System in Indian Arid Region
Indian Journal of Plant Protection, 2005
Field efficacy of three second generation anticoagulant rodenticides was evaluated in pearl mille... more Field efficacy of three second generation anticoagulant rodenticides was evaluated in pearl millet-moong-moth bean cropping system under arid ecosystem for the two crop seasons. The efficacy of all the three rodenticides was assessed by three methods viz., live burrow count, census baiting and trapping methods simultaneously before and at 4 and 14 days after treatnment. Control success after two weeks of treatment with (0.0025%) difethialone, (0.005%) bromadiolone and (0.005% brodifacoum was 85.1, 85.1 and 82.1% at vegetative growth stage and it was 87.5, 89.0 and 88.8% at maturity stage, respectively. Second treatment of respective anticoagulant rodenticides yielded higher control success due to mortality of residual pest population. No significant difference was observed between treatments, methods and blocks and all treatments proved equally efficacious in containing field rodents.
Crop Protection, 2016
Present day rodent management technology mostly relies on use of rodenticides, which is unsafe fo... more Present day rodent management technology mostly relies on use of rodenticides, which is unsafe for human beings and other non-targets. Denatonium benzoate (DB) is an intensely bitter and non-toxic substance which is detectable by humans at a concentration of 10 ppb. Denatonium benzoate added wax block formulation of bromadiolone (0.005%) (an anticoagulant rodenticide) was evaluated against commensal rodents (house rat, Rattus rattus and lesser bandicoot rat, Bandicota bengalensis), which are always found in the proximity of pets, domestic animals and human beings. Single day exposure to bromadiolone (0.005%) formulation with DB and without DB in no-choice tests yielded 100% mortality in both the test rodent species in 2e11 days. The amount of poison bait ingested by R. rattus and B. bengalensis for both the formulations did not differ significantly, ranging between 5.87-7.30 and 6.51 e6.71 g/100 g body weight, respectively. In choice tests in the presence of alternate plain food (broken wheat grain), consumption of both the formulations of bromadiolone (0.005%) (with and without DB) was similar to plain food at both the exposure periods (1 and 2 days), indicating a good acceptability of test rodenticide. However, mortality with a single day exposure to bromadiolone (0.005%) formulation with DB was 70% and without DB was 60e80% in both test rodent species within 3e14 days. With a two days exposure period, mortality was 100% in both the species of test rodents in 3e13 days. Single day choice test between the formulations revealed that intake of baits of both formulations by both the test rodents was similar i.e., in the range of 8.16e8.94 g/100 g b wt (bromadiolone with DB) and 8.20e9.5 g/ 100 g b wt (bromadiolone without DB) indicating that incorporation of a bittering agent (DB) with bromadiolone did not alter the consumption of poison in both the test species. In field trials the mean control success as assessed by census baiting and trapping methods with the application of bromadiolone (0.005%) with DB ranged between 54.0% (houses and shops) to 68.4% (poultry farms) and was 55.6% (houses and shops) to 68.4% (poultry farms) in treatments with bromadiolone (0.005%) without DB. It can be concluded that denatonium benzoate could be a best additive in rodenticidal formulations as the acceptability, palatability and toxicity in the laboratory and also its performance in field in managing the pest rodents were not altered.
Feeding Deterrence Effects of Defatted Jojoba (Simmondisa chinensis) Meal Against Indian Gerbil, Tatera indica (Hardwicke)
Proceedings of the National Academy of Sciences, India, Section B: biological sciences, Aug 26, 2015
In search for safe and eco-friendly management of rodent pests a number of phyto-chemicals have b... more In search for safe and eco-friendly management of rodent pests a number of phyto-chemicals have been evaluated as repellent, antifertility agent, antifeedant and toxicant etc. Protein rich residue of seed of Jojoba (Simmondisa chinensis) known as defatted jojoba meal is reported to possess marked suppressive effect on food intake in a variety of animal species. In present study the defatted jojoba meal at a concentration of 5, 10, 15, 20, 25 and 30 % in pearl millet bait (w/w basis) was evaluated for its anti-rodent properties against Tatera indica, a predominant rodent pest of Indian subcontinent. Under no-choice condition the bait consumption during treatment period of 7 days was significantly reduced (3.01 ± 0.40–4.76 ± 0.14 g/100 g bwt/day) in comparison to pre-treatment plain bait consumption (9.33 ± 0.73–10.37 ± 0.29 g/100 g bwt/day). At higher dosages 50 % gerbils died. Besides, weight reduction in the range of 10.63–16.67 % was also observed. In choice test mean consumption of treated food was also significantly reduced (0.64 ± 0.28–1.44 ± 0.20 g/100 g bwt/day) in comparison to plain bait (5.80 ± 0.18–8.80 ± 0.29 g/100 g bwt/day) during 7 days of treatment period. Jojoba treated pearl millet bait when offered with plain sorghum bait, after an exposure period of 5 days left an imprinting effect on Indian gerbil which led to aversion towards plain pearl millet bait for 10–11 days. The findings showed that jojoba defatted meal exert strong dose dependant deterrence in Indian gerbils and also induces condition aversion learning behavior in the gerbils.
Indian Journal of Plant Protection, 2012
The effect of temperature on the duration of larval, prepupal, and pupal development of the Europ... more The effect of temperature on the duration of larval, prepupal, and pupal development of the European leaf roller, Archips rosanus L. (Lepidoptera: Tortricidae) was studied at four constant temperatures (18, 22, 26, and 30°C) where Malus communis L. (apple, Stark Crimson) was used as food. Significant positive linear relationships were observed between development rate and temperature for all life stages. Minimum developmental threshold temperatures were estimated as 5.5-6.7°C for first stages, 5.8-5.7°C for second stages, 5.1-6.3°C for prepupae, and 8.1-6.3°C for pupae, male and female, respectively. Lower threshold of complete development of adult was estimated as 6.05°C (male) and 6.0°C (female). Median development values of degree-days (DD) for first stages, second stages, prepupae, pupae
Life History and Seasonal Incidence of Asparagus Beetle, Lema Downsei Baly on Asparagus Racemosus in India
Annals of Plant Protection Sciences, 2012
Both the adults and grubs of Lema downesi were found damaging the tender spears or shoots and ten... more Both the adults and grubs of Lema downesi were found damaging the tender spears or shoots and tender foliage and pest was active throughout the year. The pest completed its life cycle in 11.93±0.07 days, laid an average of 106.6 ± 35.0 eggs on the spear under confinement and hatched in 2 to 3 days. The grubs developed through four instars in 4.3± 0.5 days ranging from 4 to 5 days. The pupae were exarate and lasted for 5 to 6 days. The adults were metallic light brown in colour with irregular brownish spots on elytra. The length and width of the body of male and female beetles were 4.7±0.16 and 2.09±0.07 mm and 5.0±0.08 and 2.37±0.1mm, respectively. The correlation co-efficient analysis between pest population and weather factors revealed that temperature was having negative correlation with grub and adult population; however relative humidity and rainfall were having positive correlation with pest population. Though the impact of these climatic factors on the pest population was non-significant, yet their effects on growth of host indirectly influenced the pest population.
Bio-efficacy of Second Generation Anticoagulant Rodenticides in Pearl Millet - Moong - Moth Bean Cropping System in Indian Arid Region
Indian Journal of Plant Protection, 2005
Field efficacy of three second generation anticoagulant rodenticides was evaluated in pearl mille... more Field efficacy of three second generation anticoagulant rodenticides was evaluated in pearl millet-moong-moth bean cropping system under arid ecosystem for the two crop seasons. The efficacy of all the three rodenticides was assessed by three methods viz., live burrow count, census baiting and trapping methods simultaneously before and at 4 and 14 days after treatnment. Control success after two weeks of treatment with (0.0025%) difethialone, (0.005%) bromadiolone and (0.005% brodifacoum was 85.1, 85.1 and 82.1% at vegetative growth stage and it was 87.5, 89.0 and 88.8% at maturity stage, respectively. Second treatment of respective anticoagulant rodenticides yielded higher control success due to mortality of residual pest population. No significant difference was observed between treatments, methods and blocks and all treatments proved equally efficacious in containing field rodents.
Incidence of Lema downsei Baly (Coleoptera: Chrysomelidae) on Asparagus racemosus
Entomon, 2009
Pest Management in Horticultural Ecosystems, 2011
Spotted beetle, Henosepilachna vigintioctopunctata (F.) (Coleoptera: Coccinellidae) is one of the... more Spotted beetle, Henosepilachna vigintioctopunctata (F.) (Coleoptera: Coccinellidae) is one of the major pest of ashwagandha in charotur region of Gujarat. Its seasonal incidence in cultivated ashwagandha during 2008-09 & 2009-10 along with biology was studied. Spotted beetle was active from last week of September to mid of December with a peak population of grubs (7.8 nos/plant) and adults (1.73 nos/plant) in 2 nd week of October (41 SMW) during both the years of observation. Population of spotted beetle showed significant positive correlation with atmospheric temperature (Maximum, Minimum & Mean), however, relative humidity had no effect on development of various stages of the pest beetle. The pest completed its life cycle in 20.08+0.24 days on ashwagandha after passing through four larval instars. The longevity of male and female adults of the pest was 67.79+3.96 and 67.20+3.85 days, respectively. The gravid females laid 562.54+76.16 eggs in several batches during the ovipositional period of 45.67+5.19 days.
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Papers by Vipin Chaudhary