scholarly journals Biology and Morphometrics of Pulse Beetle, Callosobruchus chinensis (L.) on Chickpea

2020 ◽  
pp. 161-165
Author(s):  
K. Sathish ◽  
J. Jaba ◽  
B. P. Katlam ◽  
A. Vishal ◽  
S. P. Mishra ◽  
...  
Keyword(s):  
Life Cycle ◽  
Average Length ◽  
Adult Longevity ◽  
Callosobruchus Chinensis ◽  
Morphometric Measurements ◽  
Female Adult ◽  
Male And Female ◽  
Pulse Beetle ◽  
Chickpea Cultivar ◽  
Total Life

The biology and morphometrics of pulse beetle, Callosobruchus chinensis were studied on chickpea cultivar ICCV 2 under laboratory conditions at ICRISAT, Patancheru, Telangana, India during 2018-19 and 2019-2020. The experiments were carried out in the BOD incubator at temperature of 28 ± 2ºC and relative humidity of 65 to 70%. The life cycle of C. chinensis included four stages egg, grub, pupae and adult. The data revealed that eggs incubation period in 4-5 days, the grub stage consisted of four instars and its development ranged from 20-25 days, pupation lasted for 6-7 days, whereas, female adult longevity ranged from 9-12 days. The morphometric measurements revealed that the average length and breadth of eggs were 0.62 ± 0.03mm and 0.34 ± 0.02 mm respectively. The length and breadth (mm) of four grub instars G1, G2, G3 and G4  were 0.58 ± 0.02 and 0.30 ± 0.01, 1.53 ± 0.06 and 0.92 ± 0.04, 2.71 ± 0.10 and 1.47 ± 0.06, 3.59 ± 0.14 and 1.96 ± 0.08 respectively. The average length and breadth of pupa were 3.72 ± 0.12 mm, 2.15 ± 0.09 mm. Whereas, the length and breadth (mm) of  adult male and female bruchids were 3.87 ± 0.08, 2.07 ± 0.05 and 4.23 ± 0.14, 2.31 ± 0.07 respectively. The total life cycle of C. chinensis ranged from 33-42 days.

scholarly journals Study on the biology of groundnut bruchid, Caryedon serratus Olivier [Coleoptera: Bruchidae] on stored groundnut in Ganye area, Adamawa State, Nigeria

2020 ◽  
Vol 12 (3) ◽  
pp. 272-276
Author(s):  
C.S. Oaya
Keyword(s):  
Life Cycle ◽  
Larval Stage ◽  
Developmental Stages ◽  
Adult Stage ◽  
Pupal Stage ◽  
Male And Female ◽  
Incubation Stage ◽  
Caryedon Serratus ◽  
The Mean ◽  
Total Life

Abstract. Study on the biology of groundnut bruchid, Caryedon serratus Olivier was carried out in the Laboratory of the Department of Agricultural Technology, Adamawa State College of Agriculture, Ganye, Adamawa State from June to September, 2015. The sex of the bruchid (male and female) was assigned the sub-treatment while the period of development was the main treatment and was replicated three times. The work considered the pre-oviposition stage, incubation stage, larval stage, pupal stage, adult stage and the total life cycle of the bruchid (male and female). The experiment was carried out under Laboratory conditions at 30-35°C temperature and 70-90% relative humidity. After the experiment was established, weekly counting of the total number of eggs laid was carried out at intervals. The results showed that, the mean developmental stages in both female and male bruchids were: 6.50 and 6.00 days; 17.00 and 18.00 days; 13.50 and 13.50 days; 12.00 and 13.50 days; 48.00 and 50.00 days for incubation stage, larval stage, pupal stage, adult stage and total life cycle of the bruchids, respectively. Moreover, the mean pre-oviposition and oviposition stages in female adult bruchid were 1.50 and 5.50 days, respectively.

scholarly journals Feeding Propensity and Cannibalism of Micraspis Discolor (Fab.) to Different Prey Species (Aphis craccivora and Nilaparbata lugens) under Laboratory

2016 ◽  
Vol 9 (1) ◽  
pp. 81-85 ◽  
Author(s):  
MZ Islam ◽  
SA Labani ◽  
AB Khan
Keyword(s):  
Life Cycle ◽  
Sex Ratio ◽  
Prey Species ◽  
Larval Period ◽  
Oviposition Period ◽  
Male And Female ◽  
Average Longevity ◽  
Brown Plant Hopper ◽  
Micraspis Discolor ◽  
Total Life

Feeding propensity and cannibalism of Micraspis discolor (Fab.) to different prey species (bean aphids and brown plant hopper ) was studied in the laboratory of the Department of Entomology, Bangladesh Agricultural University, Mymensingh, during January, 2007 to April, 2007. It was found that the highest pre-oviposition period was to 5.6±0.54 days when BPH were used and this period was lowest, 4.6±0.54 days using bean aphid. The oviposition period was maximum 40.20±1.78 days using bean aphid and minimum 29.00± 2.00 days were found using BPH. Maximum number of eggs 216.00±16.58 was laid when fed on bean aphid. The hatching percent was highest 88.71% using bean aphid and hatching percent was lowest 85.34% when fed on BPH. Incubation period varied from 2.40±0.54 to 3.80±0.44 days using different foods. However, the larvae passed through four larval instars and highest larval period was 10.00 ± 0.70 when BPH were used as food and lowest was 8.40 days feeding on bean aphid. Pupal period was 3.00±0.00 & 3.80±0.44 days when bean aphid & BPH were supplied as food. The average longevity of female was 38.60±3.78 and 31.40±2.96 days and that of male was 32.00±2.91 & 26.00±0.91 days when feeding on bean aphid and BPH respectively. It was significant at 1% level. The sex ratio of male and female was found (0.78:1.00) using different foods and these were not significant at 1% level. By this experiment, It was observed that feeding propensity of Micraspis discolor to different prey species during the total life cycle was as follows: bean aphid > BPH. It was also found that M. discolor had cannibalistic behavior and this was significant at 1% level.J. Environ. Sci. & Natural Resources, 9(1): 81-85 2016

scholarly journals Biology of Zygogramma Bicolorata Pallister on Parthenium hysterophorus Linn. under Laboratory Conditions

2021 ◽  
Vol 19 (2) ◽  
pp. 1-8
Author(s):  
Ajaya Shree Ratna Bajracharya ◽  
Resham Bahadur Thapa ◽  
Gopal Bahadur K.C ◽  
Shree Baba Pradhan ◽  
Jagat Devi Ranjit
Keyword(s):  
Life Cycle ◽  
Average Length ◽  
Mass Rearing ◽  
Parthenium Hysterophorus ◽  
Adult Longevity ◽  
Zygogramma Bicolorata ◽  
Egg Hatchability ◽  
Augmentative Release ◽  
Management Approaches ◽  
Parthenium Weed

Parthenium hysterophorus Linn. is one of the most aggressive, invasive weeds threatening natural and agricultural ecosystems in the world including Nepal. Augmentative release of host-specific, leaf feeding beetle, Zygogramma bicolorata Pallister (Coleoptera: Chrysomelidae) is one of the sustainable management approaches of parthenium weed. Successful mass rearing program requires knowledge on biology of Z. bicolorata for augmentative release. Thus, life cycle and biology of Z. bicolorata were studied in lab at 26±2 °C temperature and 70±10% relative humidity at NARC, Lalitpur, Nepal during March to September, 2016. The average incubation, larval and pupal periods of the insect were 4.33, 12.20, and 11.00 days, respectively. A single female could lay 1,837 eggs in 58.80 days oviposition period with 73.01% egg hatchability. The insect completed its life cycle in 108.40 and 105.50 days with adult longevity of 91.90 and 75.00 days for females and males, respectively. The average length of egg, pupa, adult female and male was 1.19 mm, 5.90 mm, 6.58 mm and 5.32 mm and breadth 0.51 mm, 3.74 mm, 3.94 mm and 3.20 mm, respectively. The average lengths of the first, second, third and fourth instar larvae were found 1.30 mm, 3.02 mm, 4.96 mm and 8.08 mm and breadth of 0.44 mm, 1.13 mm, 2.02 mm and 3.16 mm, respectively. These findings will help in mass multiplication of Z. bicolorata for biological control of parthenium weed.

scholarly journals Life cycle and biology of Pityogenes scitus Blandford, 1893 (Coleoptera: Curculionidae: Scolytinae), a pest of Pinus wallichiana in Kashmir, India

2020 ◽  
Vol 66 (No. 8) ◽  
pp. 318-328
Author(s):  
Abdul Lateef Khanday ◽  
Abdul Ahad Buhroo
Keyword(s):  
Life Cycle ◽  
Larval Stage ◽  
Developmental Stages ◽  
Average Length ◽  
Significant Loss ◽  
Seasonal Distribution ◽  
Species Ranges ◽  
Host Trees ◽  
Pinus Wallichiana ◽  
Total Life

The bark beetle, Pityogenes scitus Blandford, 1893 (Coleoptera: Curculionidae: Scolytinae) is one of the main pests in Pinus wallichiana A.B. Jackson, 1938 (Pinaceae)  stands, and it has also been found on other Oriental Pinaceae species. This pest is aggressive and has caused significant loss of host trees, but little is known of its biology and ecology. Based on the field and laboratory observations, this study describes the detailed bioecology of P. scitus.  This beetle pest overwinters in larval stage on blue pine (P. wallichiana) trees in Kashmir. After emergence, the adults fly to suitable trees and undergo maturation feeding for 4–6 days. Reproduction is polygamous type. After mating, each of the females makes one gallery with an average length 2.30 (± 0.41 SD) cm. The female lays 26.53 (± 6.32 SD) eggs on an average. The eggs hatch in 5 to 10 days. The larvae have 5 instars and complete their development in 18 to 28 days constructing larval galleries 1.76 (± 0.25 SD) cm in length. The larvae pupate for 13-22 days and finally the adults emerge to attack new suitable trees. The adults live for 28–40 days and the total life-span of this species ranges from 66 to 92 days. The seasonal distribution of various developmental stages and the number of generations were also recorded (5 generations (the last a partial one) per year in Kashmir). In general, the life cycle of P. scitus is similar to those described for other Pityogenes Bedel, 1 888 species. 

The resistance to re-infection of cats repeatedly inoculated with infective larvae of Brugia pahangi

Parasitology ◽  
1983 ◽  
Vol 86 (1) ◽  
pp. 11-18 ◽  
Author(s):  
D. A. Denham ◽  
P. B. McGreevy ◽  
R. R. Suswillo ◽  
Rosemary Rogers
Keyword(s):  
Life Cycle ◽  
Adult Males ◽  
Female Adult ◽  
Brugia Pahangi ◽  
Male And Female ◽  
Infective Larvae ◽  
Repeated Infection ◽  
Life Cycle Stages ◽  
Considerable Resistance ◽  
Resistance To Infection

SUMMARYSeven microfilaraemic and five amicrofilaraemic cats which had been repeatedly infected with Brugia pahangi were challenged along with normal cats 28, 14 and 1 day before autopsy. The lymphatics of the amicrofilaraemic cats contained no female adult worms originating from the repeat infections and only two adult males (both from the same cat). Only 5·2 % of the worms in the control cats were recovered from the amicrofilaraemic cats. Most of the challenge worms were killed in the first 24 h. The microfilaraemic cats all contained fertile adult male and female worms derived from the repeated infection but in such low numbers as to indicate considerable resistance to infection. Compared to their controls 26·4% of the challenge worms were recovered. Analysis of the life-cycle stages recovered showed that in both groups there was attrition of all stages and that although a number of worms reached L5 these were all killed later in the amicrofilaraemic cats.

scholarly journals Biorational Management of Pulse Beetle (Callosobruchus chinensis L.) in Gram Seed

2020 ◽  
pp. 14-22
Author(s):  
Md. Al-Mehedi Hasan ◽  
Sonia Sultana ◽  
Keya Akter ◽  
Tasnia Ummul Wara ◽  
Mehedi Hasan ◽  
...  
Keyword(s):  
Weight Reduction ◽  
Direct Method ◽  
Adult Longevity ◽  
Callosobruchus Chinensis ◽  
Larval Duration ◽  
Neem Oil ◽  
Pupal Period ◽  
Pulse Beetle ◽  
Percent Mortality ◽  
Karanja Oil

The pulse beetle, Callosobruchus chinensis is one of the major pests in stored pulse causes 40-50% losses of pulses in storage. Experiments were conducted to study the efficacy of some selected biorational insecticides on percent mortality of beetle, percent weight loss of seeds, no. of eggs laid per female, percent hatchability, larval duration, pupal period and adult longevity of pulse beetle, Callosobruchus chinensis under laboratory condition. Among the different botanicals, neem oil (77%) was found the most effective showing 78% mortality of pulse beetle in direct method followed by Mahogany oil (69%) and karanja oil (62%). In case of indirect method, the highest percent mortality was recorded from karanja oil (37%) which was followed by Neem oil (33%) and Mahogany oil (33%). Among different microbial derivatives, Libsen was found most effective considering mortality followed by Suspend 5SG and Ambush 1.8EC. The highest percentage of weight reduction was observed in Karanja oil (15%) and the lowest (14%) was in Mahogany oil. The highest percentage of weight reduction was obtained from Ambush 1.8EC (16%) and the lowest percentage of weight reduction was obtained from Suspend 5SG (13%). No. of eggs laid per female was the highest in mahogany oil (24) and lowest in Libsen (19).  Percent of hatchability was highest in mahogany oil (21%) and lowest in Libsen (16%). Larval duration was the highest in mahogany oil (16 days) and the lowest was in Suspend 5SG(13days). Pupal period highest in neem oil (7 days) and the lowest was in (6 days). The highest adult longevity (22 days) from the seeds treated with karanja oil. The lowest adult longevity (18 days) from seeds treated with Libson. Thus, Karanja, Neem and Mahogany oil, Libsen, Ambush 1.8EC and Suspend 5SG were found effective against pulse beetle in storage. Therefore, these biorationals might be included in the development of IPM packages for the management of pulse beetle in the storage.

scholarly journals Studies on Biology and Morphometrics of Etiella zinckenella (Lepidoptera) on Lentil under Laboratory Conditions

2020 ◽  
pp. 54-61
Author(s):  
Gulshan Kumar ◽  
Surender Singh Yadav ◽  
Manisha . ◽  
Sindhu .
Keyword(s):  
Insect Pest ◽  
Management Strategies ◽  
Feeding Habit ◽  
Adult Longevity ◽  
Effective Management ◽  
Single Female ◽  
Egg Hatching ◽  
Male And Female ◽  
Laboratory Conditions ◽  
Total Life

Background: Etiella zinckenella (Treitschke), an important and destructive pest of lentils and peas owing to its feeding habit. Aim: The present study aims to investigate the biology and morphometrics of Etiella zinckenella (lepidoptera) on lentil under laboratory conditions. Study Design: Laboratory experiment carried out on biological parameters of Etiella zinckenella in the department of Entomology, CCSHAU and Hisar. Results: Study revealed that a single female could lay 46-65eggs (average 56.3 eggs) preferably singly on pods, flowers, calyx and leaves of lentil. Incubation period of the eggs varied from 5.18 to 5.38 days (average 5.24 days). After egg hatching, larvae passed through 5 larval instars. Total larval and pupal period was observed on an average 16.9 and 13.38 days, respectively. Adult longevity of male and female was found on an average 4.1 and 5.6 days respectively. Etiella zinckenella completed its total life cycle in 37-45 days.  Conclusion: Biology of an insect pest is a condition precedent to find out its management strategies. Hence, observation on nature and behaviour of each developmental stage of this pest can be further utilised in the effective management at its damaging stage under field conditions.

Effect of chemical seed protectants on quality parameters of red gram seed against. pulse beetle Callosobruchus chinensis L under ambient storage

ENTOMON ◽  
2018 ◽  
Vol 43 (4) ◽  
pp. 281-286
Author(s):  
Manish Kumar Yadav ◽  
R.B. Singh
Keyword(s):  
Quality Parameters ◽  
Ambient Condition ◽  
Callosobruchus Chinensis ◽  
Emamectin Benzoate ◽  
Ambient Storage ◽  
Pulse Beetle ◽  
Vigour Index

Among the insecticides tested as seed protectants against Callosobruchus chinensis under ambient condition for a period of nine months revealed that all seed protectants were significantly effective. Maximum germination was observed (86.67%) when seed treated with novaluron 10 EC @0.05ml/kg followed by emamectin benzoate 5 SG@40mg/kg (85.67 per cent). The vigour index was maximum in emamectin benzoate (1913.87) followed by novaluron.

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