scholarly journals Biology of Raoiella indica Hirst. (Acari: Tenupalpidae) on Arecanut Leaves under Laboratory Conditions

2020 ◽  
Author(s):  
Indhusri Chavan ◽  
S. Pradeep ◽  
M. Manjunatha ◽  
H. Narayanaswamy ◽  
S. Sridhara
Keyword(s):  
Life Cycle ◽  
Incubation Period ◽  
Developmental Period ◽  
Larval Body ◽  
Unmated Female ◽  
Laboratory Conditions ◽  
Raoiella Indica ◽  
Mated Female

Biology of Raoiella indica Hirst was studied under laboratory at 27 ± 2°C temperature and 79 ± 5.75 percent RH. The finding showed that life cycle of R. indica consisted of five stages viz., eggs, larva, protonymph, deutonymph and adult. The eggs incubation period of R. indica was 9.790 ± 1.94 days. The larval body measured 0.09 and 0.13 mm in length and 0.08 to 0.10 mm in width and lived for 8.35 ± 0.84 days. The total developmental period of female was 29.80 ± 2.73 days and male took 31.27±40 days. Mated female lived for longer time and laid higher number of eggs than unmated female.

scholarly journals Biology of the Wild SilkmothAnaphe panda(Boisduval) in the Kakamega Forest of Western Kenya

2012 ◽  
Vol 2012 ◽  
pp. 1-7 ◽  
Author(s):  
N. Mbahin ◽  
S. K. Raina ◽  
E. N. Kioko ◽  
J. M. Mueke
Keyword(s):  
Life Cycle ◽  
Incubation Period ◽  
Rainy Season ◽  
Dry Season ◽  
Developmental Period ◽  
The Other ◽  
Western Kenya ◽  
Kakamega Forest ◽  
Pupal Period ◽  
Indigenous Forest

A study on the life cycle of the silkmothAnaphe panda(Boisduval) was conducted in two different habitats of the Kakamega Forest in western Kenya: Ikuywa, an indigenous forest, and Isecheno, a mixed indigenous forest. Eggs were laid in clusters, and the incubation period ranged from 40 to 45 days. Larvae fed onBridelia micrantha(Hochst) and passed through seven instars. The developmental period took between 83 to 86 days in the dry season and 112 to118 days in the rainy season. The pupal period ranged between 158 and 178 days in the rainy season and, on the other hand, between 107 and 138 days in the dry season. But the later caught up in development with those that formed earlier. Moths emerged from mid-October until mid-May. Longevity of adultAnaphe pandamoths took between 4 and 6 days, but generally females seemed to live longer than males. The moth also seems to have higher lifespan in the indigenous forest compared to the mixed indigenous forest.

scholarly journals Effect of Acetonic Extracts of Calotropis procera R Br.in (Ait.) on Reproductive Potential of Flat Grain Beetle Cryptolestes pusillus (Schon.) (Coleoptera: Cucujidae)

1970 ◽  
Vol 42 (2) ◽  
pp. 157-162 ◽  
Author(s):  
MM Rahman ◽  
W Islam
Keyword(s):  
Life Cycle ◽  
Incubation Period ◽  
Reproductive Potential ◽  
Adult Emergence ◽  
Developmental Period ◽  
Oviposition Rate ◽  
Calotropis Procera ◽  
Hatching Rate ◽  
Cryptolestes Pusillus

Acetonic extracts of Akanda was tested against different parameters of the life cycle of Cryptolestes pusillus. The lowest and highest oviposition rate (0.89±0.26 and 2.67±0.33 egg/female/day), hatching rate (14.67±0.53 % and 51.11±0.59 %), adult emergence (16.89 % and 40.89 %), and longevity (male 64.78±1.01day and 105.67±1.09 day) and female (69.56 ± 0.38 day and 113.22±0.57 day) were found in doses (552.413 and 163.678?gcm-2) whereas in control they were 4.89±0.35 egg/female/day, 91.22±1.02 %, 88.44 %, 156.11±1.37 day and 169.67±2.52 day respectively. But highest and lowest incubation period (7.33±0.33 day and 4.89±0.35 day) and developmental period (71.67±0.60 and 39.89±0.26 days) occurred in the same doses and in control these are 4.11±0.26 egg/female/day and 33.44±0.50days. Bangladesh J. Sci. Ind. Res. 42(2), 157-162, 2007

Observations on the biology of Lycts Brunneus (Steph.)

1953 ◽  
Vol 1 (1) ◽  
pp. 102 ◽  
Author(s):  
FJ Gay
Keyword(s):  
Heat Treatment ◽  
Life Cycle ◽  
Relative Humidity ◽  
Sex Ratio ◽  
Moisture Content ◽  
Incubation Period ◽  
Developmental Period ◽  
Wood Moisture Content ◽  
Optimal Conditions ◽  
Wood Moisture

An account is given of certain aspects of the biology of Lyctus brunneus (Steph.). Female beetles are able to oviposit within 24 hr. after emerging from infested timber and deposit an average of more than 70 eggs per female over a period of 1-2 weeks. Eggs are deposited at depths of 1.0-6.5 mm. in the wood vessels, preferentially from a transverse surface, but also through radial and tangential faces. The incubation period of the eggs ranges from about 1 week at 26�C, to 3 weeks at 15�C. The egg-adult developmental period ranges from 4 months at 26�C. to 16 months or more at 15�C. Under optimal conditions of temperature, relative humidity (and hence wood moisture content), and nutrition, the life cycle may be as short as 2 months. The sex ratio of L. brunneus is 1 : 1 and the adult beetles live from 2.5 to 7 weeks, depending upon the temperature, females being somewhat longer-lived than males. The larvae of L. brunneus are somewhat more resistant to heat treatment than are the eggs, but one 1/2hr. exposure to 50�C. is completely lethal to both stages.

scholarly journals The life cycle of MetaCutereba apicalis (Diptera: Cuterebidae)

1988 ◽  
Vol 83 (4) ◽  
pp. 485-491 ◽  
Author(s):  
Antonio Cesar Rios Leite ◽  
Paul Williams
Keyword(s):  
Life Cycle ◽  
Incubation Period ◽  
Natural Host ◽  
Larval Phase ◽  
Laboratory Conditions ◽  
White Rats

The development of Metacuterebra apicalis in laboratory conditions is described. The natural host, Oryzomys subflavus, and laboratory white rats were used as experimental hosts. The life cycle, from oviposition to the deaths of adults, was completed in about 73 days. The incubation period of eggs was about 10 days; the parasitic larval phase lasted 23 days in the natural host and 26 days in white rats; pupa lived for 32 days and adults survived for six days.

scholarly journals Biological traits and susceptibility of Delia antiqua (Meigen, 1826) (Diptera: Anthomyiidae) in onion

2019 ◽  
Vol 47 (2) ◽  
pp. 325-332
Author(s):  
Kamrun Nahar ◽  
Shanjida Sultana ◽  
Tangin Akter ◽  
Shefali Begum
Keyword(s):  
Life Cycle ◽  
Incubation Period ◽  
Larval Period ◽  
Oviposition Period ◽  
Biological Traits ◽  
Delia Antiqua ◽  
Unmated Female ◽  
Larval Instars ◽  
The Difference ◽  
Total Life

The pre-oviposition period of mated and unmated female reared on Bangladeshi and Indian onion was 4.5 ± 0.5, 4.37 ± 0.6 days and 4.11 ± 0.09, 4.45 ± 0.32 days, respectively. The oviposition period of mated and unmated female was 5.6 ± 0.6, 6.03 ± 0.6 days and 6.48 ± 0.39, 6.5 ± 0.34 days reared on Bangladeshi and Indian onion, respectively. The life cycle of Delia antiqua consisted of four definite stages: egg, larva, pupa and adult. The incubation period was1.38 ± 0.11 and 1.25 ± 0.05 days; larval period was 5.7 ± 0.7 and 5.4 ± 0.05 days; pupal period was 6.8 ± 0.2 and 6.08 ± 0.2 days, respectively. There were three larval instars in D. antiqua. To complete the total life cycle it required shorter period in Indian than in Bangladeshi onion. The total life cycle of female was 16.73 ± 0.89 and 15.29 ± 0.45 days, respectively on Bangladeshi and Indian onion. The difference between the life cycle of female was significant (p < 0.05) in Bangladeshi and Indian onion. Fecundity was higher in Indian than in Bangladeshi onion. The fecundity of female D. antiqua reared in Bangladeshi and Indian onion was 75.2 ± 4.09 and 89.2 ± 2.39, respectively and it was significantly (p < 0.05) varied. Female lived longer than male D. antiqua. It was more susceptible in Indian than Bangladeshi onion irrespective of the duration of life cycle and fecundity. Bangladesh J. Zool. 47(2): 325-332, 2019

scholarly journals Biology of Anar Butterfly: Deudorix (Virachola) isocrates Fabricius (Lepidoptera: Lycaenidae) in Mid Hill of Himachal Pradesh

2021 ◽  
pp. 43-47
Author(s):  
Himani Kaushal ◽  
Mahender Singh Thakur ◽  
Joginder Singh ◽  
Ramesh Lal
Keyword(s):  
Life Cycle ◽  
Insect Pests ◽  
Larval Period ◽  
Developmental Period ◽  
Research Station ◽  
Successful Management ◽  
Laboratory Conditions ◽  
Ocular Micrometer ◽  
Fruit Borer ◽  
Horticultural Research

Aim: The study on biology of fruit borer, Virachola isocrates Fabricius was carried out under laboratory conditions. Place and Duration of study: Study on the biology of V. isocrates was carried out under laboratory conditions in the Horticultural Research Station, Dr Y S Parmar University of Horticulture and Forestry, Seobagh Kullu in 2019. Methodology: In order to study life cycle, V. isocrates reared in the laboratory and measurements of different stages were regularly recorded with the help of ocular micrometer and stage  micrometer. Results: The average incubation period was recorded to be of 8.66 ± 2.05 days. The developmental period of first, second, third, fourth and fifth instar was 2.66 ± 0.46, 3.33 ± 0.46, 3.66 ± 0.46, 3.33 ± 0.46 and 3.33 ± 0.46 days, respectively. The total larval period was found to be of 15.33 ± 6.94 days. Pupal duration was found to be 15.33 ± 6.94 days. Total developmental period was completed within 40 ± 4.08 days through five larval instars on pomegranate. Conclusion: An up to date knowledge about the incidence pattern of major insect pests and their life cycle studies is a prerequisite for implementation of an effective and successful management tactics.

scholarly journals Biology of Red Palm Mite, Raoiella indica, on Different Coconut Varieties

2017 ◽  
Vol 21 (1) ◽  
pp. 23 ◽  
Author(s):  
Aulia Nusantara ◽  
Y. Andi Trisyono ◽  
Suputa Suputa ◽  
Edhi Martono
Keyword(s):  
Life Cycle ◽  
Development Time ◽  
Developmental Time ◽  
Immature Female ◽  
Immature Male ◽  
Laboratory Conditions ◽  
Red Palm Mite ◽  
Significant Difference ◽  
Raoiella Indica ◽  
Dwarf Variety

Red palm mite, Raoiella indica Hirst (Acari: Tenuipalpidae), has emerged as a new threat to coconut plantation in Indonesia. To control this mite, understanding on its biology is essential. The effects of three coconut varieties (Salak Dwarf, Local Sumenep Tall, and Hybrid coconuts) on the development and fecundity of R. indica were determined under laboratory conditions at 26−28oC, 80% RH, and photoperiod of 12:12 (L:D). The life cycle of R. indica consisted of the egg, larva, protonymph, deutonymph, and adult stages. Total development time of immature females was significantly influenced by coconut varieties. The shortest immature developmental time occurred at Salak Dwarf variety (26.07 days), whereas no significant difference of development time of immature female on Hybrid and Local Sumenep Tall varieties was found. Moreover, there was also no significant difference on the development time of immature male and on the fecundity of the mite among different coconut varieties. IntisariTungau merah kelapa, Raoiella indica Hirst (Acari: Tenuipalpidae), merupakan ancaman baru bagi perkebunan kelapa di Indonesia. Pemahaman mengenai biologi diperlukan untuk strategi pengendalian tungau tersebut di masa datang. Pengaruh tiga varietas kelapa yang berbeda (Genjah Salak, Lokal Sumenep, dan Hibrida) terhadap perkembangan dan keperidian R. indica diamati pada kondisi laboratorium dengan suhu 26−28oC, kelembapan nisbi 75−85%, serta pencahayaan 12 jam terang dan 12 jam gelap (L:D=12:12). Siklus hidup tungau terdiri dari telur, larva, protonimfa, deutonimfa, dan dewasa. Hasil pengujian menunjukkan bahwa waktu perkembangan betina pradewasa dipengaruhi secara nyata oleh varietas kelapa. Waktu perkembangan paling pendek terdapat pada kelapa Genjah Salak (26,07 hari), sedangkan waktu perkembangan betina pradewasa tidak berbeda nyata pada kelapa Hibrida dan Dalam Lokal Sumenep. Hasil lain pengujian menunjukkan tidak terdapat perbedaan nyata waktu perkembangan jantan pradewasa dan keperidian pada ketiga varietas.

scholarly journals Life cycle, survivorship and life expectancy of foliage spider (Marpissa bengalensis) in citrus orchard

2018 ◽  
Vol 48 (3) ◽  
Author(s):  
Muhammad Nawab ◽  
Mushtaq Hussain Lashari
Keyword(s):  
Life Cycle ◽  
Life Expectancy ◽  
Incubation Period ◽  
Developmental Stages ◽  
Adult Stage ◽  
Average Duration ◽  
Gravid Female ◽  
Citrus Orchard ◽  
Laboratory Conditions

ABSTRACT: The post embryonic developmental stages of Marpissa bengalensis (Araneae; Salticidac), the 2nd most abundant predatory species in citrus orchard were collected from the experimental fruit garden, department of Horticulture, located at the campus of University of Agriculture Faisalabad andstudied. Life cycle was observed in the laboratory, which started from egg sac collected from the field along with gravid female and released into the spider cages. The incubation period ranged from 5-15 days. The average eggs hatched were 23.8 eggs/cocoon and hatching % under laboratory conditions was recorded as 73.18%. The average duration of spiderlings span on their mothers back was 7 days. An overall, mean duration of 3rd spiderling stage was of 7.46 days. All spiderlings hatched from 8 cocoons. At the 4th spiderling stage, the average duration was of 10.23 days. In the 5th spiderling stage, the spiderling spent an average of 19.82 days. The 6th and 7th spiderlings stages lasted a total of 23.14 days and 25.86 days respectively. During 8th spiderling stage, the duration was maximum and it was recorded in 28.08 days. On average, from hatching to adult stage, the spiderlings lasted 137 days to attained maturity. Greater mortality was observed in the 3rd and 4th spiderling stages, decreasing thereafter and reaching zero in the 8th spiderling stage.

scholarly journals Biological aspects of Hylesia metapyrrha (Lepidoptera; Saturniidae; Hemileucinae), in laboratory

2007 ◽  
Vol 67 (1) ◽  
pp. 173-177 ◽  
Author(s):  
A. Specht ◽  
AC. Formentini ◽  
E. Corseuil
Keyword(s):  
Life Cycle ◽  
Incubation Period ◽  
Adult Stage ◽  
Immature Stages ◽  
Average Period ◽  
Development Stages ◽  
Behavioral Aspects ◽  
Biological Aspects ◽  
Guava Leaves

The aim of this work was to study biological aspects and the life cycle of Hylesia Metapyrrha in a laboratory. Laboratorial breeding was made at 25 ± 1 °C, 70 ± 10% UR and 14 hours of photophase, feeding the larvae with guava leaves (Psidium guayava L. - Myrtaceae). Time was evaluated on the days of all the development stages; morphometry was evaluated in millimeters and the pupa’s mass in grams. The eggs were disposed in groups and covered by urticating abdominal hair. The incubation period lasted 52 days. The larvae, with gregarious habits, presented background black coloration, yellowish scoli and two orange longitudinal lines above and below the spiracles, during the development which lasted an average period of 74.59 days and went through seven instars. The pre-pupa and the pupa stages lasted on average 8.82 and 50.56 days, respectively; the female pupae presented a duration, weight and size which was significantly bigger. The adult stage lasted on average 5.50 days with periods of pre, post and oviposition of 2.30, 1.90 and 1.00 days, respectively. This study broadens the knowledge of the immature stages, biological, morphological and behavioral aspects, until then restricted to the morphology and to registers of the occurrence of the adult forms.

The cattle lice of Great Britain Part I. Biology, with special reference to Haematopinus eurysternus

Parasitology ◽  
1941 ◽  
Vol 33 (3) ◽  
pp. 331-342 ◽  
Author(s):  
H. J. Craufurd-Benson
Keyword(s):  
Life Cycle ◽  
Great Britain ◽  
Special Reference ◽  
Incubation Period ◽  
Air Temperature ◽  
Average Length ◽  
Starvation Period ◽  
Complete Life Cycle ◽  
Threshold Of Development ◽  
Minimum Air Temperature

1. The geographical distribution of cattle lice in Britain is recorded in detail. Bovicola bovis is the commonest and most widely distributed species in Britain.2. The incubation period for the eggs was found to be: Haematopinus eurysternus, 9–19 days (av. 12); Bovicola bovis, 7–10 days (av. 8); Linognathus vitula, 10–13 days; Solenopotes capillatus, 10–13 days. With eggs of H. eurysternus it was found that the higher the minimum air temperature the shorter was the incubation period.3. In H. eurysternus the average length of the instars was: 1st, 4 days; 2nd, 4 days; 3rd, 4 days; pre-oviposition period, 3–4 days. The average time for the complete life cycle, egg to egg, was 28 days.4. The maximum longevity of H. eurysternus on the host was: males, 10 days; females, 16 days. No males or females of H. eurysternus survived a starvation period of 72 hr. at 20° C. and R.H. 70 or 0–10° C. and R.H. 70–85; but some nymphs survived this period at 20° C. and R.H. 70, but none survived 96 hr. starvation.5. The maximum number of eggs recorded for one female was 24; and eggs were laid at the rate of 1–4 a day.6. The threshold of development of the eggs of H. eurysternus appears to be about 27·5° C.

Sign in / Sign up

Export Citation Format

Share Document