scholarly journals Threshold Temperature and Thermal Constants for Development of the Diamond-Back Moth, Plutella xylostella L., with Reference to Their Local Differences

1973 ◽  
Vol 17 (1) ◽  
pp. 19-24 ◽  
Author(s):  
Kenji UMEYA ◽  
Hideo YAMADA
Keyword(s):  
Plutella Xylostella ◽  
Threshold Temperature ◽  
Thermal Constants

scholarly journals The effect of temperature on the development and reproduction of Busseola fusca (Lepidoptera: Noctuidae)

2016 ◽  
Vol 107 (1) ◽  
pp. 39-48 ◽  
Author(s):  
J. Glatz ◽  
H. du Plessis ◽  
J. Van den Berg
Keyword(s):  
Larval Development ◽  
Busseola Fusca ◽  
Effect Of Temperature ◽  
Threshold Temperature ◽  
Single Male ◽  
Temperature Regimes ◽  
Threshold Temperatures ◽  
Thermal Constants ◽  
Lower Temperature ◽  
The Impact

AbstractThe effect of temperature on the reproduction and development of Busseola fusca was studied under laboratory conditions. Single male–female pairs were confined to oviposition chambers kept at 15, 20, 26 and 30 ± 1°C and a 14L:10D photoperiod. Data on reproduction parameters were captured daily. Oviposition occurred at all the mentioned temperatures but no fertility was recorded at 30°C. The total number of eggs laid per female moth was between 300 and 400 and the optimum temperature for oviposition and fertility was between 20 and 26°C. Larval development was studied at five different temperature regimes, i.e. 15, 18, 20, 26 and 30 ± 1°C and a 14L:10D photoperiod. The most favourable temperature as well as the upper threshold temperature for larval development was between 26 and 30°C. Total development period was 152.6–52.6 days, respectively, at 15°C, and 26–30°C. The thermal constants for B. fusca was 99.50, 536.48, 246.25 and 893.66°D and lower temperature thresholds were 10.36, 8.14, 8.99 and 8.84°C, for completion of the egg, larval, pupal and egg-to-adult stages, respectively. Results on the thermal constants and lower and upper threshold temperatures of B. fusca can be used to predict the impact of climate change on the distribution and population growth of this pest.

THERMAL CONSTANTS FOR PREIMAGINAL DEVELOPMENT OF THE PARASITOID CEPHALONOMIA STEPHANODERIS BETREM (HYMENOPTERA: BETHYLEDAE)

1992 ◽  
Vol 124 (5) ◽  
pp. 935-941 ◽  
Author(s):  
Francisco Infante ◽  
Juan H. Luis ◽  
Juan F. Barrera ◽  
Jaime Gomez ◽  
Alfredo Castillo
Keyword(s):  
Threshold Temperature ◽  
Hypothenemus Hampei ◽  
Degree Days ◽  
Developmental Threshold ◽  
Preimaginal Development ◽  
Thermal Constants ◽  
Lower Developmental Threshold ◽  
Cephalonomia Stephanoderis ◽  
The Relationship ◽  
Eggs And Larvae

AbstractThe relationship between temperature and rate of development is described for Cephalonomia stephanoderis Betrem, an imported ectoparasitoid of the coffee berry borer Hypothenemus hampei (Ferrari).For all stages, development rate increased linearly with temperature between 17 and 32°C. However, at 37°C both eggs and larvae died. When the parasitoid constructed a cocoon, the lower developmental threshold (t) varied from 11.8°C in the eggs to 14.2°C for pupae; when no cocoon was constructed, it varied from 11.8°C for the eggs to 14.3°C for pupae. The lower developmental threshold, from egg to adult, was 13.7°C (with cocoon) and 13.8°C (without cocoon). As these differences were small in relation to the standard errors of the estimates, they were not considered different. Because C. stephanoderis always constructs a cocoon under field conditions, the threshold temperature of 13.7°C seems to be the most suitable.Physiological time expressed in degree-days (DD) for the egg to adult cycle of C. stephanoderis is 252.7 ± 45.3 DD (α = 0.05) when a cocoon is constructed, and 242.5 ± 35.1 DD (α = 0.05) when pupation occurs without construction of a cocoon.

SEASONAL POPULATIONS OF THE DIAMONDBACK MOTH, PLUTELLA XYLOSTELLA (LEPIDOPTERA: PLUTELLIDAE) IN RELATION TO DAY-DEGREE ACCUMULATION

1981 ◽  
Vol 113 (2) ◽  
pp. 127-131 ◽  
Author(s):  
R. A. Butts ◽  
F. L. McEwen
Keyword(s):  
Life History ◽  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Threshold Temperature ◽  
Sticky Traps ◽  
Brussels Sprouts ◽  
Fifth Generation ◽  
History Of

AbstractThe life history of Plutella xylostella (L.) was studied in plantings of Brussels sprouts at Cambridge, Ontario in 1977 and 1978. Adults were monitored by using sticky traps constructed of bristol board; eggs, larvae, and pupae were monitored by sampling plants. In both years in the spring, some of the first eggs were found before adults were caught in the traps. The trap collections indicated four periods of adult flight each year. During the last period of flight in 1977 eggs were laid; however, the fifth generation was not completed. Day-degree analyses of the populations indicated that 293 day-degrees (C) above a threshold temperature (7.3°C) were required to complete one generation. Using day-degree accumulations it was possible to predict accurately the periods when various stages of the pest were dominant even though there was considerable overlap of various stages in the field.

Identification of Rynaxypyr resistant Plutella xylostella with RAPD-PCR

2011 ◽  
Vol 4 (6) ◽  
pp. 480-482
Author(s):  
Navid N Patel ◽  
◽  
Dr. K N Patel Dr. K N Patel ◽  
Vina Sagane
Keyword(s):  
Plutella Xylostella ◽  
Rapd Pcr

Partial purification of Glutathione-S-transferases in Plutella xylostella (L.) show imparting resistance against Flubendiamide

2012 ◽  
Vol 2 (9) ◽  
pp. 3-5
Author(s):  
Dipali B Borkar ◽  
◽  
Vishal L Bagde ◽  
S. S. Munje S. S. Munje ◽  
M.P. Moharil M.P. Moharil
Keyword(s):  
Plutella Xylostella ◽  
Partial Purification ◽  
Glutathione S Transferases

The The Effect of Level Farmers' Knowledge In Some Active Chemical Insecticides Resistance to Control Plutella Xylostella Scale Laboratory

1970 ◽  
Vol 2 (1) ◽  
pp. 22-32
Author(s):  
Rasiska Tarin
Keyword(s):  
Active Ingredient ◽  
Plutella Xylostella ◽  
Plant Diseases ◽  
Chemical Insecticide ◽  
Randomized Design ◽  
Active Chemical ◽  
Questionnaire Result ◽  
Completely Randomized Design ◽  
Time Required ◽  
Two Stages

Pengaruh Tingkat Pengetahuan Petani  Pada Resistensi Beberapa Bahan Aktif Insektisida Kimia Untuk Mengendalikan Ulat Plutella Xylostella Skala Laboratorium The Effect of Level Farmers' Knowledge In Some  Active Chemical Insecticides Resistance to Control Plutella Xylostella Scale Laboratory Catur Hermanto, Rasiska Tarigan dan Fatiani Manik Balai Penelitian Tanaman Sayuran – Badan Penelitian dan Pengembangan Pertanian Jln Tangkuban Perahu No 517, Lembang, Bandung Barat 40391; e-mail: [email protected]   ABSTRAK  Petani dan pestisida merupakan dua sisi  yang saling berkaitan dalam mengendalikan serangan hama penyakit tanaman dilapangan Penggunaan pestisida oleh petani semakin hari kian meningkat khususnya didataran tinggi, namun  peningkatan ini tidak diimbangi dengan pemahaman dalam menggunakan pestisida. Penelitian ini bertujuan untuk mengetahui  pengaruh tingkat pengetahuan dan resistensi insektisida yang digunakan petani kubis di kabupaten Karo. Penelitian dilaksanakan di laboratorium Kebun Percobaan Berastagi dengan ketinggian tempat 1.340 mdpl yang dilaksanakan dari bulan september sampai november 2015. Pelaksanaan dibagi 2(dua) tahap. Tahap Pertama mengumpulkan makalah melalui teknik diskusi kelompok petani dan pengencer dan wawancara menggunakan kuisioner. Total jumlah responden 10 orang per 4 kecamatana. Dari hasil kuisioner dipilih jenis insektisida yang sering digunakan petani untuk diuji kepekaan ulat plutella xylostella terhadap insektisida yang diuji pada skala dilaboratoium.  Empat perlakuan dengan masing-masing terdiri atas 9 taraf konsentrasi menggunakan rancangan acak lengkap dan diulang 3 kali. Hasil penelitian menunjukkan  petani kubis dikabupaten karo melakukan pencampuran fungi dan insektisida > 2jenis dengan frekwensi penyemprotan 2 x 1 minggum serta dosis yang digunakan tidak sesuai dengan KF yang dianjurkan. Nilai LC 50 insektisida kimia dari bahan aktif klorantranilipro, prefenofos, sipemetrin dan kloropinofos berturut-turut 1,87 ml, 1,5 ml, 1,5 ml dan 2 ml. Dan waktu Waktu yang dibutuhkan untuk mematikan 50 % plutella xylostella (LT 50) dari keempat insektisida kimia berbahan aktif klorantranilipro, prefenofos, sipemetrin dan Kloropinfos berturut-turut adalah  39.20, 19.43, 23.57 dan 30.15 jam Kata kunci : Pengetahuan, Resistensi, Insektisida Kimia, Plutella xylostella , Laboratorium ABSTRACT. The Farmers and pesticides are important aspects that  interrelated tocontroll pests in the field of plant diseases as well as opportunities occur resistensi. The use of pesticides by farmers is constantly increasing, especially in the highlands, but this increase is not offset by an understanding in the use of pesticides. The aimed of the research to find the knowledge and the use of insecticide resistance cabbage farmers in Karo District.   The research was conducted at the laboratory of Berastagi experimental farm with altitude of 1,340 meters above sea level implemented from the month of September to November 2015. The implementation of divided by 2 (two) stages. The first is to collect  issues by discussion technique of farmers group and diluent and interview using a questionnaire. Total number of respondents  is ten peoples each four districts. From the questionnaire result so the selected types of insecticides often used by famers for the testing of  sensitivity plutella xylostella to insecticides test at laboratory scale with four treatment. each consisting of 9 degree of concentration using a completely randomized design and repeated 3 times. each consisting of 9 degree of concentration using a completely randomized design and repeated 3 times. The results showed cabbage farmers in the county karo mixing fungi and insecticides> 2 types with spraying frequency of 2 x 1 week as well as the doses used did not correspond to the recommended KF. LC 50 value of the chemical insecticide active ingredient klorantranilipro, prefenofos, sipemetrin and kloropinofos successively 1.87 ml, 1.5 ml, 1.5 ml and 2 ml. Time and time required to shut down 50% of Plutella xylostella (LT 50) of the four chemical insecticide active ingredient klorantranilipro, prefenofos, sipemetrin and Kloropinfos are respectively 39.20, 19:43, 23:57 and 30.15 hours

Effects of rhizobacteria on the biology and behavior of Plutella xylostella (Lepidoptera: Plutellidae)

2017 ◽  
Vol 43 (2) ◽  
pp. 195
Author(s):  
Robson Thomaz Thuler ◽  
Fernando Henrique Iost Filho ◽  
Hamilton César De Oliveira Charlo ◽  
Sergio Antônio De Bortoli
Keyword(s):  
Plutella Xylostella ◽  
Diamondback Moth ◽  
Insect Behavior ◽  
Control Treatment ◽  
Pupal Weight ◽  
Larval Feeding ◽  
Direct Effects ◽  
Plant Feeding ◽  
Kluyvera Ascorbata ◽  
And Behavior

Plant induced resistance is a tool for integrated pest management, aimed at increasing plant defense against stress, which is compatible with other techniques. Rhizobacteria act in the plant through metabolic changes and may have direct effects on plant-feeding insects. The objective of this study was to determine the effects of cabbage plants inoculated with rhizobacteria on the biology and behavior of diamondback moth, Plutella xylostella (Lepidoptera: Plutellidae). Cabbage seeds inoculated with 12 rhizobacteria strains were sowed in polystyrene trays and later transplanted into the greenhouse. The cabbage plants with sufficient size to support stress were then infested with diamondback moth caterpillars. Later, healthy leaves suffering injuries were collected and taken to the laboratory to feed P. xylostella second instar caterpillars that were evaluated for larval and pupal viability and duration, pupal weight, and sex ratio. The reduction of leaf area was then calculated as a measure of the amount of larval feeding. Non-preference for feeding and oviposition assays were also performed, by comparing the control treatment and plants inoculated with different rhizobacterial strains. Plants inoculated with the strains EN4 of Kluyvera ascorbata and HPF14 of Bacillus thuringiensis negatively affected the biological characteristics of P. xylostella when such traits were evaluated together, without directly affecting the insect behavior.

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