Threshold Temperature and Degree-day Estimates for Development of Immature Southern Pine Coneworms (Lepidoptera: Pyralidae) at Constant and Fluctuating Temperatures

1987 ◽  
Vol 80 (1) ◽  
pp. 62-64 ◽  
Author(s):  
James L. Hanula ◽  
Gary L. Debarr ◽  
Wayne C. Berisford
Keyword(s):  
Threshold Temperature ◽  
Southern Pine ◽  
Degree Day ◽  
Lepidoptera Pyralidae ◽  
Fluctuating Temperatures

Verification and Generalization of a Degree-Day Model Predicting Pecan Nut Casebearer (Lepidoptera: Pyralidae) Activity1

1983 ◽  
Vol 12 (2) ◽  
pp. 487-489 ◽  
Author(s):  
Dennis R. Ring ◽  
Vernon R. Calcote ◽  
Marvin K. Harris
Keyword(s):  
Degree Day ◽  
Lepidoptera Pyralidae

scholarly journals Pengaruh Suhu terhadap Perkembangan Pradewasa Parasitoid Eriborus argenteopilosus Cameron (Hymenoptera: Ichneumonidae)

2012 ◽  
Vol 13 (3) ◽  
pp. 250
Author(s):  
Novri Nelly ◽  
Trimurti Habazar ◽  
Rahmat Syahni ◽  
Damayanti Buchori
Keyword(s):  
Survival Rate ◽  
Temperature Effect ◽  
Development Time ◽  
Degree Days ◽  
Degree Day ◽  
Adult Parasitoid ◽  
Different Temperatures ◽  
Lepidoptera Pyralidae

Temperature effect on development time of the preadult parasitoid Eriborus argenteopilosus Cameron(Hymenoptera: Ichneumonidae) were studied to know development time, degree days and survival rate.Crocidolomia pavonana (Fabricius)(Lepidoptera: Pyralidae) larvae was exposed to E. argenteopilosus female andreared at four different temperatures i.e 160C, 200C, 250C and 300C. Data were analyzed using anova and linearregression to calculate degree day. At 200C E. argenteopilosus showed the highest degree day and survival rate(18.67 %), while at 300C nothing adult parasitoid emergenced. Degree day to development time of parasitoid attemperature 200C i.e fase egg-adult: 300.05; egg-pupae 173.35; pupae-adult 171.

scholarly journals Impact of Constant Versus Fluctuating Temperatures on the Development and Life History Parameters of Aldrichina grahami (Diptera: Calliphoridae)

Insects ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 184 ◽  
Author(s):  
Wei Chen ◽  
Li Yang ◽  
Lipin Ren ◽  
Yanjie Shang ◽  
Shiwen Wang ◽  
...  
Keyword(s):  
Life History ◽  
Ambient Temperature ◽  
Developmental Rate ◽  
Threshold Temperature ◽  
Life History Parameters ◽  
Temperature Regimes ◽  
Cold Tolerant ◽  
Constant Versus ◽  
Forensic Tools ◽  
Fluctuating Temperatures

Necrophagous fly species are commonly used as forensic tools to estimate the minimum postmortem interval (PMImin). Many researchers raised necrophagous flies under constant temperature regimes to collect their developmental data. However, in most forensic cases, the ambient temperature fluctuates. In order to investigate a forensically important fly developmental mode (the Isomegalen diagram, Isomorphen diagram and Thermal summation models) and make comparisons of the developmental rate between constant temperatures and fluctuating temperatures, we used Aldrichina grahami (Diptera: Calliphoridae) to investigate the life history parameters at eight constant temperatures ranging from 8 to 36 °C. We also compared developmental rate of A. grahami in three groups of constant versus fluctuating temperatures: 8 °C vs. 6–12 °C, 12 °C vs. 10–16 °C, and 16 °C vs. 14–20 °C. Our data showed that A. grahami is cold tolerant with a mean (±SE) development threshold temperature (D0) of 3.41 ± 0.48 °C and a thermal summation constant (K) of 8125.2 ± 288.4-degree hours. The three groups subjected to fluctuating temperatures took longer to develop compared to those developing in constant temperatures when simulated in a model. These results not only provide detailed developmental data for the use of A. grahami in the estimation of the PMI, but also indicate that ambient temperature fluctuation must be taken into consideration for the use of all necrophagous fly species.

The influence of temperature on development, longevity, and fecundity in the Rutherglen bug, Nysius vinitor (Hemiptera : Lygaeidae)

1972 ◽  
Vol 20 (1) ◽  
pp. 67 ◽  
Author(s):  
M Kehat ◽  
M Wyndham
Keyword(s):  
Egg Laying ◽  
Population Increase ◽  
Threshold Temperature ◽  
Nymphal Development ◽  
Influence Of Temperature On ◽  
Males And Females ◽  
The Mean ◽  
The Difference ◽  
Fluctuating Temperatures ◽  
Significant Mortality

The mean duration of the egg stage of N. vinitor at constant temperatures ranged from 36.8 days at 15C to 3.8 days at 32C and that of the nymphs from 45 days at 20C to 12.0 days at 32C. Within the range 20-35C egg and nymphal mortalities were low; temperatures of 12 or 40C were lethal to both eggs and nymphs. Mean nymphal development times for males and females were similar. The threshold temperature for egg development was 14.5C and that for nymphs 15C; 70 and 225 day-degrees were required for completing egg and nymphal development respectively. The immature stages developed more rapidly at fluctuating temperatures out of doors than they did indoors at constant temperatures equal to the mean of the fluctuating temperatures. Within the range of screen temperatures 21.5-23.0C the difference between mean development in shade and in sun was 9-10 days. Age-specific fecundity and mortality schedules were determined for N. vinitor at constant temperatures. Temperature and longevity were inversely related and males survived longer than females. Thus at 22OC mean longevity of males was 115 days and of females 90 days, as compared with 31 and 18 days respectively at 30�C. After a maturation period that was longer at lower temperatures, daily egg-laying per female decreased with age from a maximum that occurred before there was significant mortality of females. The rates of the cumulative egg-laying increased with temperature from 22 to 35C. Mean total number of eggs per female was significantly higher at 25 and 30�C than at 22 or 35�C. However, life-table calculations revealed that a temperature of 35�C yielded the maximum rate of population increase. Within the range 22-35C, temperatures and rc values were linearly related. Unmated females laid significantly fewer eggs than those that had mated, but survived longer.

CONTACT TOXICITY OF 17 INSECTICIDES TO LARVAE OF DIORYCTRIA AMATELLA (LEPIDOPTERA: PYRALIDAE)

1980 ◽  
Vol 112 (5) ◽  
pp. 521-523 ◽  
Author(s):  
Gary L. DeBarr ◽  
Vicki H. Fedde
Keyword(s):  
United States ◽  
North American ◽  
Laboratory Tests ◽  
Insect Pests ◽  
Southern United States ◽  
Contact Toxicity ◽  
Southern Pine ◽  
Lepidoptera Pyralidae

Moths of the genus Dioryctria are important insect pests of North American conifers (Baker 1972). Of the species that occur in the southern United States, e.g., D. clarioralis (Walker), D. disclusa (Heinrich), and D. ebeli Mutuura and Munroe, the southern pine coneworm, Dioryctria amatella (Hulst), is the most destructive (Ebel et al. 1975). Our paper reports the results of laboratory tests aimed at determining the relative toxicities of commercially available or promising experimental insecticides to D. amatella larvae.

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