Thermal requirements for the development of immature stages of Fannia canicularis (Linnaeus) (Diptera: Fanniidae)

2019 ◽  
Vol 297 ◽  
pp. 16-26 ◽  
Author(s):  
Andrzej Grzywacz
Keyword(s):  
Immature Stages ◽  
Thermal Requirements ◽  
Fannia Canicularis

Thermal requirements of immature stages of Chrysomya albiceps (Diptera: Calliphoridae) as a common forensically important fly

2021 ◽  
Author(s):  
Razieh Shabani Kordshouli ◽  
Andrzej Grzywacz ◽  
Kamran Akbarzadeh ◽  
Kamal Azam ◽  
AliMohammad AliMohammadi ◽  
...  
Keyword(s):  
Immature Stages ◽  
Chrysomya Albiceps ◽  
Thermal Requirements

EFFECTS OF TEMPERATURE ON DEVELOPMENTAL RATE OF THE IMMATURE STAGES OF CRIOCERIS ASPARAGI (COLEOPTERA: CHRYSOMELIDAE)

1978 ◽  
Vol 110 (1) ◽  
pp. 57-62 ◽  
Author(s):  
R.G. Taylor ◽  
D. G. Harcourt
Keyword(s):  
Developmental Rate ◽  
Immature Stages ◽  
Degree Days ◽  
Thermal Requirements ◽  
Three Generations ◽  
Survival And Development ◽  
Developmental Rates ◽  
Effects Of Temperature ◽  
Accumulated Degree Days

AbstractWhen the immature stages of Crioceris asparagi (L.) were reared at 10 constant temperatures, differential rates of survival and development were observed. The duration of all stages decreased with increase in temperature up to 32°C. The eggs tolerated a wider range of temperatures (8°–34°C) than larvae and pupae (10°–34°C). Developmental rates plotted against temperature did not deviate significantly from fitted curves of the form 1/y = K/1 + ea−bx. During three generations, accumulated degree-days above a base of 10° during development of C. asparagi in the field did not differ significantly from stage thermal requirements as calculated.

EFFECTS OF TEMPERATURE ON DEVELOPMENTAL RATE OF THE IMMATURE STAGES OF THE ALFALFA WEEVIL, HYPERA POSTICA (COLEOPTERA: CURCULIONIDAE)

1974 ◽  
Vol 106 (1) ◽  
pp. 93-100 ◽  
Author(s):  
J. C. Guppy ◽  
M. K. Mukerji
Keyword(s):  
Developmental Rate ◽  
Hatching Rate ◽  
Immature Stages ◽  
Optimum Temperature ◽  
Degree Days ◽  
Hypera Postica ◽  
Thermal Requirements ◽  
Developmental Rates ◽  
Effects Of Temperature ◽  
Accumulated Degree Days

AbstractWhen Hypera postica (Gyll.) was held at 11 constant temperatures, the hatching rate for eggs increased with rise in temperature from 8° to 20 °C and remained maximal to 32 °C. None hatched at 6 °C. Larvae survived at 10° to 35 °C with high mortality only at these limits. Pupae survived at all temperatures above 10 °C but at 35 °C half of the adults were deformed. Duration of all stages decreased with rise in temperature up to 32 °C. Developmental rates plotted against temperature did not deviate significantly from fitted curves of the form 1/y = K/(1 + ea−bx).The optimum temperature, based on maximal rates of development and survival, for eggs and young larvae was near 32 °C and for older larvae and pupae, 30 °C. Accumulated degree-days above a base of 10 °C during development of H. postica at two Ontario locations did not differ significantly from thermal requirements calculated.

scholarly journals Biology of Corythucha gossypii Fabricius, 1794 (Hemiptera: Tingidae) in Ricinus communis at different temperatures and thermal requirements

2019 ◽  
Vol 79 (2) ◽  
pp. 278-285
Author(s):  
S. R. Oliveira ◽  
C. A. D. Silva ◽  
T. S. Carvalho ◽  
L. A. A. Costa
Keyword(s):  
Survival Rate ◽  
Relative Humidity ◽  
Ricinus Communis ◽  
Adult Longevity ◽  
Immature Stages ◽  
Thermal Requirements ◽  
Development Period ◽  
Different Temperatures ◽  
Lower Temperature ◽  
Bean Leaves

Abstract We studied the biology of Corythucha gossypii in Ricinus communis under different temperatures in climatic chambers adjusted at 20, 23, 25, and 28 °C, 60 ± 10% relative humidity, and a 12-h photoperiod. The development period and viability of eggs, the development period and survival rate of nymphs, and egg-adult cycle of C. gossypii as well as the adult longevity and fecundity were estimated. The thermal requirements (K) and temperature-base (Tb) were estimated for each of the immature stages and for the eggs-adults period. The duration of the eggs and nymphs phases and the egg-adult cycle of the C. gossypii on castor bean leaves at 20-28 °C were 7.6-17 days, 10.2-27.5 days, and 16.9-44.5 days, respectively. The lower temperature inhibited the oviposition of C. gossypii, whereas the higher temperatures were most favorable for its development. The municipalities of the Bahia state of Brumado, Irecê, Itaberaba, Jacobina, and Senhor do Bonfim were estimated to have a high potential for the population growth of C. gossypii. However, a greater number of generations per year of C. gossypii were observed in the municipalities of Brumado and Itaberaba.

Culex (Culex) longitubus, A New Species of the Mimeticus Subgroup (Diptera: Culicidae) From Bhutan

2021 ◽  
Author(s):  
Pradya Somboon ◽  
Thanari Phanitchakun ◽  
Jassada Saingamsook ◽  
Rinzin Namgay ◽  
Ralph E Harbach
Keyword(s):  
Phylogenetic Analysis ◽  
New Species ◽  
Male Genitalia ◽  
Immature Stages ◽  
High Altitudes ◽  
Coi Sequences ◽  
Anal Papillae ◽  
A New Species

Abstract Culex longitubus Somboon, Namgay & Harbach is described as a new species of the Mimeticus Subgroup of the subgenus Culex. The larva is most similar to the larva of Cx. tianpingensis Chen from China, but is distinguished by the length of the siphon and the anal papillae, the form of the comb scales and pecten spines, and the development of setae 7-P, 13-T, 1-X, and 4-X. The adults have wing markings and male genitalia similar to those of species of the Mimeticus Complex. Phylogenetic analysis of COI sequences revealed that the new species is closely related to Cx. murrelli Lien of the Mimulus Complex. The immature stages of the new species were found in stagnant pools and marshes at high altitudes in several districts of Bhutan.

Establishing and Satisfying Thermal Requirements for Drilled Shaft Concrete Based on Durability Considerations

2021 ◽  
pp. 036119812199635
Author(s):  
Andrew Z. Boeckmann ◽  
Zakaria El-tayash ◽  
J. Erik Loehr
Keyword(s):  
Mechanical Response ◽  
Large Diameter ◽  
Thermal Cracking ◽  
Drilled Shafts ◽  
Maximum Temperature ◽  
Design Parameters ◽  
Mass Concrete ◽  
Temperature Differential ◽  
Thermal Requirements ◽  
Ettringite Formation

Some U.S. transportation agencies have recently applied mass concrete provisions to drilled shafts, imposing limits on maximum temperatures and maximum temperature differentials. On one hand, temperatures commonly observed in large-diameter drilled shafts have been observed to cause delayed ettringite formation (DEF) and thermal cracking in above-ground concrete elements. On the other, the reinforcement and confinement unique to drilled shafts should provide resistance to thermal cracking, and the provisions that have been applied are based on dated practices for above-ground concrete. This paper establishes a rational procedure for design of drilled shafts for durability requirements in response to hydration temperatures, which addresses both DEF and thermal cracking. DEF is addressed through maximum temperature differential limitations that are based on concrete mix design parameters. Thermal cracking is addressed through calculations that explicitly consider the thermo-mechanical response of concrete for predicted temperatures. Results from application of the procedure indicate consideration of DEF and thermal cracking potential for drilled shafts is prudent, but provisions that have been applied to date are overly restrictive in many circumstances, particularly the commonly adopted 35°F maximum temperature differential provision.

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