"11664","8","archive","3170",,,"disk0/00/01/16/64","2020-12-17 04:35:20","2020-12-17 04:35:20","2020-12-17 04:35:20","article",,,"show",,,,"","","","","","","","","","",,,,"Jaba","J","","","","","","","Jaba","J","","","","",,,,,"","",,,,,"","","ICRISAT (Patancheru)","India","Impact of Variegated Temperature, CO2 and Relative Humidity on Survival and Development of Beet Armyworm Spodoptera exigua(Hubner) under Controlled Growth Chamber","pub","F1","CRPS2","","public",,,"Spodoptera exigua , Temperature, CO2, Relative Humidity, Climate Change",,"This work was supported by the grants from the Department of Science &
Technology, Government of India. The authors thank Dr. HC Sharma for the
comments and suggestions in the early stage of the experiments and the entomology
staff for their committed involvement in timely supply of larvae and diet
preparation.","Climate change will have a noteworthy bearing on survival, development, and
population dynamics of insect pests. Therefore, we contemplated the survival
and development of beet army worm, Spodoptera exigua under different
temperatures, (15˚C, 25˚C, 35˚C, and 45˚C), CO2 (350, 550, 750 ppm) and
relative humidity (55%, 65%, 75% and 85%) regimes. Maximum larval and
pupal weights were recorded in insects reared at 25˚C. The growth of S. exigua
was faster at 35˚C (larval period 7.4 days and pupal period 4.5 days) than
at lower temperatures. At 15˚C, the larval period was extended for 61.4 days
and there was no adult emergence from the pupae till 90 days. The S. exigua
hatchling was absent at 45˚C. The larval survival ranged from 31.6% - 57.2%,
maximum survival was recorded at 25˚C, and minimum at 45˚C. The maximum
(84.27%) and minimum adult emergence were recorded in insects reared
at 25˚C and 35˚C respectively. Maximum fecundity (384.3 eggs/female) and
egg viability (51.97%) were recorded in insects reared at 25˚C. Larval and
pupal periods increased with an increase in CO2 concentration. The highest
pupal weights (128.6 mg/larva) were recorded at 550 ppm. The highest larval
survival (73.50%) was recorded at 550 ppm and minimum (37.00%) at 750
ppm CO2. Fecundity was the highest in insects reared at 550 ppm CO2 (657.4
eggs/female), and the lowest at 750 ppm. Maximum larval and pupal weights
were recorded in insects reared at 75% relative humidity (RH). The growth
rate of S. exigua was faster at 85% RH than at lower RH. The larval survival ranged between 40.0% - 58.5%. Maximum adult emergence (88.91%) was
recorded in insects reared at 75% RH and minimum at 85% RH. Maximum
fecundity (447.6 eggs/female) and the highest egg viability (72.95%) were
recorded in insects reared at 75% and 65% RH respectively. Elevated temperatures
and relative moistness will diminish the life cycle, while hoisted CO2
will drag the life expectancy. Therefore, there is a need for thorough assessment
of the impact of climatic factors on the population dynamics of insect
pests, crop losses, and sustainability of crop production.","2020-11","published",,"American Journal of Climate Change","09","04","Scientific Research Publishing",,"357-370",,,,,,"doi:10.4236/ajcc.2020.94022",,,,,"TRUE",,"2167-9495",,,,,,"","https://doi.org/10.4236/ajcc.2020.94022","https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=10.4236%2Fajcc.2020.94022&btnG=","pub",,"Department of Science and Technology-Climate change, Government of India","",,,,,,"",,,,,,,"",,,,,"",,,,,"","",,,,,"","",,,,,
"11664",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"Mishra","S P","","",,,,,"Mishra","S P","","",,,,,,,,,,,,,,,"Punjab Agricultural University, Ludhiana, Punjab",,,,"s2.8",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
"11664",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"Arora","N","","",,,,,,,,,,,,,,,,,,,,,,,"Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola, Maharashtra",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,
"11664",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,"Munghate","R","","",,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,