GET THE APP

On the Biology and Thermal Developmental Requirements of the Cotton Mealybug, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) in Egypt | Abstract

Der Pharma Chemica
Journal for Medicinal Chemistry, Pharmaceutical Chemistry, Pharmaceutical Sciences and Computational Chemistry

ISSN: 0975-413X
All submissions of the EM system will be redirected to Online Manuscript Submission System. Authors are requested to submit articles directly to Online Manuscript Submission Systemof respective journal.

Abstract

On the Biology and Thermal Developmental Requirements of the Cotton Mealybug, Phenacoccus solenopsis Tinsley (Hemiptera: Pseudococcidae) in Egypt

Author(s): Ibrahim Shehata

This study evaluated the thermal requirements for development of the cotton mealybug Phenacoccus solenopsis depending on different biological parameters on Okra leaves Abelmoschus esculentusat under two constant temperatures (20ºC and 30ºC). The effect of temperature on eggs was ineffective since it hatched shortly to 1st nymphal instars after deposition. While the tested temperature caused significant effects on nymphal durations, pupation rate (pre-male stage), females emergence %, pre-oviposition, longevity, post-oviposition periods and fecundity in females (egg deposition, ovisacs numbers and hatchability %). The thermal constant and developmental zero were calculated to be 7.29ºC and 79.9 DDs for eggs, 11.67ºC and 272.9 DDs for nymphal stages, 11.06ºC and 46.4 DDs for males and then 3.31ºC and 554.1 DDs for females, respectively. The duration of the life cycle was 65.6 ± 10.36 days at 20ºC; this was shortened to 35.51 ± 1.12 days at 30ºC. The thermal requirements to complete the insect development for one generation was 8.2ºC for the developmental zero and 774.1 DDs for the thermal constant. Based on the thermal requirements values, the average life cycle duration from January to December 2016 was 61.78 days and the number of annual generations was 7.143 when the average annual temperature was 23.29ºC.


PDF

Select your language of interest to view the total content in your interested language

30+ Million Readerbase
SCImago Journal & Country Rank
Google Scholar citation report
Citations : 15261

Der Pharma Chemica received 15261 citations as per Google Scholar report

Der Pharma Chemica peer review process verified at publons
Der Pharma Chemica- Journals on pharmaceutical chemistry