Life Table Analysis for Immatures and Female Adults of the Predatory Beetle, Delphastus catalinae, Feeding on Whiteflies Under Three Constant Temperatures

Immature development and reproductive life history of Delphastus catalinae (Horn) (Coleoptera: Coccinellidae) feeding on Bemisia tabaci biotype B (Gennadius) (Homoptera: Aleyrodidae) (= B. argentifolii Bellows and Perring) immatures was studied at three constant temperatures: 22, 26 and 30 °C. Lower...

Full description

Saved in:
Bibliographic Details
Published in:Journal of insect science (Tucson, Ariz.) Ariz.), 2008, Vol.8 (7), p.1-9
Main Authors: Crisostomo Legaspi, Jesusa, Legaspi, Benjamin C., Simmons, Alvin M., Soumare, Mohamed
Format: Article
Language:English
Subjects:
Aleyrodidae
Animals
Beetles
Bemisia tabaci
Body Weight - physiology
Coccinellidae
Coleoptera - growth & development
Coleoptera - physiology
developmental rate
Distribution
fecundity
Female
Fertility - physiology
Food and nutrition
Hemiptera - physiology
Life Cycle Stages - physiology
Life Tables
Male
Management
Oviposition - physiology
Survival Analysis
survivorship
Temperature
Thermal properties
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Immature development and reproductive life history of Delphastus catalinae (Horn) (Coleoptera: Coccinellidae) feeding on Bemisia tabaci biotype B (Gennadius) (Homoptera: Aleyrodidae) (= B. argentifolii Bellows and Perring) immatures was studied at three constant temperatures: 22, 26 and 30 °C. Lower developmental threshold temperatures (T0) were estimated at 9 and 9.9 °C, for males and females, respectively. Female adults weighed slightly more than males (0.587 and 0.505 mg, respectively). As temperature increased from 22 to 30 °C, developmental time from eggs to eclosion of the adult declined from 24 to 15 days. Thermal units required for immature development was ∼300 degree-days. Percentage egg hatch declined at increasing temperatures, but no significant effect of time was found. The intrinsic rate of increase, r, increased from 0.048 to 0.082 and doubling time decreased from 14.44 to 8.45 days as temperature increased from 22 to 26 °C. Mean daily fecundity was modeled as a function of time and temperature to create a 3-dimensional surface. Overall, Delphastus catalinae was found to perform better at 22 and 26 °C while 30 °C was detrimental to immature development and adult reproduction.
ISSN:1536-2442
1536-2442
DOI:10.1673/031.008.0701