Temperature-Dependent Development and Thermal Sensitivity of Blaptica dubia (Blattodea: Blaberidae).
Temperature-dependent development of nymphs of the Dubia cockroach, Blaptica dubia Serville, was described using constant-temperature data collected from laboratory experiments at 15, 20, 25, 30, 35, and 40 °C. Simple linear regression models were developed based on the data from each instar. Degree-days required to complete a particular life stage were estimated as 457.5, 668, 1,031, 1,317, 1,515, 1,429, and 2,071 for instars 1-7, respectively. Nymphs developed to adulthood at 20, 25, and 30 °C, but all died before developing into fifth instar at 35 °C and into second instar at 40 °C. Critical thermal maximum (CTMax) and critical thermal minimum (CTMin) of B. dubia were also measured for each instar. CTMax ranged from 44.8 to 49.9 °C for fourth and second instars, respectively. CTMin ranged from approximately -2 °C for seventh instar to - 3.1 °C for second instar. There was no relationship between body mass (instar) and CTMax; however, CTMin was positively correlated with body mass. These results could be used to control the development rate of B. dubia and adjust the optimal rearing temperature for B. dubia in a given situation.
Department of Entomology and Plant Pathology, Auburn University, 301 Funchess Hall, Auburn, AL 36849-5413 (echowuhao@gmail.com; huxingp@auburn.edu; appelag@auburn.edu).
Hao
H
Wu
Department of Entomology and Plant Pathology, Auburn University, 301 Funchess Hall, Auburn, AL 36849-5413 (echowuhao@gmail.com; huxingp@auburn.edu; appelag@auburn.edu).
Xing Ping
XP
Hu
Department of Entomology and Plant Pathology, Auburn University, 301 Funchess Hall, Auburn, AL 36849-5413 (echowuhao@gmail.com; huxingp@auburn.edu; appelag@auburn.edu).
Arthur G
AG
Appel
D000818:Animals; D003058:Cockroaches / Q000254:growth & development / Q000502:physiology*; D005260:Female; D016014:Linear Models; D008297:Male; D009758:Nymph / Q000254:growth & development; D013696:Temperature
Blaptica dubia; critical temperature; temperature-dependent development