Biology of Symploce pallens (Dictyoptera: Blattellidae).
Here, we describe the biology of a relatively new pest cockroach species in Southeast Asia, Symploce pallens (Stephens) (Dictyoptera: Blattellidae). S. pallens collected from Penang Island, Malaysia, were used for the biological parameter studies and were observed for molting and reproduction events. Nymphal development took 118.2 +/- 1.7 d, with a mean of 9.5 +/- 0.1 molts. The oothecal incubation period was 36.1 +/- 0.2 d. Females produced a mean of 16.0 +/- 10.2 oothecae, with mean 17.6 +/- 0.1 nymphs per ootheca. Nymphal survivorship per ootheca was 90.4%, and 90.7% of nymphs achieved adulthood. The sex ratio did not deviate from 1:1. The mean longevity of adult males and females was 309.3 +/- 7.6 and 322.6 +/- 14.8 d, respectively. In general, S. pallens exhibited higher oothecal production and longer nymphal development and longevity compared with the German cockroach, Blattella germanica (L.).
Bujang
Nurmastini Sufina
NS
Department of Entomology and Nematology, Ft Lauderdale Research and Education Center, Institute of Food and Agricultural Sciences, University of Florida, 3205 College Ave., Ft Lauderdale, FL 33314, USA.
Lee
Chow-Yang
CY
D000818:Animals; D020048:Blattellidae / Q000187:drug effects / Q000502:physiology*; D005260:Female; D007300:Insect Control; D007306:Insecticides / Q000494:pharmacology; D008297:Male; D009758:Nymph; D012098:Reproduction
D007306:Insecticides