... have been shown to accelerate female reproduction in the German cockroach, Blattella germanica (L.), by stimulating JH production. However, it is not clear in this or any other insect species whether social facilitation of the reproductive rate occurs throughout the ovarian cycle or only at certain...

...Yongliang Fan; Dorit Eliyahu; Coby Schal SUMMARY Cuticular hydrocarbons of arthropods serve multiple functions, including as barriers to water loss and as pheromones and pheromone precursors. In the oviparous German cockroach, Blattella germanica , long-chain hydrocarbons are produced by oenocytes...

... deposition of chemical cues. In this study, we investigated whether scent trails can influence path selection in the cockroach Blattella germanica (L.). Experiments were designed to separate the role of prior experience based on the orientation of the path and the presence of trails. In a first phase...

... of variance (ANOVA)], indicating water availability to the female might influence the water-transfer process(es). Table 1. Distribution of radiolabel in oothecae attached to female Blattella germanica after injection with 3 H 2 O Table 2. Distribution of radiolabel in oothecae attached...

...Yongliang Fan; Jody Chase; Veeresh L. Sevala; Coby Schal SUMMARY Large amounts of hydrocarbons accumulate during vitellogenesis in the developing basal oocytes of the German cockroach Blattella germanica (L.), and all ovarian hydrocarbons are deposited into an egg case (ootheca) during oviposition...

...Donald E. Mullins; Clifford B. Keil; Robert H. White ABSTRACT The investment of nitrogenous materials by female and male German cockroaches Blattella germanica (L.) into their progeny was examined. Adult females maintained on dog food invested 34 % of their dry mass and 26 % of their nitrogen...