A molting rhythm for serum proteins of the cockroach, Blatta orientalis.

The Daily Rhythm of Activity of the Cockroach, Blatta Orientalis L. Ii. Observations and Experiments on a Natural Infestation

The Daily Rhythm of Activity of the Cockroach, Blatta Orientalis L. I. Aktograph Experiments, Especially in Relation to Light

IN the last few years there has been an increasing interest in animal rhythms. Various aspects of the subject have been reviewed by Szymanski (1920), Fox (1923), Hoffmann (1926), Richter (1927), AmirthaUngam (1928), Stein-Beling (1935), Scott (1936), Gunn et al. (1937), Pie'ron (1937) and Kalmus (1938a, b). This paper is concerned with the daily rhythm in the locomotory activity of the cockroac...

Cockroach larval-specific protein, a tyrosine-rich serum protein.

Larval-specific protein (LSP) is the most abundant protein in the hemolymph of cockroaches shortly before molting, but is rapidly cleared from the hemolymph during the molt (Kunkel, J. G., and Lawler, D. M. (1974) Comp. Biochem. Physiol. 47B, 697-710). Blatta orientalis LSP was purified by sedimentation in preparative sucrose gradients followed by 2-hydroxypropylamino-cellulose anion-exchange c...

Larval-specific protein in the order dictyoptera. II. Antagonistic effects of ecdysone and regeneration on LSP concentration in the hemolymph of the Oriental cockroach, Blatta orientalis.

1. Larval-specific protein, LSP, reaches a peak concentration in cockroach hemolymph 2448 hr prior to ecdysis. 2. When ecdysis is delayed by autotomy-induced leg regeneration, LSP continues to accumulate and reaches a higher than normal peak concentration 28 hr prior to the delayed ecdysis. 3. Ecdysone inhibits the regeneration-induced delay and returns the normal pattern of ecdysis and LSP acc...

Evaluation of bacterial infection of external surface and digestive system of cockroach species

Introduction: The presence of cockroaches has health implications, such as nosocomial infection, as the insects move freely from areas within and around hospitals that may harbor pathogenic organisms. The aims of the present study were to detect cockroach species and bacterial infection transmitted by their surface and their digestive system. Methods: In this study we caught 250 cockroac...