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.

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...

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

1. Polyacrylamide gel electrophoresis (PAGE) in 4% gels of Blatta orientalis larval hemolymph revealed 4 major proteins. 2. Maximum incorporation of [14C]-leucine into total hemolymph protein occurs within 24 hr and is followed by negligible turnover in the next 24 hr. 3. Quantitative PAGE was used to monitor concentration changes during the molting cycle in synchronously molting cultures. 4. A...

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

The influence of the juvenile hormone analogue (S)-hydroprene on Aprostocetus hagenowii (Hymenoptera: Eulophidae), an oothecal parasitoid of the oriental cockroach Blatta orientalis (Dictyoptera: Blattidae)

The synthetic juvenile hormone analogue (S)-hydroprene can control populations of the oriental cockroach Blatta orientalis Linnaeus. Eradication of B. orientalis infestations, however, can take in excess of two years. In an attempt to reduce the time (S)-hydroprene takes to eliminate a population of oriental cockroaches, we explored the possibility of using the oothecal endoparasitoid Aprostoce...

Biochemistry of Pyrethroid Resistance in German Cockroach (Dictyoptera, Blatellidae) from Hospitals of Sari, Iran

The German cockroach is an important household insect pest mechanically involved in transmission of a variety of diseases to humans. Different classes of insecticides have extensively been used for its control leading to insecticide resistance development. Hence, for an optimal control of this pest, the status and underlying mechanisms of insecticide resistance should be studied in this group o...