background and objective: bhitarkanika is the mangrove ecosystem of orissa, india. it was not explored before for occur  rence and distribution of streptomyces . with the aim of isolation and characterization of special group of bacteria from this mangrove ecosystem, the present study has been made. materials and methods: isolates of streptomyces were obtained from plant, soil and water collect...

Sir: During the course of our screening program for new anthracycline antibiotics, four /5-rhodomycinone glycosides, A447 A, B, C and D were found in the acetone extract of cultured mycelia of a strain designated as A447. Based on NMR spectral analysis and chemical degradation, A447 A and B were identified as cosmomycins D and C1^, respectively, while A447 C and D were found to be new congeners...

Proper diet is critical for laboratory-reared animals, as it may affect not only their welfare, but also experimental results. Amphipods (Crustacea: Amphipoda) play important roles in ecosystems and are often used environmental research. Endemic amphipods from the ancient Lake Baikal promising laboratory bioassays; however, there currently no cultures. In this work, we determine how different d...

The species-rich subgenus Polyommatus (Agrodiaetus) has become one of the best studied groups of Palearctic blue butterflies (Lepidoptera, Lycaenidae). However, the identity and phylogenetic position of some rare taxa from Iran have remained unclear. An enigmatic, recently described Central Iranian species Polyommatus (Agrodiaetus) shirkuhensis ten Hagen et Eckweiler, 2001 has been considered a...