Discrimination between nestmates and non-nestmates in social insects is thought to rely on the pattern of cuticular hydrocarbons. We investigated the cuticular hydrocarbon profiles of 2 parapatric sibling ant species, Temnothorax nylanderi (Förster, 1850) and Temnothorax crassispinus (Karavaiev, 1926), and their hybrid. We found that although the profiles show considerable similarities, a discriminant analysis based on the relative peak areas of cuticular hydrocarbons separates the 3 taxa. The profiles of hybrids were not consistently intermediate between those of the paternal species, suggesting either non-additive interactions among the parental biosynthetic pathways or systematic differences in environment-derived odor cues.

Journal of Medical Entomology and Parasitology is one of the series issued quarterly by the Egyptian Academic Journal of Biological Sciences. It is an important specialist journal covering the latest advances in that subject. It publishes original research and review papers on all aspects of basic and applied medical entomology, parasitology and host-parasite relationships, including the latest discoveries in parasite biochemistry, molecular biology, genetics, ecology and epidemiology in the content of the biological, medical entomology and veterinary sciences. In addition to that, the journal promotes research on the impact of living organisms on their environment with emphasis on subjects such a resource, depletion, pollution, biodiversity, ecosystem…..etc. www.eajbs.eg.net Provided for non-commercial research and education use. Not for reproduction, distribution or commercial use.

Background and Objective: Bacterial and fungal infections are major public health problems. Emerging of drug-resistant microbial strains urges the need for the development of alternative untraditional antimicrobial agents. Bee venom is a rich source of secondary metabolites and antimicrobial agents. In this study, the antimicrobial and antifungal potential of Apis mellifera BV (AmBV) against some medically important bacterial and fungal pathogens was investigated. Materials and Methods: Broth microdilution method and Colony Forming Unit (CFU) assay were used to screen the antibacterial potential of AmBV. Similarly, the antifungal activity of AmBV was evaluated using the agar-well diffusion assay. Moreover, the minimum inhibitory concentration (MIC) values of AmBV against tested microorganisms were determined. Results: AmBV significantly inhibited bacterial and fungal growth.

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