Darmst?dter Kiefernsamen

Ohne Zusammenfassung     

Die Bedeutnng der Mycorhiza oder Pilzwurzel

Ohne Zusammenfassung     

Drone Laying Honey Bee Workers in Queen Monitoring Cages

Techniques to monitor honey bee (Apis mellifera) egg production in cages allow researchers to study how different environmental factors contribute to reproduction. However, although the conditions required to facilitate queen egg production in a laboratory setting have been established, limited work has addressed the requirements for stimulating and monitoring worker egg laying. Here, we documented that drone laying workers will lay eggs in Queen Monitoring Cages (QMC), specialized cages designed to facilitate queen egg laying under controlled conditions. Egg production and worker mortality were compared between QMCs containing queens and those containing drone laying workers. High-definition images of the last abdominal segments of living first-instar larvae hatched from worker laid eggs and those putatively laid by queens were qualitatively compared to identify candidate characteristics to determine their sex.     

Esophagoscopy.

Esophageal pathology is one of the areas that had the major benefits from the advent of endoscopy. Esophagoscopy is a highly reliable diagnostic method for evaluating esophageal disorders that affect the mucosa or alter the lumen of the organ, such as foreign bodies, esophagitis, reflux disease, strictures, ulcers, fistula, and neoplasia. With endoscopy, the treatment of esophageal disorders has greatly improved as well, with the retrieval of foreign bodies and the dilation of esophageal strictures under direct visualization the main therapeutic indications.     

Genome analysis of African swine fever virus isolated in Italy in 1983

An African Swine Fever virus (ASFV) isolated in an 1983 outbreak of the disease in Piemonte, Italy, was related by restriction endonuclease analysis of the viral genome to ASFV strains isolated in the Dominican Republic (1978), Haiti (1981) and Cameroon (1982).