Naslov
TRANSMISSION OF BACILLUS LARVAE SPORES THROUGH THE SOCIAL CONTACTS WITHIN HONEYBEE COLONIES (APIS MELLIFERA CARNICA POLLMAN, 1879)

Autori
Šekulja, Damir ; Pechhacker, Hermann ; Licek, Elisabeth.

Izvornik
Zbornik Veleučilišta u Rijeci (1848-1299) 1 (2013), 1; 321-335

Vrsta, podvrsta i kategorija rada
Radovi u časopisima, članak, znanstveni

Ključne riječi
Paenibacillus larvae, spores, filtration, honey sac

Sažetak
American foulbrood is widely distributed, very persistent honey bees disease, caused by the spore forming bacterium Paenibacillus larvae. The disease is highly contagious and unless recognized in early phase, can give rise to significant losses for beekeepers. The purpose of this study was to investigate what happens with the level of the concentration of P. larvae spores during the transmission of food through social contacts and during various times of digestion of the spore contaminated food, in honey sac. A method described by Ritter and Kiefer (1993) for determining the presence and number of P. larvae spores in honey samples, has been modified in a way that through the number of the grown P. larvae colonies on MYP agar, it was possible to determine the concentration of P. larvae spores in honey sac of individual bees. Regardless of the quantity of food delivered through social contacts, the known concentration of P. larvae spores has remained unchanged. After various times of digestion, the concentration of P. larvae spores was also constant. Therefore, the ability of honeybees to reduce the number of P. larvae spores from their honey sac by filtration was not proven.

Izvorni jezik
Engleski

Znanstvena područja
Biotehnologija

POVEZANOST RADA