Bee year: Basic physiological strategies to cope with seasonality

0549586 - BC 2023 RIV US eng J - Článek v odborném periodiku
Kodrík, Dalibor - Krištůfek, Václav - Svobodová, Zdeňka
Bee year: Basic physiological strategies to cope with seasonality.
Comparative Biochemistry and Physiology A-Molecular & Integrative Physiology. Roč. 264, FEB 01 (2022), č. článku 111115. ISSN 1095-6433. E-ISSN 1531-4332
Grant CEP: GA MŠMT LTAUSA17116
Institucionální podpora: RVO:60077344
Klíčová slova: adipokinetic hormone * metabolism * seasonal fluctuations
Obor OECD: Entomology
Impakt faktor: 2.3, rok: 2022
Způsob publikování: Omezený přístup
https://www.sciencedirect.com/science/article/pii/S1095643321002233?via%3Dihub

Worker honey bees are subject to biochemical and physiological changes throughout the year. This study aimed to provide the reasons behind these fluctuations. The markers analysed included lipid, carbohydrate, and protein levels in the haemolymph, the activity of digestive enzymes in the midgut, the levels of adipokinetic hormone (AKH) in the bee central nervous system, the levels of vitellogenins in the bee venom and haemolymph, and the levels of melittin in the venom. The levels of all the main nutrients in the haemolymph peaked mostly within the period of maximal bee activity, whereas the activity of digestive enzymes mostly showed a two-peak course. Furthermore, the levels of AKHs fluctuated throughout the year, with modest but significant variations. These data suggest that the role of AKHs in bee energy metabolism is somewhat limited, and that bees rely more on available food and less on body deposits. Interestingly, the non-metabolic characteristics also fluctuated over the year. The vitellogenin peak reached its maximum in the haemolymph in winter, which is probably associated with the immunoprotection of long-lived winter bees. The analysis of bee venom showed the maximal levels of vitellogenin in autumn, however, it is not entirely clear why this is the case. Finally, melittin levels showed strong fluctuations, suggesting that seasonal control was unlikely.
Trvalý link: https://hdl.handle.net/11104/0339245