Winter honeybee (Apis mellifera) populations show greater potential to induce immune response than summer ones after immune stimuli
| Autor: | Pavel Hyršl, Mária Škrabišová, Jaroslav Havlik, Dalibor Titěra, Martin Kunc, Silvie Dostálková, Marek Petřivalský, Pavel Dobeš, Jana Hurychová, Jiří Danihlík |
|---|---|
| Rok vydání: | 2020 |
| Předmět: |
0106 biological sciences
0303 health sciences Physiology media_common.quotation_subject Antimicrobial peptides Longevity Zoology Aquatic Science Biology 01 natural sciences Worker bee 010602 entomology 03 medical and health sciences Vitellogenin Immune system Insect Science Hemolymph Temperate climate biology.protein Animal Science and Zoology Molecular Biology Ecology Evolution Behavior and Systematics Overwintering 030304 developmental biology media_common |
| Zdroj: | Journal of Experimental Biology. |
| ISSN: | 1477-9145 0022-0949 |
| DOI: | 10.1242/jeb.232595 |
| Popis: | In the temperate climates of middle Europe and North America, two distinct honeybee (Apis mellifera) populations are found in colonies: short-living summer bees emerge in spring and survive until summer, whereas long-living winter bees emerge in late August and overwinter. Besides the difference in their life spans, each of these populations fulfills a different role in the colonies and individual bees have distinct physiological and immunological adaptations depending on their roles. For instance, winter worker bees have higher vitellogenin levels and larger reserves of nutrients in the fat body than summer bees. The differences between the immune systems of both populations are well described at the constitutive level; however, our knowledge of its inducibility is still very limited. In this study, we focus on the response of 10-day-old honeybee workers to immune challenges triggered in vivo by injecting heat-killed bacteria, with particular focus on honeybees that emerge and live under hive conditions. Responses to bacterial injections differed between summer and winter bees. The latter induced more intense response, including higher expression of antimicrobial genes and antimicrobial activity, as well as a significant decrease in vitellogenin gene expression and its concentration in the hemolymph. The intense immune response observed in winter honeybees may contribute to our understanding of the relationships between colony fitness and infection with pathogens, as well as its association with successful overwintering. |
| Databáze: | OpenAIRE |
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