Trypanosomatid parasites infecting managed honeybees and wild solitary bees

Strobl, Verena; Yanez Amayo, Victor Orlando; Straub, Lars; Albrecht, Matthias; Neumann, Peter (2019). Trypanosomatid parasites infecting managed honeybees and wild solitary bees. International journal for parasitology, 49(8), pp. 605-613. Elsevier 10.1016/j.ijpara.2019.03.006

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The parasite Crithidia mellificae (Kinetoplastea: Trypanosomatidae) infects honeybees, Apis mellifera. No pathogenic effects have been found in individual hosts, despite positive correlations between infections and colony mortalities. The solitary bee Osmia cornuta might constitute a host, but controlled infections are lacking to date. Here, we challenged male and female O. cornuta and honeybee workers in laboratory cages with C. mellificae. No parasite cells were found in any control. Parasite numbers increased 6.6 fold in honeybees between days 6 and 19 p.i. and significantly reduced survival. In O. cornuta, C. mellificae numbers increased 2-3.6 fold within cages and significantly reduced survival of males, but not females. The proportion of infected hosts increased in O. cornuta cages with faeces, but not in honeybee cages without faeces, suggesting faecal - oral transmission. The data show that O. cornuta is a host of C. mellificae and suggest that males are more susceptible. The higher mortality of infected honeybees proposes a mechanism for correlations between C. mellificae infections and colony mortalities.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Institute of Bee Health

UniBE Contributor:

Strobl, Verena; Yanez Amayo, Victor Orlando; Straub, Lars and Neumann, Peter

Subjects:

500 Science > 590 Animals (Zoology)
600 Technology > 630 Agriculture

ISSN:

0020-7519

Publisher:

Elsevier

Language:

English

Submitter:

Anna Papach

Date Deposited:

31 Mar 2020 12:09

Last Modified:

01 Apr 2020 23:54

Publisher DOI:

10.1016/j.ijpara.2019.03.006

PubMed ID:

31163178

BORIS DOI:

10.7892/boris.142086

URI:

https://boris.unibe.ch/id/eprint/142086

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