scholarly journals Parasitic Mite Infestation in Introduced Colonies of European Bumblebees, Bombus terrestris.

2000 ◽  
Vol 44 (1) ◽  
pp. 47-50 ◽  
Author(s):  
Koichi Goka ◽  
Kimiko Okabe ◽  
Satomi Niwa ◽  
Masahiro Yoneda
Keyword(s):  
Bombus Terrestris ◽  
Mite Infestation ◽  
Parasitic Mite

scholarly journals Honey bee suppresses the parasitic mite Vitellogenin by antimicrobial peptide

2020 ◽  
Author(s):  
Yunfei Wu ◽  
Qiushi Liu ◽  
Benjamin Weiss ◽  
Martin Kaltenpoth ◽  
Tatsuhiko Kadowaki
Keyword(s):  
Viral Replication ◽  
Honey Bee ◽  
Fruit Fly ◽  
Mite Infestation ◽  
Negative Effects ◽  
Deformed Wing Virus ◽  
Active Viral Replication ◽  
Tropilaelaps Mercedesae ◽  
Parasitic Mite ◽  
Physiological Outcomes

AbstractThe negative effects of honey bee parasitic mites and deformed wing virus (DWV) on honey bee and colony health have been well characterized. However, the relationship between DWV and mites, particularly viral replication inside the mites, remains unclear. Furthermore, the physiological outcomes of honey bee immune responses stimulated by DWV and the mite to the host (honey bee) and perhaps the pathogen/parasite (DWV/mite) are not yet understood. To answer these questions, we studied the tripartite interactions between the honey bee, Tropilaelaps mercedesae, and DWV as the model. T. mercedesae functioned as a vector for DWV without supporting active viral replication. Thus, DWV negligibly affected mite fitness. Mite infestation induced mRNA expression of antimicrobial peptides (AMPs), Defensin-1 and Hymenoptaecin, which correlated with DWV copy number in honey bee pupae and mite feeding, respectively. Feeding T. mercedesae with fruit fly S2 cells heterologously expressing honey bee Hymenoptaecin significantly downregulated mite Vitellogenin expression, indicating that the honey bee AMP manipulates mite reproduction upon feeding on bee. Our results provide insights into the mechanism of DWV transmission by the honey bee parasitic mite to the host, and the novel role of AMP in defending against mite infestation.

scholarly journals Consequences of Parasitic Mite Infestation on Muskrat (Ondatra zibethicus)

2011 ◽  
Vol 71 (4) ◽  
pp. 516-522 ◽  
Author(s):  
Jeffrey A. Prendergast ◽  
William E. Jensen
Keyword(s):  
Mite Infestation ◽  
Ondatra Zibethicus ◽  
Parasitic Mite

scholarly journals Resistance rather than tolerance explains survival of savannah honeybees (Apis mellifera scutellata) to infestation by the parasitic mite Varroa destructor

Parasitology ◽  
2015 ◽  
Vol 143 (3) ◽  
pp. 374-387 ◽  
Author(s):  
URSULA STRAUSS ◽  
VINCENT DIETEMANN ◽  
HANNELIE HUMAN ◽  
ROBIN M. CREWE ◽  
CHRISTIAN W. W. PIRK
Keyword(s):  
Apis Mellifera ◽  
Varroa Destructor ◽  
Resistance Mechanisms ◽  
Mite Infestation ◽  
Apis Mellifera Scutellata ◽  
Individual Host ◽  
Breeding Programmes ◽  
Parasitic Mite ◽  
Susceptible Populations ◽  
The Individual

SUMMARYVarroa destructor is considered the most damaging parasite affecting honeybees (Apis mellifera L.). However, some honeybee populations such as the savannah honeybee (Apis mellifera scutellata) can survive mite infestation without treatment. It is unclear if survival is due to resistance mechanisms decreasing parasite reproduction or to tolerance mechanisms decreasing the detrimental effects of mites on the host. This study investigates both aspects by quantifying the reproductive output of V. destructor and its physiological costs at the individual host level. Costs measured were not consistently lower when compared with susceptible honeybee populations, indicating a lack of tolerance. In contrast, reproduction of V. destructor mites was distinctly lower than in susceptible populations. There was higher proportion of infertile individuals and the reproductive success of fertile mites was lower than measured to date, even in surviving populations. Our results suggest that survival of savannah honeybees is based on resistance rather than tolerance to this parasite. We identified traits that may be useful for breeding programmes aimed at increasing the survival of susceptible populations. African honeybees may have benefited from a lack of human interference, allowing natural selection to shape a population of honeybees that is more resistant to Varroa mite infestation.

Mite infestation rate of pet dogs with ear dermatoses

1996 ◽  
Vol 34 (2) ◽  
pp. 143 ◽  
Author(s):  
G S Park ◽  
J S Park ◽  
B K Cho ◽  
W K Lee ◽  
J H Cho
Keyword(s):  
Infestation Rate ◽  
Mite Infestation ◽  
Pet Dogs
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