Scanning electron microscopy of foreleg tarsal sense organs of the poultry red mite, Dermanyssus gallinae (DeGeer) (Acari:Dermanyssidae)

Cruz, M. D. Soler; Robles, M.C. Vega; Jespersen, Jørgen B.; Kilpinen, Ole; Birkett, Michael A.; Dewhirst, Sarah Y.; Pickett, John A.

doi:10.1016/j.micron.2005.03.003

Cited by 18 publications

(17 citation statements)

References 10 publications

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“…The latter is comparable to Haller’s organ in ticks, which is considered to be responsible for detecting humidity, temperature, and odor 39,40 . Similar sensory organs have also been identified in the foreleg tarsi of the mites Dermanyssus prognephilus 41 , Dermanyssus gallinae 42 , and V. destructor 26,27 . Thus, acarids are likely to share the same mechanisms for sensory perception.…”

Section: Discussionsupporting

confidence: 54%

Honey bee parasitic mite contains the sensory organ expressing ionotropic receptors with conserved functions

Lei

Liu

Kadowaki

2018

Preprint

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17Honey bee parasitic mites (Tropilaelaps mercedesae and Varroa destructor) detect 18 temperature, humidity, and odor but the underlying sensory mechanisms are poorly 19 understood. To uncover how T. mercedesae responds to environmental stimuli inside a 20 hive, we identified the sensilla-rich sensory organ on the foreleg tarsus. The organ 21 contained four types of sensilla, which may respond to different stimuli based on their 22 morphology. We found the forelegs were enriched with mRNAs encoding sensory 23 proteins such as ionotropic receptors (IRs) and gustatory receptors (GRs), as well as 24 proteins involved in ciliary transport. We also found that T. mercedesae and Drosophila 25 melanogaster IR25a and IR93a are functionally equivalent. These results demonstrate 26 that the structures and physiological functions of ancient IRs have been conserved 27 during arthropod evolution. Our study provides insight into the sensory mechanisms of 28 honey bee parasitic mites, as well as potential targets for methods to control the most 29 serious honey bee pest. 31The number of managed honey bee colonies has declined across North America and 33 Europe in recent years 1 . Pollination by honey bees is critical for maintaining 34 ecosystems and producing many agricultural crops 2,3 . Prevention of honey bee losses 35 has, therefore, become a major issue in apiculture and agriculture. Although there are 36 many potential causes for the observed declines, ectoparasitic mites are considered to be 37 major threats to the health of honey bees and their colonies 1,4 . Varroa destructor is 38 present globally (except Australia) and causes both abnormal brood development and 39 brood death in honey bee colonies 5 . The mites feed on hemolymph and also spread 40 honey bee viruses, particularly deformed wing virus (DWV) 6,7 . In many Asian 41 countries, another honey bee ectoparasitic mite, Tropilaelaps mercedesae, is also 42 prevalent in Apis mellifera colonies 8,9 . These two emerging parasites of A. mellifera 43 share many characteristics 10 . For example, they have similar reproductive strategies 11 44 and both are vectors for DWV [12][13][14][15] . As a result, T. mercedesae or V. destructor 45 infestations have similar negative impacts on A. mellifera colonies [16][17][18] . Although T. 46 mercedesae is currently restricted to Asia, it has the potential to spread and establish 47 worldwide due to the global trade in honey bees. 48V. destructor prefers temperatures of 32 ± 2.9 ℃, reproduces best at 49 32.5-33.4 ℃, and has been shown to discriminate temperature differences of 1 ℃ 19-21 . 50Furthermore, its reproduction also depends on humidity of 55-70 % 22 . These results 51 demonstrate thermo-and hygrosensation of V. destructor play important roles to adapt 52 to the honey bee hive environment; nevertheless, chemoreception must be most 53 important in the various interactions between mites and their honey bee hosts. For 54 example, V. destructor prefers to parasitize nurse bees rather than foragers during its 55 phoreti...

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Section: Discussionsupporting

confidence: 54%

Honey bee parasitic mite contains the sensory organ expressing ionotropic receptors with conserved functions

Lei

Liu

Kadowaki

2018

Preprint

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“…The results of qRT-PCR revealed that these two genes are highly expressed in the first legs of T. mercedesae (Supplementary Fig. S11), which function as the major sensory organs similar to insect antennae [33]. Thus, these two TmIRs may represent the ancient receptors present in the common ancestor of arthropods.…”

Section: Resultsmentioning

confidence: 99%

Draft genome of the honey bee ectoparasitic mite, Tropilaelaps mercedesae, is shaped by the parasitic life history

et al. 2017

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The number of managed honey bee colonies has considerably decreased in many developed countries in recent years and ectoparasitic mites are considered as major threats to honey bee colonies and health. However, their general biology remains poorly understood. We sequenced the genome of Tropilaelaps mercedesae, the prevalent ectoparasitic mite infesting honey bees in Asia, and predicted 15 190 protein-coding genes that were well supported by the mite transcriptomes and proteomic data. Although amino acid substitutions have been accelerated within the conserved core genes of two mites, T. mercedesae and Metaseiulus occidentalis, T. mercedesae has undergone the least gene family expansion and contraction between the seven arthropods we tested. The number of sensory system genes has been dramatically reduced, but T. mercedesae contains all gene sets required to detoxify xenobiotics. T. mercedesae is closely associated with a symbiotic bacterium (Rickettsiella grylli-like) and Deformed Wing Virus, the most prevalent honey bee virus. T. mercedesae has a very specialized life history and habitat as the ectoparasitic mite strictly depends on the honey bee inside a stable colony. Thus, comparison of the genome and transcriptome sequences with those of a tick and free-living mites has revealed the specific features of the genome shaped by interaction with the honey bee and colony environment. Genome and transcriptome sequences of T. mercedesae, as well as Varroa destructor (another globally prevalent ectoparasitic mite of honey bee), not only provide insights into the mite biology, but may also help to develop measures to control the most serious pests of the honey bee.

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“…T. urticae does not have antenna that is the major olfactory sensory organ in insects and many other arthropods. Instead, T. urticae has ORNs mainly in the Þrst pair of legs although their exact function is unknown (Soler Cruz et al 2005). However, the number of olfactory sensilla and glomeruli in T. urticae is much smaller than those of insects (van Wijk et al 2006a,b).…”

Section: Discussionmentioning

confidence: 99%

Repellent Effect of Santalol From Sandalwood Oil Against Tetranychus urticae (Acari: Tetranychidae)

Roh

Park

2012

jnl. econ. entom.

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Thirty-four essential oils were screened for their repellent activities against the twospotted spider mite, Tetranychus urticae Koch (Acarina: Tetranychidae), at 0.1% concentration level using choice and no-choice laboratory bioassays. Of these, 20 essential oils showed significant repellencies against T. urticae in the choice tests. In subsequent no-choice tests using these 20 essential oils, only sandalwood oil showed significant repellency against T. urticae. Total number of eggs oviposited by T. urticae was significantly lower than controls in the choice tests when the kidney bean leaves were treated with 1 of 14 essential oils. The significant repellency of sandalwood oil against T. urticae lasted at least for 5 h at the 0.1% concentration level. Our GC-MS analysis indicated that the major components of the sandalwood oil were alpha-santalol (45.8%), beta-santalol (20.6%), beta-sinensal (9.4%), and epi-beta-santalol (3.3%). Santanol, a mixture of the two main components in the sandalwood oil, appears to be responsible for the repellency of sandalwood oil against T. urticae.

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Scanning electron microscopy of foreleg tarsal sense organs of the poultry red mite, Dermanyssus gallinae (DeGeer) (Acari:Dermanyssidae)

Cited by 18 publications

References 10 publications

Honey bee parasitic mite contains the sensory organ expressing ionotropic receptors with conserved functions

Honey bee parasitic mite contains the sensory organ expressing ionotropic receptors with conserved functions

Draft genome of the honey bee ectoparasitic mite, Tropilaelaps mercedesae, is shaped by the parasitic life history

Repellent Effect of Santalol From Sandalwood Oil Against Tetranychus urticae (Acari: Tetranychidae)

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