Ecology

Associations

Virus / infection vector
Deformed Wing virus is spread by Varroa jacobsoni

Virus / infection vector
Kakugo virus is spread by Varroa jacobsoni

In Great Britain and/or Ireland:
Animal / parasite / ectoparasite / blood sucker
Varroa jacobsoni sucks the blood of pupa of Apis mellifera

Animal / parasite / ectoparasite
Varroa jacobsoni ectoparasitises adult of

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Molecular Biology and Genetics

Molecular Biology

Barcode data: Varroa jacobsoni

The following is a representative barcode sequence, the centroid of all available sequences for this species.


There are 3 barcode sequences available from BOLD and GenBank.  Below is a sequence of the barcode region Cytochrome oxidase subunit 1 (COI or COX1) from a member of the species.  See the BOLD taxonomy browser for more complete information about this specimen and other sequences.

ATCCGTGTAGAGTTAGGTCAACCTGGTTCTTTTATTGGGGAT---GATCAAATTTATAATACTATTGTTACTTCTCATGCTTTTGTAATAATTTTTTTTATAGTTATACCTGCTATAATTGGAGGGTTTGGTAATTGATTAGTTCCTTTAATA---ATTTCTGCACCAGATATAGCTTTTCCGCGATTAAATAATATAAGTTTTTGGTTATTATTACCTTCACTTAGTTTATTAATTTTTTCTTCTTTTATTGAAAGTGGAGTAGGAACGGGTTGAACGGTTTATCCTCCTTTATCAAGAAATTTATTTCATAGAGGAGTAGCAGTTGATTTAGGA---ATTTTAAGTTTACATTTAGCTGGAATTTCTTCTATTATAAGATCTATTAATTTTATTGCTACTATTTTAAATATACGTGTTAAGGGGATAAATCTTGAAATAATACCTTTATTTGTATGGTCAGTTTTTATTACTACTATTTTATTATTATTATCATTACCTGTTTTAGCAGGA---GCTATTACAATATTATTTACAGATCGAAATTTTAATACTACTTTTTTTGATCCTAGAGGGGGAGGAGATCCTATTTTATATCAACATTTATTTTGATTTTTTGGGCATCCAGAAGTTTATATTTTAATTTTACCTGGATTTGGAATTATTTCTCATGTAATTTGTATACAAAGCGGGAAAAAG---CAACCTTTTGGTAATTTAGGGATAATTTATGCTATAATAACTATTGGTATTTTAGGTTTTATTGTATGAGCTCATCATATATTTACAGTAGGTATAGATATTGATACTCGGGCTTATTTTACTGCGGCTACAATGATTATTGCGGTTCCCACTGGTATTAAAATTTTTTCTTGACTA---GCTACAATTCATGGTT
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© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Statistics of barcoding coverage: Varroa jacobsoni

Barcode of Life Data Systems (BOLDS) Stats
Public Records: 3
Specimens with Barcodes: 3
Species With Barcodes: 1
Creative Commons Attribution 3.0 (CC BY 3.0)

© Barcode of Life Data Systems

Source: Barcode of Life Data Systems (BOLD)

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Wikipedia

Varroa jacobsoni

Varroa jacobsoni is a species of mite that parasitises Apis cerana (Asian honey bees). The more damaging Varroa destructor was previously included under the name V. jacobsoni, but the two species can be separated on the basis of the DNA sequence of the cytochrome oxidase I (COI) gene in the mitochondrial DNA.[1]

Contents

Biogeography [edit]

Prior to recent studies, V. jacobsoni was considered homogeneous; however, current research has detected genetic variance among populations by using genetic markers.[2][3] This finding has led to the belief that V. jacobsoni was introduced to the Americas multiple times. The hosts switch between the eastern A. cerana and the western A. mellifera is the major factor that broadens the pathological transmission of V. jacobsoni.[4] It has spread worldwide with the exception of Australia, central Africa, and New Zealand.

Evolution [edit]

At least 30 lineages of mites have specialised in living with bees. Most mite species associated with bee nests are either saprophagous or cleptophagous. Saprophagous is when mites eat hive debris, especially parts of fungi growing. Cleptophagous is when mites eat pollen and other nutrients stored by bees. Interestingly, the small few that have evolved to become parasitic appear to have arisen from predatory lineages. The family Laelapidae has 12 genera that predate on sting-less bees (Meliponinae). Thus, it appears that the brood parasites (Varroidae) of honeybees (Apinae) evolved from the Laelapidae family.[5]

Life cycle [edit]

The life cycle of V. jacobsoni in A. mellifera begins with a mature mated female entering a larval cell of a honey bee. Once the cell is capped, the adult female mite hides for five days inside the larval food near the bottom of the cell. After about five hours, the mite is released from the food, where it then begins feeding on the host's haemolymph.[6] After sixty hours, the adult female mite lays its first egg on the wall of the cell.[7] Unfertilised mite eggs produce male offspring, who are able to mate with the female offspring. The adult mated female then emerges from the cell with the emerging bee. Once mites are released to the environment, they are transferred to other bees through close contact. The adult female mites then feed through the intersegmental membrane on honeybee haemolymph. The cycle is then completed.

Chemical resistance to acaricides [edit]

Acaricides are pesticides that kill members of the Acari group, which includes ticks and mites. Acaricides were at one time an effective method in regulating the transmission of V. jacobsoni in honey bees, but the build of residues in resistant-strains to acaricides have decreased the effectiveness of mite control in honey bees. Among those acaricides used are acrinathrin, amitraz, bromopropylate, chlordimeform, coumaphos, flumethrin and fluvalinate. Fluvalinate is the most effective acaricide.[8]

References [edit]

  1. ^ Maria J. Navajas (2010). "Tracking the colonisation history of the invasive species Varroa destructor". In Maurice Sabelis & Jan Bruin. Trends in Acarology. Proceedings of the 12th International Congress. Springer. pp. 375–378. doi:10.1007/978-90-481-9837-5_61. ISBN 978-90-481-9836-8. 
  2. ^ B. Kraus & G. Hunt (1995). "Differentiation of Varroa jacobsoni Oud. populations by random amplification of polymorphic DNA (RAPD)" (PDF). Apidologie 26 (4): 283–290. doi:10.1051/apido:19950402. 
  3. ^ L. I. De Guzman, T. E. Rinderer, J. A. Stelzer & D. L. Anderson (1998). "Congruence of RAPD and mitochondrial markers in assessing Varroa jacobsoni genotypes". Journal of Apicultural Research 37 (2): 49–51. 
  4. ^ D. L. Anderson & S. Fuchs (1998). "Two genetically distinct populations of Varroa jacobsoni with contrasting reproductive abilities on Apis mellifera". Journal of Apicultural Research 37: 69–78. 
  5. ^ G. C. Eickwort (1994). "Evolution and life-history patterns of mites associated with bees". In Marilyn A. Houck. Mites. Ecological and Evolutionary Analysis of Life History Patterns. Chapman & Hall. pp. 218–251. ISBN 978-0-412-02991-2. 
  6. ^ Gérard Donzé & Patrick M. Guerin (1994). "Behavioral attributes and parental care of Varroa mites parasitizing honeybee brood". Behavioral Ecology and Sociobiology 34 (5): 305–319. JSTOR 4600948. 
  7. ^ S. J. Martin (1994). "Ontogenesis of the mite Varroa jacobsoni Oud. in worker brood of the honey bee Apis mellifera L. under natural conditions" (PDF). Experimental and Applied Acarology 18: 87–100. 
  8. ^ Norberto Milani (1999). "The resistance of Varroa jacobsoni Oud. to acaricides". Apidologie 30 (2–3): 229–234. doi:10.1051/apido:19990211. 
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