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{{Short description|Genus of mites}}
{{Taxobox
{{Taxobox
| image = Parasitellus talparum dorsal.jpg
| image = Parasitellus talparum dorsal.jpg
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'''''Parasitellus''''' (formerly ''Parasitus''<ref name=":0">{{Cite journal|last=Koulianos|first=S.|last2=Schwarz|first2=H. H.|date=1999-06-01|title=Reproduction, development and diet of Parasitellus fucorum (Mesostigmata: Parasitidae), a mite associated with bumblebees (Hymenoptera: Apidae)|url=http://onlinelibrary.wiley.com/doi/10.1111/j.1469-7998.1999.tb01202.x/abstract|journal=Journal of Zoology|language=en|volume=248|issue=2|pages=267–269|doi=10.1111/j.1469-7998.1999.tb01202.x|issn=1469-7998}}</ref>) is a genus of [[mite]]s in the family [[Parasitidae]]<ref>{{cite web |editor=Joel Hallan |url=http://insects.tamu.edu/research/collection/hallan/Acari/Family/Parasitidae.txt |title=Parasitidae Species Listing |work=Biology Catalog |publisher=[[Texas A&M University]] |accessdate=September 4, 2010}}</ref> which are obligatory [[Parasitism|parasites]] of [[bumblebee]]s.<ref name=":0" /><ref>{{Cite journal|last=Rożej|first=Elżbieta|last2=Witaliński|first2=Wojciech|last3=Szentgyörgyi|first3=Hajnalka|last4=Wantuch|first4=Marta|last5=Moroń|first5=Dawid|last6=Woyciechowski|first6=Michal|date=2017-04-21|title=Mite species inhabiting commercial bumblebee (Bombus terrestris) nests in Polish greenhouses|url=https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3273685/|journal=Experimental & Applied Acarology|volume=56|issue=3|pages=271–282|doi=10.1007/s10493-012-9510-8|issn=0168-8162|pmc=3273685|pmid=22270110}}</ref> These mites can be found clinging to the carapace, sometimes in large numbers.<ref name=":1">{{Cite journal|last=Schwarz|first=H.H.|last2=Huck|first2=K.|date=1997-11-01|title=Phoretic mites use flowers to transfer between foraging bumblebees|url=https://dx.doi.org/10.1007/s000400050051|journal=Insectes Sociaux|language=English|volume=44|issue=4|pages=303–310|doi=10.1007/s000400050051|issn=0020-1812}}</ref><ref>{{Cite web|url=http://rovarok.blog.hu/2014/10/20/a_poszmehek_termeszetes_ellensegei|title=A poszméhek természetes ellenségei|last=Dr. Sárospataki Miklós|first=|date=|website=HATLÁBÚAK BIRODALMA. A rovarászok blogja.|archive-url=|archive-date=|dead-url=|access-date=2017-04-21}}</ref> Mites in this genus hibernate in the [[deutonymph]]al stage.<ref name=":2">{{Cite book|url=https://books.google.com/books/about/Parasitid_Mites_Associated_with_Bumblebe.html?id=MDjfQwAACAAJ&redir_esc=y|title=Parasitid Mites Associated with Bumblebees in Alberta, Canada (Acarina, Parasitidae, Hymenoptera, Apidae)|last=Richards|first=Lynn A.|date=1976-01-01|publisher=University of Kansas|language=en}}</ref> In the tritonymph stage they can actively transfer from bumblebee to bumblebee from flowers, where they can survive up to 24 hours.<ref name=":1" /> After they arrive in a bumblebee nest, they will [[Moulting|moult]] into adults.<ref name=":0" /><ref name=":2" /><ref>{{Cite book|url=https://link.springer.com/chapter/10.1007/978-1-4615-2389-5_9|title=Mites|last=Eickwort|first=George C.|date=1994-01-01|publisher=Springer US|isbn=9781461360124|editor-last=Houck|editor-first=Marilyn A.|pages=218–251|language=en|doi=10.1007/978-1-4615-2389-5_9}}</ref> Whilst it is not known what factors trigger the mite to molt, in laboratory conditions ''P. fucorum'' were found to moult after eating fresh pollen, although overall moulting success was low.<ref name=":0" /> They are [[Kleptoparasitism|kleptoparasitic]] or neutral to beneficial, depending on life stage; females and deutonymphs feed on provisioned pollen, while other stages are predators of small arthropods.<ref name=":3">{{Cite web|url=http://idtools.org/id/mites/beemites/factsheet.php?name=15277|title=Parasitellus|last=Klimov, P.B., B. OConnor, R. Ochoa, G.R. Bauchan, J. Scher.|first=|date=2016|website=Bee Mite ID: Bee-Associated Mite Genera of the World.|publisher=USDA APHIS Identification Technology Program (ITP)|location=Fort Collins, CO.|archive-url=|archive-date=|dead-url=|access-date=2017-05-03}} {{PD-notice}}</ref>
'''''Parasitellus''''' (formerly ''Parasitus''<ref name=":0">{{Cite journal|last1=Koulianos|first1=S.|last2=Schwarz|first2=H. H.|date=1999-06-01|title=Reproduction, development and diet of Parasitellus fucorum (Mesostigmata: Parasitidae), a mite associated with bumblebees (Hymenoptera: Apidae)|journal=Journal of Zoology|language=en|volume=248|issue=2|pages=267–269|doi=10.1111/j.1469-7998.1999.tb01202.x|issn=1469-7998}}</ref>) is a genus of [[mite]]s in the family [[Parasitidae]]<ref>{{cite web |editor=Joel Hallan |url=http://insects.tamu.edu/research/collection/hallan/Acari/Family/Parasitidae.txt |title=Parasitidae Species Listing |work=Biology Catalog |publisher=[[Texas A&M University]] |accessdate=September 4, 2010 |archiveurl= https://web.archive.org/web/20100807053342/http://insects.tamu.edu/research/collection/hallan/Acari/Family/Parasitidae.txt| archivedate= 7 August 2010 | url-status=dead}}</ref> which are obligatory [[Parasitism|parasites]] of [[bumblebee]]s.<ref name=":0" /><ref>{{Cite journal|last1=Rożej|first1=Elżbieta|last2=Witaliński|first2=Wojciech|last3=Szentgyörgyi|first3=Hajnalka|last4=Wantuch|first4=Marta|last5=Moroń|first5=Dawid|last6=Woyciechowski|first6=Michal|date=2017-04-21|title=Mite species inhabiting commercial bumblebee (Bombus terrestris) nests in Polish greenhouses|journal=Experimental & Applied Acarology|volume=56|issue=3|pages=271–282|doi=10.1007/s10493-012-9510-8|issn=0168-8162|pmc=3273685|pmid=22270110}}</ref> These mites can be found clinging to the carapace, sometimes in large numbers.<ref name=":1">{{Cite journal|last1=Schwarz|first1=H.H.|last2=Huck|first2=K.|date=1997-11-01|title=Phoretic mites use flowers to transfer between foraging bumblebees|journal=Insectes Sociaux|language=English|volume=44|issue=4|pages=303–310|doi=10.1007/s000400050051|s2cid=36137431|issn=0020-1812}}</ref><ref>{{Cite web|url=http://rovarok.blog.hu/2014/10/20/a_poszmehek_termeszetes_ellensegei|title=A poszméhek természetes ellenségei|last=Dr. Sárospataki Miklós|date=|website=HATLÁBÚAK BIRODALMA. A rovarászok blogja.|archive-url=|archive-date=|access-date=2017-04-21}}</ref> Mites in this genus hibernate in the [[deutonymph]]al stage.<ref name=":2">{{Cite book|url=https://books.google.com/books?id=MDjfQwAACAAJ|title=Parasitid Mites Associated with Bumblebees in Alberta, Canada (Acarina, Parasitidae, Hymenoptera, Apidae)|last=Richards|first=Lynn A.|date=1976-01-01|publisher=University of Kansas|language=en}}</ref> In the tritonymph stage they can actively transfer from bumblebee to bumblebee from flowers, where they can survive up to 24 hours.<ref name=":1" /> After they arrive in a bumblebee nest, they will [[Moulting|moult]] into adults.<ref name=":0" /><ref name=":2" /><ref>{{Cite book|title=Mites|last=Eickwort|first=George C.|date=1994-01-01|publisher=Springer US|isbn=9781461360124|editor-last=Houck|editor-first=Marilyn A.|pages=218–251|language=en|doi=10.1007/978-1-4615-2389-5_9|chapter = Evolution and Life-History Patterns of Mites Associated with Bees}}</ref> Whilst it is not known what factors trigger the mite to molt, in laboratory conditions ''P. fucorum'' were found to moult after eating fresh pollen, although overall moulting success was low.<ref name=":0" /> They are [[Kleptoparasitism|kleptoparasitic]] or neutral to beneficial, depending on life stage; females and deutonymphs feed on provisioned pollen, while other stages are predators of small arthropods.<ref name=":3">{{Cite web|url=http://idtools.org/id/mites/beemites/factsheet.php?name=15277|title=Parasitellus|last=Klimov, P.B., B. OConnor, R. Ochoa, G.R. Bauchan, J. Scher.|date=2016|website=Bee Mite ID: Bee-Associated Mite Genera of the World.|publisher=USDA APHIS Identification Technology Program (ITP)|location=Fort Collins, CO.|archive-url=|archive-date=|access-date=2017-05-03}} {{PD-notice}}</ref>


== Taxonomy and identification ==
== Taxonomy and identification ==
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Species of ''Parasitellus'' are not specific to a particular bumble bee species, with different mite species often co-occurring in a single ''Bombus'' nest or co-dispersing on a single bee individual.
Species of ''Parasitellus'' are not specific to a particular bumble bee species, with different mite species often co-occurring in a single ''Bombus'' nest or co-dispersing on a single bee individual.


The nature of the association between ''Parasitellus'' and its bumble bee hosts is a balance between being harmful and beneficial. In ''Parasitellus fucorum'', males, larvae, protonymphs, and possibly deutonymphs, have been found to be predatory or [[oophagous]] (egg-feeding) on microarthropods in bumble bee nests and thus, beneficial to the bees, while adult females and deutonymphs preferentially feed on the provisioned pollen and are harmful to the host.<ref name=":4">Koulianos, S. & H. H. Schwarz. 1999. Reproduction, development and diet of Parasitellus fucorum (Mesostigmata : Parasitidae), a mite associated with bumblebees (Hymenoptera: Apidae). Journal of Zoology.248: 267-269.</ref>
In ''Parasitellus fucorum'', males, larvae, protonymphs, and possibly deutonymphs, have been found to be predatory or [[oophagous]] (egg-feeding) on microarthropods in bumble bee nests and thus, beneficial to the bees, while adult females and deutonymphs preferentially feed on the provisioned pollen.<ref name=":4">Koulianos, S. & H. H. Schwarz. 1999. Reproduction, development and diet of Parasitellus fucorum (Mesostigmata : Parasitidae), a mite associated with bumblebees (Hymenoptera: Apidae). Journal of Zoology.248: 267-269.</ref>


Mites feed on the upper layer of pollen grains (nectar coating and pollenkitt), without damaging them otherwise. Pollen grains processed in this way lost their normal bright yellow or blue color and became pale and more translucent.<ref name=":4" />
Mites feed on the upper layer of pollen grains (nectar coating and pollenkitt), without damaging them otherwise. Pollen grains processed in this way lost their normal bright yellow or blue color and became pale and more translucent.<ref name=":4" />

Revision as of 20:01, 18 April 2024

Parasitellus
Parasitellus talparum specimen, dorsal view
Scientific classification
Kingdom:
Animalia
Phylum:
Arthropoda
Class:
Arachnida
Subclass:
Acari
Order:
Mesostigmata
Family:
Parasitidae
Genus:
Parasitellus

Willmann, 1939

Parasitellus (formerly Parasitus[1]) is a genus of mites in the family Parasitidae[2] which are obligatory parasites of bumblebees.[1][3] These mites can be found clinging to the carapace, sometimes in large numbers.[4][5] Mites in this genus hibernate in the deutonymphal stage.[6] In the tritonymph stage they can actively transfer from bumblebee to bumblebee from flowers, where they can survive up to 24 hours.[4] After they arrive in a bumblebee nest, they will moult into adults.[1][6][7] Whilst it is not known what factors trigger the mite to molt, in laboratory conditions P. fucorum were found to moult after eating fresh pollen, although overall moulting success was low.[1] They are kleptoparasitic or neutral to beneficial, depending on life stage; females and deutonymphs feed on provisioned pollen, while other stages are predators of small arthropods.[8]

Taxonomy and identification

Species

Diagnosis

Ventral view with opisthogastric region containing more than 40 pairs of setae shown.

Adult and deutonymph: In both adults and deutonymphs, opisthogastric region has more than 40 pairs of setae (see figure). In all other species of Parasitidae, opisthogastric region has fewer than 30 pairs of setae.[8]

Species identification

A key to species from North America is available from the bee-associated mites website. A key to species from the British Isles is available in Hyatt, 1980.[9]

Similar genera

Parasitellus can be distinguished from all other genera of Parasitidae by the opisthogastric region having more than 40 pairs of setae. This region has fewer than 30 pairs of setae in other genera of Parasitidae.

Distribution

Common in the Holarctic region (North America, Europe, Northern Asia, and China). Also reported in the Neotropical region (Argentina and Mexico).[8]

Hosts

Bee hosts

All species of the genus Parasitellus are obligatory associates of bumble bees (Bombus). Several occasional records are from honey bee (Apis) hives and burrows of small mammals (which are preferential sites for bumble bee nests).[8]

Host association level

permanent

Host associations, feeding, and dispersal

  • All stages live in nests of bumble bees (Bombus spp.), where females and deutonymphs feed on pollen and other stages feed on small arthropods.
  • Mite deutonymphs disperse and overwinter on adult queen bees. Phoresy on workers and males of bumble bees or cuckoo bumble bees is also documented.

Biology

All species of Parasitellus inhabit nests of bumble bees (Bombus). Mite deutonymphs are commonly phoretic on adult bumble bees or cuckoo bumble bees. Phoretic mites prefer queens to other castes (workers and males), since bumble bee colonies are annual and only young queens overwinter. Mites dispersing on workers and males may try to switch to queens later, either during copulation or on flowers, where bumble bees forage.[10][11]

Species of Parasitellus are not specific to a particular bumble bee species, with different mite species often co-occurring in a single Bombus nest or co-dispersing on a single bee individual.

In Parasitellus fucorum, males, larvae, protonymphs, and possibly deutonymphs, have been found to be predatory or oophagous (egg-feeding) on microarthropods in bumble bee nests and thus, beneficial to the bees, while adult females and deutonymphs preferentially feed on the provisioned pollen.[12]

Mites feed on the upper layer of pollen grains (nectar coating and pollenkitt), without damaging them otherwise. Pollen grains processed in this way lost their normal bright yellow or blue color and became pale and more translucent.[12]

References

  1. ^ a b c d Koulianos, S.; Schwarz, H. H. (1999-06-01). "Reproduction, development and diet of Parasitellus fucorum (Mesostigmata: Parasitidae), a mite associated with bumblebees (Hymenoptera: Apidae)". Journal of Zoology. 248 (2): 267–269. doi:10.1111/j.1469-7998.1999.tb01202.x. ISSN 1469-7998.
  2. ^ Joel Hallan (ed.). "Parasitidae Species Listing". Biology Catalog. Texas A&M University. Archived from the original on 7 August 2010. Retrieved September 4, 2010.
  3. ^ Rożej, Elżbieta; Witaliński, Wojciech; Szentgyörgyi, Hajnalka; Wantuch, Marta; Moroń, Dawid; Woyciechowski, Michal (2017-04-21). "Mite species inhabiting commercial bumblebee (Bombus terrestris) nests in Polish greenhouses". Experimental & Applied Acarology. 56 (3): 271–282. doi:10.1007/s10493-012-9510-8. ISSN 0168-8162. PMC 3273685. PMID 22270110.
  4. ^ a b Schwarz, H.H.; Huck, K. (1997-11-01). "Phoretic mites use flowers to transfer between foraging bumblebees". Insectes Sociaux. 44 (4): 303–310. doi:10.1007/s000400050051. ISSN 0020-1812. S2CID 36137431.
  5. ^ Dr. Sárospataki Miklós. "A poszméhek természetes ellenségei". HATLÁBÚAK BIRODALMA. A rovarászok blogja. Retrieved 2017-04-21.
  6. ^ a b Richards, Lynn A. (1976-01-01). Parasitid Mites Associated with Bumblebees in Alberta, Canada (Acarina, Parasitidae, Hymenoptera, Apidae). University of Kansas.
  7. ^ Eickwort, George C. (1994-01-01). "Evolution and Life-History Patterns of Mites Associated with Bees". In Houck, Marilyn A. (ed.). Mites. Springer US. pp. 218–251. doi:10.1007/978-1-4615-2389-5_9. ISBN 9781461360124.
  8. ^ a b c d Klimov, P.B., B. OConnor, R. Ochoa, G.R. Bauchan, J. Scher. (2016). "Parasitellus". Bee Mite ID: Bee-Associated Mite Genera of the World. Fort Collins, CO.: USDA APHIS Identification Technology Program (ITP). Retrieved 2017-05-03.{{cite web}}: CS1 maint: multiple names: authors list (link) Public Domain This article incorporates text from this source, which is in the public domain.
  9. ^ Hyatt, K. H. 1980. Mites of the subfamily Parasitinae (Mesostigmata: Parasitidae) in the British Isles. Bulletin of the British Museum (Natural History) Zoology. 38: 237-378.
  10. ^ Schwarz, H. H. & K. Huck. 1997. Phoretic mites use flowers to transfer between foraging bumblebees. Insectes Sociaux. 44: 303-310.
  11. ^ Huck, K., H. H. Schwarz & P. Schmid-Hempel. 1998. Host choice in the phoretic mite Parasitellus fucorum (Mesostigmata: Parasitidae): which bumblebee caste is the best? Oecologia.115: 385-390.
  12. ^ a b Koulianos, S. & H. H. Schwarz. 1999. Reproduction, development and diet of Parasitellus fucorum (Mesostigmata : Parasitidae), a mite associated with bumblebees (Hymenoptera: Apidae). Journal of Zoology.248: 267-269.
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