Association between louse abundance and MHC II supertypes in Galápagos mockingbirds
Jazyk angličtina Země Německo Médium print-electronic
Typ dokumentu časopisecké články
Grantová podpora
P506/12/P529
Grantová Agentura České Republiky
GAJU n. 048/2019/P
Jihočeská Univerzita v Českých Budějovicích
PubMed
32006226
DOI
10.1007/s00436-020-06617-3
PII: 10.1007/s00436-020-06617-3
Knihovny.cz E-zdroje
- Klíčová slova
- Arms race, Co-evolution, Ectoparasite, Immunity, Supertype,
- MeSH
- biologická evoluce MeSH
- MHC antigeny II. třídy genetika imunologie MeSH
- paraziti klasifikace izolace a purifikace MeSH
- Passeriformes imunologie parazitologie MeSH
- Phthiraptera klasifikace imunologie MeSH
- polymorfismus genetický genetika MeSH
- zavšivení imunologie MeSH
- zvířata MeSH
- Check Tag
- zvířata MeSH
- Publikační typ
- časopisecké články MeSH
- Názvy látek
- MHC antigeny II. třídy MeSH
Major histocompatibility complex class II (MHC II) is an essential molecule triggering the adaptive immune response by the presentation of pathogens to helper T cells. The association between individual MHC II variants and various parasites has become a frequent finding in studies of vertebrate populations. However, although bird ectoparasites have a significant effect on their host's fitness, and the host's immune system can regulate ectoparasitic infections, no study has yet investigated the association between MHC II polymorphism and ectoparasite infection in the populations of free-living birds. Here, we test whether an association exists between the abundance of a chewing louse (Myrsidea nesomimi) and MHC II polymorphism of its hosts, the Galápagos mockingbirds (Mimus). We have found that the presence of two MHC II supertypes (functionally differentiated clusters) was significantly associated with louse abundance. This pattern supports the theory that a co-evolutionary interaction stands behind the maintenance of MHC polymorphism. Moreover, we have found a positive correlation between louse abundance and heterophil/lymphocyte ratio (an indicator of immunological stress) that serves as an additional piece of evidence that ectoparasite burden is affected by immunological state of Galápagos mockingbirds.
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