Weak link between dispersal and parasite community
differentiation or immunogenetic divergence in two sympatric
cichlid fishes

J 2016

Weak link between dispersal and parasite community differentiation or immunogenetic divergence in two sympatric cichlid fishes

HABLUTZEL, Pascal, Arnout GREGOIR, Maarten Pieterjan VANHOVE, Filip VOLCKAERT, Joost RAEYMAEKERS et. al.

Basic information

Original name

Weak link between dispersal and parasite community differentiation or immunogenetic divergence in two sympatric cichlid fishes

Authors

HABLUTZEL, Pascal (756 Switzerland), Arnout GREGOIR (56 Belgium), Maarten Pieterjan VANHOVE (56 Belgium, guarantor, belonging to the institution), Filip VOLCKAERT (56 Belgium) and Joost RAEYMAEKERS (56 Belgium)

Edition

Molecular Ecology, Blackwell Publishing Ltd. 2016, 0962-1083

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

Impact factor

Impact factor: 6.086

RIV identification code

RIV/00216224:14310/16:00088659

Organization unit

Faculty of Science

DOI

http://dx.doi.org/10.1111/mec.13833

UT WoS

000386353200014

Keywords in English

adaptation; ecological genetics; fish; host-parasite interactions; population ecology; speciation

Abstract

V originále

Geographical isolation, habitat variation and trophic specialization have contributed to a large extent to the astonishing diversity of cichlid fishes in the Great East African lakes. Because parasite communities often vary across space and environments, parasites can accompany and potentially enhance cichlid species diversification. However, host dispersal may reduce opportunities for parasite-driven evolution by homogenizing parasite communities and allele frequencies of immunity genes. To test for the relationships between parasite community variation, host dispersal and parasite-induced host evolution, we studied two sympatric cichlid species with contrasting dispersal capacities along the shores of southern Lake Tanganyika. Whereas the philopatric Tropheus moorii evolved into several genetically differentiated colour morphs, Simochromis diagramma is phenotypically rather uniform across its distribution range and shows only weak population structure. Populations of both species were infected with divergent parasite communities and harbour differentiated variant pools of an important set of immune genes, the major histocompatibility complex (MHC). The overall extent of geographical variation of parasites and MHC genes was similar between host species. This indicates that immunogenetic divergence among populations of Lake Tanganyika cichlids can occur even in species that are strongly dispersing. However, because this also includes species that are phenotypically uniform, parasite-induced evolution may not represent a key factor underlying species diversification in this system.

Links

GBP505/12/G112, research and development project

Name: ECIP - Evropské centrum ichtyoparazitologie

Investor: Czech Science Foundation

Citovat

HABLUTZEL, Pascal, Arnout GREGOIR, Maarten Pieterjan VANHOVE, Filip VOLCKAERT and Joost RAEYMAEKERS. Weak link between dispersal and parasite community differentiation or immunogenetic divergence in two sympatric cichlid fishes. Molecular Ecology. Blackwell Publishing Ltd., 2016, vol. 25, No 21, p. 5451-5466. ISSN 0962-1083. Available from: https://dx.doi.org/10.1111/mec.13833.

@article{1372020,
   author = {Hablutzel, Pascal and Gregoir, Arnout and Vanhove, Maarten Pieterjan and Volckaert, Filip and Raeymaekers, Joost},
   article_number = {21},
   doi = {http://dx.doi.org/10.1111/mec.13833},
   keywords = {adaptation; ecological genetics; fish; host-parasite interactions; population ecology; speciation},
   language = {eng},
   issn = {0962-1083},
   journal = {Molecular Ecology},
   title = {Weak link between dispersal and parasite community differentiation or immunogenetic divergence in two sympatric cichlid fishes},
   volume = {25},
   year = {2016}
}

TY  - JOUR
ID  - 1372020
AU  - Hablutzel, Pascal - Gregoir, Arnout - Vanhove, Maarten Pieterjan - Volckaert, Filip - Raeymaekers, Joost
PY  - 2016
TI  - Weak link between dispersal and parasite community differentiation or immunogenetic divergence in two sympatric cichlid fishes
JF  - Molecular Ecology
VL  - 25
IS  - 21
SP  - 5451-5466
EP  - 5451-5466
PB  - Blackwell Publishing Ltd.
SN  - 09621083
KW  - adaptation
KW  - ecological genetics
KW  - fish
KW  - host-parasite interactions
KW  - population ecology
KW  - speciation
N2  - Geographical isolation, habitat variation and trophic specialization have contributed to a large extent to the astonishing diversity of cichlid fishes in the Great East African lakes. Because parasite communities often vary across space and environments, parasites can accompany and potentially enhance cichlid species diversification. However, host dispersal may reduce opportunities for parasite-driven evolution by homogenizing parasite communities and allele frequencies of immunity genes. To test for the relationships between parasite community variation, host dispersal and parasite-induced host evolution, we studied two sympatric cichlid species with contrasting dispersal capacities along the shores of southern Lake Tanganyika. Whereas the philopatric Tropheus moorii evolved into several genetically differentiated colour morphs, Simochromis diagramma is phenotypically rather uniform across its distribution range and shows only weak population structure. Populations of both species were infected with divergent parasite communities and harbour differentiated variant pools of an important set of immune genes, the major histocompatibility complex (MHC). The overall extent of geographical variation of parasites and MHC genes was similar between host species. This indicates that immunogenetic divergence among populations of Lake Tanganyika cichlids can occur even in species that are strongly dispersing. However, because this also includes species that are phenotypically uniform, parasite-induced evolution may not represent a key factor underlying species diversification in this system.
ER  -

HABLUTZEL, Pascal, Arnout GREGOIR, Maarten Pieterjan VANHOVE, Filip VOLCKAERT and Joost RAEYMAEKERS. Weak link between dispersal and parasite community differentiation or immunogenetic divergence in two sympatric cichlid fishes. \textit{Molecular Ecology}. Blackwell Publishing Ltd., 2016, vol.~25, No~21, p.~5451-5466. ISSN~0962-1083. Available from: https://dx.doi.org/10.1111/mec.13833.

Detailed Information on Publication Record