The variability of MHC genes and parasite selection in hybrids
of common bream (Abramis brama) and roach (Rutilus rutilus)

k 2015

The variability of MHC genes and parasite selection in hybrids of common bream (Abramis brama) and roach (Rutilus rutilus)

STIERANDOVÁ, Soňa; Vadym KRASNOVYD; Lukáš VETEŠNÍK; Kristína CIVÁŇOVÁ; Andrea VETEŠNÍKOVÁ ŠIMKOVÁ et al.

Základní údaje

Originální název

The variability of MHC genes and parasite selection in hybrids of common bream (Abramis brama) and roach (Rutilus rutilus)

Název česky

Variabilita MHC genů a přítomnost parazitů u hybridů cejna (Abramis brama) a plotice (Rutilus rutilus)

Autoři

STIERANDOVÁ, Soňa; Vadym KRASNOVYD; Lukáš VETEŠNÍK; Kristína CIVÁŇOVÁ a Andrea VETEŠNÍKOVÁ ŠIMKOVÁ

Vydání

EUROPEAN CONGRESS OF ICHTHYOLOGY XV, 2015

Další údaje

Jazyk

angličtina

Typ výsledku

Prezentace na konferencích

Obor

10600 1.6 Biological sciences

Stát vydavatele

Portugalsko

Utajení

není předmětem státního či obchodního tajemství

Označené pro přenos do RIV

Ano

Kód RIV

RIV/00216224:14310/15:00081063

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova česky

MHC variabilita hybridi paraziti cejn plotice

Klíčová slova anglicky

MHC variability hybrids parasites common bream roach

Příznaky

Mezinárodní význam

Změněno: 27. 2. 2017 14:12, Vadym Krasnovyd, Ph.D.

Anotace

V originále

Hybridization is a common phenomenon reported in cyprinid fish. Depending on the extent of evolutionary divergence among hybridizing parental taxa, two hypotheses have been proposed: (1) the hybrids suffer from a breakdown of co-adapted genes (leading to decreasing the efficiency of the defence mechanisms linked to high parasite susceptibility) or (2) hybrids exhibit high vigour due of the heterosis effect which confers advantages to increased genetic diversity (this mechanism explain the success of hybrids). In our study, we focused on the hybridization of two non-congeneric cyprinid fish species – roach (Rutilus rutilus) and common bream (Abramis brama). Both fish species exhibit the different metazoan parasite species, especially host-specific ectoparasitic monogeneans. Hybrids were determined on the basis of morphological traits and using molecular markers (cyt b and several microsatellite loci). The aim of this study was to analyse the variability of major histocompatibility complex genes (MHC) of IIB class (including DAB1 and DAB 3 genes) and metazoan parasite infection in coexisting parental-hybrid system. We predict high parasite intensity and weakened immunity (i.e. impaired system of co-adaptation genes) in hybrids of two divergent species. For DAB1 marker, we identified only the homozygotes for common bream, and the homozygotes were more frequent than heterozygotes for roach and hybrids. For DAB3 marker, the similar proportion of both homozygotes and herozygotes was found for all fish categories. We found that each of the parental species is parasitized by host-specific parasites. Hybrids of both maternal origins were identified; however, the majority of them were of common bream maternal origin. Hybrids harbour high parasite species richness but the parasite abundance was lower in hybrids compared to parental species. Hybrids harbour all specific parasites of roach, but the presence of common bream-specific parasites in hybrids was restricted.

Návaznosti

GAP505/12/0375, projekt VaV

Název: Evolučně-imunitní a ekologické aspekty parazitace u hybridních a polyploidních kaprovitých ryb

Investor: Grantová agentura ČR, Evolučně-imunitní a ekologické aspekty parazitace u hybridních a polypoidních kaprovitých ryb

Citovat

STIERANDOVÁ, Soňa; Vadym KRASNOVYD; Lukáš VETEŠNÍK; Kristína CIVÁŇOVÁ a Andrea VETEŠNÍKOVÁ ŠIMKOVÁ. The variability of MHC genes and parasite selection in hybrids of common bream (Abramis brama) and roach (Rutilus rutilus). In EUROPEAN CONGRESS OF ICHTHYOLOGY XV. 2015.

@proceedings{1312593,
   author = {Stierandová, Soňa and Krasnovyd, Vadym and Vetešník, Lukáš and Civáňová, Kristína and Vetešníková Šimková, Andrea},
   booktitle = {EUROPEAN CONGRESS OF ICHTHYOLOGY XV},
   keywords = {MHC variability hybrids parasites common bream roach},
   language = {eng},
   title = {The variability of MHC genes and parasite selection in hybrids of common bream (Abramis brama) and roach (Rutilus rutilus)},
   year = {2015}
}

TY  - CONF
ID  - 1312593
AU  - Stierandová, Soňa - Krasnovyd, Vadym - Vetešník, Lukáš - Civáňová, Kristína - Vetešníková Šimková, Andrea
PY  - 2015
TI  - The variability of MHC genes and parasite selection in hybrids of common bream (Abramis brama) and roach (Rutilus rutilus)
KW  - MHC variability hybrids parasites common bream roach
N2  - Hybridization is a common phenomenon reported in cyprinid fish. Depending on the extent of evolutionary divergence among hybridizing parental taxa, two hypotheses have been proposed: (1) the hybrids suffer from a breakdown of co-adapted genes (leading to decreasing the efficiency of the defence mechanisms linked to high parasite susceptibility) or (2) hybrids exhibit high vigour due of the heterosis effect which confers advantages to increased genetic diversity (this mechanism explain the success of hybrids). In our study, we focused on the hybridization of two non-congeneric cyprinid fish species – roach (Rutilus rutilus) and common bream (Abramis brama). Both fish species exhibit the different metazoan parasite species, especially host-specific ectoparasitic monogeneans. Hybrids were determined on the basis of morphological traits and using molecular markers (cyt b and several microsatellite loci). The aim of this study was to analyse the variability of major histocompatibility complex genes (MHC) of IIB class (including DAB1 and DAB 3 genes) and metazoan parasite infection in coexisting parental-hybrid system. We predict high parasite intensity and weakened immunity (i.e. impaired system of co-adaptation genes) in hybrids of two divergent species. For DAB1 marker, we identified only the homozygotes for common bream, and the homozygotes were more frequent than heterozygotes for roach and hybrids. For DAB3 marker, the similar proportion of both homozygotes and herozygotes was found for all fish categories. We found that each of the parental species is parasitized by host-specific parasites. Hybrids of both maternal origins were identified; however, the majority of them were of common bream maternal origin. Hybrids harbour high parasite species richness but the parasite abundance was lower in hybrids compared to parental species. Hybrids harbour all specific parasites of roach, but the presence of common bream-specific parasites in hybrids was restricted.
ER  -

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