PHYLOGENY OF VIVIPAROUS Gyrodactylus (MONOGENEA:
GYRODACTYLIDAE) REVEALS INSIGHTS ON HOST EVOLUTION,
BIOGEOGRAPHY ACROSS CONTINENTS, AND MORPHOLOGICAL ADAPTATIONS
IN THE NEARCTIC REGION

k 2025

PHYLOGENY OF VIVIPAROUS Gyrodactylus (MONOGENEA: GYRODACTYLIDAE) REVEALS INSIGHTS ON HOST EVOLUTION, BIOGEOGRAPHY ACROSS CONTINENTS, AND MORPHOLOGICAL ADAPTATIONS IN THE NEARCTIC REGION

RAHMOUNI, Chahrazed; Mária SEIFERTOVÁ a Andrea VETEŠNÍKOVÁ ŠIMKOVÁ

Základní údaje

Originální název

PHYLOGENY OF VIVIPAROUS Gyrodactylus (MONOGENEA: GYRODACTYLIDAE) REVEALS INSIGHTS ON HOST EVOLUTION, BIOGEOGRAPHY ACROSS CONTINENTS, AND MORPHOLOGICAL ADAPTATIONS IN THE NEARCTIC REGION

Autoři

RAHMOUNI, Chahrazed; Mária SEIFERTOVÁ a Andrea VETEŠNÍKOVÁ ŠIMKOVÁ

Vydání

XI International Symposium on Fish Parasites, Merida, Mexiko, 2025

Další údaje

Jazyk

angličtina

Typ výsledku

Prezentace na konferencích

Obor

10600 1.6 Biological sciences

Utajení

není předmětem státního či obchodního tajemství

Označené pro přenos do RIV

Ano

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

Freshwater fish; Nearctic region; parasites; Monogenea; phylogeny; morphology

Změněno: 2. 3. 2026 10:29, prof. RNDr. Andrea Vetešníková Šimková, PhD.

Anotace

V originále

Gyrodactylid monogeneans offer a unique perspective to study the evolutionary trajectories of their teleost hosts, providing invaluable insights into host-parasite coevolution, biogeography, and ecology. We employed phylogenetic reconstruction to elucidate the relationships among diverse lineages of Gyrodactylus spp. using ITS sequences. We aimed to uncover lineage diversification, dispersal patterns, historical biogeography, and morphological evolution based on taxonomically significant haptoral features and DNA sequences. Phylogenetic analysis revealed a paraphyletic origin of Nearctic Gyrodactylus indicating the historical connection of fish faunas between North America and Eurasia. These connections, driven by a combination of natural and anthropogenic processes, facilitated the exchange of fish species and contributed to the shared diversity of aquatic biota across continents. The close relationship between Gyrodactylus species infecting both freshwater and marine fish underscores the complex evolutionary dynamics and ecological versatility of these parasites. We observed a trend in the evolution of haptoral structures in Gyrodactylus spp., from relatively simple to more complex forms, in the Nearctic region. The haptoral sclerites of Gyrodactylus spp. displayed a spectrum of morphotypes, ranging from structures similar to those found in globally distributed Gyrodactylus species to configurations predominantly found in Nearctic lineages parasitizing Cypriniformes. Characteristic features of "Nearctic" morphotypes included a median knob in the ventral bar and plate-like membranes or additional filaments attached to the handles of the marginal hooks. The unique morphological features in Gyrodactylus species parasitizing North American cypriniforms reflects the interplay between host-parasite interactions, ecological factors, and historical contingencies shaping the evolutionary dynamics of these parasites in the region.

Návaznosti

LUAUS23080, projekt VaV

Název: Paraziti jako nový nástroj k odhalení původu a disperze sladkovodních ryb Severní Ameriky

Investor: Ministerstvo školství, mládeže a tělovýchovy ČR, Paraziti jako nový nástroj k odhalení původu a disperze sladkovodních ryb Severní Ameriky, INTER-ACTION (USA)

Citovat

RAHMOUNI, Chahrazed; Mária SEIFERTOVÁ a Andrea VETEŠNÍKOVÁ ŠIMKOVÁ. PHYLOGENY OF VIVIPAROUS Gyrodactylus (MONOGENEA: GYRODACTYLIDAE) REVEALS INSIGHTS ON HOST EVOLUTION, BIOGEOGRAPHY ACROSS CONTINENTS, AND MORPHOLOGICAL ADAPTATIONS IN THE NEARCTIC REGION. In XI International Symposium on Fish Parasites, Merida, Mexiko. 2025.

@proceedings{2557760,
   author = {Rahmouni, Chahrazed and Seifertová, Mária and Vetešníková Šimková, Andrea},
   booktitle = {XI International Symposium on Fish Parasites, Merida, Mexiko},
   keywords = {Freshwater fish; Nearctic region; parasites; Monogenea; phylogeny; morphology},
   language = {eng},
   title = {PHYLOGENY OF VIVIPAROUS Gyrodactylus (MONOGENEA: GYRODACTYLIDAE) REVEALS INSIGHTS ON HOST EVOLUTION, BIOGEOGRAPHY ACROSS CONTINENTS, AND MORPHOLOGICAL ADAPTATIONS IN THE NEARCTIC REGION},
   year = {2025}
}

TY  - CONF
ID  - 2557760
AU  - Rahmouni, Chahrazed - Seifertová, Mária - Vetešníková Šimková, Andrea
PY  - 2025
TI  - PHYLOGENY OF VIVIPAROUS Gyrodactylus (MONOGENEA: GYRODACTYLIDAE) REVEALS INSIGHTS ON HOST EVOLUTION, BIOGEOGRAPHY ACROSS CONTINENTS, AND MORPHOLOGICAL ADAPTATIONS IN THE NEARCTIC REGION
KW  - Freshwater fish
KW  - Nearctic region
KW  - parasites
KW  - Monogenea
KW  - phylogeny
KW  - morphology
N2  - Gyrodactylid monogeneans offer a unique perspective to study the evolutionary trajectories of their teleost hosts, providing invaluable insights into host-parasite coevolution, biogeography, and ecology. We employed phylogenetic reconstruction to elucidate the relationships among diverse lineages of Gyrodactylus spp. using ITS sequences. We aimed to uncover lineage diversification, dispersal patterns, historical biogeography, and morphological evolution based on taxonomically significant haptoral features and DNA sequences. Phylogenetic analysis revealed a paraphyletic origin of Nearctic Gyrodactylus indicating the historical connection of fish faunas between North America and Eurasia. These connections, driven by a combination of natural and anthropogenic processes, facilitated the exchange of fish species and contributed to the shared diversity of aquatic biota across continents. The close relationship between Gyrodactylus species infecting both freshwater and marine fish underscores the complex evolutionary dynamics and ecological versatility of these parasites. We observed a trend in the evolution of haptoral structures in Gyrodactylus spp., from relatively simple to more complex forms, in the Nearctic region. The haptoral sclerites of Gyrodactylus spp. displayed a spectrum of morphotypes, ranging from structures similar to those found in globally distributed Gyrodactylus species to configurations predominantly found in Nearctic lineages parasitizing Cypriniformes. Characteristic features of "Nearctic" morphotypes included a median knob in the ventral bar and plate-like membranes or additional filaments attached to the handles of the marginal hooks. The unique morphological features in Gyrodactylus species parasitizing North American cypriniforms reflects the interplay between host-parasite interactions, ecological factors, and historical contingencies shaping the evolutionary dynamics of these parasites in the region.
ER  -

RAHMOUNI, Chahrazed; Mária SEIFERTOVÁ a Andrea VETEŠNÍKOVÁ ŠIMKOVÁ. PHYLOGENY OF VIVIPAROUS Gyrodactylus (MONOGENEA: GYRODACTYLIDAE) REVEALS INSIGHTS ON HOST EVOLUTION, BIOGEOGRAPHY ACROSS CONTINENTS, AND MORPHOLOGICAL ADAPTATIONS IN THE NEARCTIC REGION. In \textit{XI International Symposium on Fish Parasites, Merida, Mexiko}. 2025.

Přehled o publikaci