Evolution in congeneric monogeneans: from diversification to
community structure

a 2013

Evolution in congeneric monogeneans: from diversification to community structure

VETEŠNÍKOVÁ ŠIMKOVÁ, Andrea

Základní údaje

Originální název

Evolution in congeneric monogeneans: from diversification to community structure

Autoři

VETEŠNÍKOVÁ ŠIMKOVÁ, Andrea (203 Česká republika, garant, domácí)

Vydání

7 th International Symposium on Monogenea, 2013

Další údaje

Jazyk

angličtina

Typ výsledku

Konferenční abstrakt

Obor

10600 1.6 Biological sciences

Stát vydavatele

Brazílie

Utajení

není předmětem státního či obchodního tajemství

Kód RIV

RIV/00216224:14310/13:00066963

Organizační jednotka

Přírodovědecká fakulta

Klíčová slova anglicky

monogenea; communitiy; host specificity; evolution; phylogeny

Změněno: 3. 3. 2014 15:26, prof. RNDr. Andrea Vetešníková Šimková, PhD.

Anotace

V originále

Among monogeneans, there are several highly diversified genera. Majority of monogenean congeneric species exhibit a certain degree of host specificity. There are the evidences that extremely high numbers of congeneric species co-occur in one host species. Such congeneric species usually possess the interspecific variability in attachment organ and occupy the preferred niches. I focus on several aspects of evolution in congeneric monogeneans. The process of speciation has been recently investigated in several congeneric monogeneans suggesting that cospeciation does not play an important role in diversification of congeneric monogeneans. Cophylogenetic analyses using congeneric Dactylogyridae parasitizing freshwater fish revealed that these parasite groups speciated by intrahost duplication followed by host switching. Host switching was recognized as coevolutionary event in speciation of gill congeneric monogeneans parasitizing marine fish or in the case of viviparous Gyrodactylus. The analyses of evolution of host specificity in congeneric Dactylogyridae indicated that being a host specific represents the ancestral state of host specificity. The evolution of preferred niche was investigated in Dactylogyrus species using the mapping of preferred niche positions into parasite phylogenetic reconstruction. The species forming monophyletic groups and parasitizing one host species, resulting from intra-host speciation, differ in at least one of the niche parameters. The communities of congeneric monogeneans are generally considered as isolationist. The niches of many congeneric monogeneans occupying the same fish species are segregated which is explained by past competition, specialization and/or mating contacts hypotheses. The congeners possessing the similar haptor morphology tend to occupy the closely situated niche positions within host, however, differentiate in the morphology of their reproductive organs (i.e. reinforcement of reproductive isolation between congeners).

Návaznosti

GBP505/12/G112, projekt VaV

Název: ECIP - Evropské centrum ichtyoparazitologie

Investor: Grantová agentura ČR, ECIP - Evropské centrum ichtyoparazitologie

Citovat

VETEŠNÍKOVÁ ŠIMKOVÁ, Andrea. Evolution in congeneric monogeneans: from diversification to community structure. In 7 th International Symposium on Monogenea. 2013.

@proceedings{1168175,
   author = {Vetešníková Šimková, Andrea},
   booktitle = {7 th International Symposium on Monogenea},
   keywords = {monogenea; communitiy; host specificity; evolution; phylogeny},
   language = {eng},
   title = {Evolution in congeneric monogeneans: from diversification to community structure},
   year = {2013}
}

TY  - CONF
ID  - 1168175
AU  - Vetešníková Šimková, Andrea
PY  - 2013
TI  - Evolution in congeneric monogeneans: from diversification to community structure
KW  - monogenea
KW  - communitiy
KW  - host specificity
KW  - evolution
KW  - phylogeny
N2  - Among monogeneans, there are several highly diversified genera. Majority of monogenean congeneric species exhibit a certain degree of host specificity. There are the evidences that extremely high numbers of congeneric species co-occur in one host species. Such congeneric species usually possess the interspecific variability in attachment organ and occupy the preferred niches. I focus on several aspects of evolution in congeneric monogeneans. The process of speciation has been recently investigated in several congeneric monogeneans suggesting that cospeciation does not play an important role in diversification of congeneric monogeneans. Cophylogenetic analyses using congeneric Dactylogyridae parasitizing freshwater fish revealed that these parasite groups speciated by intrahost duplication followed by host switching. Host switching was recognized as coevolutionary event in speciation of gill congeneric monogeneans parasitizing marine fish or in the case of viviparous Gyrodactylus. The analyses of evolution of host specificity in congeneric Dactylogyridae indicated that being a host specific represents the ancestral state of host specificity. The evolution of preferred niche was investigated in Dactylogyrus species using the mapping of preferred niche positions into parasite phylogenetic reconstruction. The species forming monophyletic groups and parasitizing one host species, resulting from intra-host speciation, differ in at least one of the niche parameters. The communities of congeneric monogeneans are generally considered as isolationist. The niches of many congeneric monogeneans occupying the same fish species are segregated which is explained by past competition, specialization and/or mating contacts hypotheses. The congeners possessing the similar haptor morphology tend to occupy the closely situated niche positions within host, however, differentiate in the morphology of their reproductive organs (i.e. reinforcement of reproductive isolation between congeners).
ER  -

VETEŠNÍKOVÁ ŠIMKOVÁ, Andrea. Evolution in congeneric monogeneans: from diversification to community structure. In \textit{7 th International Symposium on Monogenea}. 2013.

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