Dataset Information

Genetic and morphological variation of metacercariae of Microphallus piriformes (Trematoda, Microphallidae): Effects of paraxenia and geographic location.

ABSTRACT: Host organism offers an environment for a parasite, and this environment is heterogenous within the host, variable among individual as well as between the hosts, and changing during the host's lifetime. This heterogeneity may act as a prerequisite for parasite species divergence. Intraspecific variability related to a certain type of heterogeneity may indicate an initial stage of speciation, and thus poses an evolutionary importance. Here we analyzed genetic and morphologic variation of trematode metacercariae of Microphallus piriformes (Trematoda, Microphallidae). Genetic variability of trematodes was assessed from sequences of cytochrome c oxidase subunit 1 (COI) and internal transcribed spacer region (ITS-1). Morphological variation of metacercarial body shape was for the first time analyzed using geometric morphometrics. Parasites from the White Sea and the Barents Sea coasts demonstrated partial genetic divergence (according to COI sequence analysis) and had significantly different body shape. Neither genetic nor morphological variation of metacercariae was related to intermediate host species. We discuss possible causes of the observed genetic divergence of parasite populations in different geographic regions.

SUBMITTER: Repkin EA

PROVIDER: S-EPMC7078125 | biostudies-literature | 2020 Apr

REPOSITORIES: biostudies-literature

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Genetic and morphological variation of metacercariae of <i>Microphallus piriformes</i> (Trematoda, Microphallidae): Effects of paraxenia and geographic location.

Repkin Egor A EA Maltseva Arina L AL Varfolomeeva Marina A MA Aianka Roman V RV Mikhailova Natalia A NA Granovitch Andrei I AI

International journal for parasitology. Parasites and wildlife 20200226

Host organism offers an environment for a parasite, and this environment is heterogenous within the host, variable among individual as well as between the hosts, and changing during the host's lifetime. This heterogeneity may act as a prerequisite for parasite species divergence. Intraspecific variability related to a certain type of heterogeneity may indicate an initial stage of speciation, and thus poses an evolutionary importance. Here we analyzed genetic and morphologic variation of trematod ...[more]

PMID: 32195109

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Dataset Information

Genetic and morphological variation of metacercariae of Microphallus piriformes (Trematoda, Microphallidae): Effects of paraxenia and geographic location.

Publications

Genetic and morphological variation of metacercariae of <i>Microphallus piriformes</i> (Trematoda, Microphallidae): Effects of paraxenia and geographic location.

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