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European Phyllodistomum (Digenea, Gorgoderidae) and phylogenetic affinities of Cercaria duplicata based on rDNA and karyotypes
This study supports the concept that only P. macrocotyle is a parasite of Dreissena polymorpha among the phyllodistomes and life cycle described for the type species P. folium and indicates a clear need for reconsideration of the knowledge on gorgoderid life cycles based on experimental studies and re‐evaluation of the validity of some nominal Phyllodistsomum species.
Host specificity, molecular phylogeny and morphological differences of Phyllodistomum pseudofolium Nybelin, 1926 and Phyllodistomum angulatum Linstow, 1907 (Trematoda: Gorgoderidae) with notes on…
- V. Stunžėnas, R. Petkevičiūtė, L. Poddubnaya, G. Stanevičiūtė, A. Zhokhov
- BiologyParasites & Vectors
- 6 June 2017
The results lead to the perception that macroevolutionary host switching in the genus Phyllodistomum is independent of host phylogeny, and strict host-specificity (oioxeny) for P. pseudofolium is suggested.
Pronounced karyological divergence of the North American congeners Sphaerium rhomboideum and S. occidentale (Bivalvia: Veneroida: Sphaeriidae)
Chromosome sets of two North American sphaeriid species, Sphaerium rhomboideum Say and S. occidentale Lewis, were studied and pronounced karyological divergence of congeners was revealed.
Polymorphism of the Sphaerium corneum (Bivalvia, Veneroida, Sphaeriidae) revealed by cytogenetic and sequence comparison: POLYMORPHIC S. CORNEUM
New perspectives in establishing species-specific characters for confident identification of Sphaerium species are opened and insights to the genetic intraspecific variability and possible mechanisms of speciation are provided.
Comparison of the developmental stages of some European allocreadiid trematode species and a clarification of their life-cycles based on ITS2 and 28S sequences
The results revealed the possible existence of a cryptic species complex within the nominal species B. l.
Phylogeny of Sphaerium solidum (Bivalvia) based on karyotype and sequences of 16S and ITS1 rDNA
- V. Stunžėnas, R. Petkevičiūtė, G. Stanevičiūtė
- BiologyCentral European Journal of Biology
- 1 February 2011
Comparative cytogenetic analysis disclosed that the chromosome morphology could be conserved in some sphaeriid species during speciation despite the fact that most other species in this family undergo radical karyotypic differentiation.
Cytogenetic and sequence comparison of adult Phyllodistomum (Digenea: Gorgoderidae) from the three-spined stickleback with larvae from two bivalves
Differences revealed in karyotype and rDNA sequences leads to the conclusion that the cercariaeum of P. folium sensu Sinitsin, 1905 could not be regarded as the larva of adult P.folium from three-spined stickleback and larvae from S. corneum represent developmental stages of the same species.
Differentiation of European freshwater bucephalids (Digenea: Bucephalidae) based on karyotypes and DNA sequences
Very close phylogenetic affinity between investigated species was revealed; the sequence difference between the two species of Rhipidocotyle Diesing, 1858 was comparable with intergeneric differences observed in comparisons of B. polymorphus with R. fennica.
Diversity and phylogenetic relationships of European species of Crepidostomum Braun, 1900 (Trematoda: Allocreadiidae) based on rDNA, with special reference to Crepidostomum oschmarini Zhokhov &…
- R. Petkevičiūtė, V. Stunžėnas, A. Zhokhov, L. Poddubnaya, G. Stanevičiūtė
- BiologyParasites & Vectors
- 28 September 2018
BackgroundWithin the genus Crepidostomum Braun, 1900, identification of species and taxonomic decisions made only on the basis of adult morphology have resulted in great problems associated with…
Phylogenetic relationships of some species of the family Echinostomatidae Odner, 1910 (Trematoda), inferred from nuclear rDNA sequences and karyological analysis
Results supported close phylogenetic relationships between Echinochasmus Dietz, 1909 and Stephanoprora Odhner, 1902 and showed higher dynamic of karyotype evolution provided by different chromosomal rearrangements including Robertsonian translocations and pericentric inversions than more stable karyotypes of digenean worms parasitizing lymnaeoid pulmonate snails.