title: Coexistence and genetic variability of Contracaecum rudolphii A and Contracaecum rudolphii B (Nematoda: Anisakidae) in cormorants, Phalacrocorax carbo sinensis, in the Baltic region.
abstract: Although numerous genetically isolated entities within Contracaecum rudolphii sensu lato are presently defined, information on the distribution and ecology of these groups is nonetheless in demand. In the present study, information based upon DNA sequence data (restriction analysis and sequencing of rDNA) on the distribution of the species C. rudolphii A and C. rudolphii B in the cormorant Phalacrocorax carbo sinensis from the Baltic region (Poland and Finland) is provided. These data corroborate previous work that identified C. rudolphii A in brackish water regions and C. rudolphii B in fresh water sites, although mixed infections also occur. The 2 species may inhabit the same host specimen. One rare heterozygote of the species was recorded.
authors.affiliation: Department of Tropical Parasitology, Institute of Maritime and Tropical Medicine, Medical University of Gdańsk, Poland.
authors.forename: Beata
authors.initials: B
authors.lastname: Szostakowska
authors.forename: Hans-Peter
authors.initials: HP
authors.lastname: Fagerholm
mesh_terms: D000818:Animals; D017191:Ascaridida Infections / Q000469:parasitology / Q000662:veterinary*; D001199:Ascaridoidea / Q000145:classification / Q000235:genetics / Q000502:physiology*; D001715:Bird Diseases / Q000469:parasitology*; D001717:Birds; D018509:DNA, Helminth / Q000737:chemistry / Q000302:isolation & purification; D004275:DNA, Ribosomal / Q000737:chemistry; D021903:DNA, Ribosomal Spacer / Q000737:chemistry; D005387:Finland; D005838:Genotype; D060106:Lakes; D008969:Molecular Sequence Data; D011044:Poland; D016133:Polymerase Chain Reaction / Q000662:veterinary; D011110:Polymorphism, Genetic; D012150:Polymorphism, Restriction Fragment Length; D012337:RNA, Ribosomal, 18S / Q000235:genetics; D012339:RNA, Ribosomal, 28S / Q000235:genetics; D015183:Restriction Mapping / Q000662:veterinary; D016415:Sequence Alignment / Q000662:veterinary; D017422:Sequence Analysis, DNA / Q000662:veterinary; D013270:Stomach / Q000469:parasitology
chemical_list: D018509:DNA, Helminth; D004275:DNA, Ribosomal; D021903:DNA, Ribosomal Spacer; D012337:RNA, Ribosomal, 18S; D012339:RNA, Ribosomal, 28S