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Full-Text Articles in Life Sciences
Profundal Oligochaete Assemblages In Palaearctic Lakes, Tarmo Timm
Profundal Oligochaete Assemblages In Palaearctic Lakes, Tarmo Timm
Turkish Journal of Zoology
The profundal oligochaete fauna is mostly formed of species present also in shallower waters. Endemic taxa have developed only in ancient rift lakes like Lake Baikal. "Common" lakes, mostly of glacial or volcanic origin, are too ephemeral for speciation. In the profundal of larger European oligotrophic lakes, there can occur about 10 tubificid and lumbriculid species. With a decline in dissolved oxygen in water, only 1-2 of them will remain, Tubifex tubifex often being the last survivor. In eutrophic lakes, Potamothrix hammoniensis is the climax species. In the Far East, the profundal is also inhabited by a small assortment of …
A General Review Of Parasitic Annelida (Hirudinea) Recorded From Different Habitats And Hosts In Turkey, Nai̇me Arslan, Ahmet Öktener
A General Review Of Parasitic Annelida (Hirudinea) Recorded From Different Habitats And Hosts In Turkey, Nai̇me Arslan, Ahmet Öktener
Turkish Journal of Zoology
To date, parasitic leech species have not been intensively studied in Turkey, and studies on the leeches of Turkey have concentrated primarily on lakes. According to literature data, a total of 13 parasitic leech species (3 species from marine fish, 8 species from freshwater fish, 1 species from brackish water fish, and 1 species from aquarium fish) have been recorded in different parts of Turkey. Interest in this group has increased during the last 2 decades, but a large part of the Turkish freshwater habitats remains to be studied with regard to the parasitic leech species. In this study, information …
Microtaxonomy Of Fragmenting Enchytraeus Species Using Molecular Markers, With A Comment On Species Complexes In Enchytraeids, Rut Collado, Eva Hass-Cordes, Ruediger Schmelz
Microtaxonomy Of Fragmenting Enchytraeus Species Using Molecular Markers, With A Comment On Species Complexes In Enchytraeids, Rut Collado, Eva Hass-Cordes, Ruediger Schmelz
Turkish Journal of Zoology
Populations of Enchytraeus that reproduce by fragmentation are distributed worldwide, but their species-level taxonomy is unresolved because morphological differences are inconclusive. Therefore, we compared the isozyme and RAPD-PCR patterns of 5 populations of fragmenting enchytraeids from widely distant localities (Japan, Iran, Greece, and Brazil). Among these populations, 3 were identified (E. japonensis, E. bigeminus, and E. dudichi) and 2 were unidentified. Multiple isozyme bands suggested polyploidy in all investigated populations. In all RAPD-PCR algorithms except 1, the fragmenting group formed a cluster separate from 2 nonfragmenting Enchytraeus species. All 5 populations were clearly separable on the levels of protein and …