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Öğe A faunistic survey of bdelloid rotifers in Turkey(Max Kasparek Verlag, 2009) Kaya, Murat; Herniou, Elisabeth A.; Barraclough, Timothy G.; Fontaneto, DiegoMost of the taxonomic and faunistic work on bdelloid rotifers has been carried out inÖğe Cryptic diversity in the genus Adineta Hudson & Gosse, 1886 (Rotifera: Bdelloidea: Adinetidae): a DNA taxonomy approach(Springer, 2011) Fontaneto, Diego; Iakovenko, Nataliia; Eyres, Isobel; Kaya, Murat; Wyman, Michael; Barraclough, Timothy GilesCryptic species are continuously discovered in rotifers using different methods to delineate these units of diversity. DNA taxonomy is the most effective method taxonomists have to untie potential cryptic taxa. Here, we estimate hidden diversity in a genus of bdelloid rotifers, Adineta. We analyse cryptic diversity using a coalescent approach to infer evolutionarily significant units from a phylogenetic tree obtained from cytochrome oxidase I sequences. Cryptic diversity was measured for eight traditional species and from several additional undetermined populations. Taxonomic inflation of up to 36 taxa was found in A. vaga from DNA taxonomy. As observed in other microscopic organisms, cryptic taxa within each traditional species were not geographically isolated, but had significantly narrower ecological niches than expected by chance alone.Öğe Extreme levels of hidden diversity in microscopic animals (Rotifera) revealed by DNA taxonomy(Academic Press, 2009) Fontaneto, Diego; Kaya, Murat; Herniou, Elisabeth A.; Barraclough, Timothy G.Knowledge and estimates of species richness at all scales are biased both by our understanding of the evolutionary processes shaping diversity and by the methods used to delineate the basic units of diversity. DNA taxonomy shows that diversity may be underestimated by traditional taxonomy, especially for microscopic animals. The effects of such hidden diversity are usually overlooked in ecological studies. Here, we estimate hidden diversity in bdelloid rotifers, a group of microscopic animals. We analyse cryptic diversity using a coalescent approach to infer taxonomical units from phylogenetic trees. Cryptic diversity was measured for eight traditional species of bdelloid rotifers and the results compared to that of the monogonont rotifer Brachionus plicatilis species complex, which is well studied and for which cross-mating experiments have been performed to explicitly define some of the species boundaries. A taxonomic inflation of up to 34 potential cryptic taxa was found in bdelloids. Cryptic taxa within each traditional species may be spatially isolated, but do not have narrower ecological niches. The species deemed as generalists exhibit the highest cryptic diversity. Cryptic diversity based on molecular characterization is commonly found in animals; nevertheless, the amount of cryptic diversity in bdelloids is much higher than in other groups analysed so far, maybe because of their peculiar parthenogenetic reproduction, other than microscopic size. We discuss this hypothesis in the light of the available empirical evidence from other groups of microscopic invertebrates, such as tardigrades and mites, which share size, habitat heterogeneity, potential for dispersal, and/or parthenogenetic reproduction. (C) 2009 Elsevier Inc. All rights reserved.Öğe Survey of moss-dwelling bdelloid rotifers from middle Arctic Spitsbergen (Svalbard)(SPRINGER, 2010) Kaya, Murat; De Smet, Willem H.; Fontaneto, DiegoA survey of bdelloid rotifers from moss and lichen samples collected in the middle Arctic tundra subzone of Spitsbergen (Svalbard) revealed an unexpected high species richness of 52 taxa, of which 18 fully identified species are new for the region. About one-fifth of the European bdelloid species are present. Moisture regime and geographic localization of the moss appeared the most important ecological features driving differences in species composition between samples.Öğe Temperature and salinity as interacting drivers of species richness of planktonic rotifers in Turkish continental waters(PAGEPRESS PUBL, 2010) Kaya, Murat; Fontaneto, Diego; Segers, Hendrik; Altındağ, AhmetSalinity and temperature are known to be important factors driving species richness and species composition in inland waters, but their effect and interaction are still not completely clear. In this paper we examine their interaction on species richness and species composition of planktonic rotifers in Turkey, controlling for other confounding effects. Eighty-four species of Rotifera belonging to 32 genera were recorded from eight sampling sites in Develi Plain (Middle Anatolia, Kayseri, Turkey), collecting repeated samples in different seasons (April, July, October and December 2007), and measuring water parameters (electrical conductivity, pH and temperature). Generalised Linear Models and Mixed Effect Models were used to disentangle the effect of the environmental parameters on species richness and composition. Temperature positively affected species richness as expected from previous studies. Whereas this effect was clear in the freshwater habitats (less than 1000 mu S cm(-1)), it was not observed at all at higher salinities. Surprisingly, species richness significantly increased with salinity in subsaline waters between 1000 and 6000 mu S cm(-1). Species composition varied among sampling sites (accounting for 36.2% of total variation), but no other factors were found to be involved.
