| Abstract | The occurrence of members of the highly diverse Daphnia longispina complex in Southern and Central Asian high-mountain lakes has been recognized for more than a century. Until now, however, no molecular data have been available for these populations inhabiting the "Roof of the World." Here, we present the first identification for D. gr. longispina from that region based on a molecular phylogeny. Our findings show that alpine lakes in the Pamir and Himalaya mountains host populations of widespread species of the complex, for which these are the highest known localities. A spineless morph from the Himalaya region, previously labeled as D. longispina var. aspina, was clustering tightly with D. dentifera, while a population from the Pamir mountain range was grouped with D. longispina. In addition, we analyzed ecological data available for lakes in the Khumbu region (Himalaya) to investigate ecological preferences of non-pigmented D. gr. longispina. The identified factors can at least partly be related to avoidance of high UV conditions by this species. We conclude that the widespread species D. dentifera and D. longispina also colonized the Asian high-mountain lakes, and identify the need for further research to trace the possible effect of rapid environmental changes in this region on the diversity and ecology of high-altitude Daphnia populations. |
| Text | 312699 2013 ISI Web of Science WOS ZOOR14910050170 ISI Web of Science WOS 000322901200006 Daphnia longispina complex Alpine lakes Molecular systematics UV radiation 12S At the edge and on the top molecular identification and ecology of Daphnia dentifera and D longispina in high altitude Asian lakes Markus Moest; Adam Petrusek; Ruben Sommaruga; Peter Jan Juracka; Miroslav Slusarczyk; Marina Manca; Piet Spaak Most, Markus Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dubendorf, Switzerland; Petrusek, Adam Charles Univ Prague, Fac Sci, Dept Ecol, CR 12844 Prague 2, Czech Republic; Sommaruga, Ruben Univ Innsbruck, Inst Ecol, Lab Aquat Photobiol Plankton Ecol, A 6020 Innsbruck, Austria; Juracka, Petr Jan Charles Univ Prague, Fac Sci, Dept Ecol, CR 12844 Prague 2, Czech Republic; Slusarczyk, Miroslav Univ Warsaw, Dept Hydrobiol, PL 02097 Warsaw, Poland; Manca, Marina CNR ISE, Pallanza Verbania; Spaak, Piet Eawag, Swiss Federal Institute of Aquatic Science and Technology, 8600 Dubendorf, Switzerland The occurrence of members of the highly diverse Daphnia longispina complex in Southern and Central Asian high mountain lakes has been recognized for more than a century. Until now, however, no molecular data have been available for these populations inhabiting the Roof of the World. Here, we present the first identification for D. gr. longispina from that region based on a molecular phylogeny. Our findings show that alpine lakes in the Pamir and Himalaya mountains host populations of widespread species of the complex, for which these are the highest known localities. A spineless morph from the Himalaya region, previously labeled as D. longispina var. aspina, was clustering tightly with D. dentifera, while a population from the Pamir mountain range was grouped with D. longispina. In addition, we analyzed ecological data available for lakes in the Khumbu region Himalaya to investigate ecological preferences of non pigmented D. gr. longispina. The identified factors can at least partly be related to avoidance of high UV conditions by this species. We conclude that the widespread species D. dentifera and D. longispina also colonized the Asian high mountain lakes, and identify the need for further research to trace the possible effect of rapid environmental changes in this region on the diversity and ecology of high altitude Daphnia populations. 715 Published version Articolo 2013_Hydrobiologia_715_51_62.pdf Articolo in rivista Kluwer 1573 5117 Hydrobiologia Dordr., Online Hydrobiologia Dordr., Online Hydrobiologia Dordr., Online Hydrobiologia. Dordr., Online Hydrobiologia Dordrecht Dordr., Online Hydrobiologia Boston Dordr., Online Hydrobiologia London Dordr., Online marinamarcella.manca MANCA MARINA MARCELLA TA.P04.016.004 Ecologia teorica e applicata degli ecosistemi acquatici |
