<i>Daphnia</i> diversity on the Tibetan Plateau measured by <scp>DNA</scp> taxonomy

Xu, Lei; Lin, Qian; Xu, Shufa; Gu, Yangliang; Liu, Yongqin; Dumont, Henri J.; Han, Bo‐Ping

doi:10.1002/ece3.4071

Cited by 23 publications

(28 citation statements)

References 49 publications

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“…While D. galeata is also common in Asia (e.g. Chiang & Du, ; Ishida et al, ; Ma et al, ; Wei et al, ), there are few Asian records of D. longispina (Moest et al, ; Xu et al, ). Another common species in Asia is D. dentifera , described in Japan (Ishida et al, ) and China (Chiang & Du, ; Ma et al, ).…”

Section: Introductionmentioning

confidence: 99%

Daphnia galeata and D. dentifera are geographically and ecologically separated whereas their hybrids occur in intermediate habitats: A survey of 44 Chinese lakes

Šmilauer

et al. 2019

Molecular Ecology

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The idea that hybridization promotes range expansion has received recent attention, but support from field studies is limited. We hypothesized that in the cladoceran waterflea genus Daphnia, parental species are geographically and ecologically separated, whereas hybrids occupy intermediate or occasionally extreme environments, potentially facilitating range expansion of parental species. We assessed the distribution of Daphnia dentifera, Daphnia galeata and their interspecific hybrids across 44 lakes in China (using mitochondrial and microsatellite markers), and related it to geographical and environmental lake descriptors. Parental species were geographically separated: D. dentifera occurred in western and central China, and D. galeata in eastern and central China, whereas hybrids were found in the western and central parts of the country. However, after controlling for geographical differences, the effect of environment on species distribution was strong and significant. Specifically, D. dentifera was present in high‐altitude oligotrophic lakes, D. galeata in low‐altitude eutrophic lakes and hybrids at intermediate to high altitudes, mainly in mesotrophic lakes. Microsatellite data indicated that hybrids were locally produced rather than having migrated from elsewhere; they probably resulted from encounters between expanding D. galeata and resident D. dentifera. The present study provides evidence that hybrids can survive in habitats that are otherwise suitable for only one of their parental species, emphasizing the importance of hybridization in expansion of species gene pools.

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Section: Introductionmentioning

confidence: 99%

Daphnia galeata and D. dentifera are geographically and ecologically separated whereas their hybrids occur in intermediate habitats: A survey of 44 Chinese lakes

Šmilauer

et al. 2019

Molecular Ecology

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“…Both 16S rDNA and CO I genes are two popular markers in identifying the genetic differentiation and phylogeny of Daphnia species (Ma et al, ; Ma, Petrusek, Wolinska, Hu, & Yin, ; Wang, Zhang, et al, ; Xu et al, , ). In the present study, the A + T contents were all higher than the C + G contents in the 16S rDNA and CO I gene sequences of D. galeata , which was consistent with other Daphnia species (Hebert et al, ; Wang, Zhang, et al, ; Wu, Wang, et al, ; Xu et al, ). Moreover, our results suggested that the combined analysis of the 16S rDNA and CO I gene sequences could clarify more genetic differentiation of D. galeata from water bodies located in the middle and lower reaches of the Yangtze River, China.…”

Section: Discussionmentioning

confidence: 99%

“…Wei et al () examined the genetic structure of eight populations of the D. longispina complex in Eastern China and found that only D. galeata appeared in the investigated lakes. In addition, D. galeata was also detected as the main species in eutrophic lakes located in central and eastern China (Ma et al, ; Xu et al, ). Usually, Daphnia species have high dispersal capabilities (Louette & De Meester, ).…”

Section: Introductionmentioning

confidence: 99%

“…Hebert, Witt, and Adamowicz () observed that long‐time geographical segregation resulted in genetic differences among Daphnia ambigua populations in five different geographical regions. Xu et al () found that the genetic distance differences between 10 Daphnia distributed in different water bodies of the Tibetan Plateau were 9.25%–30.71%. A high genetic differentiation was observed among Daphnia magna species in Europe, North America, and Japan (De Gelas & De Meester, ), suggesting an intercontinental diffusion of the species.…”

Section: Introductionmentioning

confidence: 99%

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Genetic diversity and differentiation of Daphnia galeata in the middle and lower reaches of the Yangtze River, China

Liu

Deng

Zhang

et al. 2019

Ecology and Evolution

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Mitochondrial 16S rDNA and CO I gene were used as molecular markers for the analysis of the genetic diversity and differentiation of Daphnia galeata populations in nine water bodies in the middle and lower reaches of the Yangtze River. In the combined 16S rDNA and CO I gene sequences, 54 variable sites and 44 haplotypes were observed among 219 individuals belonging to nine D. galeata populations. Average haplotype diversity and nucleotide diversity were, respectively, 0.72% and 0.56%. The F‐statistics (FST) value of the D. galeata populations was 0.149. According to the results of the neutral test, D. galeata in the middle and lower reaches of the Yangtze River had experienced a bottleneck effect in the history. Molecular variance analysis indicated that the genetic differentiation of the D. galeata populations mainly occurred within populations (85.09%). Greater genetic differentiations of D. galeata among individuals within populations appeared in the populations from the Huaihe River basin, whereas smaller genetic differentiations occurred in the populations from the middle reaches of the Yangtze River. Strong gene flows were all observed between Group I (four populations from the middle reaches of the Yangtze River) and Group ΙΙ (three populations from the middle and lower reaches of the Yangtze River), and Group ΙΙΙ (two populations from the Huaihe River basin). The effective migration rates (M) were 851.49 from Group I to Group ΙΙ and 685.96 from Group I to Group ΙΙΙ, respectively. However, no significant relationship was observed between the genetic differentiation and geographical distance of the nine populations (r = .137, p > .05). Results suggested that the genetic differentiation of D. galeata in the water bodies in the middle and lower reaches of the Yangtze River resulted mainly from geographical isolation.

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“…Previous studies of biodiversity and biogeography in the region have focused on aquatic vertebrates (e.g., Zhao et al ; Ding et al ) and terrestrial invertebrates (Zhao and Li ). Very few studies have focused on the biogeography and genetic diversity of aquatic invertebrate zooplankton from the Qinghai‐Tibetan Plateau (Xu et al ; Ma et al , b ).…”

mentioning

confidence: 99%

Clonal diversity and substantial genetic divergence of the Daphnia similis species complex in Chinese lakes: Possible adaptations to the uplift of the Qinghai‐Tibetan Plateau

Wang

et al. 2019

Limnology & Oceanography

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Very few studies have focused on the biogeography and genetic diversity of aquatic invertebrate zooplankton from the Qinghai‐Tibetan Plateau, an important biogeographic hotspot. The geological uplift of this region created special environments requiring adaptive genetic diversification of the resident lineages. Here, we developed and used the first set of high‐resolution microsatellite markers for the Daphnia similis species complex. We screened this species in 23 (out of 303) lakes across China, covering a large geographical and ecological range of habitats. High population clonal diversity of the D. similis species complex was found, regardless of their geographical origin. However, four Tibetan Daphnia sinensis populations showed substantially lower clonal diversity. Interestingly, D. sinensis populations from two regions, Eastern China and the Qinghai‐Tibetan Plateau of Western China, were found to be clearly differentiated from each other. Lakes inhabited by Western D. sinensis were of a lower trophic level, higher altitude, and more likely to freeze in the winter. This study contributes to an understanding of adaptation to their special environments by the freshwater invertebrates in the Qinghai‐Tibetan Plateau.

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Daphnia diversity on the Tibetan Plateau measured by DNA taxonomy

Cited by 23 publications

References 49 publications

Daphnia galeata and D. dentifera are geographically and ecologically separated whereas their hybrids occur in intermediate habitats: A survey of 44 Chinese lakes

Daphnia galeata and D. dentifera are geographically and ecologically separated whereas their hybrids occur in intermediate habitats: A survey of 44 Chinese lakes

Genetic diversity and differentiation of Daphnia galeata in the middle and lower reaches of the Yangtze River, China

Clonal diversity and substantial genetic divergence of the Daphnia similis species complex in Chinese lakes: Possible adaptations to the uplift of the Qinghai‐Tibetan Plateau

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