Lineage diversity, morphological and genetic divergence in Daphnia magna (Crustacea) among Chinese lakes at different altitudes

Ma, Xiaolin; Ni, Yijun; Wang, Xiaoyu; Hu, Wei; Yin, Mingbo

doi:10.1163/18759866-bja10011

Cited by 13 publications

(4 citation statements)

References 69 publications

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“…A marked shift in body size associated with temperature has already been observed in zooplankton (Gao et al, 2019; Walczynska et al, 2021). Individuals of D. magna from the Qinghai‐Tibetan Plateau, where habitats are cold, have a larger body size than those from warmer lowlands China (Ma et al, 2020). Interestingly, we found genomic signatures underlying thermal adaptations to distinct temperature regimes: mthl5 and SOD1 involved in IIS pathway, and EIF4EBP2 involved in the TOR signalling pathway.…”

Section: Discussionmentioning

confidence: 99%

Climate has contributed to population diversification of Daphnia galeata across Eurasia

Deng,

Zhang,

Wolinska

et al. 2023

Molecular Ecology

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Climate is a fundamental abiotic factor that plays a key role in driving the evolution, distribution and population diversification of species. However, there have been few investigations of genomic signatures of adaptation to local climatic conditions in cladocerans. Here, we have provided the first high‐quality chromosome‐level genome assembly (~143 Mb, scaffold N50 12.6 Mb) of the waterflea, Daphnia galeata, and investigated genomic variation in 22 populations from Central Europe and Eastern China. Our ecological‐niche models suggested that the historic distribution of D. galeata in Eurasia was significantly affected by Quaternary climate fluctuations. We detected pronounced genomic and morphometric divergences between European and Chinese D. galeata populations. Such divergences could be partly explained by genomic signatures of thermal adaptation to distinct climate regimes: a set of candidate single‐nucleotide polymorphisms (SNPs) potentially associated with climate were detected. These SNPs were in genes significantly enriched in the Gene ontology terms “determination of adult lifespan” and “translation repressor activity”, and especially, mthl5 and SOD1 involved in the IIS pathway, and EIF4EBP2 involved in the target of the rapamycin signalling pathway. Our study indicates that certain alleles might be associated with particular temperature regimes, playing a functional role in shaping the population structure of D. galeata at a large geographical scale. These results highlight the potential role of molecular variation in the response to climate variation, in the context of global climate change.

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Section: Discussionmentioning

confidence: 99%

Climate has contributed to population diversification of Daphnia galeata across Eurasia

Deng,

Zhang,

Wolinska

et al. 2023

Molecular Ecology

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“…The most commonly used aquatic invertebrate test organism, Daphnia magna, shows no cryptic species, although D. magna from China and Japan are genetically different from the European ones (Bekker et al, 2018;De Gelas et al, 2005). However, because there are also morphological differences in Chinese D. magna, the populations in China could likely represent a separate species (Ma et al, 2020). The most commonly applied terrestrial invertebrate test organism is the honeybee (Apis mellifera), which is divided into at least 33 subspecies that are subdivided into five evolutionary lineages (Ilyasov et al, 2020).…”

Section: Overview Of Cryptic Species Used In Ecotoxicologymentioning

confidence: 99%

Cryptic Species in Ecotoxicology

Jourdan,

Bundschuh,

Copilaș‐Ciocianu

et al. 2023

Enviro Toxic and Chemistry

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The advent of genetic methods has led to the discovery of an increasing number of species that previously could not be distinguished from each other on the basis of morphological characteristics. Even though there has been an exponential growth of publications on cryptic species, such species are rarely considered in ecotoxicology. Thus, the particular question of ecological differentiation and the sensitivity of closely related cryptic species is rarely addressed. Tackling this question, however, is of key importance for evolutionary ecology, conservation biology, and, in particular, regulatory ecotoxicology. At the same time, the use of species with (known or unknown) cryptic diversity might be a reason for the lack of reproducibility of ecotoxicological experiments and implies a false extrapolation of the findings. Our critical review includes a database and literature search through which we investigated how many of the species most frequently used in ecotoxicological assessments show evidence of cryptic diversity. We found a high proportion of reports indicating overlooked species diversity, especially in invertebrates. In terrestrial and aquatic realms, at least 67% and 54% of commonly used species, respectively, were identified as cryptic species complexes. The issue is less prominent in vertebrates, in which we found evidence for cryptic species complexes in 27% of aquatic and 6.7% of terrestrial vertebrates. We further exemplified why different evolutionary histories may significantly determine cryptic species' ecology and sensitivity to pollutants. This in turn may have a major impact on the results of ecotoxicological tests and, consequently, the outcome of environmental risk assessments. Finally, we provide a brief guideline on how to deal practically with cryptic diversity in ecotoxicological studies in general and its implementation in risk assessment procedures in particular. Environ Toxicol Chem 2023;00:1–26. © 2023 The Authors. Environmental Toxicology and Chemistry published by Wiley Periodicals LLC on behalf of SETAC.

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“…When these resting eggs are suspended in water because of wind wave or other reasons, they could hatch under suitable conditions and form new populations (Hairston and Cáceres, 1996). At present, the phylogeography of Daphnia species is mainly focused on large-scale spatial pattern of modern populations (De Gelas and De Meester, 2005;So et al, 2015;Ma et al, 2016Ma et al, , 2020Kotov et al, 2021). However, fewer studies are focused on the long-term genetic differentiation of Daphnia species based on the information of resting eggs located in different sediment layers (Brede et al, 2009;Möst et al, 2015;Monchamp et al, 2017).…”

Section: Introductionmentioning

confidence: 99%

Population genetic differentiation of Daphnia sinensis in a lasting high-phosphorus Chinese lake, Lake Chaohu

Zhang

Wu²,

Deng³

et al. 2023

Front. Ecol. Evol.

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Ecological shifts (e.g., eutrophication) can affect the genetic differentiation of zooplankton populations in lakes. However, the role of environmental change in a lasting high-phosphorus lake driving the genetic differentiation of zooplankton population structure over time is poorly understood. In this paper, the changes of the genetic diversity and differentiation of Daphnia sinensis population were studied by using the mitochondrial COI gene and microsatellite markers on modern groups (from January to June 2016) and historic groups (obtained from resting eggs in the sediments) in Lake Chaohu. Based on the microsatellite markers, six modern groups were clustered into two clusters (the WG cluster and SG cluster) during the seasonal dynamics, whereas the genetic differentiation of the five historic groups showed a wave-like pattern and had evolved into four clusters. Moreover, the haplotype network showed that six modern groups had one origin center whereas five historic groups had two origin centers based on the mitochondrial COI gene marker. Fu’s Fs neutral test and Tajima’s test indicated that the five historic groups deviated from neutral evolution and showed a bottleneck effect in the history process. Water temperature and total dissolved phosphorus were obviously associated with the seasonal genetic differentiation of D. sinensis, whereas nitrogen content of the sediments was significantly related to the long-term microevolution of D. sinensis in the high-phosphorus environment. Therefore, the changing pattern of D. sinensis population genetic structure was one of the environmental selections probably combined with co-evolutionary, where rapid-increasing nitrogen level had a large impact on D. sinensis population genetic structure in lasting high phosphorus environment in Lake Chaohu.

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Lineage diversity, morphological and genetic divergence in Daphnia magna (Crustacea) among Chinese lakes at different altitudes

Cited by 13 publications

References 69 publications

Climate has contributed to population diversification of Daphnia galeata across Eurasia

Climate has contributed to population diversification of Daphnia galeata across Eurasia

Cryptic Species in Ecotoxicology

Population genetic differentiation of Daphnia sinensis in a lasting high-phosphorus Chinese lake, Lake Chaohu

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