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Shiganova TA, Kamakin AM, Pautova LA, Kazmin AS, Roohi A, Dumont HJ. An impact of non-native species invasions on the Caspian Sea biota. Adv Mar Biol 2023; 94:69-157. [PMID: 37244679 DOI: 10.1016/bs.amb.2023.01.002] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/29/2023]
Abstract
The Caspian Sea is a large inland brackish basin, vulnerable to invaders due to its long isolation and considerable endemism among its native biota. A brief description of Caspian biota evolution until its modern state is given. The pathways and vectors of invasion and the ways of establishment of non-native species since the early 20th century are summarized. The newly established species are euryphilic, with high ecological plasticity, able to adapt to new environments and to affect their biodiversity. This review is based on unpublished field data, collected in 1999-2019 in the Northern, Middle and Southern Caspian, and on relevant published information. The arrival of non-native species occurred in three periods: (1) in the 1930s, deliberate introductions aimed at enriching commercial stocks and edible resources, (2) since 1952, the construction of the Volga-Don Canal led to the arrival of benthic foulers and macrophytes from ships; (3) since the early 1980s to present, ballast water tanks were mounted on ships, favoring the arrival of phyto- and zooplankton species. Most established non-native species reached the Caspian Sea via the Black Sea. They include both Black Sea native species and non-native species from the North Atlantic areas, which first arrived and established in the Black Sea. Few established non-native species came from brackish water; fresh water fishes were deliberately introduced to develop aquaculture. Though not numerous, these species became dominant in both benthos and plankton communities, where they replaced native Caspian species. Among them, the invading ctenophore Mnemiopsis leidyi, which had no predators, continues to thrive in the Caspian ecosystem, impoverishing its biodiversity and bio-resources. However, lately its natural predator, the ctenophore Beroe ovata, arrived and established in the Southern and Middle Caspian providing a chance for ecosystem recovery, as has already happened in the Black Sea.
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Affiliation(s)
- Tamara A Shiganova
- Shirshov Institute of Oceanology of Russian Academy of Sciences, Moscow, Russia.
| | - Andrei M Kamakin
- Caspian Scientific Research Institute of Fisheries, Astrakhan, Russia
| | - Larisa A Pautova
- Shirshov Institute of Oceanology of Russian Academy of Sciences, Moscow, Russia
| | - Alexander S Kazmin
- Shirshov Institute of Oceanology of Russian Academy of Sciences, Moscow, Russia
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Zhang X, Huang Q, Liu P, Sun C, Papa RDS, Sanoamuang L, Dumont HJ, Han BP. Geography, ecology, and history synergistically shape across-range genetic variation in a calanoid copepod endemic to the north-eastern Oriental. Evolution 2023; 77:422-436. [PMID: 36622816 DOI: 10.1093/evolut/qpac043] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2021] [Revised: 10/25/2022] [Accepted: 11/23/2022] [Indexed: 01/10/2023]
Abstract
The center-periphery hypothesis (CPH) predicts that peripheral populations will have lower genetic variation than those at the center of a species' distribution. However, ecological margins do not always coincide with geographical edges when topographies are diverse. Historical climate changes can also strongly affect genetic variation. Here, we examined genetic variation in Phyllodiaptomus tunguidus, a calanoid copepod endemic to the north-eastern Oriental. This species was predicted to exhibit a complex pattern of genetic variation across its range due to the diverse topographies and stable climate history of the north-eastern Oriental. To test this, we used geographic distance to the center of the distribution, current ecological suitability, and climate during the last glacial maximum as geographical, ecological, and historical factors, respectively, in our analyses. We measured genetic diversity and population differentiation using mitochondrial and nuclear markers. This showed that P. tunguidus had 3 refugia during the last glacial maximum (LGM). Such a pattern of multiple refugia complicates the determination of the center and periphery of spatial genetic diversity. Both regression models and redundancy analyses failed to support the CPH. Instead, they showed that geographical, ecological, and historical factors together shaped population genetic structure in this species. Ecological factors explained significantly more genetic variation than did geographical and historical factors-however, all three factors interacted significantly to affect the pattern of genetic variation. The results extend our understanding of the CPH and the extent to which it can explain genetic variation across populations.
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Affiliation(s)
- Xiaoli Zhang
- Department of Ecology, Jinan University, Guangzhou, China
| | - Qi Huang
- Department of Ecology, Jinan University, Guangzhou, China
| | - Ping Liu
- Department of Ecology, Jinan University, Guangzhou, China
| | - Chenghe Sun
- Department of Ecology, Jinan University, Guangzhou, China
| | - Rey Donne S Papa
- Department of Biological Sciences, College of Science, The Graduate School and Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila, Philippines
| | - Laorsri Sanoamuang
- Applied Taxonomic Research Center, Faculty of Science, Khon Kaen University, Khon Kaen, Thailand.,International College, Khon Kaen University, Khon Kaen, Thailand
| | - Henri J Dumont
- Department of Ecology, Jinan University, Guangzhou, China.,Department of Biology, Ghent University, Gent, Belgium
| | - Bo-Ping Han
- Department of Ecology, Jinan University, Guangzhou, China
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3
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Xu M, Liu P, Huang Q, Xu S, Dumont HJ, Han BP. High-quality genome of Diaphanosoma dubium provides insights into molecular basis of its broad ecological adaptation. iScience 2023; 26:106006. [PMID: 36798432 PMCID: PMC9926121 DOI: 10.1016/j.isci.2023.106006] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/14/2022] [Revised: 07/20/2022] [Accepted: 01/13/2023] [Indexed: 01/19/2023] Open
Abstract
Diaphanosoma dubium Manuilova, 1964, is a widespread planktonic water flea in Asian freshwater. Although sharing similar ecological roles with species of Daphnia, studies on D. dubium and its congeners are still few and lacking a genome for the further studies. Here, we assembled a high quality and chromosome level genome of D. dubium by combining long reads sequencing and Hi-C technologies. The total length of assembled genome was 101.8 Mb, with 98.92 Mb (97.2%) anchored into 22 chromosomes. Through comparative genomic analysis, we found the genes, involved in anti-ROS, detoxification, protein digestion, germ cells regulation and protection, underwent expansion in D. dubium. These genes and their expansion helpfully explain its widespread geographical distribution and dominance in eutrophic waters. This study provides insight into the adaptive evolution of D. dubium at genomic perspectives, and the present high quality genomic resource will be a footstone for future omics studies of the species and its congeners.
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Affiliation(s)
- Meng Xu
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China
| | - Ping Liu
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China,College of Environmental Science and Engineering, Yangzhou University, Yangzhou 225127, China
| | - Qi Huang
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China
| | - Shaolin Xu
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China
| | - Henri J. Dumont
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China,Ghent University, Department of Biology, Ledeganckstraat 35, 9000 Ghent, Belgium
| | - Bo-Ping Han
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China,Corresponding author
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Tang Y, Wang S, Jin X, Zhou D, Lin Q, Liu Z, Zhang X, Dumont HJ. Extensive Carbon Contribution of Inundated Terrestrial Plants to Zooplankton Biomass in a Eutrophic Lake. Microb Ecol 2022:10.1007/s00248-022-02089-3. [PMID: 35916938 DOI: 10.1007/s00248-022-02089-3] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/15/2022] [Accepted: 07/26/2022] [Indexed: 06/15/2023]
Abstract
Organic carbon derived from terrestrial plants contributes to aquatic consumers, e.g., zooplankton in lakes. The degree of the contribution depends on the availability of terrestrial organic carbon in lake organic pool and the transfer efficiency of the carbon. Terrestrial organic carbon is poor-quality food for zooplankton with a mismatch of nutrition content and was incorporated to zooplankton with much lower efficiency than phytoplankton. Contributions of terrestrial carbon to zooplankton generally decrease with an increase in phytoplankton production, indicating a preferential incorporation of phytoplankton in previous investigations. However, in eutrophic lakes, the dominating cyanobacteria were of poor quality and incorporated to consumers inefficiently too. In that case, zooplankton in eutrophic wetlands, where cyanobacteria dominate the phytoplankton production and massive terrestrial plants are inundated, may not preferentially incorporate poor food-quality phytoplankton resource to their biomass. Therefore, we hypothesize that carbon contributions of terrestrial vegetation to zooplankton and to lake particulate organic pool should be similar in such aquatic ecosystems. We tested this hypothesis by sampling zooplankton and carbon sources in Ming Lake (Jinan University Campus, southern China) which was overgrown by terrestrial plants after drying and re-flooded. After 60 days of observations at weekly (or biweekly) intervals, applying stable carbon (13C), nitrogen (15 N), and hydrogen (2H) isotopic analysis and a stable isotope mixing model, we estimated the occurrence of extensive carbon contribution (≥ 50%) of flooded terrestrial plants to cladocerans and copepods. Contribution of inundated terrestrial plants to cladocerans was similar to that to lake particulate organic pool. Thus, our study quantified the role of terrestrial carbon in eutrophic wetlands, enhancing our understanding of cross-ecosystem interactions in food webs with an emphasis on the resource quality.
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Affiliation(s)
- Yali Tang
- Department of Ecology, Jinan University, Guangzhou, 510632, China.
- Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, 510632, China.
| | - Sirui Wang
- Department of Ecology, Jinan University, Guangzhou, 510632, China
| | - Xiaotong Jin
- Department of Ecology, Jinan University, Guangzhou, 510632, China
| | - Daiying Zhou
- Department of Ecology, Jinan University, Guangzhou, 510632, China
| | - Qiuqi Lin
- Department of Ecology, Jinan University, Guangzhou, 510632, China
| | - Zhengwen Liu
- Department of Ecology, Jinan University, Guangzhou, 510632, China.
- Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, 510632, China.
- State Key Lab. of Lake and Environment, Nanjing Institute of Geography and Limnology, Nanjing, 210008, China.
| | - Xiufeng Zhang
- Department of Ecology, Jinan University, Guangzhou, 510632, China.
- Engineering Research Center of Tropical and Subtropical Aquatic Ecological Engineering, Ministry of Education, Guangzhou, 510632, China.
| | - Henri J Dumont
- Department of Ecology, Jinan University, Guangzhou, 510632, China
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Gu YL, Sun CH, Liu P, Zhang X, Sinev AY, Dumont HJ, Han BP. Complete mitochondrial genome of Ovalona pulchella (Branchiopoda, Cladocera) as the first representative in the family Chydoridae: Gene rearrangements and phylogenetic analysis of Cladocera. Gene X 2022; 818:146230. [PMID: 35093448 DOI: 10.1016/j.gene.2022.146230] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/22/2021] [Revised: 12/10/2021] [Accepted: 01/13/2022] [Indexed: 11/18/2022] Open
Abstract
Chydoridae are phytophilic-benthic microcrustaceans that make up a significant proportion of species diversity and play an important role in the littoral zone of freshwater ecosystems worldwide. Here, we provide the complete mitochondrial genome of Ovalona pulchella (King, 1853), determined by next-generation sequencing. The entire mitochondrial genome is 15,362 bp in length; this is the first sequenced mitochondrial genome in the family Chydoridae. The base composition and codon usage were typical of Cladocera species. The mitochondrial gene arrangement (37 genes) was not consistent with that of other Branchiopoda. Both maximum likelihood and Bayesian analyses supported each suborder and family of Branchiopoda as monophyletic groups. The relationships among the families were as follows: [(Leptestheriidae + Limnadiidae) + (Sididae + (Bosminidae + (Chydoridae + Daphniidae)))] + Triopsidae. The newly sequenced O. pulchella was most closely related to the family Daphniidae. The complete mitochondrial genome of O. pulchella also provides valuable molecular information for further analysis of the phylogeny of the Chydoridae and the taxonomic status of the Branchiopoda.
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Affiliation(s)
- Yang-Liang Gu
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China; South China Institute of Environmental Sciences, Ministry of Ecology and Environment of the People's Republic of China, Guangzhou 510530, China
| | - Cheng-He Sun
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China.
| | - Ping Liu
- College of Environmental Science and Engineering, Yangzhou University, Jiangsu 225127, China.
| | - Xiaoli Zhang
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China
| | - Artem Y Sinev
- Department of Invertebrate Zoology, Biological Faculty, M.V. Lomonosov Moscow State University, Leninskie Gory, Moscow 119991, Russia
| | - Henri J Dumont
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China
| | - Bo-Ping Han
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China
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Macêdo RL, Sousa FDR, Dumont HJ, Rietzler AC, Rocha O, Elmoor-Loureiro LMA. Climate change and niche unfilling tend to favor range expansion of Moina macrocopa Straus 1820, a potentially invasive cladoceran in temporary waters. Hydrobiologia 2022; 849:4015-4027. [PMID: 35342194 PMCID: PMC8938975 DOI: 10.1007/s10750-022-04835-7] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 05/30/2021] [Revised: 02/19/2022] [Accepted: 02/24/2022] [Indexed: 06/14/2023]
Abstract
UNLABELLED Non-native species' introductions have increased in the last decades primarily due to anthropogenic causes such as climate change and globalization of trade. Moina macrocopa, a stress-tolerant cladoceran widely used in bioassays and aquaculture, is spreading in temporary and semi-temporary natural ponds outside its natural range. Here, we characterize the variations in the climatic niche of M. macrocopa during its invasions outside the native Palearctic range following introduction into the American continent. Specifically, we examined to what extent the climatic responses of this species have diverged from those characteristics for its native range. We also made predictions for its potential distribution under current and future scenarios. We found that the environmental space occupied by this species in its native and introduced distribution areas shares more characteristics than randomly expected. However, the introduced niche has a high degree of unfilling when displacing its original space towards the extension to drier and hotter conditions. Accordingly, M. macrocopa can invade new areas where it has not yet been recorded in response to warming temperatures and decreasing winter precipitation. In particular, temporary ponds are more vulnerable environments where climatic and environmental stresses may also lower biotic resistance. SUPPLEMENTARY INFORMATION The online version contains supplementary material available at 10.1007/s10750-022-04835-7.
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Affiliation(s)
- Rafael Lacerda Macêdo
- Núcleo de Estudos Limnológicos, Universidade Federal do Estado do Rio de Janeiro – UNIRIO, Av. 8 Pasteur, 458, Rio de Janeiro, RJ CEP 22290-240 Brazil
- Graduate Program in Ecology and Natural Resources, and Department of Ecology and Evolutionary Biology, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Francisco Diogo R. Sousa
- Laboratório de Taxonomia Animal, Unidade Acadêmica Especial de Ciências Biológicas, Universidade Federal de Jataí – UFJ, BR 364 km 195 n°3800, Jataí, GO CEP 75801-615 Brazil
- Programa de Pós-Graduação Em Zoologia, Universidade de Brasília - UnB, Campus Universitário Darcy Ribeiro, Brasília, CEP 70910-900 Brazil
| | - Henri J. Dumont
- Department of Biology, Ghent University, 9000 Ghent, Belgium
| | - Arnola C. Rietzler
- Department of Genetics, Ecology and Evolution, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Odete Rocha
- Graduate Program in Ecology and Natural Resources, and Department of Ecology and Evolutionary Biology, Federal University of São Carlos - UFSCar, São Carlos, Brazil
| | - Lourdes M. A. Elmoor-Loureiro
- Laboratório de Taxonomia Animal, Unidade Acadêmica Especial de Ciências Biológicas, Universidade Federal de Jataí – UFJ, BR 364 km 195 n°3800, Jataí, GO CEP 75801-615 Brazil
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Zhang XL, Liu P, Xu SL, Rizo EZ, Zhang Q, Dumont HJ, Han BP. Geographic Variation of Phyllodiaptomus tunguidus Mitogenomes: Genetic Differentiation and Phylogeny. Front Genet 2021; 12:711992. [PMID: 34531896 PMCID: PMC8439380 DOI: 10.3389/fgene.2021.711992] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/19/2021] [Accepted: 08/03/2021] [Indexed: 12/04/2022] Open
Abstract
Phyllodiaptomus tunguidus (Copepoda: Calanoida) is largely endemic to and widespread in freshwater in southern China, where it inhabits a complex landscape from lowland to highland across an elevation gradient of 2000m. A deep genetic differentiation can be expected between its most distant geographic populations. Here, we sequenced nine mitogenomes from diverse populations. All mitogenomes contained 37 genes, including 13 protein-coding genes (PCG), two rRNA genes, 22 tRNA genes and one control region. Their base composition, genetic distance and tRNA structure indeed revealed a wide differentiation between mitogenomes. Two P. tunguidus from Guangxi near Vietnam differed from the other seven by up to 10.1%. Their tRNA-Arg had a complete clover-leaf structure, whereas that of the others did not contain an entire dihydrouridine arm. The nine mitogenomes also differed in the length of rRNA. NJ, ML, and Bayesian analyses all split them into two clades, viz. the two P. tunguidus from Guangxi (Clade 1), and the other seven (Clade 2). Both the structure and phylogeny of the mitogenomes suggest that P. tunguidus has complex geographic origin, and its populations in Clade 1 have long lived in isolation from those in Clade 2. They currently reach the level of subspecies or cryptic species. An extensive phylogenetic analysis of Copepoda further verified that Diaptomidae is the most recently diverging family in Calanoida and that P. tunguidus is at the evolutionary apex of the family.
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Affiliation(s)
- Xiao-Li Zhang
- Department of Ecology, Jinan University, Guangzhou, China
| | - Ping Liu
- Department of Ecology, Jinan University, Guangzhou, China
| | - Shao-Lin Xu
- Department of Ecology, Jinan University, Guangzhou, China
| | - Eric Zeus Rizo
- Department of Ecology, Jinan University, Guangzhou, China.,Division of Biological Sciences, College of Arts and Sciences, University of the Philippines Visayas, Iloilo, Philippines
| | - Qun Zhang
- Department of Ecology, Jinan University, Guangzhou, China
| | - Henri J Dumont
- Department of Ecology, Jinan University, Guangzhou, China.,Department of Biology, Ghent University, Ghent, Belgium
| | - Bo-Ping Han
- Department of Ecology, Jinan University, Guangzhou, China
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Xu SL, Han BP, Martínez A, Schwentner M, Fontaneto D, Dumont HJ, Kotov AA. Mitogenomics of Cladocera (Branchiopoda): Marked gene order rearrangements and independent predation roots. Mol Phylogenet Evol 2021; 164:107275. [PMID: 34339827 DOI: 10.1016/j.ympev.2021.107275] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 07/14/2021] [Accepted: 07/28/2021] [Indexed: 11/18/2022]
Abstract
Cladocera (Crustacea: Branchiopoda) is a key group of invertebrates. Despite a long history of phylogenetic research, relationships within this group remain disputed. We here provide new insights based on 15 new mitochondrial genomes obtained from high-throughput sequencing (HTS) and 40 mitogenomes extracted from published HTS datasets. Together with 25 mitogenomes from GenBank, we generated a matrix of 80 mitogenomes, 44 of them belonging to Cladocera. We also obtained a matrix with 168 nuclear orthologous genes to further assess the phylogenetic result from mitogenomes based on published data and one new HTS data ofLeptodora. Maximum likelihood and Bayesian phylogenetic analyses recovered all Branchiopoda orders as monophyletic and supported a sister-group relationship between Anomopoda and Onychopoda, making the taxon Gymnomera paraphyletic and supporting an independent origin of predatory Haplopoda and Onychopoda. The nuclear phylogeny and topological tests also support Gymnomera as paraphyletic, and the nuclear phylogeny strongly supports a sister-group relationship between Ctenopoda and Haplopoda. We provide a fossil-calibrated time tree, congruent with a Carboniferous origin for Cladocera and a subsequent diversification of the crown group of Anomopoda, Onychopoda, and Ctenopoda, at least in the Triassic. Despite their long evolutionary history, non-Cladoceran Branchiopoda exhibited high mitogenome structural stability. On the other hand, 21 out of 24 gene rearrangements occurred within the relatively younger Cladocera. We found the differential base compositional skewness patterns between Daphnia s.s. and Ctenodaphnia, which might be related to the divergence between these taxa. We also provide evidence to support the recent finding that Spinicaudata possesses mitogenomes with inversed compositional skewness without gene rearrangement. Such a pattern has only been reported in Spinicaudata.
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Affiliation(s)
- Shao-Lin Xu
- Jinan University, Department of Ecology, Guangzhou 510632, China
| | - Bo-Ping Han
- Jinan University, Department of Ecology, Guangzhou 510632, China.
| | - Alejandro Martínez
- National Research Council of Italy (CNR), Water Research Institute (IRSA), Molecular Ecology Group (MEG), Largo Tonolli 50, I-28922 Verbania Pallanza, Italy
| | | | - Diego Fontaneto
- National Research Council of Italy (CNR), Water Research Institute (IRSA), Molecular Ecology Group (MEG), Largo Tonolli 50, I-28922 Verbania Pallanza, Italy
| | - Henri J Dumont
- Jinan University, Department of Ecology, Guangzhou 510632, China; Ghent University, Department of Biology, Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - Alexey A Kotov
- Laboratory of Aquatic Ecology and Invasions, A.N. Severtsov Institute of Ecology and Evolution of Russian Academy of Sciences, Moscow, Russia
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Pan J, Liu P, Pajk F, Dumont HJ, Han BP. The mitochondrial genome of Diaphanosoma excisum Sars, 1885 (Crustacea: Branchiopoda: Cladocera) from Hainan Island, China. Mitochondrial DNA B Resour 2021; 6:1279-1280. [PMID: 33829108 PMCID: PMC8009117 DOI: 10.1080/23802359.2021.1907252] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Diaphanosoma excisum is the only Cladoceran in tropical freshwaters and parapatrically occurs with Diaphanosoma dubium in the transition between the tropics and subtropics. Here, we present the complete mitochondrial genome (MG) determined by next-generation sequencing and offer a phylogenetic analysis of D. excisum. The MG of D. excisum is 17,615 bp in size, including 13 protein-coding genes (PCGs), 2 ribosomal RNA, 23 tRNA, and 2 putative control regions. The MG has a biased A + T of 65.34% for base composition. Compared to D. dubium, the MG of D. excisum has one more tRNA-Met, one unknown extra putative control region and is different in the arrangement of its tRNAs. The MG sequence and tRNA order provide valuable molecular data for understanding the phylogeny and speciation of Diaphanosoma.
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Affiliation(s)
- Jiaying Pan
- Department of Ecology, Jinan University, Guangzhou, PR China
| | - Ping Liu
- Department of Ecology, Jinan University, Guangzhou, PR China
| | - Franja Pajk
- Department of Ecology, Jinan University, Guangzhou, PR China
| | - Henri J Dumont
- Department of Ecology, Jinan University, Guangzhou, PR China.,Department of Biology, University of Gent, Gent, Belgium
| | - Bo-Ping Han
- Department of Ecology, Jinan University, Guangzhou, PR China
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Van Damme K, Vahalík P, Ketelaar R, Jeziorski P, Bouwman J, Morris M, Suleiman AS, Dumont HJ. Dragonflies of Dragon’s Blood Island: Atlas of the Odonata of the Socotra Archipelago (Yemen). Rend Fis Acc Lincei 2020. [DOI: 10.1007/s12210-020-00942-6] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/24/2022]
Abstract
Abstract
Dragonflies are important bioindicators of aquatic ecosystem health. We discuss the distribution and richness of the 22 dragon- and damselfly species known from the Socotra Archipelago UNESCO World Heritage Site (Yemen) in the western Indian Ocean. We compiled 841 records from literature, field data and museum collections, covering a surveying period of 123 years (1896–2019). Distribution of the only endemic, the Socotra Bluet Azuragrion granti (McLachlan, 1903), an indicator of pristine lotic waters, is updated. Relatively higher dragonfly species richness occurs in eastern Socotra where suitable aquatic habitats are present all year. We observed a significant drop of the number of taxa over several decades in areas in the Hadiboh Plain where human development impacts are strongest. We discuss the indigenous people’s perception of dragonflies to assess the potential of these invertebrates as local flagships for aquatic biodiversity conservation. Our knowledge of the Socotran Odonata remains incomplete, yet they are now among the best studied animal groups in the archipelago. A new record of an Oriental Anax indicates that the island’s dragonfly fauna may yet harbour surprises. Our compilation of odonate records is the first for Socotra and serves as a baseline for future monitoring of the archipelago’s vital aquatic habitats. We converted all records into a geodatabase which we uploaded to an online, freely available web mapping server and mobile application to facilitate research and conservation of the Socotran dragonflies (www.dragonfliesofsocotra.com).
Graphic abstract
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11
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Zhang X, Xu S, Liu P, Huang Q, Li H, Dumont HJ, Han BP. The mitochondrial genome of Phyllodiaptomus tunguidus Shen & Tai, 1964 (Copepoda, Calanoida) and its phylogeny. Mitochondrial DNA B Resour 2020; 5:2521-2522. [PMID: 33457849 PMCID: PMC7782680 DOI: 10.1080/23802359.2020.1763863] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/06/2022] Open
Abstract
The mitochondrial genome of Phyllodiaptomus diaptomus was sequenced and assembled via Next-Generation Sequencing (NGS) and iterative assembly with a reference seed. The genome is 16446 bp long, A + T biased (69.4%), with 13 protein-coding genes, 22 tRNAs, and 2 rRNA. All protein-coding genes are initiated by a typical “ATN” codon. ND1, ND2, ATP6 genes are terminated with “TAG”, the other 10 genes are terminated with “TAA”. This is the first complete mitogenome published in the Diaptomidae. It provides molecular information useful to a better understanding of the phylogeny of calanoids.
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Affiliation(s)
- Xiaoli Zhang
- Department of Ecology, Jinan University, Guangzhou, China
| | - Shaolin Xu
- Department of Ecology, Jinan University, Guangzhou, China
| | - Ping Liu
- Department of Ecology, Jinan University, Guangzhou, China
| | - Qi Huang
- Department of Ecology, Jinan University, Guangzhou, China
| | - Huiming Li
- Department of Ecology, Jinan University, Guangzhou, China
| | - Henri J Dumont
- Department of Ecology, Jinan University, Guangzhou, China.,Department of Biology, University of Gent, Gent, Belgium
| | - Bo-Ping Han
- Department of Ecology, Jinan University, Guangzhou, China
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12
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Zhang X, Liao J, Xu S, Liu P, Huang Q, Dumont HJ, Han BP. A set of new primers for COI (cytochrome oxidase subunit 1 mitochondrial gene) amplification in Phyllodiaptomus tunguidus (Copepoda, Calanoida, Diaptomidae). Mitochondrial DNA B Resour 2020. [DOI: 10.1080/23802359.2020.1745100] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022] Open
Affiliation(s)
- Xiaoli Zhang
- Department of Ecology, Jinan University, Guangzhou, China
| | - Jian Liao
- Department of Ecology, Jinan University, Guangzhou, China
| | - Shaolin Xu
- Department of Ecology, Jinan University, Guangzhou, China
| | - Ping Liu
- Department of Ecology, Jinan University, Guangzhou, China
| | - Qi Huang
- Department of Ecology, Jinan University, Guangzhou, China
| | - Henri J. Dumont
- Department of Ecology, Jinan University, Guangzhou, China
- Department of Biology, University of Gent, Gent, Belgium
| | - Bo-Ping Han
- Department of Ecology, Jinan University, Guangzhou, China
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13
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Rizo EZ, Xu S, Tang Q, Papa RDS, Dumont HJ, Qian SS, Han BP. A global analysis of cladoceran body size and its variation linking to habitat, distribution and taxonomy. Zool J Linn Soc 2019. [DOI: 10.1093/zoolinnean/zlz053] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Body size is a functional trait that influences the overall biology and ecology of an organism. Studying the shape of size–frequency distributions and size variability within different scales, approximates the influence of large-scale ecological and evolutionary processes on a species. In this study we examine the patterns of distribution and variability of body size among freshwater Cladocera across different taxonomic levels, geographic distribution and habitat association. Using extensive literature data, we show the global distribution of body size in freshwater Cladocera. Hierarchical models were used to assess the effect of different categorical variables on size variability. Our results show that almost all size–frequency distributions were skewed right in all categories. The hierarchical model showed that taxonomic affiliation contributes the most to size variability in our dataset, suggesting that size might be a conserved trait. Large genera (≥1mm) have larger estimated variability compared to smaller genera. In general, our observations on size–frequency distributions and size variability show a brief insight in the varying advantages of adaptive body size in this group of organisms in both biology (physiology) and ecology (competition and co-existence). Thus, body size is a trait important to the survival and continuing evolution of Cladocera.
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Affiliation(s)
- Eric Zeus Rizo
- Department of Ecology, Institute of Hydrobiology, College of Life Sciences and Technology, Jinan University, Guangzhou, Guangdong, People’s Republic of China
| | - Shaolin Xu
- Department of Ecology, Institute of Hydrobiology, College of Life Sciences and Technology, Jinan University, Guangzhou, Guangdong, People’s Republic of China
| | - Quehui Tang
- Department of Ecology, Institute of Hydrobiology, College of Life Sciences and Technology, Jinan University, Guangzhou, Guangdong, People’s Republic of China
| | - Rey Donne S Papa
- Department of Biological Sciences, College of Science, The Graduate School and Research Center for the Natural and Applied Sciences, University of Santo Tomas, Manila, Philippines
| | - Henri J Dumont
- Department of Ecology, Institute of Hydrobiology, College of Life Sciences and Technology, Jinan University, Guangzhou, Guangdong, People’s Republic of China
| | - Song S Qian
- Department of Environmental Sciences, The University of Toledo, Toledo, OH, USA
| | - Bo-Ping Han
- Department of Ecology, Institute of Hydrobiology, College of Life Sciences and Technology, Jinan University, Guangzhou, Guangdong, People’s Republic of China
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14
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Long S, Hamilton PB, Dumont HJ, Rong L, Wu Z, Chen C, Guo Y, Tang J, Fan J, Li C, Zhang T. Effect of algal and bacterial diet on metal bioaccumulation in zooplankton from the Pearl River, South China. Sci Total Environ 2019; 675:151-164. [PMID: 31026639 DOI: 10.1016/j.scitotenv.2019.04.141] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/27/2018] [Revised: 04/09/2019] [Accepted: 04/09/2019] [Indexed: 06/09/2023]
Abstract
The biomagnification of metals (Cd, Co, Cr, Cu, Fe, Mn, Pb and Zn) and the metalloid As in aquatic systems is a global health concern. In this study, concentrations of fatty acid biomarkers in zooplankton were analyzed from the Pearl River, South China between September 2016 and July 2017. The objective was to examine how particulate matter, algae and bacteria food sources affect metal bioaccumulation using fatty acid facilitation. In the zooplankton fraction, positive correlations were observed between Pb concentration and Eicosapentaenoic acid (EPA), Zn and Docosahexaenoic acid (DHA) (diatoms and Cryptophyceae biomarkers), Fe with Palmitoleic acid (C16:1n-7, diatom marker), and a weak association of Mn with α-linolenic acid (C18:3n-3). Cu concentration in the zooplankton increased significantly with an endogenous biotic biomarker Stearic acid (C18:0, bacteria biomarker), while Cd concentrations increased with increasing Oleic acid (C18:1n-9, green alga biomarker) concentration. There was a positive correlation between Cr concentration and the sum of Pentadecylic and Margaric acids (C15:0 + C17:0, bacteria biomarkers). Seven of the nine metals examined showed associations with fatty acids in the zooplankton. The bioaccumulation of Co, Cu, Pb, Fe, Mn and Zn concentration was correlated to the individual biomasses of Brachionus calyciflorus, Filinia longiseta, Schmackeria forbesi, Limnoithona sinenisis, Thermocyclops brevifurcatus, and Diaphanosoma dubium. For selected zooplankton taxa, the algal biomasses of Euglenophyceae, Chlorophyceae, Cryptophyceae, and Bacillariophyceae were correlated. Zooplankton were affected by selected species of phytoplankton and bacteria numbers in the Pearl River. These results show that metal accumulation in zooplankton is not only correlated with diet but is also in part, species specific with metal type. Thus, the bioaccumulation or scavenging of metals across trophic levels is a fundamental and complex component of metal cycling in aquatic environments.
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Affiliation(s)
- Shengxing Long
- Guizhou Provincial Key Laboratory for Rare Animal and Economic Insects of the Mountainous Region, College of Biology and Environmental Engineering, Guiyang University, Guiyang 550005, Guizhou, PR China; Guizhou Normal University, Guiyang, Guizhou 55001, PR China
| | - Paul B Hamilton
- Research and Collections, Canadian Museum of Nature, P.O. Box 3443, Station D, Ottawa, Ontario K1P 6P4, Canada
| | - Henri J Dumont
- Institute of Animal Ecology, University of Ghent, K.L. Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - Li Rong
- Guizhou Normal University, Guiyang, Guizhou 55001, PR China
| | - Zhongxing Wu
- Key Laboratory of Eco-environments in Three Gorges Reservoir Region (Ministry of Education), Chongqing Key Laboratory of Plant Ecology and Resources Research in Three Gorges Reservoir Region, School of Life Science, Southwest University, Chongqing 400715, PR China
| | - Chuan Chen
- Guizhou Normal University, Guiyang, Guizhou 55001, PR China
| | - Yun Guo
- College of Eco-Environmental Engineering, Guizhou Minzu University, Guiyang 550025, PR China
| | - Jinbeng Tang
- Institute of Hydrobiology, College of life Science and Technology, JiNan University, Guangzhou, Guangdong 510632, PR China
| | - Jingjing Fan
- Institute of Hydrobiology, College of life Science and Technology, JiNan University, Guangzhou, Guangdong 510632, PR China
| | - Can Li
- Guizhou Provincial Key Laboratory for Rare Animal and Economic Insects of the Mountainous Region, College of Biology and Environmental Engineering, Guiyang University, Guiyang 550005, Guizhou, PR China
| | - Ting Zhang
- Guizhou Provincial Key Laboratory for Rare Animal and Economic Insects of the Mountainous Region, College of Biology and Environmental Engineering, Guiyang University, Guiyang 550005, Guizhou, PR China.
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15
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Dumont HJ, Vierstraete A, Akbulut N. Cornigerius lacustris of Lake Hazar, Turkey, a synonym of Cornigerius maeoticus (Pengo) of the Ponto-Caspian (Cladocera: Onychopoda). Zootaxa 2019; 4619:zootaxa.4619.1.9. [PMID: 31716321 DOI: 10.11646/zootaxa.4619.1.9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/17/2019] [Indexed: 11/04/2022]
Abstract
Cornigerius species are endemic to the Ponto-Caspian, with the exception of Cornigerius lacustris, which is endemic to freshwater Lake Hazar in the Euphrates basin. However, the barcoding fragment of the cytochrome c subunit I (COI) of animals from the type locality shows less than 1 % divergence with Black Sea and less than 2% with Caspian Lake C. maeoticus, the oldest and most widespread species of the genus. Black Sea and Caspian Lake animals show 1.5 % divergence. We therefore place the origin of the Hazar population in the Black Sea. Combined with a variable morphology, we also conclude that C. lacustris is a synonym of C. maeoticus, as already suspected by its describer. Dating the 'lacustris' population is difficult, but it has been there for at least a century.
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Affiliation(s)
- Henri J Dumont
- Biology Department, Gent University, 9000 Gent, Belgium.
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16
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Martins Ribeiro M, Facchin S, Pereira AH, Kalapothakis E, Xu S, Han BP, Dumont HJ, Cecília Rietzler A. Mitogenome of Daphnia laevis (Cladocera, Daphniidae) from Brazil. Mitochondrial DNA B Resour 2019. [DOI: 10.1080/23802359.2018.1545547] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022] Open
Affiliation(s)
- Marcela Martins Ribeiro
- Laboratório de Limnologia, Ecotoxicologia e Ecologia Aquática, Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - Susanne Facchin
- Laboratório de Biotecnologia e Marcadores Moleculares, Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - Adriana Heloísa Pereira
- Laboratório de Biotecnologia e Marcadores Moleculares, Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - Evanguedes Kalapothakis
- Laboratório de Biotecnologia e Marcadores Moleculares, Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
| | - Shaolin Xu
- Department of Ecology and Institute of Hydrobiology, Jinan University, Jinan, China
| | - Bo-Ping Han
- Department of Ecology and Institute of Hydrobiology, Jinan University, Jinan, China
| | - Henri J. Dumont
- Department of Ecology and Institute of Hydrobiology, Jinan University, Jinan, China
- Department of Biology, University of Gent, Gent, Belgium
| | - Arnola Cecília Rietzler
- Laboratório de Limnologia, Ecotoxicologia e Ecologia Aquática, Departamento de Biologia Geral, Universidade Federal de Minas Gerais, Minas Gerais, Brazil
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17
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Xu L, Lin Q, Xu S, Gu Y, Hou J, Liu Y, Dumont HJ, Han B. Daphnia diversity on the Tibetan Plateau measured by DNA taxonomy. Ecol Evol 2018; 8:5069-5078. [PMID: 29876082 PMCID: PMC5980554 DOI: 10.1002/ece3.4071] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2017] [Revised: 03/25/2018] [Accepted: 03/26/2018] [Indexed: 02/04/2023] Open
Abstract
Daphnia on the Tibetan Plateau has been little studied, and information on species diversity and biogeography is lacking. Here, we conducted a 4-year survey using the barcoding fragment of the mitochondrial COI gene to determine the distribution and diversity of Daphnia species found across the Plateau. Our results show that species richness is higher than previously thought, with total described and provisional species number doubling from 5 to 10. Six of the taxonomic units recovered by DNA taxonomy agreed well with morphology, but DNA barcoding distinguished three clades each for the D. longispina (D. galeata, D. dentifera, and D. longispina) and D. pulex (D. pulex, D. cf. tenebrosa, and D. pulicaria) complexes. The sequence divergence between congeneric species varied within a large range, from 9.25% to 30.71%. The endemic D. tibetana was the most common and widespread species, occurring in 12 hyposaline to mesosaline lakes. The lineage of D. longispina is the first confirmed occurrence in west Tibet.
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Affiliation(s)
- Lei Xu
- South China Sea Fisheries Research InstituteChinese Academy of Fishery SciencesGuangzhouChina
- Institute of HydrobiologyJinan UniversityGuangzhouChina
- Guangdong Provincial Key Laboratory of Fishery Ecology and EnvironmentGuangzhouChina
- Key Laboratory of South China Sea Fishery ResourcesDevelopment and UtilizationMinistry of AgricultureGuangzhouChina
| | - Qiuqi Lin
- Institute of HydrobiologyJinan UniversityGuangzhouChina
| | - Shaolin Xu
- Institute of HydrobiologyJinan UniversityGuangzhouChina
| | - Yangliang Gu
- Institute of HydrobiologyJinan UniversityGuangzhouChina
| | - Juzhi Hou
- Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijingChina
| | - Yongqin Liu
- Institute of Tibetan Plateau ResearchChinese Academy of SciencesBeijingChina
| | | | - Bo‐Ping Han
- Institute of HydrobiologyJinan UniversityGuangzhouChina
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18
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Schneider T, Ikemeyer D, MÜller O, Dumont HJ. Checklist of the dragonflies (Odonata) of Iran with new records and notes on distribution and taxonomy. Zootaxa 2018; 4394:1-40. [PMID: 29690380 DOI: 10.11646/zootaxa.4394.1.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/13/2018] [Indexed: 11/04/2022]
Abstract
Iran has a complex dragonfly fauna influenced by contacts and overlaps of different geographical zones. Its fauna is dominated by Eurosiberian taxa. However, the SE Province Sistãn-va-Baluchestãn is rich in oriental species, many of which having their western distribution limit in Iran. In NE-Iran, Irano-Turanian elements live and in the S- and SW-Iran African species are found. The Iranian Odonata fauna seems well studied, however, a closer look reveals many uncertainties and confusion, some records coming clearly from misidentification whereas other, which were missing proofs of correct identification remains to be confirmed. Even today, every new collecting trip reveals species new for Iran whereas species new for science are still detected, although rarely. In this checklist we include seven taxa new for Iran: Stylurus ubadschii (although a male of uncertain origin is recorded in Schmidt (1954), Ischnura senegalensis (although two uncertain records were published by Martin (1912) and Schmidt (1954), Coenagrion ponticum, C. lunulatum, C. pulchellum, Lestes macrostigma, and Calopteryx splendens tschaldirica. We critically checked all available data, including all published records. Fourteen taxa have been rejected, or placed in the category for need of confirmation. Till the end of 2017, 100 autochthonous taxa of dragonflies and two migratory species could be confirmed to be or have been present in Iran. We provide distribution maps, created after evaluation of published data and containing our own data from 12 trips to Iran, travelling over 35000 km in the country. Over 200 new localities are integrated. Taxonomic confusion is reduced by rejecting the following taxa for Iran: Calopteryx splendens mingrelica, C. hyalina, Erythromma najas, Aeshna cyanea, Gomphus davidi, and Sympetrum sinaiticum. We regard the taxa Gomphus amseli and G. schneiderii transcaspicus as synonyms of G. schneiderii, and Onychogomphus forcipatus lucidostriatus as a synonym of O. f. albotibialis.
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19
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Xu S, Guan Z, Huang Q, Xu L, Vierstraete A, Dumont HJ, Lin Q. The mitochondrial genome of Atrocalopteryx melli Ris, 1912 (Zygoptera: Calopterygidae) via Ion Torrent PGM NGS sequencing. Mitochondrial DNA B Resour 2018; 3:115-117. [PMID: 33474087 PMCID: PMC7800031 DOI: 10.1080/23802359.2017.1413307] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2017] [Accepted: 12/01/2017] [Indexed: 11/03/2022] Open
Abstract
The mitochondrial genome of Atrocalopteryx melli was sequenced and assembled via Next-Generation Sequencing (NGS) and iteratively assembly process with a reference seed. This genome is 15,562 bp long and A + T biased (71%), with 37 genes arranged in common order of Odonata. All protein-coding genes are initiated by typical "ATN" codon, and 9 genes are terminated with a complete stop codon, except nad4, nad5, cox2, and cox3, which are terminated with an incomplete codon "T(aa)". The S5 intergenic spacer is absent in this genome, supporting that lacking of S5 as a specific character for damselflies. The A + T rich region of A. melli is 267 bp longer than that of A. atrata. This mitogenome provides new molecular information for understanding of A. melli and Atrocalopteryx.
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Affiliation(s)
- Shaolin Xu
- Institute of Hydrobiology, Jinan University, Guangzhou, China
| | - Zhaoying Guan
- School of Applied Biology, Shenzhen Institute of Technology, Shenzhen, China
| | - Qi Huang
- Institute of Hydrobiology, Jinan University, Guangzhou, China
| | - Lei Xu
- South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences; Guangdong Provincial Key Laboratory of Fishery Ecology and Environment; Key Laboratory of South China Sea Fishery Resources Development and Utilization, Ministry of Agriculture, Guangzhou, China
| | | | - Henri J. Dumont
- Institute of Hydrobiology, Jinan University, Guangzhou, China
- Department of Biology, University of Gent, Gent, Belgium
| | - Qiuqi Lin
- Institute of Hydrobiology, Jinan University, Guangzhou, China
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20
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Liu P, Xu S, Huang Q, Dumont HJ, Lin Q, Han BP. The mitochondrial genome of Diaphanosoma dubium with comparison with Daphnia magna. Mitochondrial DNA B Resour 2017; 2:926-927. [PMID: 33474039 PMCID: PMC7799746 DOI: 10.1080/23802359.2017.1413295] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/06/2017] [Accepted: 12/01/2017] [Indexed: 11/08/2022] Open
Abstract
Diaphanosoma has been called "tropical Daphnia" for its strong ecological role in tropical freshwater as Daphnia in temperate waters. The present study sequenced and annotated the mitochondrial genome (MG) of Diaphanosoma dubium. The MG of Diaphanosoma dubium is 16,362 bp in length, with typical metazoan gene composition. Phylogenetic analysis confirms an earlier finding that Neodiaphanosoma can be separated from Diaphanosoma as a subgenera. One unknown extra CDS region and different arrangement of tRNA were identified when this MG was compared to that of Daphnia magna. This is the first non-daphnia MG of Cladocera, and information on MG sequence and tRNA order provide valuable molecular data in understanding phylogeny of Diaphanosoma and Cladocera.
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Affiliation(s)
- Ping Liu
- Institute of Hydrobiology, Jinan University, Guangzhou, China
| | - Shaolin Xu
- Institute of Hydrobiology, Jinan University, Guangzhou, China
| | - Qi Huang
- Institute of Hydrobiology, Jinan University, Guangzhou, China
| | - Henri J Dumont
- Institute of Hydrobiology, Jinan University, Guangzhou, China
- Department of Biology, University of Gent, Gent, Belgium
| | - Qiuqi Lin
- Institute of Hydrobiology, Jinan University, Guangzhou, China
| | - Bo-Ping Han
- Institute of Hydrobiology, Jinan University, Guangzhou, China
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21
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Liu P, Xu L, Xu SL, Martínez A, Chen H, Cheng D, Dumont HJ, Han BP, Fontaneto D. Species and hybrids in the genus Diaphanosoma Fischer, 1850 (Crustacea: Branchiopoda: Cladocera). Mol Phylogenet Evol 2017; 118:369-378. [PMID: 29107154 DOI: 10.1016/j.ympev.2017.10.016] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2017] [Revised: 10/18/2017] [Accepted: 10/22/2017] [Indexed: 01/22/2023]
Abstract
Cladocerans are well-studied planktonic crustaceans, especially those of the genus Daphnia in which interesting evolutionary questions have been addressed on speciation processes. The aim of the present study is to demonstrate that other genera of cladocerans show similar levels of cryptic diversity, intraspecific gene flow, and thus become useful model systems for comparison. In order to do so, we chose the genus Diaphanosoma, widespread in tropical and temperate areas. We started with a survey of species diversity in the genus Diaphanosoma in Asia using a morphological approach, then obtained sequences from a mitochondrial and a nuclear marker from multiple individuals of different species, performed tests on DNA taxonomy and molecular phylogenies, and assessed the role of hybridization in explaining the cases of mitonuclear discordance. The results are that cryptic diversity occurs in Diaphanosoma, and mitonuclear discordance was found in about 6% of the sequenced animals. Past hybridization is supported as the most likely explanation for the discordance: no evidence was found of first generation hybrids with heterozygous sequences. Our analysis on patterns of genetic diversity in Diaphanosoma supports similarities and differences with what is known in Daphnia.
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Affiliation(s)
- Ping Liu
- Jinan University, Department of Ecology, Guangzhou 510632, China
| | - Lei Xu
- Jinan University, Department of Ecology, Guangzhou 510632, China; South China Sea Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510300, China
| | - Shao-Lin Xu
- Jinan University, Department of Ecology, Guangzhou 510632, China
| | - Alejandro Martínez
- National Research Council of Italy, Institute of Ecosystem Study, Largo Tonolli 50, I-28922 Verbania Pallanza, Italy
| | - Hua Chen
- Jinan University, Department of Ecology, Guangzhou 510632, China
| | - Dan Cheng
- Jinan University, Department of Ecology, Guangzhou 510632, China
| | - Henri J Dumont
- Jinan University, Department of Ecology, Guangzhou 510632, China; Ghent University, Department of Biology, Ledeganckstraat 35, B-9000 Ghent, Belgium
| | - Bo-Ping Han
- Jinan University, Department of Ecology, Guangzhou 510632, China.
| | - Diego Fontaneto
- National Research Council of Italy, Institute of Ecosystem Study, Largo Tonolli 50, I-28922 Verbania Pallanza, Italy
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22
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Rouis SO, Rouis AO, Dumont HJ, Magellan K, Arab A. Dynamics and effects of Ligula intestinalis (L.) infection in the native fish Barbus callensis Valenciennes, 1842 in Algeria. Acta Parasitol 2016; 61:307-18. [PMID: 27078654 DOI: 10.1515/ap-2016-0041] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2015] [Accepted: 12/04/2015] [Indexed: 11/15/2022]
Abstract
The dynamics of the emergence, duration, and decline phases in epizootic cycles are well known for humans and some crops, but they are poorly understood for host-parasite systems in the wild. Parasites may be particularly insidious as they are often introduced unintentionally, simultaneously with their hosts, and later transferred to species in the new location. Here we investigate the epizootic dynamics of the tapeworm Ligula intestinalis in the Hamiz reservoir, Algeria, and explore its effects on the cyprinid fish Barbus callensis. Regular sampling was conducted from October 2005 to February 2008 with intermittent surveys carried out until 2010. Five percent of the 566 specimens of B. callensis that were caught were infected, with the maximum number of parasites found in spring. There was no obvious difference in weight between uninfected fish and infected ones, and infection did not affect fish condition. However, infected fish were significantly longer than uninfected fish and had inhibited gonad development. The proportion of infected fish caught was significantly higher in year 1 and by the second winter, infection collapsed to zero. The Ligula infection thus appeared to have minimal ecological effects and be of a temporary nature, thus exhibiting an epizootic cycle. Taken together, our data indicates that this infection declined or even failed during our study period. Failure may be due to the specific genetic strain of Ligula, but invasive carp may also have been influential in both the introduction and subsequent decline of this parasite.
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23
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Ji GH, Xiang XF, Chen SZ, Yu GL, Kotov AA, Dumont HJ. Annotated Checklist of Chinese Cladocera (Crustacea: Branchiopoda). Part II. Order Anomopoda (families Macrotrichidae, Eurycercidae and Chydoridae). Zootaxa 2015; 4044:241-69. [PMID: 26624711 DOI: 10.11646/zootaxa.4044.2.4] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2015] [Indexed: 11/04/2022]
Abstract
About 114 "species" of Macrothrichidae, Eurycercidae, and Chydoridae (Cladocera, Anomopoda), belonging to 39 genera, have been reported from China, with 14 species in 6 genera in Macrothrichidae, 2 species in one genus in Eurycercidae, and 98 species in 31 genera in Chydoridae. In total, 203 species in 62 genera, 13 families and 4 orders have so far been reported from the country. Of these, 187 are tentatively considered as valid, while 16 are incertae sedis. In reality, many records hide taxonomic problems that remain to be settled. Up to 10 percent of this fauna might be endemic at the species level, but we expect this number to increase pending new, comprehensive studies. No endemic genera fall to be recorded. Most of the several hundreds of taxonomic or biogeeographic papers from which this information was extracted suffer from poor or outdated taxonomy, such that up to half of all species are up for re-evaluation. Detailed morphological examination, but also provoked male production, especially in chydorids, are ways to improve identifications and should be stimulated. On the other hand, the inventory is certainly still incomplete with several tropical-subtropical taxa still to be expected in China. The extreme south and islands are among promising sites that remain to be explored, as well as extreme habitats all over the country. Molecular studies in China started around the beginning or the present decade, and should be multiplied.
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Affiliation(s)
- Gao-Hua Ji
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China.;
| | - Xian-Fen Xiang
- Institute of Hydrobiology, Chinese Academy of Sciences, 7# Southern Road of East Lake, Wuhan, 430072, China; unknown
| | - Shou-Zhong Chen
- Institute of Hydrobiology, Chinese Academy of Sciences, 7# Southern Road of East Lake, Wuhan, 430072, China; unknown
| | - Gong-Liang Yu
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou, 510632, China, and Dept of Biology, Gent University, 9000 Gent, Belgium; unknown
| | - Alexey A Kotov
- A. N. Severtsov Institute of Ecology and Evolution, Leninsky Prospect 33, Moscow, 119071, Russia Kazan Federal University, Kremlevskaya Str.18, Kazan, 420000, Russia; unknown
| | - Henri J Dumont
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou, 510632, China, and Dept of Biology, Gent University, 9000 Gent, Belgium;
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Schneider T, Ikemeyer D, Dumont HJ. New records of dragonflies (Odonata) from Belutschistan-e-Sistan province in Iran. Zoology in the Middle East 2015. [DOI: 10.1080/09397140.2015.1069249] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Xiang XF, Ji GH, Chen SZ, Yu GL, Xu L, Han BP, Kotov AA, Dumont HJ. Annotated Checklist of Chinese Cladocera (Crustacea: Branchiopoda). Part I. Haplopoda, Ctenopoda, Onychopoda and Anomopoda (families Daphniidae, Moinidae, Bosminidae, Ilyocryptidae). Zootaxa 2015; 3904:1-27. [PMID: 25660769 DOI: 10.11646/zootaxa.3904.1.1] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/31/2014] [Indexed: 11/04/2022]
Abstract
Approximately 199 cladoceran species, 5 marine and 194 freshwater and continental saltwater species, live in China. Of these, 89 species are discussed in this paper. They belong to the 4 cladoceran orders, 10 families and 23 genera. There are 2 species in Leptodoridae; 6 species in 4 genera and 3 families in order Onychopoda; 18 species in 7 genera and 2 families in order Ctenopoda; and 63 species in 11 genera and 4 families in non-Radopoda Anomopoda. Five species might be endemic of China and three of Asia. Many records are suspect at the species level, and numerous taxonomic problems remain to be settled.
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Affiliation(s)
- Xian-Fen Xiang
- Institute of Hydrobiology, Chinese Academy of Sciences, 7# Southern Road of East Lake, Wuhan, Hubei Province, 430072, China.;
| | - Gao-Hua Ji
- College of Fisheries and Life Science, Shanghai Ocean University, Shanghai 201306, China; unknown
| | - Shou-Zhong Chen
- Institute of Hydrobiology, Chinese Academy of Sciences, 7# Southern Road of East Lake, Wuhan, Hubei Province, 430072, China.; unknown
| | - Gong-Liang Yu
- Institute of Hydrobiology, Chinese Academy of Sciences, 7# Southern Road of East Lake, Wuhan, Hubei Province, 430072, China.;
| | - Lei Xu
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China.; unknown
| | - Bo-Ping Han
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China.; unknown
| | - Alexey A Kotov
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China. A. N. Severtsov Institute of Ecology and Evolution, Leninsky Prospect 33, Moscow 119071, Russia Kazan Federal University, Kremlevskaya Str.18, Kazan 420000, Russia; unknown
| | - Henri J Dumont
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou 510632, China.;
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Guo FF, Dumont HJ. Relict populations of Diaphanosoma (Cladocera: Ctenopoda) in the Chadian Sahara, with the description of a new species . Zootaxa 2014; 3856:135-42. [PMID: 25284649 DOI: 10.11646/zootaxa.3856.1.6] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2014] [Indexed: 11/04/2022]
Abstract
We record two species of Diaphanosoma from Ounianga and Tibesti in Northern Chad, the first ctenopods to be found in the Sahara desert. One species, from a freshwater guelta on the south flanks of the Tibesti (D. excisum) is tropical; the second species, found in a freshwater lake in a largely saline environment (the Ounianga plateau) is new to science (D. bopingi sp.nov.) and is here described, with special attention to some previously unnoticed structures on the postabdomen. Its relatives are northern species that may transgress into the tropics but largely live outside of them. They are also more salt-tolerant than the tropical D. excisum. The latter is considered a relict of Megachad times, while the new species is considered a relict of more humid but also cooler times in the desert.
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Affiliation(s)
- Fei-Fei Guo
- Department of Ecology and Institute of Hydrobiology, Jinan University, Guangzhou, China.;
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Dijkstra KDB, Bechly G, Bybee SM, Dow RA, Dumont HJ, Fleck G, Garrison RW, Hämäläinen M, Kalkman VJ, Karube H, May ML, Orr AG, Paulson DR, Rehn AC, Theischinger G, Trueman JW, Van Tol J, Von Ellenrieder N, Ware J. The classification and diversity of dragonflies and damselflies (Odonata). In: Zhang, Z.-Q. (Ed.) Animal Biodiversity: An Outline of Higher-level Classification and Survey of Taxonomic Richness (Addenda 2013) . Zootaxa 2013. [DOI: 10.11646/zootaxa.3703.1.9] [Citation(s) in RCA: 57] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
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Dia A, Dumont HJ. The Odonata of Lebanon. Zoology in the Middle East 2013. [DOI: 10.1080/09397140.2011.10638480] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Affiliation(s)
- Aref Dia
- a Université Libanaise et Conseil National de la Recherche Scientifique (C.N.R.S.) Libanais, P.P. 8182–11 , Riad El Solh , 11072260 , Beirut , Lebanon
| | - Henri J Dumont
- b Ghent University, Department of Biology , Ledeganckstraat 35 , 9000 , Ghent , Belgium
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Dumont HJ, Rietzler AC, Kalapothakis E. Micromoina arboricola n. gen., n. spec. (Crustacea: Cladocera), a new moinid living in a forest tree-hole in Minas Gerais, Brazil. Zootaxa 2013; 3652:533-46. [PMID: 26269853 DOI: 10.11646/zootaxa.3652.5.3] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/04/2022]
Abstract
With a maximum size of ca 0.5 mm, Micromoina arboricola is among the smallest moinids known to date. It was discovered in a flooded treehole in a forest in the Medio Rio Doce Valley, Minas Gerais, Brazil, where it mainly feeds on particulate organic matter derived from the vinhatico tree . However, it is easily cultured in the lab on a diet of green algae plus yeast and pelleted fish food. Structurally, it is a miniature version of a moinid, distinguished by characters on the antennules (both sexes) and the postabdomen. The latter is peculiar in shape, in lacking a basal spine, and in having only three lateral plumose setae. A comparative investigation of the barcoding fragment of the COI gene in a number of moinids confirms the family Moinidae as composed of several genera, as well as the status of the new taxon.
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Affiliation(s)
- Henri J Dumont
- Department of Ecology and Hydrobiology, Jinan University, Guangzhou, China.
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Han BP, Wang T, Xu L, Lin QQ, Dumont HJ. Dynamics in space and time of four testate amoebae (Difflugia spp.) co-existing in the zooplankton of a reservoir in southern China. Eur J Protistol 2011; 47:224-30. [PMID: 21602035 DOI: 10.1016/j.ejop.2011.04.003] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2010] [Revised: 04/18/2011] [Accepted: 04/18/2011] [Indexed: 11/28/2022]
Abstract
We studied a long time series of the dynamics in space and time of four species of Difflugia (thecamoebae) that co-exist in the pelagic plankton of Liuxihe Reservoir, an oligo-mesotrophic impoundment in southern China, during 8-9 months ("summer" form March to November), and retreat to the benthos during the rest of the year ("winter"). We discuss the reasons for the winter retreat, and suggest that predator evasion may be involved, although temperature-linked physiological effects (like the rate of gas bubble production) appear more probable. Clear diel vertical migration of Difflugia was not observed, but patchiness was common. We found no evident lake edge-effects in the spatial pattern either, but the abundances were strongly influenced by trophic conditions and increased by up to one order of magnitude in the upstream, eutrophic sections of the reservoir.
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Affiliation(s)
- Bo-Ping Han
- Institute of Hydrobiology, Jinan University, Guangzhou 510632, China
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Van Damme K, Dumont HJ. Cladocera of the Lençóis Maranhenses (NE - Brazil): faunal composition and a reappraisal of Sars' Method. BRAZ J BIOL 2011; 70:755-79. [PMID: 21085782 DOI: 10.1590/s1519-69842010000400008] [Citation(s) in RCA: 35] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/08/2010] [Accepted: 06/05/2010] [Indexed: 11/22/2022] Open
Abstract
We studied the Cladocera of a group of ephemeral interdunal pools in the Lençóis Maranhenses, Maranhão State (NE - Brazil) and recorded 34 species. The fauna was overwhelmingly neotropical, with no evidence of invasive species. Species composition differed in Lagoa da Colher, an acid system. We provide notes on behaviour, morphology and taxonomy of some lesser-known anomopods, with emphasis on the Chydoridae. We figure male Oxyurella longicaudis, Chydorus eurynotus, Disparalona leptorhyncha, Alonella dadayi and A. clathratula. We provide notes on the "Sars' Method", hatching of freshwater crustaceans from dry mud, a simple technique that complements the information of hit-and-run surveys. About half of the total species number (44%) was revived through this method; 18% of species were additional to field-collected samples. The Sars' method also yielded abundant specimens of rare species, useful for identification and studies on behaviour.
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Affiliation(s)
- K Van Damme
- Department of Biology, Ghent University, Ghent, Belgium.
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Abstract
Borullus, the most centrally situated of the Nile Delta lakes, probably evolved around the eighth century AD from a preexisting salt marsh by fluviatile deposition of sand dunes north of the lake and subsidence of the preexisting tidal swamp behind this barrier. It was flooded yearly (September-December) by the Sebennytic branch of the Nile, and evacuated water through an exit, Bughaz. At low river levels, this process reversed and Bughaz functioned as a marine inlet. Because of this switch, its fauna and flora contained a mix of marine, freshwater, and brackish-water species. Around the mid-nineteenth century, damming of the Nile began, culminating with the high Aswan Dam (1964) that brought the yearly flood fully under control. As a result, a steady flow of Nile water, used for irrigated delta agriculture, began to drain to the lake and became a constant evacuator to the Mediterranean. It turned almost fresh, and its fishery, formerly marine and mullet-based, became cichlid-catfish based. However, rice and other new delta crops caused huge amounts of nutrients to wash down the drains, and currently the lake is eutrophied and only resists hypertrophication because of the low residence time of its water. Finally, the damming of the Nile terminated the influx to the delta of a yearly sediment layer, but subsidence and coastal erosion continue and are now consuming the sand bar that separates the lake from the sea.
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Alekseev V, Dumont HJ, Pensaert J, Baribwegure D, Vanfleteren JR. A redescription of Eucyclops serrulatus (Fischer, 1851) (Crustacea: Copepoda: Cyclopoida) and some related taxa, with a phylogeny of the E. serrulatus-group. ZOOL SCR 2006. [DOI: 10.1111/j.1463-6409.2006.00223.x] [Citation(s) in RCA: 17] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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Van Damme * K, Kotov AA, Dumont HJ. Redescription ofLeydigia parvaDaday, 1905 and assignment toParvalonagen. nov. (Cladocera: Anomopoda: Chydoridae). J NAT HIST 2005. [DOI: 10.1080/00222930500060884] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Dumont HJ, Vanfleteren JR, De Jonckheere JF, H Weekers PH. Phylogenetic relationships, divergence time estimation, and global biogeographic patterns of calopterygoid damselflies (odonata, zygoptera) inferred from ribosomal DNA sequences. Syst Biol 2005; 54:347-62. [PMID: 16012103 DOI: 10.1080/10635150590949869] [Citation(s) in RCA: 67] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022] Open
Abstract
The calopterygoid superfamily (Calopterygidae + Hetaerinidae) is composed of more than twenty genera in two families: the Calopterygidae (at least 17) and the Hetaerinidae (at least 4). Here, 62 calopterygoid (ingroup) taxa representing 18 genera and 15 outgroup taxa are subjected to phylogenetic analysis using the ribosomal 18S and 5.8S genes and internal transcribed spacers (ITS1, ITS2). The five other families of calopterid affinity (Polythoridae, Dicteriadidae, Amphipterygidae, Euphaeidae, and Chlorocyphidae) are included in the outgroup. For phylogenetic inference, we applied maximum parsimony, maximum likelihood, and the Bayesian inference methods. A molecular phylogeny combined with a geographic analysis produced a well-supported phylogenetic hypothesis that partly confirms the traditional taxonomy and describes distributional patterns. A monophyletic origin of the calopterygoids emerges, revealing the Hetaerinid clade as sister group to the Calopterygidae sensu strictu. Within Calopterygidae, seven clades of subfamily rank are recognized. Phylogenetic dating was performed with semiparametric rate smoothing by penalized likelihood, using seven reference fossils for calibration. Divergence time based on the ribosomal genes and spacers and fossil constraints indicate that Calopteryginae (10 genera, approximately 50% of all Calopterygid taxa studied here), Vestalinae (1 genus), and Hetaerinidae (1 genus out of 4 studied here) started radiating around 65 Mya (K/T boundary). The South American Iridictyon (without distinctive morphology except for wing venation) and Southeast Asian Noguchiphaea (with distinctive morphology) are older (about 86 My) and may be survivors of old clades with a Gondwanian range that went extinct at the K/T boundary. The same reasoning (and an even older age, ca. 150 My) applies to the amphipterygids Rimanella and Pentaphlebia (South America-Africa). The extant Calopterygidae show particular species and genus richness between west China and Japan, with genera originating between the early Oligocene and Pleistocene. Much of that richness probably extended much wider in preglacial times. The Holarctic Calopteryx, of Miocene age, was deeply affected by the climatic cooling of the Pliocene and by the Pleistocene glaciations. Its North American and Japanese representatives are of Miocene and Pliocene age, respectively, but its impoverished Euro-Siberian taxa are late Pliocene-Pleistocene, showing reinvasion, speciation, and introgression events. The five other calopterid families combine with the Calopterygidae and Hetaerinidae to form the monophyletic cohort Caloptera, with Polythoridae, Dicteriadidae, and Amphipterygidae sister group to Calopterygoidea. The crown node age of the latter three families has an age of about 157 My, but the Dicteriadidae and Polythoridae themselves are of Eocene age, and the same is true for the Euphaeidae and Chlorocyphidae. The cohort Caloptera itself, with about 197 My of age, goes back to the early Jurassic.
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Affiliation(s)
- Henri J Dumont
- Department of Biology, Ghent University, Ledeganckstraat, 35, B-9000 Ghent, Belgium.
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Weekers PHH, Murugan G, Vanfleteren JR, Belk D, Dumont HJ. Phylogenetic analysis of anostracans (Branchiopoda: Anostraca) inferred from nuclear 18S ribosomal DNA (18S rDNA) sequences. Mol Phylogenet Evol 2002; 25:535-44. [PMID: 12450757 DOI: 10.1016/s1055-7903(02)00289-0] [Citation(s) in RCA: 37] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
Abstract
The nuclear small subunit ribosomal DNA (18S rDNA) of 27 anostracans (Branchiopoda: Anostraca) belonging to 14 genera and eight out of nine traditionally recognized families has been sequenced and used for phylogenetic analysis. The 18S rDNA phylogeny shows that the anostracans are monophyletic. The taxa under examination form two clades of subordinal level and eight clades of family level. Two families the Polyartemiidae and Linderiellidae are suppressed and merged with the Chirocephalidae, of which together they form a subfamily. In contrast, the Parartemiinae are removed from the Branchipodidae, raised to family level (Parartemiidae) and cluster as a sister group to the Artemiidae in a clade defined here as the Artemiina (new suborder). A number of morphological traits support this new suborder. The Branchipodidae are separated into two families, the Branchipodidae and Tanymastigidae (new family). The relationship between Dendrocephalus and Thamnocephalus requires further study and needs the addition of Branchinella sequences to decide whether the Thamnocephalidae are monophyletic. Surprisingly, Polyartemiella hazeni and Polyartemia forcipata ("Family" Polyartemiidae), with 17 and 19 thoracic segments and pairs of trunk limb as opposed to all other anostracans with only 11 pairs, do not cluster but are separated by Linderiella santarosae ("Family" Linderiellidae), which has 11 pairs of trunk limbs. All appear to be part of the Chirocephalidae and share one morphological character: double pre-epipodites on at least part of their legs. That Linderiella is part of the Polyartemiinae suggests that multiplication of the number of limbs occurred once, but was lost again in Linderiella. Within Chirocephalidae, we found two further clades, the Eubranchipus-Pristicephalus clade and the Chirocephalus clade. Pristicephalus is reinstated as a genus.
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Affiliation(s)
- Peter H H Weekers
- Department of Biology, Ghent University, Ledeganckstraat 35, Belgium.
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Weekers PH, De Jonckheere JF, Dumont HJ. Phylogenetic relationships inferred from ribosomal its sequences and biogeographic patterns in representatives of the genus Calopteryx (Insecta: Odonata) of the West Mediterranean and adjacent West European zone. Mol Phylogenet Evol 2001; 20:89-99. [PMID: 11421650 DOI: 10.1006/mpev.2001.0947] [Citation(s) in RCA: 81] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
Western Europe is a reinvasion zone for the riverine dragonfly genus Calopteryx (Insecta: Odonata). Reinvasion may have been from central West Asia or from the West Mediterranean refugium. Phylogenetic relationships of West Mediterranean and West European taxa of the genus Calopteryx from different localities were inferred from sequences of the internal transcribed spacers (ITS1 and ITS2) of the nuclear ribosomal RNA genes. Twenty-six taxa belonging to the species groups C. splendens, C. meridionalis, C. haemorrhoidalis, C. virgo, C. xanthostoma, and C. exul were analyzed, with two North American species, C. amata and C. aequabilis, as outgroup. Sequence data and phylogenetic analyses were used to infer biogeographical patterns. The ribosomal spacers (ITS1 and ITS2) and the intervening 5.8S rDNA gene were amplified by PCR and sequenced. The ITS2 sequences of the West Mediterranean and West European calopterygids show no length variation but the ITS1 region was slightly variable in length. The sequence variation for ITS1 and ITS2 regions between different West Mediterranean and West European calopterygids was 14.5 and 6.1%, respectively. Phylogenetic relationships inferred from ITS sequences only partly confirm morphological data. A monophyletic origin of all West Mediterranean and West European species emerged. They are separated into two main clades; the splendens-like forms and the virgo/meridionalis/haemorrhoidalis group. Intraspecific variability, indicating different stages of speciation, was detected only in West Mediterranean representatives (e.g., C. xanthostoma) but not in invasive representatives in West Europe. The North African endemic C. exul is more closely related to the Italian C. s. caprai than to C. splendens sensu strictu. Based on the present information, Cretan populations are the only splendens-like taxa in addition to C. s. caprai that deserve subspecies status.
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Affiliation(s)
- P H Weekers
- Department of Biology, Animal Ecology Section, Ghent University, Ledeganckstraat 35, Ghent, B-9000, Belgium
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Connery CP, Dumont HJ, Dervan JP, Hartman AR, Anagnostopoulos CE. Transmural myocardial infarction with coexisting critical aortic stenosis as an etiology for early myocardial rupture. J Cardiovasc Surg (Torino) 1994; 35:53-6. [PMID: 8120078] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/28/2023]
Abstract
Myocardial rupture is the most important cause of post-infarct sudden death after myocardial infarction other than shock and dysrhythmias. Usually unrecognized, pseudoaneurysm formation is a delayed consequence of myocardial rupture in a small portion of patients who will remain at high risk for late rupture and death. Clinical studies have defined a profile of the patient who is at increased risk for post-infarct myocardial rupture. We believe that an additional factor, ventricular outflow tract obstruction, may add to the risk of having a post infarct rupture. A high degree of suspicion by the clinician accompanied by the timely performance of diagnostic tests may help to decrease the mortality from this catastrophic event.
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Affiliation(s)
- C P Connery
- Division of Cardiothoracic Surgery, St. Luke's/Roosvelt Hospital Center, Columbia University, New York, NY 10025
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Dumont HJ, Ali AJ, Sarma SSS, Mertens J. Predatory Filter-Feeding in Fairy Shrimps: Functional Response ofStreptocephalus proboscideus (Crustacea: Anostraca) FedAnuraeopsis fissa (Rotifera). ACTA ACUST UNITED AC 1994. [DOI: 10.1002/iroh.19940790403] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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Abstract
Four species of Hexarthra are reported from ponds and lakes in western Canada. Two Rocky Mountain forms are described as new subspecies: Hexarthra bulgarica canadensis n.subsp., at high altitudes, and Hexarthra polyodonta jasperina n.subsp. The nominate subspecies of the latter is known only from saline Lake Van, Turkey. Hexarthra polyodonta jasperina occurs in low salinity lakes and differs morphologically from the nominate subspecies in having a moderately developed ventro-anterior lip. Hexarthra bulgarica bulgarica is a true high-mountain rotifer known from the Rila Mountains, Bulgaria (nominate subspecies), from the Himalayas (H. bulgarica nepalensis n.subsp.), and from the Rocky Mountains (H. bulgarica canadensis n.subsp.). The Nepalese subspecies differs from the nominate subspecies and from H. bulgarica canadensis in having a well developed ventro-anterior lip. Hexarthra bulgarica canadensis differs from the nominate subspecies in having more teeth on the unci, more spines on the ventral arm, and more filaments on all arms. The pair of spines on the dorsolateral arm is the main diagnostic character of the H. bulgarica group. Hexarthra mira (Hudson) occurred at intermediate and lower altitudes, and Hexarthra fennica (Levander) was identified from a saline lake in Saskatchewan where specimens were unusually large, but otherwise typical.
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Dumont HJ, Van de Velde I, Dumont S. The dry weight estimate of biomass in a selection of Cladocera, Copepoda and Rotifera from the plankton, periphyton and benthos of continental waters. Oecologia 1975; 19:75-97. [PMID: 28308833 DOI: 10.1007/bf00377592] [Citation(s) in RCA: 231] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/02/1975] [Indexed: 11/29/2022]
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Dumont HJ, Miron I, Dali'asta U, Decraemer W, Glaus C, Somers D, Dumont HJ. Limnological Aspects of Some Moroccon Atlas Lakes, with Reference to Some Physical and Chemical Variables, the Nature and Distribution of the Phyto- and Zooplankton, Including a Note on Possibilities for the Development of an Inland Fishery. ACTA ACUST UNITED AC 1973. [DOI: 10.1002/iroh.19730580104] [Citation(s) in RCA: 22] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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