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Luo S, Wang M, Ma W, Gu D, Jin Z, Yang R, Qian Z, Song C, Wang Z, Jin S. Environment DNA Reveals Fish Diversity in a Canyon River within the Upper Pearl River Drainage. Animals (Basel) 2024; 14:2433. [PMID: 39199966 PMCID: PMC11350740 DOI: 10.3390/ani14162433] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/21/2024] [Revised: 08/03/2024] [Accepted: 08/20/2024] [Indexed: 09/01/2024] Open
Abstract
Investigating fish diversity in canyon rivers through conventional fish surveys is challenging due to precipitous conditions, including steep slopes, rapid water flow, and complex habitats. Additionally, intensive construction of dams has further complicated the understanding of contemporary fish diversity in these rivers. In this study, we used the environmental DNA (eDNA) technique to assess fish diversity and examine the effects of dams on fish diversity in the Mabiehe River, a canyon river in the upper reaches of the Pearl River drainage. Water samples from 15 sampling sites were collected, yielding 9,356,148 valid sequences. Utilizing the NCBI public database, a total of 60 freshwater fish species were identified, with Carassius auratus, Cyprinus carpio, and Pelteobagrus fulvidraco being the most dominant species in the Mabiehe River. We also detected one nationally protected fish species, three provincially protected fish species, and six exotic species in this river. Furthermore, eDNA analyses demonstrated that the lotic river sections harbor more species and greater diversity than dammed sections, suggesting that dams might exert significant impacts on local fish diversity. Overall, this study supports the effectiveness of the eDNA technique as a complementary tool to traditional field surveys for monitoring fish biodiversity in canyon rivers.
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Affiliation(s)
- Si Luo
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai’an 223003, China; (S.L.); (R.Y.); (Z.Q.); (C.S.); (Z.W.)
| | - Meng Wang
- Power China Guiyang Engineering Corporation Limited, Guiyang 550081, China; (M.W.); (W.M.); (Z.J.)
| | - Weizhong Ma
- Power China Guiyang Engineering Corporation Limited, Guiyang 550081, China; (M.W.); (W.M.); (Z.J.)
| | - Dangen Gu
- Pearl River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Guangzhou 510380, China;
| | - Zhijun Jin
- Power China Guiyang Engineering Corporation Limited, Guiyang 550081, China; (M.W.); (W.M.); (Z.J.)
| | - Ruiqi Yang
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai’an 223003, China; (S.L.); (R.Y.); (Z.Q.); (C.S.); (Z.W.)
| | - Zhen Qian
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai’an 223003, China; (S.L.); (R.Y.); (Z.Q.); (C.S.); (Z.W.)
| | - Chengwen Song
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai’an 223003, China; (S.L.); (R.Y.); (Z.Q.); (C.S.); (Z.W.)
| | - Zexin Wang
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai’an 223003, China; (S.L.); (R.Y.); (Z.Q.); (C.S.); (Z.W.)
| | - Shiyu Jin
- School of Life Science and Food Engineering, Huaiyin Institute of Technology, Huai’an 223003, China; (S.L.); (R.Y.); (Z.Q.); (C.S.); (Z.W.)
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Monroe TGR, Cantanhêde SPD, Sousa NSM, Monroe NB, Piorski NM, Tchaicka L. Inventory reveals non-native species and variation in spatial-temporal dynamics of fish community in a Brazilian protected area. BRAZ J BIOL 2023; 83:e274232. [PMID: 37970901 DOI: 10.1590/1519-6984.274232] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/04/2023] [Accepted: 09/22/2023] [Indexed: 11/19/2023] Open
Abstract
The increase in the number of Brazilian protected areas has been progressive and, although it is essential for the conservation of biodiversity, it is important to monitor and properly manage these areas, as they present several cases of biological invasions. The Lençóis Maranhenses constitute the peculiar delta of the Americas and are under the consequences of the bioinvasion of tilapias and peacock bass. Collections were carried out in the Lençóis Maranhenses National Park from March/2016 to November/2020, with the aid of gill nets and cast nets. The species were identified with the help of specialized literature and a historical comparison with previous works was carried out. Cytochrome oxidase subunit I was sequenced to confirm identification of non-native species. We recorded the expansion of the occurrence of Oreochromis niloticus, and the first record of the species Oreochromis mossambicus and Cichla monoculus. A total of 31 species belonging to eight orders, eighteen families and twenty-nine genera were identified, indicating a lag in the diversity of species found in relation to previous studies. After 20 years of the first record of invasive fish, there is an expansion of bioinvasion and new cases that indicate a lack of monitoring and containment measures for the species, indicating the fragility of conservation in the area.
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Affiliation(s)
- T G R Monroe
- Universidade Federal do Maranhão - UFMA, Programa de Pós-graduação em Biodiversidade e Biotecnologia da Amazônia Legal, São Luís, MA, Brasil
| | - S P D Cantanhêde
- Universidade Estadual do Maranhão - UEMA, Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade, São Luís, MA, Brasil
| | - N S M Sousa
- Universidade Estadual do Maranhão - UEMA, Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade, São Luís, MA, Brasil
| | - N B Monroe
- Instituto Federal de Educação, Ciência e Tecnologia do Maranhão - IFMA, São Raimundo das Mangabeiras, MA, Brasil
| | - N M Piorski
- Universidade Federal do Maranhão - UFMA, Programa de Pós-graduação em Biodiversidade e Biotecnologia da Amazônia Legal, São Luís, MA, Brasil
- Universidade Federal do Maranhão - UFMA, Departamento de Biologia, São Luís, MA, Brasil
- Universidade Federal do Maranhão - UFMA, Laboratório de Ecologia e Sistemática de Peixes, São Luís, MA, Brasil
| | - L Tchaicka
- Universidade Federal do Maranhão - UFMA, Programa de Pós-graduação em Biodiversidade e Biotecnologia da Amazônia Legal, São Luís, MA, Brasil
- Universidade Estadual do Maranhão - UEMA, Programa de Pós-graduação em Ecologia e Conservação da Biodiversidade, São Luís, MA, Brasil
- Universidade Estadual do Maranhão - UEMA, Departamento de Biologia, São Luís, MA, Brasil
- Universidade Estadual do Maranhão - UEMA, Departamento de Biologia, Laboratório de Biodiversidade Molecular, São Luís, MA, Brasil
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Genetic markers indicate that hybrids of Pseudoplatystoma (Siluriformes, Pimelodidae) are reproducing in natural environments in southeastern Brazil. Biol Invasions 2022. [DOI: 10.1007/s10530-021-02701-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
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Donin LM, Ferrer J, Carvalho TP. Uncertainties and risks in delimiting species of Cambeva (Siluriformes: Trichomycteridae) with single-locus methods and geographically restricted data. NEOTROPICAL ICHTHYOLOGY 2022. [DOI: 10.1590/1982-0224-2022-0019] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
Abstract Cambeva contains species with complex taxonomy or poorly delimitated in terms of morphology and geopraphic distribution. We conducted an extensive review of Cambeva populations from coastal drainages of Southern to Southeastern Brazil to evaluate species geographic limits with an integrative analysis including morphological and molecular data (COI). We test if two single-locus methods, Bayesian Poisson Tree Processes (bPTP) and Generalized Mixed Yule Coalescent (GMYC), are efficient to delimit species boundaries in Cambeva by the comparison with the diagnosable morphological units. Using GMYC, we also evaluated the combination of tree and molecular clock priors to reconstruct the input phylogeny and assessed how well the implemented model fitted our empirical data. Eleven species were identified using a morphological diagnosability criterion: Cambeva balios, C. barbosae, C. botuvera, C. cubataonis, C. davisi, C. guaraquessaba, C. iheringi, C. tupinamba, and C. zonata and two treated as undescribed species. In contrast with previous knowledge, many of them have wider distribution and high intraspecific variation. Species delimitation based on single-locus demonstrated incongruences between the methods and strongly differed from the morphological delimitation. These disagreements and the violation of the GMYC model suggest that a single-locus data is insufficient to delimit Cambeva species and the failure may be attributable to events of mitochondrial introgression and incomplete lineage sorting.
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Bueno ML, Magalhães ALB, Andrade Neto FR, Alves CBM, Rosa DDM, Junqueira NT, Pessali TC, Pompeu PS, Zenni RD. Alien fish fauna of southeastern Brazil: species status, introduction pathways, distribution and impacts. Biol Invasions 2021. [DOI: 10.1007/s10530-021-02564-x] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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Santos RP, Melo BF, Yazbeck GM, Oliveira RS, Hilário HO, Prosdocimi F, Carvalho DC. Diversification of
Prochilodus
in the eastern Brazilian Shield: Evidence from complete mitochondrial genomes (Teleostei, Prochilodontidae). J ZOOL SYST EVOL RES 2021. [DOI: 10.1111/jzs.12475] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Affiliation(s)
- Rosiane P. Santos
- Laboratório de Genética da Conservação Programa de Pós‐Graduação em Biologia dos Vertebrados Pontifícia Universidade Católica de Minas Gerais Belo Horizonte Brazil
- Laboratório de Recursos Genéticos Programa de Pós‐Graduação em Ecologia Universidade Federal de São João del‐Rei São João del‐Rei Brazil
| | - Bruno F. Melo
- Departamento de Biologia Estrutural e Funcional Instituto de Biociências Universidade Estadual Paulista Botucatu Brazil
| | - Gabriel M. Yazbeck
- Laboratório de Recursos Genéticos Programa de Pós‐Graduação em Ecologia Universidade Federal de São João del‐Rei São João del‐Rei Brazil
| | - Rafael S. Oliveira
- Programa de Pós‐Graduação em Ciência da Computação Universidade Federal de São João del‐Rei São João del‐Rei Brazil
| | - Heron O. Hilário
- Laboratório de Genética da Conservação Programa de Pós‐Graduação em Biologia dos Vertebrados Pontifícia Universidade Católica de Minas Gerais Belo Horizonte Brazil
| | - Francisco Prosdocimi
- Laboratório de Genômica e Biodiversidade Instituto de Bioquímica Médica Leopoldo de MeisUniversidade Federal do Rio de Janeiro Rio de Janeiro Brazil
| | - Daniel C. Carvalho
- Laboratório de Genética da Conservação Programa de Pós‐Graduação em Biologia dos Vertebrados Pontifícia Universidade Católica de Minas Gerais Belo Horizonte Brazil
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Sales NG, Wangensteen OS, Carvalho DC, Deiner K, Præbel K, Coscia I, McDevitt AD, Mariani S. Space-time dynamics in monitoring neotropical fish communities using eDNA metabarcoding. THE SCIENCE OF THE TOTAL ENVIRONMENT 2021; 754:142096. [PMID: 32898783 DOI: 10.1016/j.scitotenv.2020.142096] [Citation(s) in RCA: 10] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 06/19/2020] [Revised: 08/24/2020] [Accepted: 08/29/2020] [Indexed: 06/11/2023]
Abstract
The biodiverse Neotropical ecoregion remains insufficiently assessed, poorly managed, and threatened by unregulated human activities. Novel, rapid and cost-effective DNA-based approaches are valuable to improve understanding of the biological communities and for biomonitoring in remote areas. Here, we evaluate the potential of environmental DNA (eDNA) metabarcoding for assessing the structure and distribution of fish communities by analysing water and sediment from 11 locations along the Jequitinhonha River catchment (Brazil). Each site was sampled twice, before and after a major rain event in a five-week period and fish diversity was estimated using high-throughput sequencing of 12S rRNA amplicons. In total, 252 Molecular Operational Taxonomic Units (MOTUs) and 34 fish species were recovered, including endemic, introduced, and previously unrecorded species for this basin. Spatio-temporal variation of eDNA from fish assemblages was observed and species richness was nearly twice as high before the major rain event compared to afterwards. Yet, peaks of diversity were primarily associated with only four of the locations. No correlation between β-diversity and longitudinal distance or presence of dams was detected, but low species richness observed at sites located near dams might that these anthropogenic barriers may have an impact on local fish diversity. Unexpectedly high α-diversity levels recorded at the river mouth suggest that these sections should be further evaluated as putative "eDNA reservoirs" for rapid monitoring. By uncovering spatio-temporal changes, unrecorded biodiversity components, and putative anthropogenic impacts on fish assemblages, we further strengthen the potential of eDNA metabarcoding as a biomonitoring tool, especially in regions often neglected or difficult to access.
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Affiliation(s)
- Naiara Guimarães Sales
- Ecosystems and Environment Research Centre, School of Science, Engineering and Environment, University of Salford, UK; CESAM - Centre for Environmental and Marine Studies, Departamento de Biologia Animal, Faculdade de Ciências da Universidade de Lisboa, Lisbon, Portugal.
| | - Owen Simon Wangensteen
- Norwegian College of Fishery Science, UiT - The Arctic University of Norway, Tromsø, Norway
| | - Daniel Cardoso Carvalho
- Programa de Pós-graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brazil
| | | | - Kim Præbel
- Norwegian College of Fishery Science, UiT - The Arctic University of Norway, Tromsø, Norway
| | - Ilaria Coscia
- Ecosystems and Environment Research Centre, School of Science, Engineering and Environment, University of Salford, UK
| | - Allan D McDevitt
- Ecosystems and Environment Research Centre, School of Science, Engineering and Environment, University of Salford, UK
| | - Stefano Mariani
- Ecosystems and Environment Research Centre, School of Science, Engineering and Environment, University of Salford, UK; School of Natural Sciences and Psychology, Liverpool John Moores University, Liverpool, UK
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Sastraprawira SM, Abd. Razak IH, Shahimi S, Pati S, Edinur HA, John AB, Ahmad A, Kumaran JV, Martin MB, Chong JL, Chowdhury AJK, Nelson BR. A review on introduced Cichla spp. and emerging concerns. Heliyon 2020; 6:e05370. [PMID: 33204875 PMCID: PMC7648196 DOI: 10.1016/j.heliyon.2020.e05370] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/07/2020] [Revised: 09/14/2020] [Accepted: 10/26/2020] [Indexed: 11/15/2022] Open
Abstract
Peacock bass (Cichla spp.) originates from the Neotropical environments of Brazil and Venezuela but, through trade and smuggling for aquarium keeping, sport fishing and aquaculture, it is now an emerging concern. Yet, less is known for Cichla spp. distribution and its ability to invade new environments. Aimed to communicate on Cichla spp. ecology, biology and introduction schemes from Scopus, Web of Science, Google Scholar and also National Centre for Biotechnology Information, this review also contains management strategies for invading fish species. While Cichla spp. can displace native fish populations, this concern is explained using ecological functions, physiological demands, direct and secondary invasion, disease tolerance and parasite spillover. Briefly, Cichla spp. has rapid embryogenesis (72 h) and matures in short periods (11-12 months), giving it an advantage to colonize new environments. With a large appetite, this true piscivore gains territorial control over water bodies by making it their feeding and nursery grounds. Perceived as an emerging concern after becoming introduced, seal-off or sport fishing were used to manage Cichla spp. but, this practice is not sustainable for the entire ecosystem. Hence, we recommend bottom-up management that involves community participation because they interact with the fish and have knowledge about their environment.
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Affiliation(s)
- Shantika Maylana Sastraprawira
- Institute of Tropical Biodiversity and Sustainable Development, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Iqbal Harith Abd. Razak
- Faculty of Marine and Environmnetal Sciences, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Salwa Shahimi
- Institute of Tropical Biodiversity and Sustainable Development, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
- Faculty of Marine and Environmnetal Sciences, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Siddhartha Pati
- Institute of Tropical Biodiversity and Sustainable Development, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
- Research Division, Association of Biodiversity Conservation and Research, Devine Colony, 756001 Balasore, Odisha, India
| | - Hisham Atan Edinur
- Forensic Science Programme, School of Health Sciences, Universiti Sains Malaysia, 16150 Kubang Kerian, Kelantan, Malaysia
- Environmental Futures Research Institute, Griffith University, Nathan, Queensland 4111, Australia
| | - Akbar Bavajohn John
- Institute of Oceanography and Maritime Studies, Kulliyyah of Science, Jalan Sultan Ahmad Shah, 25200 Kuantan, Pahang, Malaysia
| | - Amirrudin Ahmad
- Faculty of Marine and Environmnetal Sciences, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Jayaraj Vijaya Kumaran
- Centre of Excellence for Entrepreneurship Research and Innovation, Universiti Malaysia Kelantan, Locked Bag 36, Pengkalan Chepa, 16100 Kota Bharu, Kelantan, Malaysia
| | - Melissa Beata Martin
- Faculty of Marine and Environmnetal Sciences, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Ju Lian Chong
- Faculty of Marine and Environmnetal Sciences, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
| | - Ahmed Jalal Khan Chowdhury
- Department of Marine Science, Kulliyyah of Science, International Islamic University Malaysia Kuantan, Jalan Sultan Ahmad Shah, 25200, Kuantan, Malaysia
| | - Bryan Raveen Nelson
- Institute of Tropical Biodiversity and Sustainable Development, Universiti Malaysia Terengganu, 21030 Kuala Nerus, Terengganu, Malaysia
- Research Division, Association of Biodiversity Conservation and Research, Devine Colony, 756001 Balasore, Odisha, India
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Chagas ATDA, Ludwig S, Pimentel JDSM, de Abreu NL, Nunez-Rodriguez DL, Leal HG, Kalapothakis E. Use of complete mitochondrial genome sequences to identify barcoding markers for groups with low genetic distance. Mitochondrial DNA A DNA Mapp Seq Anal 2020; 31:139-146. [PMID: 32314625 DOI: 10.1080/24701394.2020.1748609] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
Abstract
Complete mitochondrial sequences can be rapidly obtained and are widely available, providing a great source of species information and allowing for the discovery of new specific molecular markers. However, for some taxonomic groups, traditional approaches for species delimitation are impaired by the low genetic distance values. In these cases, other species-level markers are used. For Prochilodus, which includes important neotropical fish species, species-level delimitation usually results in poor phylogenetic resolution when using mitochondrial COI/cytB genes as barcoding markers because of low genetic variability and low species-level resolution. Thus, in this study, we developed an approach to design and validate new barcoding markers with high species-level resolution obtained from the D-loop region, using Prochilodus spp. as a model. For the new barcoding marker validation, the amplicon region was used to infer the phylogenetic relationships of Prochilodus spp. through three distinct methods: Bayesian inference (BI), Neighbor-Joining method (NJ), and Maximum Likelihood method (ML). The phylogenetic relationships of Prochilodus spp. revealed high resolution at species-level, nonoverlapping clades, and high branch support. The genetic distance results allied to two different clustering methods (Bayesian Poisson tree processes and automatic barcode gap discovery) revealed the existence of a barcoding gap, thus, validating the use of the barcoding markers designed in this study. The approach proposed here may, therefore, be expanded to other taxa to access and validate new barcoding markers with higher resolution at the species level.
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Affiliation(s)
- Aline Torres de Azevedo Chagas
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Sandra Ludwig
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Juliana da Silva Martins Pimentel
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil.,Pitágoras College, Belo Horizonte, Brazil
| | - Nazaré Lúcio de Abreu
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Daniela Lidia Nunez-Rodriguez
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Hortensia Gomes Leal
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
| | - Evanguedes Kalapothakis
- Department of Genetics, Ecology and Evolution, Institute of Biological Sciences, Federal University of Minas Gerais, Belo Horizonte, Brazil
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Teixeira DF, Neto FRA, Gomes LC, Beheregaray LB, Carvalho DC. Invasion dynamics of the white piranha (Serrasalmus brandtii) in a Neotropical river basin. Biol Invasions 2019. [DOI: 10.1007/s10530-019-02138-y] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
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11
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Pinheiro APB, Melo RMC, Teixeira DF, Birindelli JLO, Carvalho DC, Rizzo E. Integrative approach detects natural hybridization of sympatric lambaris species and emergence of infertile hybrids. Sci Rep 2019; 9:4333. [PMID: 30867523 PMCID: PMC6416303 DOI: 10.1038/s41598-019-40856-4] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/01/2018] [Accepted: 02/22/2019] [Indexed: 12/31/2022] Open
Abstract
Despite its relevance for ecology, evolution and conservation of species, natural hybridization and hybrids biology are still poorly studied in freshwater fish. Here, we tested the hypothesis that sympatric species Astyanax paranae and A. fasciatus are able to interbreed in the natural environment and presented evidence for the first record of hybridization between these species. We analyzed anatomical traits, gametogenesis, reproductive biology, and genetic variations of the COI and S7 genes of both species and putative hybrids. Intermediate morphometric and meristic features were observed in hybrids when compared to A. paranae and A. fasciatus. Overlap in reproductive season was showed for these species, with greater reproductive activity from August to January, but hybrids did not present any sign of gonadal maturation. Oogonia and perinucleolar follicles as well as spermatogonia and primary spermatocytes were found in hybrids, but previtellogenic and vitellogenic follicles, spermatids, and spermatozoa were absent. Moreover, several alterations in gametogenesis were detected, such as interrupted meiosis in both males and females, vacuolated and degenerated germ cells, increased interstitial tissue, and presence of immune cells. Molecular analyses supported the hypothesis of hybridization between A. paranae and A. fasciatus. Overall, our multidisciplinary approach also provides strong evidence that hybrids are infertile.
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Affiliation(s)
- Ana Paula Barbosa Pinheiro
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, UFMG, Belo Horizonte, C. P. 486, 31270-901, Minas Gerais, Brazil
| | - Rafael Magno Costa Melo
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, UFMG, Belo Horizonte, C. P. 486, 31270-901, Minas Gerais, Brazil
| | - Daniel Fonseca Teixeira
- Programa de Pós-graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, PUC Minas, Belo Horizonte, 30535-610, Minas Gerais, Brazil
| | - José Luís Olivan Birindelli
- Departamento de Biologia Animal e Vegetal, Universidade Estadual de Londrina, UEL, Londrina, C. P. 10.011, 86057-970, Paraná, Brazil
| | - Daniel Cardoso Carvalho
- Programa de Pós-graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, PUC Minas, Belo Horizonte, 30535-610, Minas Gerais, Brazil
| | - Elizete Rizzo
- Departamento de Morfologia, Instituto de Ciências Biológicas, Universidade Federal de Minas Gerais, UFMG, Belo Horizonte, C. P. 486, 31270-901, Minas Gerais, Brazil.
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12
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Sales NG, Mariani S, Salvador GN, Pessali TC, Carvalho DC. Hidden Diversity Hampers Conservation Efforts in a Highly Impacted Neotropical River System. Front Genet 2018; 9:271. [PMID: 30087693 PMCID: PMC6066647 DOI: 10.3389/fgene.2018.00271] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/01/2017] [Accepted: 07/03/2018] [Indexed: 11/13/2022] Open
Abstract
Neotropical Rivers host a highly diverse ichthyofauna, but taxonomic uncertainty prevents appropriate conservation measures. The Doce River Basin (DRB), lying within two Brazilian threatened hotspots (Atlantic Forest and Brazilian Savanna) in south-east Brazil, faced the worst ever environmental accident reported for South American catchments, due to a dam collapse that spread toxic mining tailings along the course of its main river. Its ichthyofauna was known to comprise 71 native freshwater fish species, of which 13 endemic. Here, we build a DNA barcode library for the DRB ichthyofauna, using samples obtained before the 2015 mining disaster, in order to provide a more robust biodiversity record for this basin, as a baseline for future management actions. Throughout the whole DRB, we obtained a total of 306 barcodes, assigned to 69 putative species (with a mean of 4.54 barcodes per species), belonging to 45 genera, 18 families, and 5 orders. Average genetic distances within species, genus, and families were 2.59, 11.4, and 20.5%, respectively. The 69 species identified represent over 76% of the known DRB ichthyofauna, comprising 43 native (five endemic, of which three threatened by extinction), 13 already known introduced species, and 13 unknown species (such as Characidium sp., Neoplecostomus sp., and specimens identified only at the sub-family level Neoplecostominae, according to morphological identification provided by the museum collections). Over one fifth of all analyzed species (N = 16) had a mean intraspecific genetic divergence higher than 2%. An integrative approach, combining NND (nearest neighbor distance), BIN (barcode index number), ABGD (automatic barcode gap discovery), and bPTP (Bayesian Poisson Tree Processes model) analyses, suggested the occurrence of potential cryptic species, species complex, or historical errors in morphological identification. The evidence presented calls for a more robust, DNA-assisted cataloging of biodiversity-rich ecosystems, in order to enable effective monitoring and informed actions to preserve and restore these delicate habitats.
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Affiliation(s)
- Naiara G Sales
- Ecosystems and Environment Research Centre, School of Environment & Life Sciences, University of Salford, Salford, United Kingdom
| | - Stefano Mariani
- Ecosystems and Environment Research Centre, School of Environment & Life Sciences, University of Salford, Salford, United Kingdom
| | - Gilberto N Salvador
- Laboratório de Ecologia e Conservação, Universidade Federal do Pará, Belém, Brazil
| | - Tiago C Pessali
- Museu de Ciências Naturais PUC Minas, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brazil
| | - Daniel C Carvalho
- Programa de Pós-graduação em Biologia de Vertebrados, Pontifícia Universidade Católica de Minas Gerais, Belo Horizonte, Brazil
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Melo BF, Dorini BF, Foresti F, Oliveira C. Little Divergence Among Mitochondrial Lineages of Prochilodus (Teleostei, Characiformes). Front Genet 2018; 9:107. [PMID: 29670644 PMCID: PMC5893770 DOI: 10.3389/fgene.2018.00107] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2017] [Accepted: 03/19/2018] [Indexed: 11/13/2022] Open
Abstract
Evidence that migration prevents population structure among Neotropical characiform fishes has been reported recently but the effects upon species diversification remain unclear. Migratory species of Prochilodus have complex species boundaries and intrincate taxonomy representing a good model to address such questions. Here, we analyzed 147 specimens through barcode sequences covering all species of Prochilodus across a broad geographic area of South America. Species delimitation and population genetic methods revealed very little genetic divergence among mitochondrial lineages suggesting that extensive gene flow resulted likely from the highly migratory behavior, natural hybridization or recent radiation prevent accumulation of genetic disparity among lineages. Our results clearly delimit eight genetic lineages in which four of them contain a single species and four contain more than one morphologically problematic taxon including a trans-Andean species pair and species of the P. nigricans group. Information about biogeographic distribution of haplotypes presented here might contribute to further research on the population genetics and taxonomy of Prochilodus.
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Affiliation(s)
- Bruno F. Melo
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, Brazil
- Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, DC, United States
| | - Beatriz F. Dorini
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, Brazil
| | - Fausto Foresti
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, Brazil
| | - Claudio Oliveira
- Departamento de Morfologia, Instituto de Biociências, Universidade Estadual Paulista, Botucatu, Brazil
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