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Fang X, Dong D, Yang M, Li X. Phylogenetics and Population Genetics of the Petrolisthes lamarckii-P. haswelli Complex in China: Old Lineage and New Species. Int J Mol Sci 2023; 24:15843. [PMID: 37958829 PMCID: PMC10648172 DOI: 10.3390/ijms242115843] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2023] [Revised: 10/27/2023] [Accepted: 10/27/2023] [Indexed: 11/15/2023] Open
Abstract
Petrolisthes lamarckii (Leach, 1821) and P. haswelli Miers, 1884 are a pair of sister species of porcelain crabs, both of which are common in the intertidal zone of southern China, typically found under rocks and in the crevices of coral reefs. However, the distribution, genetic relationship and diversity of the two species in China have not been rigorously studied. Meanwhile, P. lamarckii is considered as a complex of cryptic species due to their diverse morphological features. In this study, we identified 127 specimens of the P. lamarckii-P. haswelli complex (LH complex) and recognised a new species through morphological and molecular analysis. Furthermore, we constructed a time-calibrated phylogeny of the LH complex using three mitochondrial and two nuclear genes from all three species, finding that the divergence of the LH complex can be traced back to the Miocene epoch, and that the genetic diversity increased during the Mid-Pleistocene transition period. Glacial refugia formed during the Pleistocene climatic oscillations has been regarded as one of the contributing factors to the diversification of marine organisms in the north-western Pacific. Petrolisthes haswelli demonstrates a wide distribution along the southern coast of China, while other lineages display more restricted distributions. The research on the demographic history and gene flow of P. haswelli revealed that the Chinese coastal populations experienced an expansion event approximately 12.5 thousand years ago (Kya) and the asymmetrical gene flows were observed between the two sides of the Taiwan Strait and Qiongzhou Strait, respectively, which is likely influenced by the restriction of ocean currents.
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Affiliation(s)
- Xuefeng Fang
- Department of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (X.F.); (M.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Dong Dong
- Department of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (X.F.); (M.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
| | - Mei Yang
- Department of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (X.F.); (M.Y.)
| | - Xinzheng Li
- Department of Marine Organism Taxonomy & Phylogeny, Qingdao Key Laboratory of Marine Biodiversity and Conservation, Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China; (X.F.); (M.Y.)
- University of Chinese Academy of Sciences, Beijing 100049, China
- Laoshan Laboratory, Qingdao 266237, China
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2
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Mazungula DN, Chakona A. An integrative taxonomic review of the Natal mountain catfish, Amphilius natalensis Boulenger 1917 (Siluriformes, Amphiliidae), with description of four new species. JOURNAL OF FISH BIOLOGY 2021; 99:219-239. [PMID: 33635552 DOI: 10.1111/jfb.14714] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/31/2020] [Revised: 02/18/2021] [Accepted: 02/23/2021] [Indexed: 06/12/2023]
Abstract
An integrative taxonomic analysis combining mitochondrial cytochrome oxidase subunit I sequences, morphology, colour pattern and two species delimitation approaches revealed the existence of five lineages within the Natal mountain catfish, Amphilius natalensis, in southern Africa. These lineages are separated by substantial genetic divergences (1.6%-9.46%), and they can be consistently distinguished from one another based on a combination of morphology and colour pattern differences. Additionally, the lineages are allopatrically distributed and confined to isolated river systems draining discrete mountain ranges, which makes gene flow among them unlikely. One of these lineages is A. natalensis s.s., which is confined to the uMngeni and Tukela river systems in KwaZulu Natal (KZN) Province in South Africa. The other four lineages represent new species to science which are described as Amphilius zuluorum sp. nov., endemic to the uMkhomazi River system in KZN, Amphilius engelbrechti sp. nov., endemic to the Inkomati River system in Mpumalanga Province in South Africa, Amphilius marshalli sp. nov., endemic to the Pungwe and Lower Zambezi river systems in Zimbabwe and Mozambique, and Amphilius leopardus sp. nov., endemic to the Ruo River in Malawi. The results show that Amphilius laticaudatus which is endemic to the Buzi River system in Zimbabwe and Mozambique, belongs to the A. natalensis s.l. complex. A redescription of A. laticaudatus is presented and an updated identification key for the mountain catfishes of southern Africa is provided.
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Affiliation(s)
- Daniel Nkosinathi Mazungula
- National Research Foundation - South African Institute for Aquatic Biodiversity, Makhanda (Grahamstown), South Africa
- Department of Ichthyology and Fisheries Science, Rhodes University, Makhanda (Grahamstown), South Africa
| | - Albert Chakona
- National Research Foundation - South African Institute for Aquatic Biodiversity, Makhanda (Grahamstown), South Africa
- Department of Ichthyology and Fisheries Science, Rhodes University, Makhanda (Grahamstown), South Africa
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3
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Onn Chan K, Hutter CR, Wood PL, Su YC, Brown RM. Gene Flow Increases Phylogenetic Structure and Inflates Cryptic Species Estimations: A Case Study on Widespread Philippine Puddle Frogs (Occidozyga laevis). Syst Biol 2021; 71:40-57. [PMID: 33964168 DOI: 10.1093/sysbio/syab034] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/12/2020] [Revised: 04/29/2021] [Accepted: 05/06/2021] [Indexed: 11/14/2022] Open
Abstract
In cryptic amphibian complexes, there is a growing trend to equate high levels of genetic structure with hidden cryptic species diversity. Typically, phylogenetic structure and distance-based approaches are used to demonstrate the distinctness of clades and justify the recognition of new cryptic species. However, this approach does not account for gene flow, spatial, and environmental processes that can obfuscate phylogenetic inference and bias species delimitation. As a case study, we sequenced genome-wide exons and introns to evince the processes that underlie the diversification of Philippine Puddle Frogs-a group that is widespread, phenotypically conserved, and exhibits high levels of geographically-based genetic structure. We showed that widely adopted tree- and distance-based approaches inferred up to 20 species, compared to genomic analyses that inferred an optimal number of five distinct genetic groups. Using a suite of clustering, admixture, and phylogenetic network analyses, we demonstrate extensive admixture among the five groups and elucidate two specific ways in which gene flow can cause overestimations of species diversity: (1) admixed populations can be inferred as distinct lineages characterized by long branches in phylograms; and (2) admixed lineages can appear to be genetically divergent, even from their parental populations when simple measures of genetic distance are used. We demonstrate that the relationship between mitochondrial and genome-wide nuclear p-distances is decoupled in admixed clades, leading to erroneous estimates of genetic distances and, consequently, species diversity. Additionally, genetic distance was also biased by spatial and environmental processes. Overall, we showed that high levels of genetic diversity in Philippine Puddle Frogs predominantly comprise metapopulation lineages that arose through complex patterns of admixture, isolation-by-distance, and isolation-by-environment as opposed to species divergence. Our findings suggest that speciation may not be the major process underlying the high levels of hidden diversity observed in many taxonomic groups and that widely-adopted tree- and distance-based methods overestimate species diversity in the presence of gene flow.
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Affiliation(s)
- Kin Onn Chan
- Lee Kong Chian National History Museum, Faculty of Science, National University of Singapore, 2 Conservatory Drive, 117377 Singapore
| | - Carl R Hutter
- Biodiversity Institute and Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS 66045, USA.,Museum of Natural Sciences and Department of Biological Sciences, Louisiana State University, Baton Rouge, LA 70803, USA
| | - Perry L Wood
- Department of Biological Sciences & Museum of Natural History, Auburn University, Auburn, Alabama 36849, USA
| | - Yong-Chao Su
- Department of Biomedical Science and Environmental Biology, Kaohsiung Medical University, Kaohsiung 80708, Taiwan
| | - Rafe M Brown
- Biodiversity Institute and Department of Ecology and Evolutionary Biology, University of Kansas, Lawrence, KS 66045, USA
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4
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Fontanella FM, Miles E, Strott P. Integrated analysis of the ringneck snake Diadophis punctatus complex (Colubridae: Dipsadidae) in a biodiversity hotspot provides the foundation for conservation reassessment. Biol J Linn Soc Lond 2021. [DOI: 10.1093/biolinnean/blab028] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Abstract
Abstract
Species classification may not reflect the underlying/cryptic genetic diversity and focusing on groups that do not represent historically independent units can misdirect conservation efforts. The identification of evolutionarily significant units (ESUs) allows cryptic genetic diversity to be accounted for when designating conservation priorities. We used multi-locus coalescent-based species delimitation methods and multivariate analyses of morphological data to examine whether the subspecies merit conservation recognition and infer the ESUs in ringneck snakes (Diadophis punctatus) throughout the California Floristic Province. Species delimitation methods failed to recover groups consistent with designated subspecies and instead inferred three well supported, mostly geographically isolated lineages. Divergence time estimates suggest that the divergences were driven by historical isolation associated with Pleistocene climate shifts. We found a correlation between increased morphological differentiation and time since divergence, and greater niche similarity between the more recently diverged eastern California and western California groups. Based on these results, we propose that the morphological similarities are due to a combination of morphological conservatism and evolutionary stasis. Our study provides the foundation necessary to re-assess the biodiversity and conservation status of ringneck snakes and offers an important step in unveiling the diversity within the western portion of the genus’ range.
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Affiliation(s)
- Frank M Fontanella
- Department of Biology, University of West Georgia, Carrollton, GA 30118,USA
| | - Emily Miles
- Department of Biology, University of West Georgia, Carrollton, GA 30118,USA
| | - Polly Strott
- Department of Biology, University of West Georgia, Carrollton, GA 30118,USA
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Zimmermann BL, Buzatto I, Santos S, Giri F, Teixeira de Mello F, Crandall KA, Pérez‐Losada M, Bartholomei‐Santos ML. Entangled Aeglidae (Decapoda, Anomura): Additional evidence for cryptic species. ZOOL SCR 2021. [DOI: 10.1111/zsc.12483] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Affiliation(s)
- Bianca L. Zimmermann
- Programa de Pós‐graduação em Biodiversidade Animal Universidade Federal de Santa Maria Santa Maria Brazil
- Instituto Federal de Educação Ciência e Tecnologia do Rio Grande do Sul Ibirubá Brazil
| | - Ivanice Buzatto
- Programa de Pós‐graduação em Biodiversidade Animal Universidade Federal de Santa Maria Santa Maria Brazil
| | - Sandro Santos
- Programa de Pós‐graduação em Biodiversidade Animal Universidade Federal de Santa Maria Santa Maria Brazil
| | - Federico Giri
- Laboratorio de Macrocrustáceos Instituto Nacional de Limnología Consejo Nacional de Investigaciones Científicas y Técnicas Universidad Nacional del Litoral Santa Fe Argentina
| | - Franco Teixeira de Mello
- Departamento de Ecología y Gestión Ambiental Centro Universitario Regional Este (CURE) Universidad de la República Maldonado Uruguay
| | - Keith A. Crandall
- Computational Biology Institute George Washington University Washington DC USA
- Department of Invertebrate Zoology US National Museum of Natural History Smithsonian Institution Washington DC USA
| | - Marcos Pérez‐Losada
- Computational Biology Institute George Washington University Washington DC USA
- Department of Invertebrate Zoology US National Museum of Natural History Smithsonian Institution Washington DC USA
- CIBIO‐InBIO Centro de Investigação em Biodiversidade e Recursos Genéticos Vairão Portugal
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6
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Braganca PHN, Smith TG, Vreven EJWMN, Chakona A. Integrative taxonomy reveals hidden diversity in the southern African darters genus Nannocharax Günther 1867 (Characiformes: Distichodontidae). JOURNAL OF FISH BIOLOGY 2020; 97:1713-1723. [PMID: 32914416 DOI: 10.1111/jfb.14535] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/01/2020] [Revised: 07/06/2020] [Accepted: 09/08/2020] [Indexed: 06/11/2023]
Abstract
The present study explored the diversity of Nannocharax within southern Africa by implementing three species delimitation methods for a data set consisting of 37 mitochondrial cytochrome oxidase subunit I sequences. Two unilocus coalescent methods, the General Mixed Yule Coalescent (GMYC) and the Bayesian implementation of the Poisson Tree Processes (bPTP), and a genetic distance method, the Automatic Barcode Gap Discovery (ABGD), were applied. Both GMYC and bPTP delimited the same operational taxonomic units (OTUs), revealing a higher diversity for the genus in the region than previously recognised, whereas the ABGD failed to delimit the same candidate species. All methods delimited two species groups, and these are supported based on colouration patterning and morphology; the Nannocharax multifasciatus and the Nannocharax macropterus species groups and the delimited OTUs were assigned to each. Two putative new species were identified, Nannocharax cf. lineostriatus "Okavango" from the Okavango River in Angola and N. cf. lineostriatus "Kwanza" from the Kwanza River system in Angola. The distribution of Nannocharax dageti was confirmed for the Upper Zambezi and extended to the Okavango system, and an identification key for the southern Africa Nannocharax species is provided.
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Affiliation(s)
- Pedro H N Braganca
- NRF-South African Institute for Aquatic Biodiversity, Makhanda (Grahamstown), South Africa
| | - Timothy G Smith
- NRF-South African Institute for Aquatic Biodiversity, Makhanda (Grahamstown), South Africa
| | - Emmanuel J W M N Vreven
- Royal Museum for Central Africa, Section of Vertebrates, Ichthyology, Tervuren, Belgium
- KU Leuven, Laboratory of Biodiversity and Evolutionary Genomics, Leuven, Belgium
| | - Albert Chakona
- NRF-South African Institute for Aquatic Biodiversity, Makhanda (Grahamstown), South Africa
- Department of Ichthyology and Fisheries Science, Rhodes University, Makhanda (Grahamstown), South Africa
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7
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Loretán G, Rueda EC, Cabrera JM, Pérez-Losada M, Collins PA, Giri F. Geographical isolation and restricted gene flow drive speciation of Aegla singularis (Decapoda: Anomura: Aeglidae) in southern South America. Biol J Linn Soc Lond 2019. [DOI: 10.1093/biolinnean/blz148] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/14/2022]
Abstract
Abstract
Geographical isolation is a key element in allopatric speciation. If gene flow is interrupted for long enough by geographical barriers, populations can evolve independently and eventually form distinct species. Aegla singularis provides an ideal model to study this process due to the characteristics of the geographical area that it occupies and its limited dispersal ability. Aegla singularis inhabits streams of the Uruguay and Paraná River basins in the Neotropical region of South America. The basins are separated by the Sierra Central Mountains. Here we studied the speciation of A. singularis resulting from geographical isolation by using molecular and morphometric data. Individuals of A. singularis were analysed using geometric morphometrics and genetic data (COII and EFα1). We found significant differences in shape and genetics between A. singularis populations from the two basins. These differences suggest ongoing divergence due to restricted gene flow caused by the geographical barrier of the Sierra Central Mountains, indicating that the populations of the Parana and Uruguay River slopes are undergoing divergence.
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Affiliation(s)
- Gisela Loretán
- Instituto Nacional de Limnología, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del Litoral, Santa Fe, CP3000, Argentina, Ciudad Universitaria, Santa Fe, Argentina
| | - Eva Carolina Rueda
- Departamento de Ciencias Naturales, FHUC-UNL, Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Universidad Nacional del Litoral, Ciudad Universitaria, Santa Fe, Argentina
| | - Juan Manuel Cabrera
- Instituto Nacional de Limnología, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del Litoral, Santa Fe, CP3000, Argentina, Ciudad Universitaria, Santa Fe, Argentina
| | - Marcos Pérez-Losada
- Computational Biology Institute, Milken Institute School of Public Health, The George Washington University, Washington, DC, USA
- Department of Invertebrate Zoology, US National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
- CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Universidade do Porto, Campus Agrário de Vairão, Portugal
| | - Pablo Agustín Collins
- Instituto Nacional de Limnología, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del Litoral, Santa Fe, CP3000, Argentina, Ciudad Universitaria, Santa Fe, Argentina
| | - Federico Giri
- Instituto Nacional de Limnología, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del Litoral, Santa Fe, CP3000, Argentina, Ciudad Universitaria, Santa Fe, Argentina
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8
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Rodríguez-Flores PC, Macpherson E, Buckley D, Machordom A. High morphological similarity coupled with high genetic differentiation in new sympatric species of coral-reef squat lobsters (Crustacea: Decapoda: Galatheidae). Zool J Linn Soc 2018. [DOI: 10.1093/zoolinnean/zly074] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022]
Affiliation(s)
- Paula C Rodríguez-Flores
- Museo Nacional de Ciencias Naturales (MNCN-CSIC), José Gutiérrez Abascal, Madrid, Spain
- Centre d’Estudis Avançats de Blanes (CEAB-CSIC), C. d’Accés Cala Sant Francesc, Blanes, Spain
| | - Enrique Macpherson
- Centre d’Estudis Avançats de Blanes (CEAB-CSIC), C. d’Accés Cala Sant Francesc, Blanes, Spain
| | - David Buckley
- Museo Nacional de Ciencias Naturales (MNCN-CSIC), José Gutiérrez Abascal, Madrid, Spain
- Centre d’Estudis Avançats de Blanes (CEAB-CSIC), C. d’Accés Cala Sant Francesc, Blanes, Spain
| | - Annie Machordom
- Museo Nacional de Ciencias Naturales (MNCN-CSIC), José Gutiérrez Abascal, Madrid, Spain
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Amador L, Parada A, D'Elía G, Guayasamin JM. Uncovering hidden specific diversity of Andean glassfrogs of the Centrolene buckleyi species complex (Anura: Centrolenidae). PeerJ 2018; 6:e5856. [PMID: 30402351 PMCID: PMC6215445 DOI: 10.7717/peerj.5856] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/16/2018] [Accepted: 10/02/2018] [Indexed: 11/20/2022] Open
Abstract
The glassfrog Centrolene buckleyi has been recognized as a species complex. Herein, using coalescence-based species delimitation methods, we evaluate the specific diversity within this taxon. Four coalescence approaches (generalized mixed Yule coalescents, Bayesian general mixed Yule-coalescent, Poisson tree processes, and Bayesian Poisson tree processes) were consistent with the delimitation results, identifying four lineages within what is currently recognized as C. buckleyi. We propose three new candidate species that should be tested with nuclear markers, morphological, and behavioral data. In the meantime, for conservation purposes, candidate species should be considered evolutionary significant units, in light of observed population crashes in the C. buckleyi species complex. Finally, our results support the validity of C. venezuelense, formerly considered as a subspecies of C. buckleyi.
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Affiliation(s)
- Luis Amador
- Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Valdivia, Chile.,Departamento de Investigación Científica, Universidad Laica Vicente Rocafuerte de Guayaquil, Guayaquil, Ecuador
| | - Andrés Parada
- Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Valdivia, Chile
| | - Guillermo D'Elía
- Instituto de Ciencias Ambientales y Evolutivas, Universidad Austral de Chile, Valdivia, Chile
| | - Juan M Guayasamin
- Instituto BIÓSFERA-USFQ, Laboratorio de Biología Evolutiva, Colegio de Ciencias Biológicas y Ambientales COCIBA, Universidad San Francisco de Quito, Quito, Ecuador.,Centro de Investigación de la Biodiversidad y Cambio Climático, Ingeniería en Biodiversidad y Recursos Genéticos, Facultad de Ciencias del Medio Ambiente, Universidad Tecnológica Indoamérica, Quito, Ecuador
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10
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Estevan C, Hepp LU, Decian VS, Fornel R. Does the landscape surrounding streams affect the occurrence of freshwater crabs? A case study of the genus Aegla (Crustacea: Decapoda: Anomura) in subtropical basins. IHERINGIA. SERIE ZOOLOGIA 2018. [DOI: 10.1590/1678-4766e2018024] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
ABSTRACT Changes in the landscape where watersheds are located may affect the stream biota in different ways. In order to explore this idea, we collected freshwater crabs of the genus Aegla Leach, 1820 in subtropical region of southern Brazil. We also measured a number of landscape features and physico-chemical variables in the collection streams and surroundings in order to ascertain which factors affect the occurrence of these crustaceans. A total of 167 individuals of Aegla were collected in 21 streams. The collection was comprised of three species: A. odebrechtii, A. platensis, and A. singularis. The occurrence of A. platensis was influenced by physico-chemical variables (total carbon and total organic carbon) and stream morphometry factors (level curves sum). The occurrence of A. singularis was influenced by land use (pasture and exposed soil and agriculture) and the stream morphometry (level curves sum). Only a small number of A. odebrechtii were collected and their occurrence was influenced by land use (pasture and exposed soil and agriculture). The topography of the area studied limits the types of land use and areas that are less favorable for agriculture (more hilly areas) are have more riparian vegetation (or less anthropic stress). As a result, these areas are less subject to changes in water quality, which is reflected in the distribution of Aegla species.
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Affiliation(s)
- Cassiano Estevan
- Universidade Regional Integrada do Alto Uruguai e das Missões, Brazil
| | - Luiz U. Hepp
- Universidade Regional Integrada do Alto Uruguai e das Missões, Brazil
| | | | - Rodrigo Fornel
- Universidade Regional Integrada do Alto Uruguai e das Missões, Brazil
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11
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Chakona A, Kadye WT, Bere T, Mazungula DN, Vreven E. Evidence of hidden diversity and taxonomic conflicts in five stream fishes from the Eastern Zimbabwe Highlands freshwater ecoregion. Zookeys 2018:69-95. [PMID: 29955212 PMCID: PMC6019476 DOI: 10.3897/zookeys.768.21944] [Citation(s) in RCA: 12] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/30/2018] [Accepted: 04/25/2018] [Indexed: 11/25/2022] Open
Abstract
Stream fishes of the Eastern Afromontane region are among the least studied vertebrates in this region, despite the potential for harbouring cryptic diversity. The present study examined mitochondrial cytochrome oxidase subunit I (COI) sequence divergence in 153 specimens of stream fishes belonging to four genera and three families, [(Amphilius and Zaireichthys (Amphiliidae); Chiloglanis (Mochokidae); and Hippopotamyrus (Mormyridae)], in the Eastern Zimbabwe Highlands (EZH) freshwater ecoregion to explore the extent to which the current taxonomy conceals the ichthyofaunal diversity in the region. The General Mixed Yule Coalescent (GMYC) species delineation method identified 14 clusters within five currently recognised ‘species’ from the EZH ecoregion. Only one of these clusters represents a named species, while 13 of them represent candidate or undescribed species. Our results revealed that effective conservation of this region’s unique biota is limited by the incomplete knowledge of taxonomic diversity and inaccurate mapping of species distribution ranges.
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Affiliation(s)
- Albert Chakona
- South African Institute for Aquatic Biodiversity, Private Bag 1015, Grahamstown, South Africa, 6140.,Department of Ichthyology and Fisheries Science, Rhodes University, P.O. Box 94, Grahamstown, South Africa, 6140
| | - Wilbert T Kadye
- Department of Ichthyology and Fisheries Science, Rhodes University, P.O. Box 94, Grahamstown, South Africa, 6140
| | - Taurai Bere
- School of Wildlife, Ecology and Conservation, Chinhoyi University of Technology, P. Bag 7724, Chinhoyi, Zimbabwe
| | - Daniel N Mazungula
- South African Institute for Aquatic Biodiversity, Private Bag 1015, Grahamstown, South Africa, 6140.,Department of Ichthyology and Fisheries Science, Rhodes University, P.O. Box 94, Grahamstown, South Africa, 6140
| | - Emmanuel Vreven
- Royal Museum for Central Africa, Section of Vertebrates, Ichthyology, Leuvensesteenweg 13, 3080, Tervuren, Belgium.,KU Leuven, Department of Biology, Laboratory of Biodiversity and Evolutionary Genomics, Deberiotstraat 32, 3000 Leuven, Belgium
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12
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Zimmermann BL, Crivellaro MS, Hauschild CB, Bartholomei-Santos ML, Crandall KA, Pérez-Losada M, Giri F, Collins P, Santos S. Phylogeography reveals unexpectedly low genetic diversity in a widely distributed species: the case of the freshwater crab Aegla platensis (Decapoda: Anomura). Biol J Linn Soc Lond 2018. [DOI: 10.1093/biolinnean/blx166] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Affiliation(s)
- Bianca L Zimmermann
- Programa de Pós-graduação em Biodiversidade Animal, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Marcelo S Crivellaro
- Programa de Pós-graduação em Biodiversidade Animal, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Caroline B Hauschild
- Programa de Pós-graduação em Biodiversidade Animal, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Marlise L Bartholomei-Santos
- Programa de Pós-graduação em Biodiversidade Animal, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
| | - Keith A Crandall
- Computational Biology Institute, George Washington University, Ashburn, VA, USA
- Department of Invertebrate Zoology, US National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
| | - Marcos Pérez-Losada
- Computational Biology Institute, George Washington University, Ashburn, VA, USA
- Department of Invertebrate Zoology, US National Museum of Natural History, Smithsonian Institution, Washington, DC, USA
- CIBIO-InBIO, Centro de Investigação em Biodiversidade e Recursos Genéticos, Vairão, Portugal
| | - Federico Giri
- Laboratorio de Macrocrustáceos, Instituto Nacional de Limnología, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Pablo Collins
- Laboratorio de Macrocrustáceos, Instituto Nacional de Limnología, Consejo Nacional de Investigaciones Científicas y Técnicas, Universidad Nacional del Litoral, Santa Fe, Argentina
| | - Sandro Santos
- Programa de Pós-graduação em Biodiversidade Animal, Universidade Federal de Santa Maria, Santa Maria, RS, Brazil
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