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Jense C, Adams M, Raadik TA, Waters JM, Morgan DL, Barmuta LA, Hardie SA, Deagle BE, Burridge CP. Cryptic diversity within two widespread diadromous freshwater fishes (Teleostei: Galaxiidae). Ecol Evol 2024; 14:e11201. [PMID: 38799386 PMCID: PMC11116845 DOI: 10.1002/ece3.11201] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/04/2023] [Revised: 03/03/2024] [Accepted: 03/19/2024] [Indexed: 05/29/2024] Open
Abstract
Identification of taxonomically cryptic species is essential for the effective conservation of biodiversity. Freshwater-limited organisms tend to be genetically isolated by drainage boundaries, and thus may be expected to show substantial cryptic phylogenetic and taxonomic diversity. By comparison, populations of diadromous taxa, that migrate between freshwater and marine environments, are expected to show less genetic differentiation. Here we test for cryptic diversity in Australasian populations (both diadromous and non-diadromous) of two widespread Southern Hemisphere fish species, Galaxias brevipinnis and Galaxias maculatus. Both mtDNA and nuclear markers reveal putative cryptic species within these taxa. The substantial diversity detected within G. brevipinnis may be explained by its strong climbing ability which allows it to form isolated inland populations. In island populations, G. brevipinnis similarly show deeper genetic divergence than those of G. maculatus, which may be explained by the greater abundance of G. maculatus larvae in the sea allowing more ongoing dispersal. Our study highlights that even widespread, 'high-dispersal' species can harbour substantial cryptic diversity and therefore warrant increased taxonomic and conservation attention.
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Affiliation(s)
- Charlotte Jense
- Discipline of Biological Sciences, School of Natural SciencesUniversity of TasmaniaHobartTasmaniaAustralia
| | - Mark Adams
- Evolutionary Biology UnitSouth Australian MuseumAdelaideSouth AustraliaAustralia
- School of Biological SciencesThe University of AdelaideAdelaideSouth AustraliaAustralia
| | - Tarmo A. Raadik
- Department of Energy, Environment and Climate ActionArthur Rylah Institute for Environmental ResearchHeidelbergVictoriaAustralia
| | | | - David L. Morgan
- Centre for Sustainable Aquatic Ecosystems, Harry Butler InstituteMurdoch UniversityMurdochWestern AustraliaAustralia
| | - Leon A. Barmuta
- Discipline of Biological Sciences, School of Natural SciencesUniversity of TasmaniaHobartTasmaniaAustralia
| | - Scott A. Hardie
- Discipline of Biological Sciences, School of Natural SciencesUniversity of TasmaniaHobartTasmaniaAustralia
| | - Bruce E. Deagle
- Australian National Fish CollectionCSIRO National Research Collections AustraliaHobartTasmaniaAustralia
| | - Christopher P. Burridge
- Discipline of Biological Sciences, School of Natural SciencesUniversity of TasmaniaHobartTasmaniaAustralia
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Escobar Camacho D, Barragán KS, Guayasamin JM, Gavilanes G, Encalada AC. New records of native and introduced fish species in a river basin of Western Ecuador, the Chocó-Darien Ecoregion, using DNA barcoding. PLoS One 2024; 19:e0298970. [PMID: 38457426 PMCID: PMC10923491 DOI: 10.1371/journal.pone.0298970] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2023] [Accepted: 02/01/2024] [Indexed: 03/10/2024] Open
Abstract
DNA barcoding, based on mitochondrial markers, is widely applied in species identification and biodiversity studies. The aim of this study was to establish a barcoding reference database of fishes inhabiting the Cube River from Western Ecuador in the Chocó-Darien Global Ecoregion (CGE), a threatened ecoregion with high diversity and endemism, and evaluate the applicability of using barcoding for the identification of fish species. Barcode sequences were obtained from seven orders, 17 families, 23 genera and 26 species, which were validated through phylogenetic analysis, morphological measurements, and literature review. Our results showed that 43% of fish species in this region are endemic, confirmed the presence of known species in the area, and included the addition of three new records of native (Hoplias microlepis, Rhamdia guatemalensis and Sicydium salvini) and an introduced species (Xiphophorus maculatus) to Ecuador. In addition, eight species were barcoded for the first time. Species identification based on barcoding and morphology showed discrepancy with species lists from previous studies in the CGE, suggesting that the current baseline of western fishes of Ecuador is still incomplete. Because this study analyzed fishes from a relatively small basin (165 km2), more molecular-based studies focusing on fish are needed to achieve a robust sequence reference library of species inhabiting Western Ecuador. The new sequences of this study will be useful for future comparisons and biodiversity monitoring, supporting the application of barcoding tools for studying fish diversity in genetically unexplored regions and to develop well-informed conservation programs.
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Affiliation(s)
- Daniel Escobar Camacho
- Laboratorio de Ecología Acuática, Instituto BIOSFERA, Universidad San Francisco de Quito, Quito, Ecuador
| | - Karla S. Barragán
- Laboratorio de Ecología Acuática, Instituto BIOSFERA, Universidad San Francisco de Quito, Quito, Ecuador
| | - Juan M. Guayasamin
- Laboratorio de Biología Evolutiva, Instituto BIOSFERA, Universidad San Francisco de Quito, Quito, Ecuador
| | - Gabriela Gavilanes
- Laboratorio de Biología Evolutiva, Instituto BIOSFERA, Universidad San Francisco de Quito, Quito, Ecuador
| | - Andrea C. Encalada
- Laboratorio de Ecología Acuática, Instituto BIOSFERA, Universidad San Francisco de Quito, Quito, Ecuador
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Seth JK, Roy S, Sura S, Puvala D, Mishra SS, Mohapatra A. Description of a new species of the genus Awaous Valenciennes, 1837 (Gobiiformes: Oxudercidae) from the middle stretch of the Mahanadi River, Odisha, India, with comments on the Awaous species from India. JOURNAL OF FISH BIOLOGY 2024; 104:548-563. [PMID: 37889122 DOI: 10.1111/jfb.15598] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/10/2023] [Revised: 10/06/2023] [Accepted: 10/25/2023] [Indexed: 10/28/2023]
Abstract
A new species of the genus Awaous (Oxudercidae), Awaous motla sp. nov., is described based on 18 specimens collected from the Mahanadi River near Sonepur, Subarnapur District, and 3 specimens from the same river near Boudh bridge, Boudh District of Odisha, India. This species is distinct from its congeners by having a combination of characteristics: relatively small eyes, diameter of 6.6-8.4 in head length (LH); robust and long snout, 2.0-2.6 in LH; eye diameter 2.7-4.1 in snout length; cephalic sensory pore system interrupted with eight pores; predorsal scales 13-15; longitudinal scale series 55-58; gill rakers 2 + 1 + (6-7) on the first gill arch; teeth small, conical, and in a single row on the upper jaw and multiserial (2-3) on the lower jaw. This species is also differentiated from some of its congeners in the nucleotide composition of the cytochrome c oxidase I gene by 8.3%-13.8% Kimura two-parameter (K2P) distance and belongs to a separate cluster in the maximum likelihood tree analysis. This finding is also supported by the species delimitation analysis based on Assemble Species by Automatic Partitioning. The new species holds high commercial value in its locality and needs special conservation attention for sustainable utilization.
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Affiliation(s)
- Jaya Kishor Seth
- Post Graduate Department of Zoology, Berhampur University, Berhampur, India
| | - Sanmitra Roy
- Post Graduate Department of Zoology, Berhampur University, Berhampur, India
| | - Sameer Sura
- Post Graduate Department of Zoology, Berhampur University, Berhampur, India
| | - Dilraj Puvala
- Post Graduate Department of Zoology, Berhampur University, Berhampur, India
| | | | - Anil Mohapatra
- Estuarine Biology Regional Centre, Zoological Survey of India, Ganjam, India
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Angulo A, Betts JT, Gonzlez-Alemn NJ, Castaeda E, Berghe EVANDEN, Elas DJ, McMahan CD, Matamoros WA. Continental fishes of Nicaragua: diversity, distribution and conservation status; with an annotated and illustrated checklist of species and an identification guide to families. Zootaxa 2023; 5376:1-89. [PMID: 38220798 DOI: 10.11646/zootaxa.5376.1.1] [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: 11/24/2023] [Indexed: 01/16/2024]
Abstract
Based on a combination of intensive literature review, electronic database searches, re-identification of museum specimens, and fieldwork, we provide an updated checklist of the continental fishes of Nicaragua. This checklist, systematically arranged at the ordinal and familial level, includes nomenclatural revisions, distributional information, conservation status, and when appropriate, cross-references to previous lists and revisionary works on the fish fauna of the country and region (Central America); illustrations and descriptions to the family level and color photographs of some representative species are also included. According to our results, the native Nicaraguan continental fish fauna is composed of 244 species, divided into 111 genera, 45 families, 24 orders, and two classes; increasing by 60 (i.e., 32.6%) the number of species originally reported by Villa (1982; i.e., the most comprehensive work published to date). The majority of the Nicaraguan native continental fish species, according to their supposed tolerance to salinity, are peripheral (68.9%), followed by secondary freshwater fishes (23.8%), and primary freshwater fishes (only 7.4%). Fish diversity in the 19 major river basins ranged between 21 and 90 species (mean = 58 species, median = 60); the Escondido (Es; 87 species), in the Atlantic, and the Pacfico de Nicaragua (PN; 90), in the Pacific, presented the highest species richness. Most species (188) are restricted to elevations between 0 and 100 meters above sea level (masl); only a few species (18), in contrast, were found at elevations greater than 500 masl (up to 780 masl). Fourteen species in this revision are listed as endemic to Nicaragua. Regarding their conservation status, 22 species (9.0%) are categorized, according to the International Union for Conservation of Nature (IUCN), as Data Deficient, 186 (76.2%) as Least Concern, and seven (2.9%) as Near Threatened; while 24 species (9.8%) are listed as Threatened, thirteen (5.3%) as Vulnerable, two (0.8%) as Endangered, and nine (3.7%) as Critically Endangered. Five species (2.0%) have not yet been evaluated. Six exotic species are also reported. Our results provide a framework for future taxonomic and biogeographic works on fishes from this country and region (Central America), particularly by providing up-to-date knowledge on nomenclature and distributions. In addition, the data provided in this revision will help to monitor fish distributional changes in the future due to human introductions and global change and will aid in conservation decisions concerning Nicaraguan continental fishes.
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Affiliation(s)
- Arturo Angulo
- Escuela de Biologa; Museo de Zoologa/Centro de Investigacin en Biodiversidad y Ecologa Tropical (CIBET) and Centro de Investigacin en Ciencias del Mar y Limnologa (CIMAR); Universidad de Costa Rica. 115012060; San Pedro de Montes de Oca; San Jos; Costa Rica.
| | - Joel T Betts
- Department of Fisheries and Wildlife; Michigan State University; 480 Wilson Rd #13; East Lansing; MI 48824; USA.
| | - Nstor J Gonzlez-Alemn
- Unidad de Gestin Tcnica de Proyectos - Oficina de Relaciones Internacionales y de Cooperacin Externa (ORICE/UGETEP); Bluefields Indian & Caribbean University (BICU). Barrio San Pedro; Avenida Universitaria; Bluefields; Nicaragua; P.O. Box 88.
| | - Edgar Castaeda
- Universidad Americana (UAM; Costado Noroeste Camino de Oriente; Managua; Nicaragua.
| | - Eric VAN DEN Berghe
- Department of Environment and Development; Zamorano Biodiversity Center. Zamorano University of Tegucigalpa; P.O. Box 93; Honduras.
| | - Diego J Elas
- Field Museum of Natural History (FMNH). Chicago; Illinois; United States of America.
| | - Caleb D McMahan
- Field Museum of Natural History (FMNH). Chicago; Illinois; United States of America.
| | - Wilfredo A Matamoros
- Instituto de Ciencias Biolgicas; Universidad de Ciencias y Artes de Chiapas (UNICACH). Tuxtla Gutirrez; Chiapas; Mxico.
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Correction to "Environmental DNA (eDNA) reveals potential for interoceanic fish invasions across the Panama Canal". Ecol Evol 2023; 13:e10697. [PMID: 38020676 PMCID: PMC10643768 DOI: 10.1002/ece3.10697] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2023] Open
Abstract
[This corrects the article DOI: 10.1002/ece3.9675.].
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Calixto-Rojas M, Lira-Noriega A, Rubio-Godoy M, Pérez-Ponce de León G, Pinacho-Pinacho CD. Delimitation and species discovery in the Profundulidae fish family: Using genetic, environmental and morphologic data to address taxonomic uncertainty. Mol Phylogenet Evol 2023:107856. [PMID: 37327830 DOI: 10.1016/j.ympev.2023.107856] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/10/2022] [Revised: 06/06/2023] [Accepted: 06/07/2023] [Indexed: 06/18/2023]
Abstract
The family Profundulidae includes some one of the most enigmatic freshwater fishes of Mesoamerica: despite many attempts, a robust phylogenetic framework to delimit species is lacking, mainly due to limited morphological variation within the group. The accumulation of molecular data of profundulid fishes has led to advances in the description of new taxa, but relatively less progress has been made estimating evolutionary and phylogenetic relationships for this fish family. Here, we adopt an integrative taxonomy approach including the use of nuclear and mitochondrial DNA sequences, morphometric and ecological data, to test species boundaries in profundulid fishes in the westernmost area of their known distribution range in the states of Guerrero and Oaxaca, Mexico. Using a combination of methods for species discovery and validation based on Bayesian gene tree topologies, our analyses support the delimitation of 15 valid species of profundulid fishes - a combination of previously described species validated by this study, the synonymy of unsupported taxa, and the description of two new species. Using species delimitation methods, examination of phenotypic variation, and ecological niche characterization, we also identify five potentially new lineages which require further evidence to be erected as new species. We demonstrate that the use of an integrative taxonomy approach provides a robust methodology to delimit species in a taxonomically complex group like Profundulidae. Accurate taxonomic and ecological information is crucial for the conservation of these microendemic fishes, as several species are endangered.
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Affiliation(s)
- Miguel Calixto-Rojas
- Doctorado en Ciencias, Instituto de Ecología, A.C., Red de Estudios Moleculares Avanzados, Carretera Antigua a Coatepec 351, El Haya, Xalapa, Veracruz 91073, Mexico.
| | - Andrés Lira-Noriega
- CONACyT Research Fellow, Instituto de Ecología A.C., Red de Estudios Moleculares Avanzados, Carretera Antigua a Coatepec 351, El Haya, Xalapa, Veracruz 91073, Mexico
| | - Miguel Rubio-Godoy
- Instituto de Ecología, A.C., Red de Biología Evolutiva, Carretera Antigua a Coatepec 351, El Haya, Xalapa, Veracruz 91073, Mexico
| | - Gerardo Pérez-Ponce de León
- Escuela Nacional de Estudios Superiores unidad Mérida, Universidad Nacional Autónoma de México, Km 4.5 Carretera Mérida-Tetiz, Municipio de Ucú, Yucatán 97357, Mexico
| | - Carlos D Pinacho-Pinacho
- CONACyT Research Fellow, Instituto de Ecología A.C., Red de Estudios Moleculares Avanzados, Carretera Antigua a Coatepec 351, El Haya, Xalapa, Veracruz 91073, Mexico
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Schreiber L, Castellanos‐Galindo GA, Robertson DR, Torchin M, Chavarria K, Laakmann S, Saltonstall K. Environmental DNA (eDNA) reveals potential for interoceanic fish invasions across the Panama Canal. Ecol Evol 2023; 13:e9675. [PMID: 36726876 PMCID: PMC9884569 DOI: 10.1002/ece3.9675] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/05/2022] [Revised: 11/18/2022] [Accepted: 12/05/2022] [Indexed: 02/03/2023] Open
Abstract
Interoceanic canals can facilitate biological invasions as they connect the world's oceans and remove dispersal barriers between bioregions. As a consequence, multiple opportunities for biotic exchange arise and the resulting establishment of migrant species often causes adverse ecological and economic impacts. The Panama Canal is a key region for biotic exchange as it connects the Pacific and Atlantic Oceans in Central America. In this study, we used two complementary methods (environmental DNA (eDNA) metabarcoding and gillnetting) to survey fish communities in this unique waterway. Using COI (cytochrome oxidase subunit I) metabarcoding, we detected a total of 142 fish species, including evidence for the presence of sixteen Atlantic and eight Pacific marine fish in different freshwater sections of the Canal. Of these, nine are potentially new records. Molecular data did not capture all species caught with gillnets, but generally provided a more complete image of the known fish fauna as more small-bodied fish species were detected. Diversity indices based on eDNA surveys revealed significant differences across different sections of the Canal reflecting in part the prevailing environmental conditions. The observed increase in the presence of marine fish species in the Canal indicates a growing potential for interoceanic fish invasions. The potential ecological and evolutionary consequences of this increase in marine fishes are not only restricted to the fish fauna in the Canal as they could also impact adjacent ecosystems in the Pacific and Atlantic Oceans.
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Affiliation(s)
- Lennart Schreiber
- Smithsonian Tropical Research InstituteBalboaPanama
- Faculty of Biology & ChemistryUniversity of BremenBremenGermany
| | - Gustavo A. Castellanos‐Galindo
- Smithsonian Tropical Research InstituteBalboaPanama
- Leibniz Institute of Freshwater Ecology and Inland Fisheries (IGB)BerlinGermany
| | | | - Mark Torchin
- Smithsonian Tropical Research InstituteBalboaPanama
| | | | - Silke Laakmann
- Helmholtz Institute for Functional Marine Biodiversity at the University of Oldenburg (HIFMB)OldenburgGermany
- Alfred‐Wegener‐Institute, Helmholtz Centre for Polar and Marine ResearchBremerhavenGermany
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