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Santos Z, Oliveira LS, Cajado RA, Silva FKS, Silva LVF, Zacardi DM. Early ontogeny of the commercially valuable fish red-bellied pacu Piaractus brachypomus (Characiformes, Serrasalmidae) from the Amazon, Brazil. JOURNAL OF FISH BIOLOGY 2023; 102:214-224. [PMID: 36254969 DOI: 10.1111/jfb.15253] [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: 04/26/2022] [Accepted: 10/17/2022] [Indexed: 06/16/2023]
Abstract
The initial development of the red-bellied pacu Piaractus brachypomus is described using morphological, meristic and morphometric characteristics. A total of 127 individuals were analysed (47 in the yolk-sac, 35 in pre-flexion, five in flexion, 20 in post-flexion and 20 in juvenile) with standard length varying between 2.92 and 48.61 mm. The larvae are born poorly developed and have a discoidal yolk at ~6.33 mm standard length. During early ontogeny, the mouth passes from terminal to subterminal and the anal opening reaches the vertical line over the midline region of the body. There are changes in body shape from long and moderate to deep, head length from small to large, and eye diameter from moderate to large. Dendritic chromatophores were present in the ventral, dorsal and upper part of the swim bladder in the early larval stages. Rounded spots are evident all over the body in juveniles. The total number of myomeres ranges from 39 to 41 (20-23 pre-anal, 17-20 post-anal). Through the morphometric relationships, it was evidenced that the greatest changes during the initial ontogeny of P. brachypomus occur in the transition from the post-flexion stage to the juvenile period, indicating changes in behaviour, foraging and physiology.
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Affiliation(s)
- Zaqueu Santos
- Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores, Instituto de Ciências e Tecnologia das Águas, Universidade Federal do Oeste do Pará, Santarém, Brazil
| | - Lucas S Oliveira
- Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores, Instituto de Ciências e Tecnologia das Águas, Universidade Federal do Oeste do Pará, Santarém, Brazil
- Programa de Pós-Graduação em Ecologia, Universidade Federal do Pará, Belém, Brazil
| | - Ruineris A Cajado
- Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores, Instituto de Ciências e Tecnologia das Águas, Universidade Federal do Oeste do Pará, Santarém, Brazil
- Programa de Pós-Graduação em Ecologia Aquática e Pesca, Universidade Federal do Pará, Belém, Brazil
| | - Fabíola K S Silva
- Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores, Instituto de Ciências e Tecnologia das Águas, Universidade Federal do Oeste do Pará, Santarém, Brazil
| | - Lenise V F Silva
- Laboratório Multiusuário de Análises Multifuncionais, Instituto de Ciências e Tecnologia das Águas, Universidade Federal do Oeste do Pará, Santarém, Brazil
| | - Diego M Zacardi
- Laboratório de Ecologia do Ictioplâncton e Pesca em Águas Interiores, Instituto de Ciências e Tecnologia das Águas, Universidade Federal do Oeste do Pará, Santarém, Brazil
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Taphorn DC, Liverpool E, Lujan NK, DoNascimiento C, Hemraj DD, Crampton WGR, Kolmann MA, Fontenelle JP, de Souza LS, Werneke DC, Ram M, Bloom DD, Sidlauskas BL, Holm E, Lundberg JG, Sabaj MH, Bernard C, Armbruster JW, López-Fernández H. Annotated checklist of the primarily freshwater fishes of Guyana. PROCEEDINGS OF THE ACADEMY OF NATURAL SCIENCES OF PHILADELPHIA 2022. [DOI: 10.1635/053.168.0101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/07/2022]
Affiliation(s)
| | - Elford Liverpool
- Department of Biology, Faculty of Natural Sciences, University of Guyana, Turkeyen, East Coast Demerara, 413741, Georgetown, Guyana.
| | - Nathan K. Lujan
- Department of Natural History, Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario, M5S 2C6, Canada and Department of Ecology and Evolutionary Biology, University of Toronto, 25 Willcocks Street, Toronto, Ontario, M5S 3B2, Canada
| | - Carlos DoNascimiento
- Universidad de Antioquia, Grupo de Ictiología, Instituto de Biología, Calle 67 No. 53-108, Medellín, Antioquia, Colombia
| | - Devya D. Hemraj
- Centre for the Study of Biological Diversity, Department of Biology, Faculty of Natural Sciences, University of Guyana, Turkeyen Campus, Greater Georgetown, Guyana
| | | | - Matthew A. Kolmann
- Department of Biology, University of Louisville, Louisville, KY, 40292, USA
| | - João Pedro Fontenelle
- University of Toronto, Institute of Forestry and Conservation, 33 Willcocks St. Office 4004, M5S 3E8, Toronto, ON, Canada
| | - Lesley S. de Souza
- Field Museum of Natural History, 1400 S. Lake Shore, Chicago, IL, 60605 USA
| | - David C. Werneke
- Department of Biological Sciences, 101 Rouse, Auburn University, Auburn, AL, 36849, USA
| | - Mark Ram
- Department of Biology, Faculty of Natural Sciences, University of Guyana, Turkeyen Campus, Greater Georgetown, Guyana
| | - Devin D. Bloom
- Department of Biological Sciences and Institute of the Environment & Sustainability, Western Michigan University, Kalamazoo, MI, 49008-5410, USA
| | - Brian L. Sidlauskas
- Oregon State University, Department of Fisheries, Wildlife and Conservation Sciences, 104 Nash Hall, Corvallis, Oregon, 97331-3803 USA and Department of Vertebrate Zoology, National Museum of Natural History, Smithsonian Institution, Washington, Dist
| | - Erling Holm
- Department of Natural History, Royal Ontario Museum, 100 Queen's Park, Toronto, Ontario, M5S 2C6, Canada
| | - John G. Lundberg
- The Academy of Natural Sciences of Drexel University, 1900 Benjamin Franklin Parkway, Philadelphia, PA, 19103, USA
| | - Mark H. Sabaj
- The Academy of Natural Sciences of Drexel University, 1900 Benjamin Franklin Parkway, Philadelphia, PA, 19103, USA
| | - Calvin Bernard
- Department of Biology, Faculty of Natural Sciences, University of Guyana, Turkeyen Campus, Greater Georgetown, Guyana
| | | | - Hernán López-Fernández
- Department of Ecology and Evolutionary Biology and Museum of Zoology, University of Michigan, 1105 North University Ave. Ann Arbor, MI, 48109, USA
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Lozano AP, Lasso-Alcalá OM, Bittencourt PS, Taphorn DC, Perez N, Farias IP. A new species of Astronotus (Teleostei, Cichlidae) from the Orinoco River and Gulf of Paria basins, northern South America. Zookeys 2022; 1113:111-152. [PMID: 36762228 PMCID: PMC9848875 DOI: 10.3897/zookeys.1113.81240] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/29/2022] [Accepted: 05/15/2022] [Indexed: 11/12/2022] Open
Abstract
Based on morphological and molecular analysis of Astronotus species, a new species is described from the Orinoco River and Gulf of Paria basins in Venezuela and Colombia. Morphologically, it differs from Astronotuscrassipinnis and Astronotusocellatus in pre-orbital depth, caudal peduncle depth, head width, and caudal peduncle length, with significant differences in average percentage values. Osteologically, it differs from the two described species by lacking a hypurapophysis on the parahypural bone (hypural complex) and having two or three supraneural bones. Another characteristic that helps diagnose the new species is the morphology of the sagitta otolith, which is oval with crenulated dorsal and ventral margins and a rounded posterior edge. Genetically, the new species is distinct from all the other lineages previously proposed for the genus, delimited by five single locus species delimitation methods, and also has unique diagnostic nucleotides. Phylogenetic analyses support the monophyly of the new species as well as all other species/lineages. Astronotus species have considerable genetic, anatomical, and sagitta otolith shape differences, but have few significant traditional morphometric and meristic differences, because there is high variability in counts of spines, soft dorsal-fin rays, and lateral-line scales. It is clear that this new species is genetically and anatomically differentiated from all other species within the genus, and deserves recognition as a new valid species.
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Affiliation(s)
- Alfredo Perez Lozano
- Instituto de Ciências Biológicas e da Saúde, Universidade Federal de Alagoas (UFAL), Maceió, BrazilUniversidade Federal de AlagoasMaceióBrazil
| | - Oscar M. Lasso-Alcalá
- Museo de Historia Natural La Salle, Fundación La Salle de Ciencias Naturales (MHNLS), Caracas, VenezuelaMuseo de Historia Natural La SalleCaracasVenezuela
| | - Pedro S. Bittencourt
- Laboratório de Evolução e Genética Animal, Universidade Federal do Amazonas (UFAM), Manaus, BrazilUniversidade Federal do AmazonasManausBrazil
| | - Donald C. Taphorn
- BioCentro, Universidad Nacional Experimental de los Llanos Occidentales Ezequiel Zamora (UNELLEZ), Guanare, Portuguesa, VenezuelaUniversidad Nacional Experimental de los Llanos Occidentales Ezequiel ZamoraGuanareVenezuela
| | - Nayibe Perez
- BioCentro, Universidad Nacional Experimental de los Llanos Occidentales Ezequiel Zamora (UNELLEZ), Guanare, Portuguesa, VenezuelaUniversidad Nacional Experimental de los Llanos Occidentales Ezequiel ZamoraGuanareVenezuela
| | - Izeni Pires Farias
- Laboratório de Evolução e Genética Animal, Universidade Federal do Amazonas (UFAM), Manaus, BrazilUniversidade Federal do AmazonasManausBrazil
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Abstract
Since their inception, DNA barcodes have become a powerful tool for understanding the biodiversity and biology of aquatic species, with multiple applications in diverse fields such as food security, fisheries, environmental DNA, conservation, and exotic species detection. Nevertheless, most aquatic ecosystems, from marine to freshwater, are understudied, with many species disappearing due to environmental stress, mostly caused by human activities. Here we highlight the progress that has been made in studying aquatic organisms with DNA barcodes, and encourage its further development in assisting sustainable use of aquatic resources and conservation.
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Phylogenomics of the Neotropical fish family Serrasalmidae with a novel intrafamilial classification (Teleostei: Characiformes). Mol Phylogenet Evol 2020; 153:106945. [DOI: 10.1016/j.ympev.2020.106945] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2020] [Revised: 08/14/2020] [Accepted: 08/21/2020] [Indexed: 01/04/2023]
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Kolmann MA, Hughes LC, Hernandez LP, Arcila D, Betancur-R R, Sabaj MH, López-Fernández H, Ortí G. Phylogenomics of Piranhas and Pacus (Serrasalmidae) Uncovers How Dietary Convergence and Parallelism Obfuscate Traditional Morphological Taxonomy. Syst Biol 2020; 70:576-592. [PMID: 32785670 DOI: 10.1093/sysbio/syaa065] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/03/2020] [Revised: 07/30/2020] [Accepted: 08/03/2020] [Indexed: 02/06/2023] Open
Abstract
The Amazon and neighboring South American river basins harbor the world's most diverse assemblages of freshwater fishes. One of the most prominent South American fish families is the Serrasalmidae (pacus and piranhas), found in nearly every continental basin. Serrasalmids are keystone ecological taxa, being some of the top riverine predators as well as the primary seed dispersers in the flooded forest. Despite their widespread occurrence and notable ecologies, serrasalmid evolutionary history and systematics are controversial. For example, the sister taxon to serrasalmids is contentious, the relationships of major clades within the family are inconsistent across different methodologies, and half of the extant serrasalmid genera are suggested to be non-monophyletic. We analyzed exon capture to reexamine the evolutionary relationships among 63 (of 99) species across all 16 serrasalmid genera and their nearest outgroups, including multiple individuals per species to account for cryptic lineages. To reconstruct the timeline of serrasalmid diversification, we time-calibrated this phylogeny using two different fossil-calibration schemes to account for uncertainty in taxonomy with respect to fossil teeth. Finally, we analyzed diet evolution across the family and comment on associated changes in dentition, highlighting the ecomorphological diversity within serrasalmids. We document widespread non-monophyly of genera within Myleinae, as well as between Serrasalmus and Pristobrycon, and propose that reliance on traits like teeth to distinguish among genera is confounded by ecological homoplasy, especially among herbivorous and omnivorous taxa. We clarify the relationships among all serrasalmid genera, propose new subfamily affiliations, and support hemiodontids as the sister taxon to Serrasalmidae. [Characiformes; exon capture; ichthyochory; molecular time-calibration; piscivory.].
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Affiliation(s)
- M A Kolmann
- Dept of Biological Sciences, George Washington University, 2029 G St. NW, Washington, DC 20052, USA.,Dept of Natural History, Royal Ontario Museum, 100 Queens Park, Toronto, ON M5S 2C6, Canada
| | - L C Hughes
- Dept of Biological Sciences, George Washington University, 2029 G St. NW, Washington, DC 20052, USA.,Dept of Ichthyology, Smithsonian National Museum of Natural History, 10th St. & Constitution Ave. NW, Washington, DC 20560, USA
| | - L P Hernandez
- Dept of Biological Sciences, George Washington University, 2029 G St. NW, Washington, DC 20052, USA
| | - D Arcila
- Dept of Ichthyology, Sam Noble Museum, 2401 Chautauqua Ave, Norman, OK 73072, USA.,Dept of Biology, University of Oklahoma, 660 Parrington Oval, Norman, OK 73019, USA
| | - R Betancur-R
- Dept of Ichthyology, Sam Noble Museum, 2401 Chautauqua Ave, Norman, OK 73072, USA.,Dept of Biology, University of Oklahoma, 660 Parrington Oval, Norman, OK 73019, USA
| | - M H Sabaj
- Dept of Ichthyology, The Academy of Natural Sciences of Drexel University, 1900 Benjamin Franklin Pkwy, Philadelphia, PA 19103, USA
| | - H López-Fernández
- Museum of Zoology, University of Michigan, 1105 North University Dr., Ann Arbor, MI 48109, USA
| | - G Ortí
- Dept of Biological Sciences, George Washington University, 2029 G St. NW, Washington, DC 20052, USA.,Dept of Ichthyology, Smithsonian National Museum of Natural History, 10th St. & Constitution Ave. NW, Washington, DC 20560, USA
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Merckelbach LM, Borges LMS. Make every species count: fastachar software for rapid determination of molecular diagnostic characters to describe species. Mol Ecol Resour 2020; 20:1761-1768. [PMID: 32623815 DOI: 10.1111/1755-0998.13222] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2020] [Revised: 06/25/2020] [Accepted: 06/29/2020] [Indexed: 11/29/2022]
Abstract
Only a fraction of species found so far has been described, particularly cryptic species uncovered by molecular data. The latter might require the use of molecular data for its diagnosis, but it is important to make use of the diagnostic content of the molecular data itself. The molecular character-based model provides discrete molecular diagnostic characters within DNA sequences that can be used in species descriptions fulfilling the requirement of most codes of nomenclature for a character-based description of species. Here, we introduce fastachar, a software developed to extract molecular diagnostic characters from one or several taxonomically informative DNA markers of a selected taxon compared with those of other taxa in a single step. The input data consist of a single file with aligned sequences in the fasta format, which can be created using alignment software such as mega or geneious. fastachar is an easy-to-use software with a graphical interface. Thus, the software does not require the user to have any knowledge of the underlying programming environment (Python). We hope this software, based on the method proposed by Jörger and Schrödl (Frontiers in Zoology, 10, 59, 2013) to describe cryptic species, will encourage researchers to take the final step in taxonomy: the formal description of species. We propose the use of this method and fastachar also for the inclusion of molecular data in the description of any species. fastachar is released as open-source software under GNU General Public License V3 and is freely available for all major operating systems from https://github.com/smerckel/FastaChar.
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Affiliation(s)
- Lucas M Merckelbach
- Centre for Materials and Coastal Research, Helmholtz-Zentrum Geesthacht, Geesthacht, Germany
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