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Sousa TPD, Bialetzki A, Mateus LADF. Dynamics of fish larvae recruitment in the hydrographic basin of the Paraguay River in western Brazil. NEOTROPICAL ICHTHYOLOGY 2023. [DOI: 10.1590/1982-0224-2022-0034] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/08/2023]
Abstract
Abstract The conservation of fish assemblages depends on the longitudinal and lateral connectivity between riverine habitats, in particular during the breeding season and the initial development. This study investigated the composition and spatio-temporal structure in the ichthyoplankton of the hydrographic basin of the Paraguay River in western Brazil to identify the local spawning grounds and the importance of the longitudinal connectivity of economically valuable migratory species. Data were collected at 10 sites between two breeding seasons (2017/2018 and 2018/2019). Were collected 8,635 larvae, representing 55 taxa in 25 families, including the migratory species Brycon hilarii, Hemisorubim platyrhynchos, Piaractus mesopotamicus, Prochilodus lineatus, Pseudoplatystoma spp., Salminus brasiliensis, Sorubim lima, and Zungaro jahu, which are important fishery resources, with the highest larval densities being recorded between November and January. The Sepotuba, Paraguay, Jauru, and Cabaçal rivers were the areas of greatest connectance, and should thus be considered critical for the conservation of the longitudinal connectivity of this fluvial system, indicating that the migratory species spawn upriver. More efficient fisheries management mechanisms are needed, respecting the spawning period of migratory species, maintaining quality and longitudinal connectivity between habitats, and characteristics necessary for successful larval recruitment.
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Mariac C, Renno JF, Carmen Garcia-Davila, Vigouroux Y, Mejia E, Angulo C, Castro Ruiz D, Estivals G, Nolorbe C, García Vasquez A, Nuñez J, Cochonneau G, Flores M, Alvarado J, Vertiz J, Chota-Macuyama W, Sánchez H, Miranda G, Duponchelle F. Species-level ichthyoplankton dynamics for 97 fishes in two major river basins of the Amazon using quantitative metabarcoding. Mol Ecol 2021; 31:1627-1648. [PMID: 33949023 DOI: 10.1111/mec.15944] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2020] [Revised: 02/20/2021] [Accepted: 04/23/2021] [Indexed: 12/01/2022]
Abstract
The Amazon basin holds the world's largest freshwater fish diversity. Information on the intensity and timing of reproductive ecology of Amazonian fish is scant. We use a metabarcoding method by capture using a single probe to quantify species-level ichthyoplankton dynamics. We sampled the Marañón and the Ucayali rivers in Peru monthly for 2 years. We identified 97 species that spawned mainly during the flood start, the flood end or the receding periods, although some species had spawning activity in more than one period. This information was new for 40 of the species in the Amazon basin and 80 species in Peru. Most species ceased spawning for a month during a strong hydrological anomaly in January 2016, demonstrating the rapidity with which they react to environmental modifications during the breeding season. We also document another unreported event in the Amazon basin, the inverse phenology of species belonging to one genus (Triportheus). Overall larval flow in the Marañón was more than twice that of the Ucayali, including for most commercial species (between two and 20 times higher), whereas the Ucayali accounts for ~80% of the fisheries landings in the region. Our results are discussed in the light of the main anthropogenic threats to fishes, hydropower dam construction and the Hidrovía Amazónica, and should serve as a pre-impact baseline.
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Affiliation(s)
- Cédric Mariac
- DIADE, Univ Montpellier, CIRAD, IRD, Montpellier, France.,Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France
| | - Jean-François Renno
- DIADE, Univ Montpellier, CIRAD, IRD, Montpellier, France.,Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France
| | - Carmen Garcia-Davila
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,Laboratorio de Biología y Genética Molecular (LBGM), Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Perú
| | - Yves Vigouroux
- DIADE, Univ Montpellier, CIRAD, IRD, Montpellier, France.,Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France
| | - Eduardo Mejia
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,Laboratorio de Biología y Genética Molecular (LBGM), Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Perú
| | - Carlos Angulo
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,Laboratorio de Biología y Genética Molecular (LBGM), Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Perú
| | - Diana Castro Ruiz
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,Laboratorio de Biología y Genética Molecular (LBGM), Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Perú
| | - Guillain Estivals
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,Laboratorio de Biología y Genética Molecular (LBGM), Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Perú
| | - Christian Nolorbe
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,Laboratorio de Biología y Genética Molecular (LBGM), Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Perú
| | - Aurea García Vasquez
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,Laboratorio de Biología y Genética Molecular (LBGM), Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Perú
| | - Jesus Nuñez
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,BOREA, MNHN, SU, UA, CNRS, IRD, Université de Caen-Normandie, France
| | | | - Mayra Flores
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,Laboratorio de Biología y Genética Molecular (LBGM), Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Perú
| | - Jhon Alvarado
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,Laboratorio de Biología y Genética Molecular (LBGM), Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Perú
| | - José Vertiz
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,Laboratorio de Biología y Genética Molecular (LBGM), Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Perú
| | - Werner Chota-Macuyama
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,Laboratorio de Biología y Genética Molecular (LBGM), Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Perú
| | - Homero Sánchez
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,Laboratorio de Biología y Genética Molecular (LBGM), Instituto de Investigaciones de la Amazonía Peruana (IIAP), Iquitos, Perú
| | - Guido Miranda
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,Wildlife Conservation Society, Bolivia Program, La Paz, Bolivia.,Unidad de Limnología, Instituto de Ecología, Universidad Mayor de San Andrés, La Paz, Bolivia
| | - Fabrice Duponchelle
- Laboratoire Mixte International - Evolution et Domestication de l'Ichtyofaune Amazonienne (LMI - EDIA), IIAP, UAGRM, IRD, Montpellier, France.,MARBEC, CNRS, Ifremer, IRD, Univ Montpellier, Montpellier, France
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Sanches PV, Gogola TM, Silva RO, Topan DA, Dos Santos Picapedra PH, Piana PA. Arms as areas for larval development of migratory fish species in a Neotropical reservoir and the influence of rainfall over abundances. JOURNAL OF FISH BIOLOGY 2020; 97:1306-1316. [PMID: 32725675 DOI: 10.1111/jfb.14474] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/25/2020] [Revised: 06/18/2020] [Accepted: 07/25/2020] [Indexed: 06/11/2023]
Abstract
The aim of the present study was to verify the use of the arms of the Itaipu Reservoir as areas of initial development for migratory fish species and to assess the relationship between rainfall and the spawning of migratory fish. Accordingly, fish larvae were collected from five arms of the reservoir from 2009 to 2016 using 0.5 mm plankton nets. Density was standardized as the number of larvae per 10 m3 filtered water, and the captured larval and juvenile specimens were identified at the lowest-possible taxonomic level. The larvae were also classified according to the degree of development and notochord flexion stage: larval vitelline, pre-flexion, flexion and post-flexion. To evaluate the distribution of larval abundance and the developmental stage along the longitudinal gradients of the arms, the data were evaluated using a set of nested linear models, following the AIC and Bayesian information criteria. In addition, an analysis of covariance was performed to investigate the influence of rainfall on the larval abundance of migratory species. During sampling, several species of economic and conservation interest such as Salminus brasiliensis and Pseudoplatystoma corruscans were collected. The larvae of the migratory fish taxa were captured from all sampled arms, which indicate them as areas of initial development. Nevertheless, it was observed that larval density increases from fluvial towards lacustrine zones inside the arms. Also, the present study verified that species, even in lentic environments, respond positively to rainfall stimuli in a manner similar to that exhibited by conspecifics in lotic environments. Such results reinforce the necessity of the protection of arms aiming at the conservation of this main group of species impaired by the construction of dams.
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Affiliation(s)
- Paulo Vanderlei Sanches
- Graduate Program in Fishery Resources and Fishing Engineering, Engineering and Exact Sciences Center, State University of Western Paraná, Toledo, Brazil
- Graduate Program in Environmental Sciences, Engineering and Exact Sciences Center, State University of Western Paraná, Toledo, Brazil
- Research Group on Fishery Resources and Limnology (GERPEL), Neotropical Institute for Environmental Research (INEO), Toledo, Brazil
- Undergraduate in Fisheries Engineering, Engineering and Exact Sciences Center, State University of Western Paraná, Toledo, Brazil
| | - Tatiane Mary Gogola
- Graduate Program in Fishery Resources and Fishing Engineering, Engineering and Exact Sciences Center, State University of Western Paraná, Toledo, Brazil
- Research Group on Fishery Resources and Limnology (GERPEL), Neotropical Institute for Environmental Research (INEO), Toledo, Brazil
- Undergraduate in Fisheries Engineering, Engineering and Exact Sciences Center, State University of Western Paraná, Toledo, Brazil
| | - Rafael Olimpio Silva
- Graduate Program in Fishery Resources and Fishing Engineering, Engineering and Exact Sciences Center, State University of Western Paraná, Toledo, Brazil
| | - Dhyego Amilton Topan
- Graduate Program in Fishery Resources and Fishing Engineering, Engineering and Exact Sciences Center, State University of Western Paraná, Toledo, Brazil
| | - Pablo Henrique Dos Santos Picapedra
- Graduate Program in Fishery Resources and Fishing Engineering, Engineering and Exact Sciences Center, State University of Western Paraná, Toledo, Brazil
- National Postdoctoral Program, Coordination for the Improvement of Higher Education Personnel (CAPES), Brazil
| | - Pitágoras Augusto Piana
- Graduate Program in Fishery Resources and Fishing Engineering, Engineering and Exact Sciences Center, State University of Western Paraná, Toledo, Brazil
- Research Group on Fishery Resources and Limnology (GERPEL), Neotropical Institute for Environmental Research (INEO), Toledo, Brazil
- Undergraduate in Fisheries Engineering, Engineering and Exact Sciences Center, State University of Western Paraná, Toledo, Brazil
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David-Ruales CA, Machado-Fracalossi D, Betancur-Gonzalez EM, Rodríguez-Franco N, Castañeda-Álvarez G, Florez-Restrepo C, Vásquez-Torres W. Relaciones alométricas en estadios tempranos de la especie Brycon moorei Steindachner (Characidae), en condiciones controladas. ACTUALIDADES BIOLÓGICAS 2020. [DOI: 10.17533/udea.acbi.v42n113a02] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Para Brycon moorei, los datos sobre morfometría, en estados iniciales del desarrollo, son inexistentes. El objetivo de este estudio fue establecer las principales relaciones alométricas en los estadios tempranos de B. moorei. Se analizaron 12 variables merísticas en un tiempo experimental que transcurrió desde la eclosión hasta los 15 días post-eclosión. En el estadio larval vitelino (LV) se registró, en promedio: longitud total (LT) de 4,74 ± 0,05 mm; longitud estándar (LE) de 4,21 ± 0,07 mm; longitud del hocico (SnL) 0,3 ± 0,01; diámetro del ojo (ED) 0,37 ± 0,007 mm; longitud de la cabeza (HL) 1,02 ± 0,04 mm; altura de la cabeza (HH) 0,88 ± 0,069 mm; altura del cuerpo (BH) 1,26 ± 0,01 mm; longitud hocico-aleta pectoral (SnPF) 1,35 ± 0,034; ausencia de aletas pélvicas, anales y dorsal y el peso fue de 1,8 ± 0,2 mg. En la etapa juvenil (J), las medidas fueron: LT de 25,66 ± 0,64 mm; LE de 21,49 ± 0,63 mm; SnL de 1,69 ± 0,059 mm; ED de 1,71 ± 0,048 mm; HL de 6,33 ± 0,21 mm; HH de 4,89 ± 0,47 mm; BH de 6,13 ± 0,17 mm; SnPF de 6,48 ± 0,19 mm; SnPeF de 10,83 ± 0,28 mm; SnDF de 11,16 ± 0,33 mm; Sn-AF de 3,68 ± 0,34 mm; el peso fue de 221,6 ± 15,84 mg. Para LV, el número de miómeros pre-anales fue 28,65 ± 4,7; los post-anales fueron 23,85 ± 4,27, con un total de 52,47 ± 8,34; para J los miómeros no fueron visibles. Esta información es fundamental para fines ecológicos y productivos en B. moorei.
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Scarabotti P, Govezensky T, Bolcatto P, Barrio RA. Universal model for the skin colouration patterns of neotropical catfishes of the genus Pseudoplatystoma. Sci Rep 2020; 10:12445. [PMID: 32709921 PMCID: PMC7381642 DOI: 10.1038/s41598-020-68700-0] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2020] [Accepted: 06/23/2020] [Indexed: 11/29/2022] Open
Abstract
Fish skin colouration has been widely studied because it involves a variety of processes that are important to the broad field of the developmental biology. Mathematical modelling of fish skin patterning first predicted the existence of morphogens and helped to elucidate the mechanisms of pattern formation. The catfishes of the genus Pseudoplatystoma offer a good biological study model, since its species exhibit the most spectacular and amazing variations of colour patterns on the skin. They present labyrinths, closed loops (or cells), alternate spots and stripes, only spots and combinations of these. We have extended a well known mathematical model to study the skin of Pseudoplatystoma. The basic model is a two component, non-linear reaction diffusion system that presents a richness of bifurcations. The extended model assumes that there are two interacting cell/tissue layers in which morphogens diffuse and interact giving rise to the skin colouration pattern. We have found that by varying only two parameters we are able to accurately reproduce the distinct patterns found in all species of Pseudoplatystoma. The histological analysis of skin samples of two species of this genus, with different patterns, revealed differences on the disposition of the colouration cells that are consistent with our theoretical predictions.
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Affiliation(s)
- Pablo Scarabotti
- Instituto Nacional de Limnología, UNL, CONICET, FHUC, Ruta 168 Km 0, Ciudad Universitaria, S3001XAI, Santa Fe, Argentina.
| | - Tzipe Govezensky
- Instituto de Investigaciones Biomédicas, Universidad Nacional Autónoma de México, 04510, CD.MX., Mexico
| | - Pablo Bolcatto
- Instituto de Matemática Aplicada del Litoral, UNL, CONICET, FHUC, IMAL, Colectora Ruta Nac. 168 km 0, Paraje El Pozo, S3007ABA, Santa Fe, Argentina
| | - Rafael A Barrio
- Instituto de Física, U.N.A.M., Apdo. Postal 20-36, 01000, CD.MX., Mexico
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