Consulta: creatorFacets:"Makrakis,Sergio"
Registros recuperados: 10
Data/hora: 02/06/2024 02:14:51

Desenvolvimento embrionário, larval e juvenil de Hemisorubim platyrhynchos (Siluriformes, Pimelodidae) da bacia do rio Paraná
Provedor de dados: Iheringia Série Zoologia
Autores: Andrade,Fernanda F.; Makrakis,Maristela C.; Lima,Ariane F. de; Assumpção,Lucileine de; Makrakis,Sergio; Pini,Suelen F. R.
O objetivo deste estudo foi descrever o desenvolvimento embrionário, larval e juvenil da jurupoca, Hemisorubim platyrhynchos (Valenciennes, 1840), bem como as mudanças nos padrões de crescimento alométrico durante a ontogenia inicial da espécie. Um total de 90 ovos, 210 larvas e 24 juvenis provenientes de reprodução induzida foram analisados quanto a variáveis morfométricas e merísticas, além do coeficiente de crescimento alométrico em relação à cabeça, tronco e cauda durante o período larval e juvenil inicial. Os ovos apresentaram diâmetro médio de 1,74 mm, espaço perivitelino amplo (21,29%), com média de 0,37 mm, e diâmetro médio do vitelo de 1,08 mm. O comprimento padrão (CP) das larvas variou de 3,47 a 11,85 mm, com a maioria das medidas apresentando...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Desenvolvimento inicial; Morfometria; Crescimento alométrico; Larvas de peixes.
Ano: 2014
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212014000100009

Longitudinal habitat disruption in Neotropical streams: fish assemblages under the influence of culverts
Provedor de dados: Neotropical Ichthyology
Autores: Mariano,José Roberto; Makrakis,Maristela Cavicchioli; Kashiwaqui,Elaine Antoniassi Luiz; Celestino,Elaine Fernandes; Makrakis,Sergio.
This study assessed differences in fish assemblages existing upstream and downstream two types of culverts, one on each of two different Neotropical streams. We analyzed the composition and structure of the ichthyofauna and tested for spatial patterns. Fish sampling was carried out monthly between November 2009 and October 2010 using different fishing gears. We collected 2,220 fish of 33 species; 901 in stretches of the Lopeí stream - circular culvert and 1,310 in stretches of the Pindorama stream - box culvert. Fish abundance was similar in upstream and downstream stretches of the circular culvert, whereas it was slightly higher in the upstream than downstream stretch for the box culvert. Characiformes predominated in the upstream stretch of both...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish passage; Fish population; Habitat fragmentation; Road crossings.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400010

A barrier to upstream migration in the fish passage of Itaipu Dam (Canal da Piracema), Paraná River basin
Provedor de dados: Neotropical Ichthyology
Autores: Fontes Júnior,Hélio Martins; Castro-Santos,Theodore; Makrakis,Sergio; Gomes,Luiz Carlos; Latini,João Dirço.
The majority of the fish passages built in the Neotropical region are characterised by low efficiency and high selectivity; in many cases, the benefits to fish populations are uncertain. Studies conducted in the Canal da Piracema at Itaipu dam on the Parana River indicate that the system component designated as the Discharge channel in the Bela Vista River (herein named Canal de deságue no rio Bela Vista or CABV), a 200 m long technical section, was the main barrier to the upstream migration. The aim of this study was to evaluate the degree of restriction imposed by the CABV on upstream movements of Prochilodus lineatus and Leporinus elongatus, Characiformes. Fish were tagged with passive integrated transponders (PIT tags) and released both downstream and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish migration; Nature-like; Neotropical fishes; PIT-tag; Telemetry.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400002

The use of morphometric analysis to predict the swimming efficiency of two Neotropical long-distance migratory species in fish passage
Provedor de dados: Neotropical Ichthyology
Autores: Assumpção,Lucileine de; Makrakis,Maristela Cavicchioli; Makrakis,Sergio; Wagner,Ricardo Luiz; Silva,Patrícia Sarai da; Lima,Ariane Furtado de; Kashiwaqui,Elaine Antoniassi Luiz.
This study investigated the external body morphology (based on morphometric data) and the swimming efficiency in fish passages (based on the ascent time in a fish ladder) of two Neotropical long-distance migratory species. The fish were collected in the fish ladder of the Porto Primavera Hydroelectric Power Plant (known as Engenheiro Sergio Motta), upper Paraná River, Brazil. The species differ in several morphometric ratios related to swimming performance. Prochilodus lineatus exhibited a higher muscle ratio and caudal fin length ratio. However, Leporinus elongatus showed higher values for the fineness ratio, a higher length from snout to pectoral fin base ratio, and a higher caudal peduncle depth factor. Although both species show good swimming...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fineness ratio; Fish swimming; Fishway; Morphology; Swimming performance.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400012

Food resource partitioning among species of Astyanax (Characiformes: Characidae) in the Lower Iguaçu River and tributaries, Brazil
Provedor de dados: Neotropical Ichthyology
Autores: Pini,Suelen F. R.; Abelha,Milza C. F.; Kashiwaqui,Elaine A. L.; Delariva,Rosilene L.; Makrakis,Sergio; Makrakis,Maristela C.
ABSTRACT Resource partitioning allows for interspecific coexistence and is frequently reported for similar species. Here, we predicted the existence of resource partitioning among species of Astyanax that co-occur in the Low Iguaçu River and tributaries in Brazil. A total of 848 stomachs of five species of Astyanax were analyzed. Algae, terrestrial plant and fruit/seed were the most consumed resources. Astyanax bifasciatus and A. dissimilis had predominantly herbivorous diets, A. gymnodontus and A. lacustris were omnivorous, and A. minor was mainly algivorous. Permutational analysis of variance showed the species had different diets, and similarity percentage analysis indicated that fruit/seed and terrestrial plant contributed the most to this...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coexistence; Congeneric species; Diet; Diet overlap; Niche theory.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000500203

Passage performance of long-distance upstream migrants at a large dam on the Paraná River and the compounding effects of entry and ascent
Provedor de dados: Neotropical Ichthyology
Autores: Wagner,Ricardo Luiz; Makrakis,Sergio; Castro-Santos,Theodore; Makrakis,Maristela Cavicchioli; Dias,João Henrique Pinheiro; Belmont,René Fuster.
This paper presents results of a fishway evaluation performed at the Engenheiro Sérgio Motta Hydroelectric Power Plant (known as Porto Primavera) - CESP, Paraná River, Brazil. The evaluation was designed to quantify entry and passage proportions of 4 long-distance migratory fish species: Brycon orbignyanus (piracanjuba), Piaractus mesopotamicus (pacu), Prochilodus lineatus (curimba), and Rhinelepis aspera (cascudo-preto). Proportions finding and entering the fishway differed between species, ranged from 7.4 % (Prochilodus lineatus) to 55.4% (Piaractus mesopotamicus). Also, proportion passing was different between species, ranged from 31% (R. aspera) to 100% (Prochilodus lineatus). Fish that were marked and released within the fishway had greater failure...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Attraction; Dams; Fish ladder; Fishway; Migration; Swimming performance.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400011

Culverts in paved roads as suitable passages for Neotropical fish species
Provedor de dados: Neotropical Ichthyology
Autores: Makrakis,Sergio; Castro-Santos,Theodore; Makrakis,Maristela Cavicchioli; Wagner,Ricardo Luiz; Adames,Maurício Spagnolo.
Improperly installed or poorly maintained culverts can pose a serious threat to fish by disrupting their habitat and endangering spawning success. Road culverts that are not designed for fish passage frequently can become obstacles. This can be especially problematic for migratory species, but can lead to fragmentation of resident populations as well. This study evaluated 40 culverts of 29 sites within a 25-km radius from Toledo city, Paraná State, southern Brazil, with respect to their likely effects on movement of the local ichthyofauna. We collected data on the shape and length of culverts, culvert material, waterfall height, water column depth, slope, and estimated flow velocity. Culverts were categorized by level of barrier risk for upstream...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Barriers; Criteria for culverts; Road crossing; Stream.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000400009

Effects of delayed first feeding on growth of the silver catfish larvae Rhamdia voulezi (Siluriformes: Heptapteridae)
Provedor de dados: Neotropical Ichthyology
Autores: Lima,Ariane F. de; Andrade,Fernanda F.; Pini,Suelen Fernanda R.; Makrakis,Sergio; Makrakis,Maristela C.
ABSTRACT The effects of the timing of first feeding on the point-of-no-return (PNR) and growth of laboratory reared silver catfish Rhamdia voulezi larvae were studied. The experiment began immediately after the complete absorption of the yolk sac, 3 days after hatching (DAH). The food was provided for the first time on 3rd, 4th, 5th, 6th, 7th, 8th, and 9th DAH. Zooplankton and newly-hatched Artemia spp. were used to feed the larvae. To evaluate the effect of food deprivation on growth, the standard length and weight of 594 larvae were assessed. Larval growth was significantly affected by the time of first exogenous feeding. The larvae fed from 3rd to 5th DAH showed a significantly higher development than those fed from 6th DAH. The larvae reached the PNR...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Exogenous feeding; Initial feeding; Larval development; Point-of-no-return; Starvation.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000200205

Characterization of the early development of Pseudoplatystoma reticulatum Eigenmann &amp;amp; Eigenmann, 1889 (Siluriformes: Pimelodidae) from the Paraguay River Basin
Provedor de dados: Neotropical Ichthyology
Autores: Andrade,Fernanda F.; Lima,Ariane F.; Assumpção,Lucileine; Makrakis,Sergio; Kasai,Rodrigo I. D.; Makrakis,Maristela C.
ABSTRACT This study described the initial development of Pseudoplatystoma reticulatum, as well as changes in growth patterns. Morphometric and meristic variables were analyzed during embryonic, larval and juvenile periods, even as allometric growth coefficients for larvae and juveniles. Eggs showed an average diameter of 1.79 mm and broad perivitelline space (23.41%). The total length (TL) of the larvae ranged from 3.05 to 25.72 mm, and the total number of myomeres ranged from 45 to 50 (preanal = 13-16 and postanal = 30-35). Initial pigmentation is poor, concentrated at the extremities of the yolk sac. In the flexion stage, the pigmentation intensifies and forms a longitudinal stripe extending from the snout to the operculum and two longitudinal stripes on...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allometric growth; Early life stages; Fish larvae; Morphology; Ontogeny.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000200216

Morphological differentiation among migratory fish species from the Paraná River basin
Provedor de dados: Biota Neotropica
Autores: Assumpção,Lucileine de; Makrakis,Maristela Cavicchioli; Makrakis,Sergio; Piana,Pitágoras Augusto; Silva,Patrícia Sarai da; Lima,Ariane Furtado de; Fernandez,Domingo Rodriguez.
This study characterized the morphological differences among migratory fish species from the Paraná River Basin. A total of 177 adult fish of Leporinus elongatus, Leporinus macrocephalus, Prochilodus lineatus, Salminus brasiliensis, Pimelodus maculatus, Pinirampus pirinampu, Pseudoplatystoma corruscans, Pterodoras granulosus, and Rhaphiodon vulpinus were sampled in the Canal da Piracema, a fish passage system at Itaipu Dam, Paraná River. The migratory species were analyzed through 22 morphometric measurements and fineness ratio to identify morphological patterns related to swimming performance. Four species groups were indicated by the Cluster analysis: I) R. vulpinus; II) P. corruscans; III) L. macrocephalus, L. elongatus, P. lineatus, P. maculatus, and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morphology; Swimming performance; Fineness ratio; Migratory fish.
Ano: 2012
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000400003