Consulta: subjectFacets:"Loricariidae"
Registros recuperados: 16
Data/hora: 01/06/2024 17:23:00

Allozyme variation among three populations of the armored catfish Hypostomus regani (Ihering, 1905) (Siluriformes, Loricariidae) from the Paraná and Paraguay river basins, Brazil
Provedor de dados: 74
Autores: Zawadzki,Cláudio H.; Renesto,Erasmo; Peres,Maria Dolores; Paiva,Suzana.
Three Brazilian populations of the armored catfish Hypostomus regani (Ihering, 1905) were sampled, one from the Corumbá Reservoir in Goiás state, another from the Itaipu Reservoir in Paraná state and a third from the Manso Reservoir in Mato Grosso state. Allozyme electrophoresis was used to establish the genetic structure of the species, with the analysis of liver, heart and muscles tissues allowing the scoring of 25 loci from 14 enzymatic systems. Although no diagnostic loci were found, some exclusive rare alleles were recorded for the three populations. The genetically most similar populations were those from Corumbá and Itaipu, and the most distant were the populations from Manso and Corumbá. The allozyme data showed three structured populations...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allozymes; Genetic variability; Hypostomus regani; Loricariidae; Paraguay and Paraná Rivers.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000400025

Genetic variability of Hypostomus (Teleostei, Loricariidae) from the Ribeirão Maringá, a stream of the upper Rio Paraná basin, Brazil
Provedor de dados: 74
Autores: Paiva,Suzana de; Renesto,Erasmo; Zawadzki,Cláudio Henrique.
Hypostomus strigaticeps and two morphotypes of Hypostomus were collected from Ribeirão Maringá, a small tributary of the Rio Pirapó, an effluent of the upper Rio Paraná. The three populations were analyzed by allozyme electrophoresis that allowed the scoring of 25 loci from 14 enzyme systems. Heterozygosity values (He) were 0.028 in H. strigaticeps, 0.027 in Hypostomus sp. 1 and zero in Hypostomus sp. 2. Several diagnostic loci and fixed differences were observed for each population at loci Acp-A, Gcdh-A and Mdhp-A. Thus, all populations were genetically distinct, although there were many common alleles. The unbiased genetic identities of Nei (I) were estimated as 0.780 for Hypostomus sp. 1 and H. strigaticeps, 0.357 for H. strigaticeps and Hypostomus sp....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Allozymes; Heterozygosity; Hypostomus; Loricariidae; Systematic.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572005000300005

Allozyme comparison of two populations of Rineloricaria (Siluriformes, Loricariidae) from the Ivaí River, upper Paraná River basin, Brazil
Provedor de dados: 74
Autores: Limeira,Daniel M.; Renesto,Erasmo; Zawadzki,Cláudio H.
Two allopatric morphotypes of the genus Rinelocaria were compared through the allozyme electrophoresis technique: one morphotype, R. pentamaculata, from the Keller River in the middle stretch of the Ivaí River basin and the other, R. aff. pentamaculata, from the São João River in the upper portion of the Ivaí River basin. The morphotype from the São João River was collected upstream from the São João waterfall, which is about 80 m deep. Twelve enzymatic systems (AAT, ADH, EST, GCDH, G3PDH, GPI, IDH, LDH, MDH, ME, PGM and SOD) were analyzed, which allowed to score 22 loci. Only loci Aat-2, Est-3 and Mdh-C showed polymorphism. The two samples differed in allele frequencies at the three polymorphic loci. The average expected heterozygosity for all loci was...
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Allozymes; Fish genetics; Genetic distance; Polymorphism; Loricariidae; Pisces.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572009000200034

Nove espécies novas do gênero Rineloricaria (Siluriformes, Loricariidae) do rio Uruguai, do sul do Brasil
Provedor de dados: 76
Autores: Ghazzi,Miriam S.
Nove espécies novas de Rineloricaria do alto e médio rio Uruguai são descritas nos Estados do Rio Grande do Sul e Santa Catarina, Brasil. Rineloricaria misionera Rodriguez &amp;amp; Miquelarena, 2005 é a única espécie atualmente conhecida desta bacia. As novas espécies são diagnosticadas principalmente pela disposição das placas no abdome, padrão de colorido, extensão da área nua anterior no focinho e comprimento das nadadeiras. As espécies aqui descritas são endêmicas do rio Uruguai. Rineloricaria anitae e R. tropeira são restritas aos afluentes dos rios Canoas e Pelotas; R. zaina é amplamente distribuída da confluência dos rios Canoas com o rio Pelotas até o rio Ibicuí; R. anhanguapitan é restrita a bacia do Passo Fundo; R. capitonia ocorre no alto rio...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rineloricaria; Loricariidae; Rio Uruguai; Taxonomia; Neotropical.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212008000100014

Fator de condição gonadal, índice hepatossomático e recrutamento como indicadores do período de reprodução de Loricariichthys platymetopon (Osteichthyes, Loricariidae), bacia do rio Uruguai médio, sul do Brasil
Provedor de dados: 76
Autores: Querol,Marcus Vinicius Morini; Querol,Enrique; Gomes,Nara Neide Adolpho.
The recruitment period of Locariichthys platymetopon (Isbrucker &amp;amp; Nijssen, 1979) was investigated. It has been found out, through the data analysis, that the gonadal condition factor is a good indicator of the reproductive period and that the hepatossomatic index is probably related to the storage of reservation for the winter period. The recruitment occurred in November coinciding with the reproductive activity of May.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Pisces; Loricariidae; Locariichthys; Reproductive; Uruguay river.
Ano: 2002
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000300008

Use of sodium chloride and zeolite during shipment of Ancistrus triradiatus under high temperature
Provedor de dados: 83
Autores: Ramírez-Duarte,Wilson F.; Pineda-Quiroga,Carolina; Martínez,Nhora; Eslava-Mocha,Pedro R.
The use of sodium chloride (0.5 g/L and 1 g/L) and zeolite (22.7 g/L) during shipment (48 h) of Ancistrus triradiatus at high temperatures (between 24.5 and 34ºC) were evaluated. Several water quality parameters (dissolved oxygen, pH, conductivity, and total ammonia) were measured before and after shipment. Glycemia was measured before shipment and at 24 and 48 h after shipment. After shipment, a resistance test was carried out in a high concentration of sodium chloride, and mortality was recorded after shipment, and 7 days post-shipment. While the two evaluated substances increased survival of A. triradiatus challenged by high temperatures during shipment, the best result was obtained with 1 g/L of sodium chloride.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Armored catfish; Clinoptilolite; Shipment; Loricariidae; NaCl.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000400023

Otocinclus cocama, a new uniquely colored loricariid catfish from Peru (Teleostei: Siluriformes), with comments on the impact of taxonomic revisions to the discovery of new taxa
Provedor de dados: 83
Autores: Reis,Roberto E.
A new, uniquely colored species of the loricariid catfish genus Otocinclus, O. cocama is described from a tributary to the lower río Ucayali in northern Peru. The new species is distinguished from other Otocinclus species by two putatively autapomorphic features, the distinct color pattern, consisting of vertically elongated blotches spanning from the dorsal midline to the ventral border of flanks, and by a complete lateral line. The phylogenetic relationships of the new species are investigated and it is apparently more closely related to a clade formed by O. huaorani, O. bororo, O. mariae, and O. mura. Comments on the impact of taxonomic revisions for the discovery and description of previously undetected biodiversity are also presented.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Systematics; Taxonomy; South America; Neotropical; Loricarioidei; Loricariidae; Phylogeny.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252004000300001

Effects of the spermatozoa: oocyte ratio, water volume and water temperature on artificial fertilization and sperm activation of cascudo-preto
Provedor de dados: 96
Autores: Bombardelli,Robie Allan; Sanches,Eduardo Antônio; Baggio,Diego Mendes; Sykora,Renata Marino; Souza,Bruno Estevão de; Tessaro,Lucélia; Piana,Pitágoras Augusto.
The objective of this study was to evaluate the effects of water volume and water temperature on the sperm motility duration and the number of spermatozoa, and the water volume on the fertilization rates of oocytes of Rhinelepis aspera. Experiments were carried out to evaluate the effect of semen dilutions (1.74×10-5, 1.74×10-4, 1.74×10-3, 1.74×10-2, 1.74×10-1 and 1.00 mL of sperm.mL-1 of water) and water temperature (5, 10, 15, 20, 25, 30, 35, 40, 45, and 50 ºC) on spermatozoa motility duration. In addition, the effects of insemination dose (7×10³, 7×10(4), 7×10(5), 7×10(6) and 7×10(7) spermatozoa.oocyte-1) and water volume (1.0, 30.0, 60.0, 90.0 and 120.0 mL water.2.0 mL-1 oocytes) on the artificial fertilization rates of oocytes were evaluated. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish; Loricariidae; Oocyte; Reproduction; Semen.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982013000100001

Estádios evolutivos de tripanossomas de Hipostomus punctatus Valenciennes (Osteichthyes, Loricariidae) em infecção natural de Batracobdella gemmata Blanchard (Hirudinea, Glossiphoniidae)
Provedor de dados: 104
Autores: D'Agosto,Marta; Serra-Freire,Nicolau Maués da.
Seventeen leeches obtained from armoured catfish (Hypostomus punclatus Valenciennes, 1840) infected with Trypanosoma spp. were examined. It was observed the presence of tripomastigotes, epimastigotes and amastigotes forms as well as dividing forms in the proboscis and in the stomach, different from the ones found in the vertebrate host as regards the morfometric features and developing forms. The examination of the contents of rectum did not show tripanosomes. These facts seem to demonstrate that Batracobdella gemmata (Blanchard, 1900) is an invertebrate host of trypanosomes and the transmission is done by means of inoculation.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Osteichthyes; Loricariidae; Hirudinea; Glossiphoniidae; Tripanosomes.
Ano: 1993
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000300008

Gonadal structure and gametogenesis of Loricaria lentiginosa Isbrücker (Pisces, Teleostei, Siluriformes)
Provedor de dados: 104
Autores: Guimarães-Cruz,Rodrigo J.; Santos,José E. dos; Santos,Gilmar B.
The gonadal structure and gametogenesis of Loricaria lentiginosa Isbrücker, 1979 were studied through anatomical and histological techniques. Forty two males and ten females in maturation/mature stage were captured in the reservoir of Porto Colombia, Paraná river basin, Minas Gerais, using gill nets, from November 2001 to October 2002 (tri-monthly captures). Examination of the testes revealed that they were paired, elongated and not fringed organs. Histologically, the testes presented three distinct regions: cranial espermatogenic; transistion espermatogenic and secretory; and caudal exclusively secretory. Standard histochemical techniques detected neutral glycoproteins from the secretion of the tubules of the caudal region. Espermatogenesis occurred in...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Espermatogenesis; Loricariidae; Ovogenesis; Testes secretion.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000300005

Abundância relativa e distribuição de Loricariichthys spixii (Steindachner) (Siluriformes, Loricariidae) no reservatório de Lajes, Estado do Rio de Janeiro, Brasil
Provedor de dados: 104
Autores: Duarte,Silvana; Araújo,Francisco Gerson.
The armored catfish Loricariichthys spixii (Steindachner, 1882) is the most abundant member of the Loricariidae family in the Lajes reservoir (22º42'-22º50'S 43º53' -44º05'W), the largest dam in the State of Rio de Janeiro State, but little is known about its biology and life cycle. A standardized fish sampling program in three zones of the reservoir (lower, middle and upper reaches), during three annual cycles: monthly in 1994/1996 and bi-monthly in 1997 was conducted out aiming to assess and add knowledge of the population structure of this species. Fishes were caught using gill nets (50 m long, 3 m depth and 25 to 45 mm meshes), amounting 160 samples. Water temperature, pH and transparency were registered at each sample to correlate with fish abundance....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Lajes; Reservoir; Loricariidae; Distribution; Environmental parameters.
Ano: 2001
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752001000200017

Comparação morfológica e bioquímica de duas populações alopátridas de Hypostomus margaritifer (Regan, 1907) (Osteichthyes, Loricariidae) da bacia do alto rio Paraná
Provedor de dados: 3
Autores: Zawadzki, Cláudio Henrique; UEM; Weber, Claude; MNH-Geneva; Pavanelli, Carla Simone; UEM; Renesto, Erasmo; UEM.
Duas populações alopátridas de cascudos, ambas provisoriamente denominadas Hypostomus margaritifer (Regan, 1907) (Osteichthyes, Loricariidae), foram coletadas no reservatório de Corumbá, Estado de Goiás e no reservatório de Itaipu, Estado do Paraná. Diferenças no padrão de coloração, presença ou ausência de placas abdominais e no tamanho máximo dos exemplares foram observadas entre estas populações. O status taxonômico dessas populações foi investigado através de duas técnicas diferentes: análise morfológica e de aloenzimas. A análise morfométrica não permitiu detectar diferenças expressivas entre as populações. Uma única diferença significativa nas freqüências alélicas foi encontrada no loco sAat-A, entretanto a conspecificidade é comprovada pelo alto...
Palavras-chave: 2.00.00.00-6 Ciências Biológicas Hypostomus margaritifer; Aloenzimas; Loricariidae; Morfometria; Rio Paraná; Sistemática 2.00.00.00-6 Ciências Biológicas.
Ano: 2002
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/3369

Diet of Lontra longicaudis (Carnivora: Mustelidae) in a pool system in Atlantic Forest of Minas Gerais State, southeastern Brazil - doi: 10.4025/actascibiolsci.v34i4.10332
Provedor de dados: 3
Autores: Silva, Fabiano Aguiar da; Universidade Federal de Viçosa; Nascimento, Emmanuel de Melo; Faculdades Integradas de Cataguases; Quintela, Fernando Marques; Universidade Federal do Rio Grande do Sul.
The present study aimed to investigate the feeding habits of Lontra longicaudis in a pool system within the Private Reserve of Natural Patrimony (RPPN) Usina Maurício, located in Paraíba do Sul river basin, Atlantic Forest of southeastern Minas Gerais  State. The diet composition was determined based on the identification of items present in 212 scats sampled between July 2008 and October 2009 in a 4.1 km stretch of the pool system. The found items and its respective percentages of occurrence were: mollusks (0.5%), insects (16.5%), spiders (1.4%), crustaceans (3.3%), fish (96.7%), amphibians (0.9%), snakes (3.8%), birds (2.8%), mammals (8.5%) and fruits (0.5%). Among fish, the identified families and respective percentages of occurrence were: Loricariidae...
Palavras-chave: Ecologia- Limnologia neotropical otter; Feeding habits; Loricariidae; Pimelodidae; Zona da Mata Ecologia.
Ano: 2012
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/10332

Life-history features of a rapids-dwelling loricariid catfish from Atlantic forest streams, Brazil
Provedor de dados: 49
Autores: Brito,Marcelo Fulgêncio Guedes; Lazzarotto,Henrique; Caramaschi,Erica Pellegrini.
Spatial distribution, suitable spawning sites, and sexual dimorphism were investigated in armored catfish Neoplecostomus microps in the Macaé River from March 2004 to March 2005. Individuals of N. microps (n=290) were limited to fast-flowing stretches, and the distribution was related to ontogenetic development. Larvae in post-flexion occurred in the marginal vegetation, and adults only in gaps between boulders and stones in the river channel. Juveniles occurred in both environments. Spawns were found in the natural habitat in rapid stretches, with the eggs attached to the lower surface of stones in openings formed in the riverbed. The number of eggs per stone ranged from 62 to 375, with significant differences among the mean sizes of the eggs. Sexual...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Neoplecostomus microps; Loricariidae; Distribution; Spawn; Sexual dimorphism.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000200201

Fishes community composition and patterns of species distribution in Neotropical streams
Provedor de dados: 49
Autores: Cavalheiro,Laísa Wociechoski; Fialho,Clarice Bernhardt.
Abstract: The ichthyofauna of streams in the Neotropical region is not yet fully known. This study aims to investigate the ichthyofauna composition of six streams of the Ijuí River sub-basin, Rio Grande do Sul State, inserted in the Uruguay River basin, as to contribute to the knowledge of fishes species richness and distribution in the south of Brazil. Sampling was carried out between July 2015 and May 2016, bimonthly, using the technique of electric fishing to collect the fishes. Spatial variations (per sampled stream) in the ichthyofauna composition were tested with a permutational multivariate analysis of variance. In total, we collected 5,029 individuals from 55 species, 13 families and five orders. From these species, 17 are endemic to the Uruguay...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Abundance; Characidae; Heptapteridae; Loricariidae; Richness; Uruguay River basin.
Ano: 2020
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032020000100302

Morphology of gonads, maturity and spawning season of Loricariichthys spixii (Siluriformes, Loricariidae) in a Subtropical Reservoir
Provedor de dados: 52
Autores: Duarte,Silvana; Araújo,Francisco Gerson; Sales,Armando; Bazzoli,Nilo.
The gonad morphology and spawning season of Loricariichthys spixii in Lajes reservoir were described based on 175 males and 613 females. Cells from the spermatogenic lineage were divided in four phases: spermatogonia (primary and secondary), spermatocytes (primary and secondary), spermatids and spermatozoa, and the cells from the ovocitarian lineage were divided in four phases: primary oocytes (O1), previtellogenic oocytes (O2), cortical vesicle oocytes (O3) and yolk globules or vitellogenic (O4). Five gonadal stages were described for the males/females according to oocytes and spermatogenic lineage cells distribution: resting (1); initial maturation (2a); advanced maturation (2b); partially spent/spawned (4a); totally spent/spawned (4b). Spawning was...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Loricariidae; Reservoir; Fish reproduction; Gonad morphology; Brazil.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000700013