Consulta: subjectFacets:"Pimelodidae"
Registros recuperados: 16
Data/hora: 05/06/2024 05:21:13

Cytogenetic analyses of two endemic fish species from the São Francisco River basin: Conorhynchus conirostris and Lophiosilurus alexandri (Siluriformes)
Provedor de dados: 74
Autores: Marques,Marilza Barbosa de Almeida; Moreira-Filho,Orlando; Garcia,Caroline; Margarido,Vladimir Pavan.
Two Siluriformes species endemic to the São Francisco River basin were characterized by conventional and differential cytogenetic analyses involving C-banding, Ag-nucleolar organizer region (NOR) and chromomycin A3 (CMA3) staining, and FISH (fluorescent in situ hybridization) with 18S and 5S rDNA probes. Conorhynchus conirostris presents a higher diploid number (2n = 60) than those detected in Pimelodidae representatives, whereas Lophiosilurus alexandri, with a karyotype of 2n = 54 chromosomes, presents a chromosomal constitution similar to that found in the family Pseudopimelodidae. Plesiomorphic characteristics such as single NORs at terminal positions are found in both species, as revealed by CMA3 and silver nitrate staining, and FISH with a 18S rDNA...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Incertae sedis; Pimelodidae; Pseudopimelodidae; RDNA; Siluriformes.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572008000200008

Histologia e caracterização histoquímica do tubo gastrintestinal de Pimelodus maculatus (Pimelodidae, Siluriformes) no reservatório de Funil, Rio de Janeiro, Brasil
Provedor de dados: 76
Autores: Santos,Clarice M.; Duarte,Silvana; Souza,Tatiana G. L.; Ribeiro,Thatiana P.; Sales,Armando; Araújo,Francisco G.
As estruturas teciduais do trato gastrintestinal de Pimelodus maculatus La Cepède, 1803, do reservatório de Funil (22º30'-22º35'S; 44º35'- 44º40'W) foram descritas através das técnicas de hematoxilina-eosina (HE), tricômico Gomori, ácido Periódico de Schiff (PAS) e alcian blue (AB) pH 2,5. Objetivou-se a detecção de glicoproteínas (GPs) na mucosa através de uma análise histoquímica e caracterização de possíveis alterações ao longo do trato digestório destes peixes neste sistema de elevado grau de alteração. Cinqüenta e quatro indivíduos adultos, coletados entre abril de 2003 e julho de 2004 (CT=19-38 cm) foram utilizados. Na cavidade bucofaríngea, a mucosa apresenta-se com pregas longitudinais e o epitélio é do tipo estratificado pavimentoso. O esôfago...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Morfologia; Glicoproteínas; Peixes; Pimelodidae.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212007000400009

Osteology and Myology of the Cephalic Region and Pectoral Girdle of Heptapterus mustelinus, Comparison With Other Heptapterins, and Discussion on the Synapomorphies and Phylogenetic Relationships of the Heptapterinae and the Pimelodidae (Teleostei: Siluriformes)
Provedor de dados: 77
Autores: Diogo,Rui.
The cephalic and pectoral girdle structures of the heptapterin Hepapterus mustelinus (Nemuroglanis clade') are described and compared to those of two representatives of the other, more plesiomorphic, main heptapterin group, namely Goeldiella eques and Rhamdia guatemalensis ('basal clade'), as well as of several other catfishes, as the foundation for a discussion on the synapomorphies and phylogenetic relationships of the Heptapterinae. In addition to the five synapomorphies commonly referred in the literature, there is another potential Heptapterinae synapomorphy: the well-developed maxilla forming a completely closed, deep tube to enclose the base of the maxillary barbel. The subfamilies Pimelodinae, Heptapterinae and Pseudopimeodinae seem to form a...
Tipo: Journal article
Palavras-chave: Catfish; Heptapterinae; Morphology; Phylogeny; Pimelodidae; Siluriformes.
Ano: 2007
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-95022007000400011

Further records of Auchenipteridae and Pimelodidae from Suriname (Pisces: Nematognathi)
Provedor de dados: 16
Autores: Mees, G.F.
Collections of freshwater-fishes, made in recent years in Suriname, have yielded four species of Auchenipteridae and ten species of Pimelodidae. Of the latter, two species, viz., Phractocephalus hemioliopterus and Pimelodus heteropleurus, are additions to the list given by Mees (1974: 237238), but the occurrence of Phractocephalus hemioliopterus in Suriname had already been mentioned by Geijskes (1973) and was thoroughly discussed by Boeseman (1983).
Tipo: Article / Letter to the editor
Palavras-chave: Pisces; Nematognathi; Auchenipteridae; Pimelodidae; Suriname; 42.81.
Ano: 1985
URL: http://www.repository.naturalis.nl/record/318673

Molecular identification of intergenus crosses involving catfish hybrids: risks for aquaculture production
Provedor de dados: 83
Autores: Hashimoto,Diogo T.; Prado,Fernanda D.; Foresti,Fausto; Porto-Foresti,Fábio.
ABSTRACT Monitoring of the interspecific hybrid production and trade is essential for the appropriate management of these animals in fish farms. The identification of catfish hybrids by morphological analysis is unreliable, particularly of juveniles and post-F1 individuals. Therefore, in the present study, we used five molecular markers (four nuclear genes and one mitochondrial gene) to detect hybrids in the trade of pimelodid juvenile fish from different stocks purchased of five seed producers in Brazil. Samples commercialized as pintado (pure species Pseudoplatystoma corruscans ) from three fish farms were genetically identified as hybrid cachapinta (♀ P. reticulatum x ♂ P. corruscans ). In the stocks purchased as cachandiá (hybrid between ♀ P....
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Fish farm; Hybridization; Molecular markers; Nuclear genes; Pimelodidae.
Ano: 2016
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000200213

Chromosomal analyses in Megalonema platanum (Siluriformes: Pimelodidae), an endangered species from South American rivers
Provedor de dados: 83
Autores: Carvalho,Rafael Augusto de; Sanchez,Sebástian; Swarça,Ana Claudia; Fenocchio,Alberto Sergio; Martins-Santos,Isabel C.; Dias,Ana Lúcia.
This study presents chromosomal data of Megalonema platanum from rio Tibagi, Paraná, Brazil and from rio Paraná, Argentina. The diploid number was equal 54 with karyotype composition of 24m+16sm+2st+12a in both populations. The AgNOR sites were detected in the terminal position of a submetacentric pair of the two analyzed populations, coinciding with secondary constrictions on the short arm of pair 15. CMA3 and FISH with 18S rDNA probe displayed fluorescent signals that correspond to the AgNOR sites and secondary constriction. The presence of a small acrocentric supernumerary chromosome can be observed in M. platanum from rio Tibagi, with centromeric heterochromatin. Others heterochromatic blocks were evidenced in the terminal position of some chromosome...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cytogenetics; C-banding; CMA3; FISH; NORs; Pimelodidae.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000100017

Breeding, growth and exploitation of Brachyplatystoma rousseauxii Castelnau, 1855 in the Caqueta River, Colombia
Provedor de dados: 83
Autores: Córdoba,Edwin Agudelo; León,Ángela Viviana Joven; Bonilla-Castillo,César Augusto; Petrere Junior,Miguel; Peláez,Marlón; Duponchelle,Fabrice.
The main life history traits of the large Amazonian migratory catfish Brachyplatystoma rousseauxii were determined in the Caqueta River, Colombia. The breeding season occurred during the rising and falling water periods. The size at first sexual maturity was significantly larger for females (88.5 cm Ls) than males (81.7 cm). Both males and females reproduce for the first time between their third and fourth year. The growth characteristics were estimated using length frequency analyses. Females grew systematically larger than males, the difference being about 9% after the first year and increasing to 12% for ten years old individuals. Mortality estimates, calculated from different models, some taking into account the effect of body size, ranged from 0.32 to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amazonia; Dorado; Life history; Migratory catfish; Pimelodidae.
Ano: 2013
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000300637

Feeding habits and morphometry of Iheringichthys labrosus (Lütken, 1874) in the Uruguay River (Uruguay)
Provedor de dados: 83
Autores: Masdeu,Malvina; Mello,Franco Teixeira-de; Loureiro,Marcelo; Arim,Matias.
Body size and diet of organisms are fundamental attributes which determine their ecology and natural history. Iheringichthys labrosus is one of the most common fish species of the Uruguay River. However, its natural history is poorly known and there is little information about its diet and interactions with other species. This paper describes the feeding habits of this species, relating feeding patterns to the size classes and morphometry of individuals and to the temporal variations. Fishes were captured in May and November of 2006 in three zones of the lower Uruguay River. A total of 101 stomach contents was analyzed (standard length: 60-224 mm). The species exhibited a broad feeding spectrum with most items belonging to the benthic community. We found...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Diet; Freshwater; Natural history; Pimelodidae; Siluriformes.
Ano: 2011
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000300019

Reproduction of the catfish Iheringichthys labrosus (Lütken) (Pisces, Siluriformes) in Furnas reservoir, Minas Gerais, Brazil
Provedor de dados: 104
Autores: Santos,José Enemir dos; Bazzoli,Nilo; Rizzo,Elizete; Santos,Gilmar Bastos.
The reproductive biology of Iheringichthys labrosus (Lütken, 1874) was studied in Furnas reservoir, Minas Gerais, Brazil. The fishes, 323 males and 817 females, were captured bimonthly from August 1993 to July 1994 by using gill nets with 3-10 cm mesh size. Gonadal maturation of the specimens was analyzed through macro and microscopical characteristics of the gonads. The secretory activity of the tubules of the caudal region of the testis was analyzed during the maturational testicular cycle. Females and males were in reproductive activity throughout the year in the reservoir. The peak of advanced maturation/mature stages occurred from October to January and of spawned/spent from February to May. The spawning of I. labrosus was identified as fractional or...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Gonadal maturation; Pimelodidae; Spawning.
Ano: 2004
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752004000200006

Supplementary taxonomic description of Demidospermus pinirampi (Monogenoidea, Dactylogyridae), with a new host record and an expansion of its distribution range
Provedor de dados: 36
Autores: AGUIAR,Julio Cesar Cenci de; BUENO,Glauco Baptista Franco; SANTOS,Sonia Maria Cursino dos; ADRIANO,Edson Aparecido.
ABSTRACT During a survey conducted in the Lajeado Reservoir of the Tocantins River, in the state of Tocantins, Brazil, dactylogyrids were recovered from the gills of Pimelodina flavipinnis. Initial morphological analysis showed these dactylogyrids shared aspects of character with species of Demidospermus, with affinity to Demidospermus pinirampi, despite exhibiting differences with the original description by Kritsky et al. (1987) regarding the vagina, the base of the male copulatory organ and the shape and length of the bars. The analysis of the holotypes of D. pinirampi and its most morphologically close species, Demidospermus luckyi, revealed that these dactylogyrids were indeed D. pinirampi. This study therefore reports a new host and locality of...
Tipo: Info:eu-repo/semantics/report
Palavras-chave: South America; Tocantins; Morphology; Parasite; Pimelodidae.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000400355

Influência de diferentes níveis de luminosidade sobre o desempenho de larvas de Jundiá (Rhamdia quelen) (Quoy e Gaimard, 1824) (Pisces: pimelodidae)
Provedor de dados: 3
Autores: Behr, Everton Rodolfo; ZOOTECNISTA; Radünz Neto, João; UFSM; Tronco, Ana Paula; ZOOTECNISTA; Fontana, Ana Paula; ZOOTECNISTA.
O presente trabalho foi realizado com o objetivo de verificar o efeito de 3 níveis de luminosidade (T1=1,2 lux; T2=17 lux e T3=20 lux) sobre o crescimento e a sobrevivência de larvas de jundiá (Rhamdia quelen), durante as 3 primeiras semanas de cultivo em sistema com recirculação de água. Durante a primeira semana experimental as larvas foram alimentadas com náuplios de Artemia franciscana. Do oitavo ao décimo-segundo dia, houve a redução gradual do fornecimento de náuplios. Durante e após esse período, as larvas receberam ração ad libitum com 41% de PB e 4.293kcal EB/kg. Os resultados demonstraram que o ambiente escuro por 24 horas (T1) apresenta melhores resultados de comprimento-padrão e comprimento total aos 14 e 21 dias, porém sem diferenças...
Palavras-chave: 2.00.00.00-6    Ciências Biológicas larvicultura; Luminosidade; Rhamdia; Pimelodidae; Crescimento; Sobrevivência 2.00.00.00-6    Ciências Biológicas.
Ano: 1999
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/4446

Parasitofauna de Pimelodus maculatus (Osteichthyes: Pimelodidae) do rio Itajaí-Açu em Blumenau, Estado de Santa Catarina, Brasil - DOI: 10.4025/actascibiolsci.v29i1.159
Provedor de dados: 3
Autores: Bachmann, Fernanda; FURB; Greinert, Juliane Araújo; FURB; Bertelli, Pedro Wilson; FURB; Silva Filho, Hercílio Higino da; FURB; Lara, Natália Oliveira Totti de; FURB; Ghiraldelli, Luciana; UFSC; Martins, Maurício Laterça; UFSC.
Pouco se conhece sobre a parasitofauna de peixes de água doce no Estado de Santa Catarina. Espécimes de mandi, Pimelodus maculatus foram coletados no rio Itajaí-Açu, Blumenau, Estado de Santa Catarina, entre março e dezembro de 2005, para anáise parasitolóica. De 82 peixes analisados, todos apresentaram pelo menos uma espécie de parasito. Durante as amostragens foram medidos o pH, o oxigênio dissolvido, a condutividade elérica e a temperatura da água, bem como a temperatura ambiente e as condições do tempo nos dois dias que precederam a coleta. Os maiores valores de prevalêcia e intensidade média de infecção foram observados por Monogenoidea (96,3%; 100,23), seguido por Henneguya sp. (63,4%), Procamallanus (Spirocamallanus) pimelodus (51,2%; 3,02),...
Palavras-chave: 2.13.00.00-3    Parasitologia parasitas; Peixe; Pimelodidae; Pimelodus maculatus; Itajaí-Açu; Santa Catarina.
Ano: 2007
URL: http://periodicos.uem.br/ojs/index.php/ActaSciBiolSci/article/view/159

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

Age and growth of Pimelodella pappenheimi (siluriformes, pimelodidae) from an Atlantic Forest Stream in Southern Brazil
Provedor de dados: 52
Autores: Amaral,Marina Faria do; Aranha,José Marcelo Rocha; Menezes,Márcia Santos de.
Studies were performed to determine the growth curves in length and weight for Pimelodella pappenheimi in the "das Pombas" stream, a coastal stream susceptible to the flash flood phenomenon. Samples were collected from September-95 to February-97, monthly, using electric fishing. The fishes were measured in total length and weight. A total of 156 pairs of otholits were taken for ring reading. The Ford-Walford transformation allowed the use of von Bertallanffy expression. The pale ring formation was annual, and it occurred between the summer and the autumn. This species grews in length according to Lt=15.86 (1-e-0.57(t+0.1551) ) equation and in weight according to Wt= 24.23 (1-e-0.57(t+0.1551) )3.12. The increase in length was faster until the second year...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Growth; Coastal Stream; Pimelodidae.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131999000400010

Ação do tempo e da forma de suplementação alimentar com Artemia franciscana sobre a sobrevivência e o crescimento de larvas de jundiá
Provedor de dados: 65
Autores: Behr,Everton Rodolfo; Tronco,Ana Paula; Radünz Neto,João.
O presente trabalho foi realizado com o objetivo de verificar o efeito da suplementação alimentar com Artemia franciscana no desempenho de larvas de jundiá (Rhamdia quelen). Os tratamentos foram: T1 - Suplementação com náuplios de Artemia durante 7 dias; T2 - Suplementação com cistos de Artemia durante 7 dias; T3 - Suplementação com náuplios de Artemia durante 3 dias; T4 - Suplementação com cistos de Artemia durante 3 dias; T5 - Sem suplementação. Cada tratamento possuía 4 repetições. O experimento, realizado em sistema com recirculação de água, teve duração de 20 dias. Em todos os tratamentos, as larvas receberam ração ad libitum com 41% de PB e 4293Kcal EB/kg. Os resultados demonstraram que o fornecimento de náuplios proporcionou melhor crescimento que o...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Larvicultura; Rhamdia; Pimelodidae; Alimentação; Artemia.
Ano: 2000
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782000000300023

Parâmetros eritrocitários do jundiá (Rhamdia quelen) submetido à dieta com diferentes níveis de proteína
Provedor de dados: 65
Autores: Camargo,Sabrina Ortiz; Pouey,Juvêncio Luís; Martins,Clarice.
O jundiá é espécie de interesse econômico para região sul do Rio Grande do Sul, pois adapta-se a diferentes ambientes e dietas artificiais, apresentando fácil manejo e boa aceitação comercial. O bom estado nutricional é fator determinante no desenvolvimento dos peixes. A formação das células sangüíneas é dependente da manipulação da dieta. O objetivo deste trabalho foi avaliar o efeito da dieta com diferentes níveis de proteína sobre os parâmetros eritrocitários do jundiá. Foram utilizados 90 peixes, com comprimento padrão médio de 20,0±1,2cm e peso médio de 131,4±25,9g. Os animais foram distribuídos em três caixas de 1.000L, contendo três cestos (80L) cada, com três níveis de proteína bruta (30, 40 e 50%). Os animais foram amostrados a cada duas semanas,...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Eritrócitos; Nutrição; Pimelodidae; Proteína.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782005000600028