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Registros recuperados: 78
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A incubação de ovos e larvas em Genidens genidens (Valenciennes) (Siluriformes, Ariidae) da Baía de Guaratuba, Paraná, Brasil Zoologia
Chaves,Paulo de Tarso da C.
At Guaraluba bay, the catfish Genidens genidens shows incubating behavior during the summer months. The larvae are either less or heavier than the eggs, and their stomach analysis confirms the exogenous leeding during incubation. Embryos sizes can increase to 59mm in total lenght and 2,8g in total weight, including the yolksac. It was observed that the largest larvae are guarded by the largest adults, and that the embryo size is similar among individuals from the same adult.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Catfish; Reproduction; Fishes; Larvae; Paraná.
Ano: 1994 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751994000400008
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A new Scleromystax species (Siluriformes: Callichthyidae) from coastal rivers of southern Brazil Neotropical Ichthyology
Britto,Marcelo R.; Reis,Roberto E..
The recently resurrected callichthyid catfish genus Scleromystax includes species occurring in several Brazilian coastal river basins from southern Bahia to southern Santa Catarina. Several character states, especially those related to sexual dimorphism, demonstrate the monophyly of Scleromystax. Examination of Scleromystax specimens sampled from streams in the Ilha de Santa Catarina and Nova Veneza, and the rio Mampituba basin, Santa Catarina and Rio Grande do Sul States, revealed that they constitute a new taxon, and thus the southernmost record for the genus. Scleromystax salmacis, new species, has coloration similar to that of S. macropterus, differing from that species mainly by the absence of a black spot on the base of the median caudal-fin rays,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Taxonomy; Systematics; Corydoradinae; Catfish.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252005000400005
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A new species of Gladioglanis Ferraris & Mago-Leccia from rio Aripuanã, Amazonas, Brazil (Siluriformes: Heptapteridae) Neotropical Ichthyology
Rocha,Marcelo Salles; Oliveira,Renildo Ribeiro de; Py-Daniel,Lúcia H. Rapp.
A new species of Gladioglanis is described from a single locality on rio Aripuanã, rio Madeira basin, and can be distinguished from its congeners by the following characters: dorsal-fin spine and spinelet absent, first dorsal-fin ray flexible, unbranched, followed by five branched dorsal-fin rays, pectoral-fin spine short and with few (5 anterior-side, 4 posterior-side) dentations, 22-25 anal-fin rays, round profile of the head in dorsal view, first dorsal-fin pterygiophore in contact with the neural spine of eighth vertebrae, 13 caudal-fin rays in both upper and lower lobes, and 60 total vertebrae. Some of its characters are discussed below and compared among the species of a small clade within Heptapteridae proposed by Bockmann (1998).
Tipo: Info:eu-repo/semantics/article Palavras-chave: Catfish; Taxonomy; Gladioglanis conquistador; Gladioglanis machadoi.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000300017
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A new species of Hemiancistrus from the rio Araguaia basin, Goiás state, Brazil (Siluriformes: Loricariidae) Neotropical Ichthyology
Souza,Lesley S. de; Melo,Marcelo R. S.; Chamon,Carine C.; Armbruster,Jonathan W..
Hemiancistrus cerrado is described from the tributaries of rio Araguaia, rio Tocantins basin. Hemiancistrus cerrado has external similarities with H. megalopteryx and H. punctulatus from coastal streams of southern Brazil, and can be distinguished by having a larger internarial width, 15.9-21.1% of head length (vs. 11.2-14.0% in H. megalopteryx and 11.2-13.9% in H. punctulatus) and, with little overlap, by the larger adipose-fin spine length, 9.4-13.6% of standard length (vs. 7.1-8.7% in H. megalopteryx and 7.4-10.0% in H. punctulatus). Hemiancistrus cerrado further differs from H. megalopteryx by having the pectoral-fin spine reaching maximally to the middle of the pelvic-fin spine when adpressed in adult males (vs. reaching tip). Hemiancistrus cerrado...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neotropics; Catfish; Ancistrini; Cerrado; Taxonomy.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000300015
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A new species of Hypostomus Lacépède, 1803 (Siluriformes: Loricariidae) from the rio Tocantins-Araguaia basin, Brazil Neotropical Ichthyology
Zawadzki,Cláudio Henrique; Oliveira,Renildo Ribeiro de; Debona,Tiago.
Hypostomus delimaiis described from the rio Tocantins, Tocantins State, and from the rio Araguaia, Pará, and Tocantins States, Brazil. The new species is distinguished from all other Hypostomusspecies, except from H. carinatus, H. hoplonites, and H. watwata, by the presence of five to eight (mode seven) predorsal plates limiting posterior border of the supraoccipital bone (vs. one to three plates). It can be distinguished from H. carinatus, H. hoplonites, and H. watwata by having pale spots over darker background on body and fins (vs. dark spots over lighter background). The species was only found in the middle stretches of the rio Tocantins-Araguaia basin. The first collection of specimens assigned to the new species was done in the rio Tocantins before...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cantão; Catfish; Hydroelectric; Hypostominae; Neotropical fishes; Taxonomy.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000100073
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A new species of Microlepidogaster (Siluriformes: Loricariidae: Hypoptopomatinae) from the upper rio Paraná basin, Brazil Neotropical Ichthyology
Calegari,Bárbara B.; Reis,Roberto E..
Microlepidogaster longicolla, new species, is described from the rio São João of the upper rio Paraná basin near Brasília, in central Brazil. The new species differs from M. perforatus, the only other species in this genus, by having a continuous lateral line, median lateral plate series reaching, rather than falling short of, the end of the caudal peduncle, a shorter pectoral-fin spine (13.4-16.2 vs. 18.2-21.0% standard length), a smaller interorbital distance (38.9-43.1 vs. 47.7-53.3% head length), and more numerous dentary teeth (16-29 vs. 12-15), in addition to several osteological features. Microlepidogaster longicolla shows a remarkable suite of secondary sexually dimorphic characters, involving the presence of a conical urogenital papilla in males,...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Teleostei; Neotropical; Taxonomy; Catfish; Cascudinhos.
Ano: 2010 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252010000300007
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A new species of Otothyropsis (Siluriformes: Loricariidae) from the rio Paraguay basin, Paraguay Neotropical Ichthyology
Calegari,Bárbara B.; Pablo Lehmann,A.; Reis,Roberto E..
Otothyropsis piribebuy, new species, is described from the río Piribebuy, a tributary to the río Paraguay basin, Cordillera, Paraguay. The new species is distinguished from O. marapoama mainly by having a continuous mid-dorsal series of 17-18 lateral plates, a robust levator crest in the hyomandibula, naked areas in the abdomen, an unpigmented circular blotch on the median portion of the lower lobe, and by several features related to sexual dimorphism. In addition, Otothyropsis is re-diagnosed and its phylogenetic relationships are discussed based on its present diversity.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Cascudinho; Catfish; Neotropical; Systematics; Teleostei.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000200002
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A new species of Panaqolus (Siluriformes: Loricariidae) from the rio Madeira basin with remarkable intraspecific color variation Neotropical Ichthyology
Cramer,Christian Andreas; Py-Daniel,Lúcia Helena Rapp.
The rio Madeira is the largest white-water tributary of the Amazon, and is currently the river drainage with the highest fish species diversity in the world. A new species of Panaqolus was recognized from the middle Madeira and Mamoré rivers (Brazil) and from the Madre de Dios drainage (Peru) and it is described herein. This new species is readily distinguished from its congeners by the large number of white dots distributed all over the body and by its remarkable amplitude of color pattern variation, ranging from a pale, light brown, to dark brown and almost black background coloration. The new species closely resembles P. albomaculatus but has more and smaller dots on the body, a smaller orbital diameter (12.5-16.8% head length vs. 16.0-20.0%) and longer...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon; Catfish; Key of identification; Panaque; Peckoltia.
Ano: 2015 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000300461
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A new species of Pimelodus La Cépède, 1803 (Siluriformes: Pimelodidae) from rio Ribeira de Iguape basin, Brazil Neotropical Ichthyology
Ribeiro,Frank Raynner V; Lucena,Carlos Alberto S. de; Oyakawa,Osvaldo T.
Pimelodus multicratifer, a new species, is described from the rio Ribeira de Iguape basin. The new species differs from the other Pimelodus species by the following features: 26 to 30 gill rakers on the first branchial arch; a combination of three to six rows of dark spots regularly or irregularly scattered on the flanks and several small dark spots irregularly scattered on the dorsal surface of head, supraoccipital process, and sometimes on the dorsal and caudal fins; striated lips; maxillary barbels reaching between posterior tip of the pelvic-fin rays and posterior tip of the middle caudal-fin rays.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Taxonomy; Catfish; Neotropical region; Coastal drainages.
Ano: 2011 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252011000100011
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A new species of Pimelodus LaCépède, 1803 (Siluriformes: Pimelodidae) from the rio São Francisco drainage, Brazil Neotropical Ichthyology
Ribeiro,Frank Raynner V.; Lucena,Carlos Alberto S. de.
Pimelodus pohli, new species, is described from the rio São Francisco drainage. It differs from congeners by the following characters in combination: adults with dark spots on anterodorsal region of body and young specimens (up to 100 mm SL) with three rows of dark spots laterally on body; comparatively long adipose fin, more than one third of the distance between posterior end of dorsal fin base and the vertical through posterior end of anal-fin base (21.8-26.2% SL); lips poorly developed; 20-25 gill rakers; and maxillary barbels slightly surpassing the caudal-fin base. A key to the species of Pimelodus of the rio São Francisco drainage is presented.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Catfish; Taxonomy; South America; Neotropical.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252006000400004
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A new species of Propimelodus Lundberg & Parisi, 2002 (Siluriformes: Pimelodidae) from rio Araguaia, Mato Grosso, Brazil Neotropical Ichthyology
Rocha,Marcelo S.; Oliveira,Renildo R. de; Rapp Py-Daniel,Lúcia H..
A new species of Propimelodus from the middle course of the rio Araguaia is described. Propimelodus araguayae, new species, can be distinguished from its congeners in having a conspicuous black dot on the base of the dorsal-fin rays (vs. a different pattern), large eyes (29.7-34.8% of head length and 62.7-74.7% of snout length vs. 14.5-21.1% and 31-44% in P. caesius and 9.5-19.7% and 17-38% in P. eigenmanni), anal-fin lobe present (vs. absent), premaxillary bone with three irregular rows of teeth (vs. 4-5 in P. caesius and 5-8 in P. eigenmanni), tip of anterior lateral process of basipterygium at the same level as the tip of the anterior medial process (vs. anterior lateral process extending beyond the tip of the anterior medial process), total number of...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Catfish; Systematics; Propimelodus araguayae; Propimelodus eigenmanni; Propimelodus caesius.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000300007
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A new species of sexually dimorphic Pareiorhaphis Miranda Ribeiro, 1918 (Siluriformes: Loricariidae) from the rio Doce basin, Brazil Neotropical Ichthyology
Pereira,Edson H. L.; Vieira,Fábio; Reis,Roberto E..
Pareiorhaphis nasuta, a new neoplecostomine catfish of the family Loricariidae is described. The species was collected from headwaters of the rio Matipó, tributary of the upper rio Doce basin in State of Minas Gerais, Brazil. The new species is readily diagnosed from all remaining congeners by the longer snout and by the smaller orbital diameter. The new species is the first representative of the genus Pareiorhaphis discovered in the rio Doce basin, thus expanding its geographic distribution. A phylogenetic diagnosis for Pareiorhaphis is presented.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Freshwater; Taxonomy; Systematics; Neotropical; Catfish.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252007000400003
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A new species of the Hypostomus cochliodongroup (Siluriformes: Loricariidae) from the rio Aripuanã basin in Brazil Neotropical Ichthyology
Zawadzki,Cláudio H.; Carvalho,Pedro Hollanda.
A new species of Hypostomus, H. dardanelos, is described from the rio Aripuanã basin, a southern tributary to the rio Madeira, in northern Mato Grosso State, Brazil. The new species is assigned to the Hypostomus cochliodon group by the possession of few teeth, spoon-shaped teeth, angle between dentaries usually less than 80°, and by the absence of a notch between hyomandibular and the metapterygoid. The new species can be diagnosed from its congeners by its unique color pattern of yellowish-brown ground color covered by well-defined dark spots of relatively equal size, evenly spaced and moderately set along the dorsal region of the body and fins, except on the ventrolateral region of the caudal peduncle and proximal region of anal and caudal fins, which...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Amazon basin; Catfish; Hypostominae; Neotropical fishes; Taxonomy.
Ano: 2014 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000100043
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A new Tatia (Ostariophysi: Siluriformes: Auchenipteridae) from the rio Iguaçu basin, Paraná State, Brazil Neotropical Ichthyology
Pavanelli,Carla Simone; Bifi,Alessandro Gasparetto.
A new species of Tatia is described from the lower rio Iguaçu basin, Paraná State, Brazil. The new species is distinguishable from congeners by having large, irregular pale blotches over dark brown base coloration, absent longitudinal stripe, caudal fin with round to striate dark brown spots over light base in adults or entirely dark in juveniles, and by having a long humeral process. Sexual dimorphism of the new species is marked by differences among genital and urinary apertures, size proportions between upper and lower lobe of caudal fin, and size, width and presence of antrorse and retrorse spines on anal-fin rays.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Neotropical; Freshwater fish; Sexual dimorphism; Catfish.
Ano: 2009 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000200010
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A systematic revision of Tatia (Siluriformes: Auchenipteridae: Centromochlinae) Neotropical Ichthyology
Sarmento-Soares,Luisa Maria; Martins-Pinheiro,Ronaldo Fernando.
The auchenipterid catfish genus Tatia is revised. Twelve species are recognized including three described as new. Tatia is diagnosed by the hyomandibula elongated anterodorsally, the anal-fin base of adult males reduced in length, and the caudal peduncle laterally compressed and deep with a middorsal keel. Tatia aulopygia occurs in the Madeira river drainage and is distinguished by the reduced cranial fontanel in adults and male modified anal fin with middle rays reduced in length. Tatia boemia, known from the upper Uruguay river drainage, is distinguished by its unique color pattern with dark chromatophores on the sides of body. Tatia brunnea from river basins in Suriname and French Guiana and the Negro river drainage, Amazon basin, is recognized by its...
Tipo: Info:eu-repo/semantics/article Palavras-chave: South America; Freshwater; Catfish; Taxonomy; Centromochlus.
Ano: 2008 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252008000300022
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AN ASSESSMENT OF DYNAMIC BEHAVIOR IN THE U.S. CATFISH MARKET: AN APPLICATION OF THE GENERALIZED DYNAMIC ROTTERDAM MODEL AgEcon
Muhammad, Andrew; Jones, Keithly G..
Dynamic demand systems have been employed in a number of studies to account for habit formation and inventory adjustments in demand. Few studies have attempted to provide a theoretical foundation for the dynamic demand structures employed. Recently, Bushehri (2003) showed how a generalized dynamic Rotterdam model could be derived from the neoclassical intertemporal utility maximization problem; however, no empirical application is provided in his study. This paper provides an empirical application of the generalized dynamic Rotterdam model to the demand for processed catfish products in the U.S. The two-period dynamic Rotterdam model explained a significant amount of the variation in U.S. catfish demand and was preferred to the one-period and static...
Tipo: Conference Paper or Presentation Palavras-chave: Dynamic; Rotterdam model; Catfish; Demand; Partial adjustment; Demand and Price Analysis; Research Methods/ Statistical Methods; Q11; Q13.
Ano: 2008 URL: http://purl.umn.edu/45912
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An Assessment of Dynamic Behavior in the U.S. Catfish Market: An Application of the Generalized Dynamic Rotterdam Model AgEcon
Muhammad, Andrew; Jones, Keithly G..
The generalized dynamic Rotterdam model was used in estimating U.S. demand for disaggregated catfish. The overall goal was to examine habit persistence in consumption and to determine the adjustment process in demand. Results indicated that it took up to 1 month for catfish-product demand to fully adjust to changes in expenditures and prices. Additionally, habit persistence played a role in demand where present consumption of a given product was positively affected by past consumption of that product. Consequently, U.S. catfish demand was significantly more elastic in the long-run.
Tipo: Journal Article Palavras-chave: Catfish; Demand; Dynamics; Partial adjustment; Rotterdam model; Agribusiness; Consumer/Household Economics; Demand and Price Analysis; Food Consumption/Nutrition/Food Safety; Institutional and Behavioral Economics; C51; Q11; Q13; Q17.
Ano: 2009 URL: http://purl.umn.edu/56660
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An Empirical Investigation of Interproduct Relationships Between Domestic and Imported Seafood in the U.S. AgEcon
Lee, Young-Jae; Kennedy, P. Lynn.
This study seeks to identify interproduct relationships between domestic catfish and a representative selection of imported seafood. In doing so, this study uses multivariate cointegration and structural analyses. Multivariate cointegration analysis suggests that six imported seafood product groupings form a common market with domestic catfish. Structural analysis reveals that 1) domestic and imported catfish are net and gross quantity substitutes; 2) domestic catfish and imported seafood are normal goods; 3) six imported seafood products are identified as gross quantity substitutes for domestic catfish; and 4) according to the derived Allais coefficients, interaction intensities of imported seafood for domestic catfish (from greatest to least) are as...
Tipo: Journal Article Palavras-chave: Catfish; Multivariate cointegration; Quantity substitutability; Seafood imports; Structural analysis; Agribusiness; Agricultural and Food Policy; Agricultural Finance; Demand and Price Analysis; Environmental Economics and Policy; Financial Economics; Health Economics and Policy; International Relations/Trade; Livestock Production/Industries; Marketing; Political Economy; Production Economics; Productivity Analysis; Public Economics; Research Methods/ Statistical Methods; D12; F10; F11; F13.
Ano: 2010 URL: http://purl.umn.edu/100516
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An external tag for fish: tagging effects in different fish size classes and its influence on growth performance and hematology of Lophiosilurus alexandri (Siluriformes: Pseudopimelodidae) Neotropical Ichthyology
Boaventura,Túlio P.; Gil,Viviane S. B.; Gil,Camila S. B.; Peres,Anderson M.; Luz,Ronald K..
ABSTRACT This study tested an external tag for juveniles of Lophiosilurus alexandri and measured the effects of tagging in different size classes of fishes. Experiment 1 evaluated the retention rate and influence of the tag on survival and growth of three hundred fishes divided Small, Medium and Large size classes. After 90 days of experiment the fishes had 100% survival and the tag had a higher retention rate for animals of the Large size class. Experiment 2 evaluated the tag’s influence on hematology parameters of forty-two fishes at 5, 10 and 30 days post-tagging. In this experiment both tagged and untagged animals experienced 9.4% mortality. The hematocrit was higher on the 30th day for tagged animals than for untagged animals. No difference was...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Catfish; Identification; Pacamã; Physiology; Repopulation; Retention.
Ano: 2019 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252019000100214
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Bagrichthys vaillantii (Popta, 1906), a valid species of bagrid catfish from eastern Borneo (Teleostei: Siluriformes) Naturalis
Ng, H.H..
Bagrichthys vaillantii (Popta, 1906), a species of bagrid catfish previously considered a junior synonym of B. macracanthus Bleeker, 1854, is found to be a valid species distinct from the latter. It can be differentiated from B. macracanthus in having a shorter dorsal spine, smaller eye and steeper dorsal profile.
Tipo: Article / Letter to the editor Palavras-chave: Bagrichthys; Bagridae; Catfish; Taxonomy; Borneo; 42.81.
Ano: 2000 URL: http://www.repository.naturalis.nl/record/216179
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