A5033443882- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Mediterranean and Iberian flora and fauna
- Ichthyology and Marine Biology
- Fish Ecology and Management Studies
- Plant Diversity and Evolution
- Mycorrhizal Fungi and Plant Interactions
- Medieval and Early Modern Iberia
- Plant and soil sciences
- Microbial Metabolism and Applications
- Parasite Biology and Host Interactions
- Mollusks and Parasites Studies
- Plant Pathogens and Fungal Diseases
- Helminth infection and control
- Banana Cultivation and Research
- Plant Taxonomy and Phylogenetics
- Fern and Epiphyte Biology
- Date Palm Research Studies
- Enzyme Production and Characterization
- Botanical Research and Applications
- Amphibian and Reptile Biology
- Pineapple and bromelain studies
- Religious and Theological Studies
- Synthesis and bioactivity of alkaloids
- Plant and Fungal Species Descriptions
Universidade Federal do Oeste do Pará
2015-2025
National Institute of Amazonian Research
2008-2012
Universidade do Estado do Pará
2007
Pontifícia Universidade Católica do Rio Grande do Sul
2006
Abstract Is there only one electric eel species? For two and a half centuries since its description by Linnaeus, Electrophorus electricus has captivated humankind capacity to generate strong discharges. Despite the importance of in multiple fields science, possibility additional species-level diversity genus, which could also reveal hidden variety substances bioelectrogenic functions, hitherto not been explored. Here, based on overwhelming patterns genetic, morphological, ecological data, we...
Abstract The Amazon Basin is an unquestionable biodiversity hotspot, containing the highest freshwater on earth and facing off a recent increase in anthropogenic threats. current knowledge spatial distribution of fish species greatly deficient this basin, preventing comprehensive understanding hyper-diverse ecosystem as whole. Filling gap was priority transnational collaborative project, i.e . AmazonFish project - https://www.amazon-fish.com/ Relying outputs we provide most complete records...
A new species of Knodus is described from the rio Cupari drainage, a tributary right margin lower Tapajós, Pará State, Brazil. The differs its congeners, except K. geryi, by having dark basal blotch on each caudal fin lobe (vs. lobes with sparse chromatophores, lacking blotches) and, exception borki, heteresthes, and pasco, 10–12 scales around peduncle 13–15).
Abstract Amazonian waters are classified into three biogeochemical categories by dissolved nutrient content, sediment type, transparency, and acidity—all important predictors of autochthonous allochthonous primary production (PP): (1) nutrient-poor, low-sediment, high-transparency, humic-stained, acidic blackwaters ; (2) neutral clearwaters (3) nutrient-rich, low-transparency, alluvial sediment-laden, whitewaters . The classification, first proposed Alfred Russel Wallace in 1853, is well...
Identifying the main taxonomic, phylogenetic and trait dimensions of beta diversity, evaluating their prospective drivers, advances our understanding patterns processes involved in evolution biological assemblages. Using comprehensive databases on distribution, phylogeny, morphological traits (later referred as functional traits) Amazonian freshwater fishes, we analyzed diversity these three to evaluate historical contemporary drivers. We mostly focused pure turnover components (Taxoβsim,...
Abstract A new species of Chrysobrycon is described from the lower Amazon basin, Brazil. The can be diagnosed its congeners by combined presence following characteristics: a clear or fully depigmented area located posterior to humeral blotch, which separates it longitudinal band chromatophores along body flank; 14–16 gill rakers on first branchial arch; 15–19 dentary teeth; reduced absent fourth infraorbital; 4–7 maxillary terminal lateral-line tube between caudal-fin rays 10 and 11; 4–5...
Abstract We investigated how the taxonomic and functional structures of fish assemblages in lower Amazon River floodplain responded to seasonal hydrological variations. Fishes were sampled 440 aquatic habitats across a area 17,673 km 2 during periods high, receding, low rising water. In addition, we recorded local environmental landscape variables known affect floodplains. Redundancy analysis indicated that associated with water levels as well environmental, spatial variables. Our results...
The fishes presented herein were collected in small streams, channel of lagoons and the main Guariba River, as well one tributary right bank Roosevelt both clear-water tributaries Aripuanã Madeira River basin. Field work was carried out November 2008, during low water season. Sampling resulted 3924 specimens belonging to 160 species distributed 34 families, seven orders. Eight are recognized new, two which recently described. This study represents first fish survey for region will certainly...
The catfish genus Ageneiosus in the exclusively Neotropical family Auchenipteridae is revised. Species of are widely distributed all major South American continental drainages except São Francisco River basin and small rivers along Brazilian east coast. taxonomic revision was based on examination available type specimens, additional museum material comparisons original descriptions. A suite morphometric, meristic qualitative characters internal external anatomy were used to diagnose valid...
The fish fauna of freshwater streams in the Tapajos National Forest was surveyed and a list species is presented. sampling conducted from 2012 to 2013 during dry season. Fish were collected with dip nets seine 22 1st 3rd order. Sampling resulted 3035 specimens belonging 117 species, 27 families six orders. most abundant Bryconops aff. melanurus, Hemigrammus belottii, analis. Four undescribed recognized, one which known only area this study. A significant dissimilarity observed composition...
The Neotropical catfish genus Tympanopleura, previously synonymized within Ageneiosus, is revalidated and included species are reviewed. Six recognized, two of which described as new. Tympanopleura distinguished from Ageneiosus by having an enlarged gas bladder not strongly encapsulated in bone; a prominent pseudotympanum consisting area on the side body devoid epaxial musculature where contacts internal coelomic wall; short, blunt head without greatly elongated jaws; smaller adult size....
Larval ontogeny of the long-whiskered catfish Pimelodus blochii Valenciennes, 1840 is described, providing useful characters for identification and determining growth pattern throughout its development. Eighty-nine larvae classified in three stages (preflexion, flexion postflexion) 30 juveniles were analyzed, totaling 119 individuals. The specimens collected monthly from January 2013 to May 2019 lower Amazon river. A suite morphological, morphometric, meristic data was used describe Three...
A new species of Bryconops is described from a right tributary the lower Tapajós River, State Pará, Brazil. munduruku, sp. nov., differs its congeners, except B. inpai and piracolina, by having black adipose fin (vs. hyaline in alcohol) and, inpai, possessing two humeral blotches lack blotch or only one blotch). munduruku uniform color pattern on posterior portion side body dark stripe extending posteriorly half anal-fin base onto middle caudal-fin rays). It further piracolina presence that...
Pimelodus pohli, new species, is described from the rio São Francisco drainage. It differs congeners by following characters in combination: adults with dark spots on anterodorsal region of body and young specimens (up to 100 mm SL) three rows laterally body; comparatively long adipose fin, more than one third distance between posterior end dorsal fin base vertical through anal-fin (21.8-26.2% SL); lips poorly developed; 20-25 gill rakers; maxillary barbels slightly surpassing caudal-fin...
Ageneiosus uranophthalmus is described from river channels of the central Amazon basin, Brazil. The new species widely distributed in and distinguished its congeners by V-shape snout eye laterally placed dorsally oriented, more visible dorsal view than ventral view. shows a range variation on color pattern when compared with congeners. This other differences are discussed herein.
The Amazon basin harbors a megadiverse fish fauna spread in an intricate network of big rivers and small streams. Amazonian streams are home many sized fishes that remains poorly documented. In order to accelerate the scientific knowledge on these important aquatic systems we adopted modern integrative approach joining morphology molecular tools investigate ichthyofauna assemblages from low situated lower Tapajós River Basin. Cytochrome c Oxidase I (COI) DNA barcodes 252 specimens collected...
Pimelodus tetramerus sp. nov. difere das outras espécies de Lacepède por sua coloração típica, que consiste quatro faixas escuras sobre os lados do corpo, a primeira, mais dorsal, iniciando logo após o final da placa pré-dorsal e terminando no base nadadeira adiposa; segunda, larga acima linha lateral, percorre desde borda lateral processo supra-occipital até caudal. Ambas estão fragmentadas em porção anterior, formando pontos escuros que, ocasionalmente, podem estar unidos, compondo um...
Three new species of Siluriformes from the rio Tocantins drainage Brazil are placed in genus Pimelodus, P. stewarti, joannis, and halisodous. Pimelodus halisodous differs sympatric joannis stewarti by number premaxillary tooth rows (13-16 vs. 5-9). presence two dark blotches on base caudal fin. The three differ all other possession a uniform gray coloration along flanks; relatively short distance between posterior nostril anterior orbital border; maxillary barbel, that only slightly...
Pimelodus microstoma, which has been treated as a junior synonym of P. fur, is resurrected and its type locality restricted to Irisanga (=Orissanga), São Paulo State, in the upper rio Paraná. An identification key provided for species from portions Paraná drainage.
Nemuroglanis furcatus is described from streams of the rio Guariba, a clear water tributary Aripuanã, Madeira basin in Brazil. can be distinguished its congeners by possession long lateral line, reaching middle portion adipose-fin base; narrow posterior cranial fontanel (16 to 27% length); and anterior border pectoral bridge with pointed contour. The plesiomorphic state some synapomorphies for N. suggests that this species might sister-group remaining genus. A key all four valid provided.