Myxobolus insignis sp. n. (Myxozoa, Myxosporea, Myxobolidae), a parasite of the Amazonian teleost fish Semaprochilodus insignis (Osteichthyes, Prochilodontidae) by JC Eiras, JCO Malta, AMB Varella, GC Pavanelli

“…A new myxosporean species is described from the fish Semaprochilodus insignis captured from the Amazon River, near Manaus. Myxobolus insignis sp. n. was located in the gills of the host forming plasmodia inside the secondary gill lamellae. …”
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Artisanal fisheries of the Xingu River basin in Brazilian Amazon by VJ. Isaac, MC. Almeida, REA. Cruz, LG. Nunes

“…Abstract The present study characterises the commercial fisheries of the basin of the Xingu River, a major tributary of the Amazon River, between the towns of Gurupá (at the mouth of the Amazon) and São Félix do Xingu. …”
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Perception of Amazonian fishers regarding environmental changes as causes of drastic events of fish mortality by J. A. C. Pinheiro, V. V. C. Gonçalves, H. S. Pereira, T. J. P. Fraxe, J. M. Oka, F. Siqueira-Souza, C. E. C. Freitas

“…This paper reports an event of fish mortality that occurred during the low water season in a large floodplain system on the right-hand margin of the Amazon River. Information from seasoned fishers, who live in the same area where the event happened, and hydrological and satellite image analysis was used to identify the potential cause of fish mortality events. …”
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A novel form of wasp mimicry in a new species of praying mantis from the Amazon rainforest, Vespamantoida wherleyi gen. nov. sp. nov. (Mantodea, Mantoididae) by Gavin J. Svenson, Henrique M. Rodrigues

“…A wasp mimicking praying mantis (Mantodea) of the early evolving Mantoididae family was discovered in 2013 at a research station near the Amazon River in Northern Peru. This adult specimen exhibited a striking bright red/orange and black coloration pattern that was undocumented in all known praying mantis species. …”
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Environmental heterogeneity drives the distribution of copepods (Crustacea: Copepoda) in the Amazon, Araguaia, Pantanal, and Upper Paraná floodplains by DIOGO C. AMARAL, FRANCIELI F. BOMFIM, FÁBIO A. LANSAC-TÔHA

“…This study was designed to evaluate the effect of the spatial and temporal limnological heterogeneity on the distribution of copepods in the Amazon River floodplain, Araguaia River floodplain, Pantanal floodplain, and Upper Paraná River floodplain. …”
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Non-metric characters in two species of Sotalia (Gray, 1866) (Cetacea, Delphinidae) by DC. Fettuccia, VMF. da Silva, PC. Simões-Lopes

“…Analyses of non-metric characters of the skull and cervical vertebrae were performed among samples of dolphins of the genus Sotalia from the north, northeast and south Brazilian coast (S. guianensis) and also samples from the Amazon River Basin (S. fluviatilis) as part of an osteological descriptive study. …”
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Artisanal fisheries of the Xingu River basin in Brazilian Amazon by VJ. Isaac, MC. Almeida, REA. Cruz, LG. Nunes

“…Abstract The present study characterises the commercial fisheries of the basin of the Xingu River, a major tributary of the Amazon River, between the towns of Gurupá (at the mouth of the Amazon) and São Félix do Xingu. …”
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Chromosome mapping of 5S rRNA genes differentiates Brazilian populations of Leporellus vittatus (Anostomidae, Characiformes) by Cecilia Teixeira de Aguilar, Pedro Manoel Galetti Junior

“…Among the anostomid fishes, the genus Leporellus is represented by only three species: L. nattereri, endemic of the Amazon River, L. retropinnis, endemic of the Piracicaba River, and L. vittatus, widely distributed in rivers from Peru, Colombia, Guianas, and different major hydrographic basins of Brazil. …”
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Range extension of Moenkhausia oligolepis (Günther,1864) to the Pindaré river drainage, of Mearim river basin, and Itapecuru river basin of northeastern Brazil (Characiformes: Char... by Erick Cristofore Guimarães, Felipe Polivanov Ottoni, Axel Makay Katz, Pâmella Silva de Brito

“…This species was previously known only from Venezuela, Guianas, and the Amazon River basins. In addition, we present some meristic and morphometric data of the specimens herein examined and discuss on its diagnostic characters.…”
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Avifaunal inventory of the Amazonian savannas and adjacent habitats of the Monte Alegre region (Pará, Brazil), with comments on biogeography and conservation by Marcelo Ferreira de Vasconcelos, Sidnei de Melo Dantas, José Maria Cardoso da Silva

“…The aim of this paper is to provide an avifaunal inventory of the savannas and other adjacent habitats ofMonte Alegre, on the left bank of Amazon River, northwestern Pará, Brazil. Our survey is based both on our own fieldworkand on previously-collected specimens deposited in museums. …”
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Damming in the Madeira River modifies the food spectrum of piscivorous and affects their resource partitioning by Alessandra Pasian Lonardoni, Cristhiana Paula Röpke, Taís Melo, Gislene Torrente-Vilara

“…We evaluate how visually oriented piscivorous fishes (Characiformes) share prey before and after building the Santo Antônio Hydroelectric Power Plant (HPP) in the Madeira River (Brazil), the largest muddy-water tributary of the Amazon River. Piscivorous species (Acestrorhynchus falcirostris, Acestrorhynchus heterolepis, Hydrolycus scomberoides, and Rhaphiodon vulpinus) were sampled under pristine (pre-HPP) and disturbed (post-HPP) environmental conditions. …”
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Estimated richness and environmental correlates of miniature fish assemblages in the rio Jacundá, Brazil by Joshuah S. Perkin, Carmen G. Montaña, Esteban J. Nogueira, Bianca B. Brandão, George M. T. Mattox, Kevin W. Conway

“…To promote the study of miniature fish ecology, we investigated patterns in total richness, assemblage structure and environmental correlates for miniature fishes in the rio Jacundá drainage of the Lower Amazon River basin, Pará State. Based on multi-pass dip-netting of leaf litter at 20 locations distributed across two sites, we collected miniature species and used rarefaction to estimate 9 to 14 species might be present. …”
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Squamata (Reptilia) from four sites in southern Amazonia, with a biogeographic analysis of Amazonian lizards by Teresa Cristina Sauer Avila-Pires, Laurie Joseph Vitt, Shawn Scott Sartorius, Peter Andrew ZaniI

“…The easternmost localities grouped with Guianan localities, and they all grouped with localities more to the west, south of the Amazon River.…”
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Gastrointestinal parasites of taricaya, Podocnemis unifilis (Troschel, 1848) (Testudines: Podocnemididae) from Iquitos, Peru by Nofre Sánchez, Manuel Tantaleán, Dilys Vela, Alfonso Méndez

“…Podocnemis unifilis (Yellow-spotted Amazon River turtle or taricaya) is utilized for both its meat and eggs. …”
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Violacein induces death of resistant leukaemia cells via kinome reprogramming, endoplasmic reticulum stress and Golgi apparatus collapse. by Karla C S Queiroz, Renato Milani, Roberta R Ruela-de-Sousa, Gwenny M Fuhler, Giselle Z Justo, Willian F Zambuzzi, Nelson Duran, Sander H Diks, C Arnold Spek, Carmen V Ferreira, Maikel P Peppelenbosch

“…Studying the cytotoxic effects of violacein, an antibiotic dihydro-indolone synthesised by an Amazon river Chromobacterium, we observed that death induced in CD34(+)/c-Kit(+)/P-glycoprotein(+)/MRP1(+) TF1 leukaemia progenitor cells is not mediated by apoptosis and/or autophagy, since biomarkers of both types of cell death were not significantly affected by this compound. …”
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Late Pleistocene sea-level changes recorded in tidal and fluvial deposits from Itaubal Formation, onshore portion of the Foz do Amazonas Basin, Brazil by Isaac Salém Alves Azevedo Bezerra, Afonso César Rodrigues Nogueira, José Tasso Felix Guimarães, Werner Truckenbrodt

“…The studied region was likely exposed during the Last Glacial Maximum and then during Holocene, covered by tidal deposits influenced by the Amazon River.…”
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Late Holocene dietary and cultural variability on the Xingu River, Amazon Basin: A stable isotopic approach. by Letícia Morgana Müller, Renato Kipnis, Mariane Pereira Ferreira, Sara Marzo, Bianca Fiedler, Mary Lucas, Jana Ilgner, Hilton P Silva, Patrick Roberts

“…Archaeobotany, archaeozoology, remote sensing and palaeoecology have revealed that, by the Late Holocene, populations in different parts of the Amazon Basin were using various domesticated plants, modifying soils, building earthworks, and even forming 'Garden Cities' along the Amazon River and its tributaries. However, there remains a relatively limited understanding as to how diets, environmental management, and social structures varied across this vast area. …”
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Engagement in a Citizen Science Project in the Amazon Basin by Vanessa Eyng, Maria Gomes, Luiza Câmpera, Alexandre Hercos

“…The pilot initiative was implemented in the main stem area of the Amazon River in Brazil from 2018 to 2019. We worked with 26 target groups, engaging participants in sessions to use and evaluate the app. …”
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Beyond biodiversity: fish metagenomes. by Alba Ardura, Serge Planes, Eva Garcia-Vazquez

“…Here we have applied the metagenome approach employing the barcoding target gene coi as a model sequence in catch from four very different fish assemblages exploited by fisheries: freshwater communities from the Amazon River and northern Spanish rivers, and marine communities from the Cantabric and Mediterranean seas.Treating all sequences obtained from each regional catch as a biological unit (exploited community) we found that metagenomic diversity indices of the Amazonian catch sample here examined were lower than expected. …”
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Geographic range, distribution patterns and interactions of Monogenea Van Beneden 1858, with species of native host freshwater fishes from Brazil by Marcos Tavares-Dias, Luís Mauricio Abdon Silva, Marcos Sidney Brito Oliveira

“…There was geographic distribution pattern of monogeneans limited mostly to two hydrographic basins those being the Amazon River and Paraná River. Just approximately 6% of potential monogeneans have been explored thus far, showing a clear need for further studies on this interesting group of parasites.…”
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