A5078782143- Fish biology, ecology, and behavior
- Fish Ecology and Management Studies
- Fish Biology and Ecology Studies
- Hydrology and Sediment Transport Processes
- Freshwater macroinvertebrate diversity and ecology
- Oil Palm Production and Sustainability
- Marine and fisheries research
- Soil erosion and sediment transport
- Species Distribution and Climate Change
- Tailings Management and Properties
- Aquatic Invertebrate Ecology and Behavior
- Ecology and Vegetation Dynamics Studies
- Plant and animal studies
Universidade Federal Rural da Amazônia
2018-2024
Capita (United Kingdom)
2024
Weatherford College
2024
Universidade Federal do Pará
2013-2018
Museu Paraense Emílio Goeldi
2017-2018
Abstract The Amazon rainforest has experienced rapid land‐use changes over the last few decades, including extensive deforestation that can affect riparian habitats and streams. aim of this study was to assess responses stream fish assemblages land cover change in eastern Amazon. We expected percentage forest catchment is correlated with local habitat complexity, which turn determines assemblage composition structure. sampled 71 streams areas different uses tested for relationships between...
Summary Reduced‐impact logging (RIL) has been considered as the main activity of forestry management in Amazon. However, little is known effects RIL on region's ecosystems or their biodiversity, and such information would be useful to inform forest management. Accordingly, this study aimed investigate physical habitat fish assemblages Eastern Amazonia streams. We predicted that changes caused by affect stream habitat, leading a loss diversity species composition with predominance generalist...
The Neotropical region hosts 4225 freshwater fish species, ranking first among the world's most diverse regions for fishes. Our NEOTROPICAL FRESHWATER FISHES data set is to produce a large-scale inventory, covering entire from Mexico and Caribbean in north southern limits Argentina, Paraguay, Chile, Uruguay. We compiled 185,787 distribution records, with unique georeferenced coordinates, represented by occurrence abundance data. number of species numerous orders are as follows: Characiformes...
Abstract Studies on feeding ecology of fishes are important to understand the relationship between species and environmental seasonal variations. In tropical rivers, these relationships mainly modeled by hydrological patterns. Thereby, this study aimed assess influence fluviometric variation life stage (juveniles adults) in Serrasalmus gouldingi lower Anapu River region, located Eastern Amazon, Pará, Brazil. Specimens were collected bimonthly, considering four different periods. We assessed...
ABSTRACT Studies on the length-weight relationship (LWR) of fishes are an important tool to describe several biological aspects species. Consequently, these studies relevant due necessity comprehension about fish life cycle. Thus, this study aimed establish ten most common in Lower Nhamundá River, left tributary Amazon River. The capture was conducted January 2008 using gill nets. A total 807 individuals, species and three Orders (Characiformes, Siluriformes Clupeiformes) were analyzed....
Abstract The Mariana disaster, resulting from the rupture of Fundão tailings storage facility (TSF) in 2015, was a large‐scale environmental disaster that drastically affected entire channel Rio Doce, southeastern Brazil. produced substantial siltation, increased turbidity, riparian damage and massive fish kill. However, Doce basin has long history degradation, including hydroelectric dams. latter are major threats to ichthyofauna because they affect flow regimes, trap sediments large wood,...
A new species of Microsternarchus is described from clear water streams in the lower Rio Amazonas basin, Brazil, increasing known genus to three. The distinguished congeners by a unique set characters including an elongated caudal filament (35.1–36.8% total length) and distinct irregular suborbital blotches. dichotomous key provided.
The present work presents parameters of the length–weight relationships (LWR) for 12 species freshwater fish from rivers within Caxiuanã National Forest, Eastern Amazon. Data coverage include main taxonomic groups in sampling area: Characiformes: Acestrorhynchidae, Anostomidae, Curimaridae, Erythrinidae, Hemiodontidae; Siluriformes: Auchenipteridae; Perciformes: Sciaenidae. LWR are estimated first time five species: Leporinus affinis, Bryconops melanurus, Pygopristis denticulata, Serrasalmus...
ABSTRACT We assessed the flood pulse effect on diet composition, trophic niche breadth, and amount of food intake two Amazonian auchenipterids with different feeding strategies. Sampling was carried out quarterly (from April/2012 to January/2014) middle Xingu River, using gillnets. measured specimens for standard length total weight. The specimens’ stomachs were removed, weighed, had their contents identified. analyzed 360 Auchenipterus nuchalis 584 Tocantinsia piresi. A. mainly composed...
ABSTRACT The Northern Pará Drainage System encompasses the left-bank tributaries of Amazonas River in southern Guiana Shield region state, Brazil. Five region’s state protected areas are considered strategic for conservation its biodiversity. In present study, we assessed ichthyofauna five System. Seven expeditions were conducted between January 2008 and 2009, which surveyed stretches Cuminá, Cuminapanema, Curuá, Jari, Mapuera, Nhamundá, Paru rivers. These surveys yielded 286 species...
The present study describes aspects of feeding ecology Dash-dot TetraHemigrammus belottii (Characiformes: Characidae) collected in the Urucu River basin Coari, Amazonas (Brazil), aims to respond following question: What is influence hydrological periods (dry and wet) spatial distribution diet H. belottii? specimens were between 2006 2009 seven streams using standard capture methods. Their stomachs removed for composition analyses. alimentary items weighed identified subsequent analyzes...
Abstract This study investigates the influence of flood pulse on reproductive biology auchenipterids Tocantisia piresi (Miranda Ribeiro, 1920) and Auchenipterus nuchalis (Spix & Agassiz, 1829) from middle Xingu River in Brazilian state Pará. The specimens were collected every three months between April, 2012, January, 2014, covering four distinct periods (flood, ebb, dry, filling). sex ratio, size at first maturity, gonadosomatic index, condition factor analysed two species, evaluated...
Abstract The Amazon River basins present distinct natural and anthropogenic characteristics that influence the structure of stream habitats their associated biota. these can be evaluated through different spatial scales. We aimed to assess (with without effect spatial-geographical factors) local, macroscale, land-use variables in fish assemblages Amazonian catchments with deforestation levels. A partial redundancy analysis a reduced metrics model were used influences. With geographic-spatial...
Abstract This study aimed to characterize the reproductive biology of Hyphessobrycon heterorhabdus, and its response environmental variations in Eastern Amazon streams. We sampled specimens every two months, between March 2019 January 2020. The population was evaluated for sex ratio, activity, growth pattern, condition factor, size at first sexual maturation, spawning type, fecundity. analyzed 180 specimens, which showed a ratio 1.6 males each female across whole period, with 2.3 during...
The length-weight relationship is important for the study of populational dynamics. This aimed to describe relationships (LWR) 11 fish species sampled on 18 streams Capim river basin eastern Amazon. Specimens were captured in 2014, 2015 and 2017, using sieve nets with 2 mm mesh size. Fixed specimens fixed 10% formalin conserved alcohol 70%, measured standard length (SL, 0.1 cm) total weight (W, 0.01 g). analysed were: Hemigrammus bellottii, ocellifer, Hyphessobrycon heterorhabdus,...
A bacia amazônica possui a maior diversidade de peixes água doce do mundo, mas ainda é insatisfatoriamente conhecida quanto ao número real espécies. Este estudo objetiva produzir uma lista atualizada espécies da Floresta Nacional Caxiuanã (FLONA Caxiuanã), das poucas áreas protegidas Amazônia Oriental. Dados referentes 20 anos (1993 2012) amostragem foram compilados coleção ictiológica Museu Paraense Emílio Goeldi e inventários previamente publicados. Um total 211 pertencentes 44 famílias 13...
Abstract The present study aimed to characterize the diet of Moenkhausia collettii and investigate possible changes due environmental variations its body size in streams eastern Amazon. specimens were sampled monthly between April 2019 March 2020. They measured for standard length (SL) total mass (Tm) eviscerated analysis stomach contents. Food items identified grouped into categories. Dietary aspects such as food importance index (AI%), trophic niche width, repletion (SRI%) evaluated....
Abstract Aim Considering the importance of knowing organisms that make up environments impacted by human activities, we aimed to create an inventory ichthyofauna a bauxite mining area in Eastern Amazon this work. Methods Specimens were collected with sieves, trawls, and gill nets at 37 points rivers streams during two expeditions (July 2017 September October 2017). After euthanasia laboratory processes, identified each individual lowest possible taxonomic level, samples deposited scientific...
ABSTRACT Motivation Freshwater ecosystems have been heavily impacted by land‐use changes, but data syntheses on these impacts are still limited. Here, we compiled a global database encompassing 241 studies with species abundance (from multiple biological groups and geographic locations) across sites different categories. This compilation will be useful for addressing questions regarding change its impact freshwater biodiversity. Main Types of Variables Contained The includes metadata each...
Abstract This study aimed to describe reproductive ecology based on morphological aspects of Peckoltia oligospila in stream rapids, eastern Amazon. A total 186 fish (75 males and 111 females) were collected. The sex gonadal maturity stage these specimens obtained histological characteristics the gonads. ratio, gonado‐somatic index (GSI), relative frequency different stages, size at first sexual maturation, condition factor population, fluviometry evaluated during study. There was a...