A5060530532- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Fish Ecology and Management Studies
- Marine and fisheries research
- Ichthyology and Marine Biology
- Aquaculture Nutrition and Growth
- Coral and Marine Ecosystems Studies
- Freshwater macroinvertebrate diversity and ecology
- Aquatic Ecosystems and Phytoplankton Dynamics
- Physiological and biochemical adaptations
- Coastal wetland ecosystem dynamics
- Water Quality and Pollution Assessment
- Environmental and Cultural Studies in Latin America and Beyond
- Marine Biology and Ecology Research
- Academic Research in Diverse Fields
- Environmental Sustainability and Education
- Hydropower, Displacement, Environmental Impact
- Amphibian and Reptile Biology
- Aquaculture disease management and microbiota
- Aquatic Invertebrate Ecology and Behavior
- Genetic diversity and population structure
- Parasite Biology and Host Interactions
- Turtle Biology and Conservation
- melanin and skin pigmentation
- Evolution and Paleontology Studies
Universidade Federal do Rio de Janeiro
2015-2024
Fundação Carlos Chagas Filho de Amparo à Pesquisa do Estado do Rio de Janeiro
2011
Rotary International
2011
National Council for Scientific and Technological Development
2008
Universidade Federal do Paraná
2007
Centro Universitário da Cidade
1999
Universidade Estadual de Campinas (UNICAMP)
1999
Universidade do Estado do Rio de Janeiro
1999
The estimated mean intestinal coefficients of Leporinus friderici Bloch, 1794 and L. taeniofasciatus Britski, 1997, from the Upper Tocantins River, central‐western Brazil, were 1·25±0·15 1·14±0·07, respectively. external surfaces lips have taste buds. histological structure is composed four layers: mucosa, submucosa, muscular, serosa. No muscularis mucosa detected. oesophageal epithelium stratified in pseudostratified , latter with PAS+ basal cells eosinophilic apical cells. A thick layer...
Electrofishing adequacy was tested as a technique to obtain quantitative data of coastal stream fish populations and communities in the Southeast Brazil. Seven field trips, between July/94 July/95, were done 5 localities Ubatiba fluvial system (Maricá, RJ). Seventeen species, among 22 collected, had their numbers estimated through Zipping method, model used test sampling methodology. At each trip, three removals with electrofishing locality and, according number obtained species at...
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The annual flood pulses of central Amazonian rivers inundate marginal forests to 10 m depth or more (Furch & Otto 1987, Junk et al. 1989). regularity this flooding seems have promoted the development a complex relationship between forest plants and fishes that consume their seeds (Goulding 1980). Several fish species migrate into flooded feed on buoyant fruits seeds, many plant reach fruiting peak during season. Fruits been reported adaptive features related water (hydrochory) and/or...
de Macedo‐Soares PHM, Petry AC, Farjalla VF, Caramaschi EP. Hydrological connectivity in coastal inland systems: lessons from a Neotropical fish metacommunity. Ecology of Freshwater Fish 2010: 19: 7–18. © 2009 John Wiley & Sons A/S Abstract – We assessed the influence hydrological structuring communities through seasonal samplings environmental variables and fishes lagoon associated pools Restinga Jurubatiba National Park, Brazil. Community structure attributes such as species richness,...
The relationships between fish composition, connectivity and morphometry of 103 lagoons in nine freshwater ecoregions (FEOW) 2·83° S 37·64° were evaluated order to detect possible congruence the gradient species richness similarities assemblage composition. Most included study <2 km(2) , with a maximum 3975 surface area. Combined area all was 5411 . Number varied locally from one 76. A multiple regression revealed that latitude, attributes connectivity, sampling effort explained large amount...
Length‐frequency analyses showed that male Hypostomus affinis are bigger than females, but H. luetkeni no such differences. The sex ratio was estimated at 1:1 for both species. temporal variation of indicated a decrease in the population when GSI its maximum value, suggesting males less prone to capture during spawning season. According reproductive period, paternal behaviour is proposed reached sexual maturity smaller size luetkeni. Considering length weight relationship and mortality rate...
Aspects of the reproductive biology Astyanax janeiroensis in Ubatiba river Maricá, RJ, Brazil were evaluated order to ascertain whether strategy adopted by species is causally related environmental variables. Specimens collected on a monthly basis from October 1994 September 1995, through electrofishing. The Sex ratio was not significantly different expected frequency 1:1 (G = 1.29; p > 0.50); nonetheless, considering three standard length classes, larger numbers females recorded for higher...
AIM: We present an update on the composition of fish species Restinga de Jurubatiba National Park and Imboassica Lagoon, in northern portion Rio Janeiro State, based collecting efforts almost two decades, historical museum records, a review literature. METHODS: Specimens were collected using variety techniques, mostly between 1994 2012, fixed with use 10% solution formalin subsequently stored 70% alcohol solution. All specimens examined are deposited collections Núcleo em Ecologia e...
Eucinostomus argenteus is widely distributed along the Brazilian coast where it enters bays and lagoons. Imboacica Cabiúnas are small coastal lagoons located in southeastern of Brazil both localities E. considered as a constant species. The diet specimens collected between July 1991 through April 1993 was analysed by frequency occurrence, numeric volumetric methods. predominant items ingested differed each lagoon. In lagoon, stomach content comprised mainly algae, polychaeta, detritus sand...
Camara, E.M.; Caramaschi, É.P.; Di Dario, F., and Petry, A.C., 2018. Short-term changes in two tropical coastal lagoons: Effects of sandbar openings on fish assemblages.Sandbar (SBOs) are among the largest possible disturbances lagoons. This study investigated mechanisms responses assemblages to short-term environmental resulting from several SBOs during 1 year lagoons southeastern Brazil. Lagoons were sampled monthly sites closer to, more distant from, sandbars. A principal component...
The temporal and spatial distribution of the ichthyofauna was assessed in two streams, Caracu São Pedro, affluents Rio Paraná, from March 1991 through February 1992. Samples were taken along using sieves (three sites on Pedro), gill nets (two Pedro). A total 6,664 specimens belonging to 71 species captured. CPE calculated for each fishing gear. data cumulative frequency indicated that only mouths streams did not reach an asymptote. Constancy analysis showed occasional accessory predominated....
Twenty-two species were registered in the Ubatiba system with a predominance of Characiformes and Siluriformes followed by Cyprinodontiformes, Perciformes Synbranchiformes. Among these four occasional one or two sampled individuals restricted to nine studied sites; other 18 constant high densities at least site. Most sites presented between 11 species, all largely distributed; except for uppermost site, located right over waterfall 4m high, which showed confluence site that species....
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ABSTRACTResource partitioning is important for species coexistence. Species with similar ecomorphology are potential competitors, especially when phylogenetically close, due to niche conservatism. The aim of this study was investigate the resource among populations two lebiasinids (Copella nigrofasciata and Pyrrhulina aff. brevis) that co-occur in a first-order Amazonian stream, analyzing trophic ecology, feeding strategies ecomorphological attributes related use food space by these species....
Population structure, reproductive aspects and feeding ofCyprinodontiformes fishcs (Ostcichthyes) from a coastal slream in soulheastern Brazil.The population of Phallocel'os caudimaculatus (Hensel, 1868), Poecilia vivipara Bloch & Sclmeider (180 I), Phalloptychus januarius 1868) e Jenynsia /ineata (Jenyns, 1842) were studied tive sampling stations the Ubatiba stream, municipality Maricá (State Rio de Janeiro, Brazil).In relation to lhe populalion struclure, P. was more represenlalive...
BOTUCATU, SÃO PAULO).Patterns of spatial occupation, feeding, and reproductive period two species, Corydoras aeneus Corydo ras gr.earlae (Siluroidei, Callichthyidae), coexistents in the Alambari River (Botucatu, São Paulo), were studied.High diet overlap, partial segregation, well differentiated strategies verified.These findings do not permit to evidence occurrence competitive interactions between analysed species.
Following behavior is a widespread feeding tactic among marine fishes, but remains poorly documented for freshwater fishes. The present study describes such association between two species: the minute armored catfish Parotocinclus maculicauda and South American darter Characidium sp. During underwater observations in an Atlantic Forest stream, we recorded closely following P. (<5cm), catching particles dislodged by this catfish's grazing activity. displayed considered opportunistic...