A5052306762- Fish biology, ecology, and behavior
- Fish Biology and Ecology Studies
- Fish Ecology and Management Studies
- Environmental Sustainability and Education
- Aquatic life and conservation
- Food and Agricultural Sciences
- Fire effects on ecosystems
- Parasite Biology and Host Interactions
- Ecology and Vegetation Dynamics Studies
- Genetic diversity and population structure
- Physiological and biochemical adaptations
- Aquaculture Nutrition and Growth
- Indigenous Health and Education
- Rangeland and Wildlife Management
- Animal Behavior and Reproduction
- Protein Hydrolysis and Bioactive Peptides
Universidade Estadual de Maringá
1998-2020
Colorado State University
1999
Abstract This study evaluated the influence of flood regime Cuiabá River on reproductive dynamics fish species with different strategies. Sampling was carried out at ten sites in basin, between March 2000 and April 2004. The strategies were long‐distance migrant (LM), short‐distance (SM), sedentary parental care (PC) or SM internal fertilization (IF). Period, duration intensity floods flooding attributes considered. Duration time spawning using index activity (IRA), inferences concerning...
Abstract The reproductive strategies of potamodromous fish the Plata basin involve upstream migration and passive downstream movements eggs larvae for dozens kilometres. At end movements, fry need marginal lagoons or bays in order their development to be successful. construction reservoirs, often series, has interrupted is perhaps main factor decrease abundance migratory basin. In an attempt lessen impact on migrations, passages (floodgates, elevators mainly ladders) have been constructed...
Relationships between ovarian structure, oocyte structure/development, and parental care/life history strategies of six loricariid catfishes common in the upper Paraná River, Brazil were examined with analysis catch data, relative gonad weight, histology, microscopy. Three life observed. Loricariichthys platymetopon , sp. And Loricaria produce several small clutches large eggs over a protracted spawning period. Males these species guard their larvae, which are transported as mass on ventral...
Hoplias malabaricus, the common trahira, extended its range into Iguaçu River sometime in last decades. To determine levels of genetic differentiation neighboring basins this nominal taxon, as well to unveil source invading population, we analyzed patterns similarity RAPD-PCR genomic markers samples from Paraná, and Tibagi Rivers. The high diversity Paraná Rivers suggested strong population structuring or even occurrence undescribed species. All alleles sample headwaters were present River,...
The flood pulse is the main driving force for communities' structure and functioning in river-floodplain systems. High synchrony exists between hydrological cycle reproductive events several fish species. However, species with different strategies can respond ways to regime. Thus, this study intends evaluate relationship recruitment of guilds freshwater attributes (flood duration, maximum annual water level, delay flood) from a time series 20 years Upper Paraná River floodplain, Brazil....
This work aimed to determine which population features were important the colonization process of Astyanax altiparanae in Corumbá Reservoir. The species presented wide spatial-temporal distribution, caught all months and sites. Higher CPE values recorded upstream from reservoir during filling phase. In this phase, reproductive activity was intense moderate tributaries. However, a fall abundance juveniles observed after formation reservoir. Among most relevant grant successful geographic...
Abstract Major changes to local river habitats, after impoundment, are expected restrict the reproductive activity of fishes with migratory strategies, although not have relevant effects on other strategies. The different strategies was evaluated along a longitudinal gradient before, and after, formation reservoir Tocantins River (Tocantins State, Brazil). Samples were collected at six sites distributed 80‐km stretch (R1 R6 in upstream–downstream direction) before impoundment. highest mean...
Abstract This study focused on the distribution of fish with high reproductive activity along a basin, using 430 km stretch Cuiabá River in Brazil as model. The main objective this was to identify those that migrate long distances for reproduction, among all basin species. Thus, set working criteria are proposed classify species according their behaviour ( i.e ., and distribution). Samplings were performed encompassing several environments (river, channels lakes) during periods (between...
Este trabalho foi desenvolvido com o intuito de analisar saber tradicional dos pescadores artesanais e alunos sobre os peixes do rio Parana a regiao Porto Rico-PR, fim estabelecer dialogo deste conhecimento cientifico na escola estadual local. Para isto, adotada pesquisa participante que oferece oportunidades troca saberes entre pesquisadores individuos proximos ou distantes ambiente academico. A coleta dados realizada por meio questionarios gravacoes audio video. As respostas foram...