SABIIA - Sistema Aberto e Integrado de Informação em Agricultura (Sabiia)

Bagatini,Yara Moretto; Delariva,Rosilene Luciana; Higuti,Janet.

This study aimed to survey the benthic macroinvertebrate fauna of a first order stream located in an agricultural area, and to assess the environmental factors involved in the spatial distribution of this community. Invertebrates were gathered in November 2007 at three sampling sites distributed along the Itiz Stream, located in Marialva municipality, Paraná State. At each site, we measured the physical and chemical variables of the water, and then took four samples, using Surber sampler. In order to evaluate the differences in density, richness, diversity and evenness, we employed an ANOVA and a DCA to summarize biotic data. The invertebrates were categorized into functional groups and the BMWP score was applied to calculate the biological integrity of...

Diet and ecomorphological relationships of an endemic, species-poor fish assemblage in a stream in the Iguaçu National Park

Palavras-chave: Composition; Biomonitoring; Functional groups; Aquatic insects.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032012000100023

Neves,Mayara Pereira; Delariva,Rosilene Luciana; Wolff,Luciano Lazzarini.

This study investigated the morphological and dietary relationships of the fish assemblage in a stream with an endemic fauna and low species richness. The ichthyofauna was sampled quarterly from September 2011 to July 2012, through the electrofishing technique. The stomach contents of 419 individuals belonging to seven species were analyzed by the volumetric method, and the ecomorphological traits of 30 specimens of each species were estimated. The main food items consumed were detritus, aquatic and terrestrial insects, and other aquatic invertebrates. We observed low levels of trophic niche breadth and diet overlap between most species. The PCA scores indicated the occurrence of three ecomorphotypes. PCA axis 1 segregated at one extreme, species with...

Diet and trophic guilds of fish assemblages in two streams with different anthropic impacts in the northwest of Paraná, Brazil

Palavras-chave: Feeding ecology; Iguaçu River basin; Morphotypes; Niche overlap; Stream fishes.

Ano: 2015

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252015000100245

Rev. Bras. Zool.

Bonato,Karine Orlandi; Delariva,Rosilene Luciana; Silva,Jislaine Cristina da.

In the present study, we describe the diets of the fish assemblages in two streams in the Maringá region of Paraná that are under the influence of different anthropic impacts. We also evaluate how the origin and use of food resources varies temporally and spatially and how the trophic organization of the fish assemblages differs between the two streams. Fish were collected every two months from October 2006 to October 2007 using sieves, seining and closing nets along two 50 m stretches of each stream. We used the volumetric method to analyze the stomach contents of 599 fish belonging to 15 species. We then employed ANOSIM, SIMPER, NMDS and cluster analyses (using the Bray-Curtis index) to examine how different factors (species, stream, sampling site and...

Diet and trophic structure of the fish fauna in a subtropical ecosystem: impoundment effects

Palavras-chave: Food resources; Seasonality; Spatial variation; Urbanization.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702012000100004

Delariva,Rosilene Luciana; Hahn,Norma Segatti; Kashiwaqui,Elaine Antoniassi Luiz.

This study examined the diet and trophic structure of the fish fauna, over temporal and spatial scales, as affected by the impoundment of the Iguaçu River in the region of Salto Caxias, Paraná State, Brazil. Sampling was conducted before (March 1997 - February 1998) and after the impoundment (March 1999 - February 2000), at four sampling sites. The stomach contents were analyzed by the volumetric method. The species could be organized in 10 trophic guilds: algivores, carcinophages, detritivores, herbivores, aquatic insectivores, terrestrial insectivores, invertivores, omnivores, piscivores, and planktivores; the first and last guilds were represented only in the post-impoundment period. Similarity patterns and feeding changes were summarized by a...

Diet of a catfish before and after damming of the salto caxias reservoir, iguaçu river

Palavras-chave: Feeding; Guilds; Iguaçu River; Reservoir; Temporal changes.

Ano: 2013

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252013000400891

BABT

Delariva,Rosilene Luciana; Hahn,Norma Segatti; Gomes,Luiz Carlos.

This study evaluated the diet of Pimelodus sp., before and after damming of Salto Caxias, (waterfall in the Iguaçu river), as well spatial and ontogenetic diet shift. Surveys were carried out from March 1997 to February 1998 (before damming) and from April 1999 to January 2000 (after damming) inside the reservoir and adjacent tributaries. Stomach contents analysis of 682 specimens revealed omnivory with high degree of trophic opportunism to this species. Analysis of variance (three way ANOVA) for scores produced from Detrended Correspondence Analysis (DCA) yielded a significant interaction between the damming phases and size of the individuals (juveniles and adults) (F = 4.68; P = 0.04). After damming, adults exploited mainly fish, whereas the juveniles...

Effects of river damming in Neotropical piscivorous and omnivorous fish: feeding, body condition and abundances

Palavras-chave: Catfish; Diet; Trophic opportunism; Reservoir.

Ano: 2007

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000500004

Pereira,Larissa Strictar; Agostinho,Angelo Antonio; Delariva,Rosilene Luciana.

ABSTRACT The increase in abundance of small-sized fishes is common after a reservoir is formed. There is an increase in the consumption of fish, from typically piscivorous fish to opportunistic species that take advantage of abundant resources. This study aims to evaluate the effects of diet changes induced by damming on the feeding activity and condition factor of typically piscivorous (Hoplias aff. malabaricus and Oligosarcus longirostris ) and opportunistic (Astyanax lacustris (ex Astyanax altiparanae ) and Pimelodus britskii ). Sampling was conducted before and after the impoundment in the Iguaçu River in the region of Salto Caxias, Paraná State, Brazil. Stomach contents were analysed by the volumetric method. Feeding activity and body condition were...

Feeding of Acestrorhynchus lacustris (Characidae): a post impoundment studies on Itaipu reservoir, upper Paraná River, PR

Palavras-chave: Condition factor; Feeding activity; Opportunist diet; Piscivory; Reservoir.

Ano: 2016

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000100221

BABT

Hahn,Norma Segatti; Delariva,Rosilene Luciana; Loureiro,Valdirene Esgarbosa.

With objective to know feeding spectrum of Acestrorhynchus lacustris (Reinhardt, 1874), a middle size predator in different places of influence area of Itaipu reservoir, stomach contents were analyzed. Samples were collected from March 1984 to February 1989 from Itaipu Reservoir and its adjacent areas. Its fed mainly on fishes, but it was an opportunistic (consumed 17 species of prey). Despite of the wide feeding spectrum, few preys were dominant in the diet, according to the different habitats sampled. As a result, it significant spatial differences in the diet was observed. Was observed through "Detrented Correspondence Analysis" (DCA) these were divided into three groups in relation with diet: preys from upstream, with higher scores; preys from the...

Fish fauna in forested and rural streams from an ecoregion of high endemism, lower Iguaçu River basin, Brazil

Palavras-chave: Feeding; Predation; Characidae; Upper Paraná River; Itaipu Reservoir.

Ano: 2000

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132000000200010

Delariva,Rosilene Luciana; Neves,Mayara Pereira; Larentis,Crislei; Kliemann,Bruna Caroline Kotz; Baldasso,Mara Cristina; Wolff,Luciano Lazzarini.

Abstract The fish fauna of eight streams with different land uses of their watersheds (forested and rural areas) in the lower Iguaçu River basin was inventoried, in order to evaluate the composition and species richness. The fishes were sampled quarterly from May 2015 to February 2016, using the electrofishing technique. In total, 4,239 individuals were captured, belonging to six orders, 11 families and 26 species. The orders Siluriformes and Characiformes, and the families Characidae and Trichomycteridae were the most specious. Of the total species sampled, 65% were endemic to the Iguaçu River basin, four are not described and four are non-native. As expected to the Iguaçu River basin, the inventoried fauna revealed low richness and high endemism, however...

Fish fauna of the Pelotas River, Upper Uruguay River, southern Brazil

Palavras-chave: Freshwater; Ichthyofauna; Inventory; Iguassu ecoregion; Land use.

Ano: 2018

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032018000300304

Delariva,Rosilene Luciana; Neves,Mayara Pereira; Baumgartner,Gilmar; Baumgartner,Dirceu.

Abstract: The fish fauna of the Pelotas River, in the Upper Uruguay ecoregion of southern Brazil was inventoried. Samplings were performed quarterly between August 2013 and May 2014 at 14 sites in the Pelotas River and its tributaries, using gill nets of different mesh sizes, sein nets, cast nets and electrofishing. In total, 7,745 specimens were recorded, comprising 46 species, belonging to 13 families and five orders. Approximately 80% of the species belonged to the orders Characiformes and Siluriformes, as well as the families Characidae and Loricariidae, which included a greater number of species. Of the total species, 24% were endemic to the Upper Uruguay River, four were identified only at the genus level and none was considered non-native....

Fish larvae assemblages in two floodplain lakes with different degrees of connection to the Paraná River, Brazil

Palavras-chave: Freshwater; Upland river; Ichthyofauna; Inventory; Species richness.

Ano: 2019

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000300308

Daga,Vanessa Salete; Gogola,Tatiane Mary; Sanches,Paulo Vanderlei; Baumgartner,Gilmar; Baumgartner,Dirceu; Piana,Pitágoras Augusto; Gubiani,Éder André; Delariva,Rosilene Luciana.

The objective of this study was to assess the abundance, attributes of assemblages, and spatial and temporal distributions of fish larvae and their relationships with some abiotic variables in two floodplain lakes with different degrees of connection to the Paraná River in Ilha Grande National Park, PR, Brazil. Four sampling sites were chosen, two in each floodplain lake. Night samples were taken with plankton nets during three spawning seasons (monthly, from October to March) from 2001 to 2005. The highest diversity and abundance were recorded at Saraiva Lake, with 25 taxa being identified. In Xambrê Lake, only sedentary species were captured, and the most abundant species were Plagioscion squamosissimus and Hypophthalmus edentatus. The greatest abundance...

Food-resource partitioning among fish species from a first-order stream in northwestern Paraná, Brazil

Palavras-chave: Ichthyoplankton; Fish reproduction; Parque Nacional de Ilha Grande; Upper Paraná River.

Ano: 2009

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000300010

Silva,Jislaine Cristina da; Delariva,Rosilene Luciana; Bonato,Karine Orlandi.

This study addressed the feeding ecology of fish fauna from a first-order stream located in a rural area. The purposes were to evaluate the influence of interspecific, seasonal and spatial factors on the diet, examine the dietary overlap, and determine the predominant food sources. Sampling was conducted in December 2007, September 2008, and March 2009, in three 50-m stretches of Itiz stream (upstream, intermediate, and downstream), through electrofishing. A total of 1,102 stomach contents were analyzed from 14 species, by the volumetric method. In general, allochthonous resources were predominant in the diets. Astyanax aff. fasciatus, Astyanax aff. paranae, Astyanax bockmanni, and Bryconamericus aff. iheringi consumed a higher proportion of plant remains,...

Histopathological alterations in Astyanax bifasciatus (Teleostei: Characidae) correlated with land uses of surroundings of streams

Palavras-chave: Allochthonous resources; Diet; Fish fauna; Trophic segregation; Riparian vegetation.

Ano: 2012

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000200014

Nimet,Jardel; Amorim,João Paulo de Arruda; Delariva,Rosilene Luciana.

ABSTRACT This study evaluated gills and liver of Astyanax bifasciatus as histological biomarkers for biomonitoring of streams along areas with different land uses. The fish were collected by electrofishing in six streams in the basin of the lower Iguaçu River. The objective was to correlate the presence and degree of histopathological alterations of gills and liver with the environmental variables among streams along different land uses. The low frequency of histopathological alterations found in fish from the forest streams suggested normal organ functioning. In fish from the rural and urban streams, the histopathological alterations occurred were in higher frequency, indicated light to moderate damage in gills and liver of fish from the rural streams,...

Ichthyofauna of streams from the lower Iguaçu River basin, Paraná State, Brazil

Palavras-chave: Biomarkers; Fish; Histopathology; Lotic environments; Urban impact.

Ano: 2018

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100216

Larentis,Crislei; Delariva,Rosilene Luciana; Gomes,Louise Cristina; Baumgartner,Dirceu; Ramos,Igor Paiva; Sereia,Diesse Aparecida de Oliveira.

Abstract The drainages of the Iguaçu River basin, as well as the main channel of the river, have peculiar characteristics resulting from geomorphological processes in this area, including the formation of the Iguaçu River Falls. This slope in the lower portion of the basin is a biogeographical barrier to many organisms. In this study was inventoried the fish fauna of streams of the lower Iguaçu River basin, evaluating possible differences in the species composition upstream and downstream of this biogeographical barrier. Sampling were conducted between 2004 and 2013, in five streams, three upstream and two downstream of the Iguaçu River Falls, using electrofishing. The nMDS analysis was run to investigate possible groupings of similar fauna between the...

Use of food resources by small fish species in Neotropical rivers: responses to spatial and temporal variations

Palavras-chave: Biogeographic barrier; Endemics species; Fish.

Ano: 2016

URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032016000300203

Rev. Bras. Zool.

Silva,Jislaine Cristina da; Gubiani,Éder André; Delariva,Rosilene Luciana.

Spatial and temporal variations in food supply play a crucial role in the determination of the patterns of food use by fish species. This study evaluated spatial and temporal variations in food utilization by small fish species of the Verde River, Upper Paraná River Basin, state of Mato Grosso do Sul, Brazil. Samplings were conducted in the rainy and dry periods, from November 2010 to August 2012, using trawls, cast nets and gillnets, in nine sampling sites grouped into three biotopes: upstream and downstream of the Branca Waterfall, and tributary. The stomach contents of 3,263 individuals of 12 small species were examined according to the volumetric method. Altogether, 31 food items were identified. Overall seed consumption was greater in the rainy...