|
|
|
|
|
Pazianoto,Laryssa H. R.; Cionek,Vivian de M.; Fogaça,Fábio N. O.; Benedito,Evanilde. |
ABSTRACT Diet, energy density (ED) and relative condition factor (Kn ) were used to investigate the energetic assimilation of the invasive fish Hemiodus orthonops under different environmental condition of the upper rio Paraná floodplain. Samples were taken in June and September 2013 and 2014. Nutrient content was determined for sediment. The diet was combined in the Food Index (IAi%), ED was expressed in Kcal/g of dry weight and Kn was calculated by: Kn = Wt/We, where Wt is the total weight and We the expected weight. Detritus/sediment prevailed in the stomachs of specimens from Ivinhema and Baia, while Algae was the main item in Paraná, reflecting the resource availability. ED and Kn from Ivinhema specimens were the greatest, consequence of the quality... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological invasions; Detritivory; Energetic density; Hemiodus orthonops; Relative condition factor. |
Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252016000100225 |
| |
|
|
Pazianoto,Laryssa H. R.; Souza,Maíra L. S.; Veronezzi,Ana Lúcia; Benedito,Evanilde. |
O presente estudo teve por objetivo determinar o conteúdo calórico e fator de condição de uma espécie de peixe iliófaga e outra piscívora, na planície de inundação do alto rio Paraná, e suas possíveis diferenças sazonais e temporais. As espécies foram amostradas entre junho de 2010 e março de 2011 e, dos indivíduos que se apresentaram no estádio de desenvolvimento gonadal em repouso, extraíram-se músculos próximos à nadadeira dorsal, os quais foram enxaguados em água destilada, e secos a 60°C. Posteriormente, foram macerados e queimados em bomba calorimétrica. Em relação aos subsistemas, a densidade energética e o fator de condição apresentaram diferenças significativas apenas para Prochilodus lineatus (Valenciennes, 1837), com os maiores valores... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Pseudoplatystoma corruscans; Prochilodus lineatus; Densidade energética; Fator de condição; Planície de inundação. |
Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000300001 |
| |
|
|
Alves,Gustavo Henrique Zaia; Santos,Regiane da Silva; Figueiredo,Bruno R. S.; Manetta,Gislaine Iachstel; Message,Hugo José; Pazianoto,Laryssa H. R.; Guimarães,Gilson Burigo; Benedito,Evanilde; Couto,Edivando Vitor do. |
Abstract: The Devonian Escarpment (DEEPA), located in the south of Brazil, represents an important area of environmental preservation composed by grasslands, gallery forests, as well as rock outcrops and archaeological sites. A law project (LP 527/2016), which suggests a reduction of the DEEPA area in approximately 70% of its original area (from 393,579 to 125,895 ha), is currently being processed in the Paraná State House of Representatives. Such reduction seems to be related to economic interests (mainly agriculture and mining) in the state of Paraná. If approved, LP 527/2016 will allow farmers to deliberately expand their activities, with the suppression of natural forest as main consequence. Additionally, loss of faunal diversity, contamination of... |
Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Environmental law; Grassland; Devonian Escarpment; Biodiversity loss; Geodiversity. |
Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032019000100401 |
| |
|
|
|