Consulta: creatorFacets:"Caramaschi,Érica Pellegrini"
Registros recuperados: 8
Data/hora: 11/06/2024 06:56:47

Morphological variation among populations of Hemigrammus coeruleus (Characiformes: Characidae) in a Negro River tributary, Brazilian Amazon
Provedor de dados: 83
Autores: Lazzarotto,Henrique; Barros,Thiago; Louvise,José; Caramaschi,Érica Pellegrini.
ABSTRACT We explored patterns of phenotypic variation in Hemigrammus coeruleus from the Unini River basin, a blackwater river in the Brazilian Amazon. Geometric morphometrics was used to evaluate variation in body shape among populations from four tributaries (UN2-UN5). We found no evidence for sexual dimorphism in body size and shape. However, morphological differences among populations were detected as the analyses recovered significant groups corresponding to each sub-basin, with some overlap among them. The populations from UN2, UN3 and UN5 had more elongate bodies than fish from UN4. The most morphologically divergent population belonged to UN4, the tributary with the most divergent environmental conditions and the only one with seasonally-muddy...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Geometric morphometrics; Morphology; Ornamental fish; Phenotypic plasticity; Populations.
Ano: 2017
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252017000100218

Estrutura populacional, aspectos da reprodução e alimentação dos Cyprinodontiformes (Osteichthyes) de um riacho do sudeste do Brasil
Provedor de dados: 104
Autores: Aranha,José Marcelo Rocha; Caramaschi,Érica Pellegrini.
The population structure, reproductive aspects and feeding of Phalloceros caudimaculatus (Hensel, 1868), Poecilia vivipara Bloch &amp;amp; Schneider (1801), Phalloptychus januarius (Hensel, 1868) e Jenynsia lineata (Jenyns, 1842) were studied in five sampling stations in the Ubatiba stream, municipality of Maricá (State of Rio de Janeiro, Brazil). In relation to the population structure, P. caudimaculatus was more representative upstream; P. vivipara mid-stream and downstream; P. januarius and J. lineata downstream. The species presented preponderance of females, except in the intermediate length classes. The occurence of imatures and females with young pointed out a long reproductive period and favoured areas for reproduction of the four species. The...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Cyprinodontiformes; Population structure; Feeding; Reproduction; Coastal stream.
Ano: 1999
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751999000300005

Dinâmica alimentar de Rhaphiodon vulpinus Agassiz, 1829 (Teleostei, Cynodontidae) no alto Rio Tocantins (GO) em relação ao represamento pela UHE Serra da Mesa
Provedor de dados: 49
Autores: Pacheco,Andreza Cecília Gomes; Bartolette,Renata; Caluca,José Filipe; Castro,André Luís Moraes de; Albrecht,Míriam Pilz; Caramaschi,Érica Pellegrini.
A dieta e atividade alimentar de Rhaphiodon vulpinus foram estudadas antes e após o represamento do alto Rio Tocantins pela UHE Serra da Mesa, GO, em duas grandes áreas: reservatório e jusante. O conteúdo estomacal de 214 exemplares foi analisado, sendo 46 da fase rio (dez./95 a out./96), 100 da fase enchimento (dez./96 a abr./98) e 68 da fase operação (jun./98 a fev./00). A espécie confirmou-se como piscívora, com consumo eventual de insetos e material vegetal. Na área a jusante, dentre os peixes-presa identificados, nenhum foi comum às três fases. As presas mais importantes foram Geophagus cf. surinamensis, Hemiodus ternetzi e Pimelodus blochii nas fases rio, enchimento e operação, respectivamente. Anchoviella sp. foi exclusiva da fase operação. Já no...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Piscivoria; Cynodontidae; Reservatório; Alimentação; Bacia Tocantins-Araguaia.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032009000300006

Ovary maturation stages and oocyte features in three species of the neotropical fish Hemiodus (Müller, 1842)
Provedor de dados: 52
Autores: Brandão,Claudia Angelica da Silva; Valentim,Maria de Fátima Moraes; Caramaschi,Érica Pellegrini.
Macro- and microscopic ovarian features of Hemiodus microlepis, H. ternetzi and H. unimaculatus were analyzed. Based on these features we proposed an ovarian maturation scale. The nine stages of the preliminary macroscopic fieldwork scale were reduced to five after microscopic analysis of ovaries. The microscopic analysis indicated a group-synchronous oocyte development common to the three species that were characterized as iteroparous synchronous spawners with a total spawning type. The remarkable thickness of the zona radiata layer and the large size of vitellogenic oocytes of Hemiodus ternetzi distinguished this species from the others.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Hemiodontid; Oocyte development; Zona radiata; Fish reproduction; Tocantins River.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000300015

Temporal and spatial distribution of the ichthyofauna in two streams of the upper Rio Paraná basin
Provedor de dados: 52
Autores: Pavanelli,Carla Simone; Caramaschi,Érica Pellegrini.
The temporal and spatial distribution of the ichthyofauna was assessed in two streams, Caracu and São Pedro, affluents of the Rio Paraná, from March 1991 through February 1992. Samples were taken along the streams, using sieves (three sites on the Caracu and two on the São Pedro), and gill nets (two sites on the São Pedro). A total of 6,664 specimens belonging to 71 species were captured. CPE was calculated for each fishing gear. The data for cumulative frequency indicated that only the mouths of streams did not reach an asymptote. Constancy analysis showed that occasional and accessory species predominated. The spectrum of spatial diversity indicated that diversity increased toward the mouth of streams and temporal diversity increased in the high water...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Community structure; Freshwater fishes; Stream ecology.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000200019

Composition and seasonal variation of the ichthyofauna from upper Rio Paraguaçu (Chapada Diamantina, Bahia, Brazil)
Provedor de dados: 52
Autores: Santos,Alexandre Clistenes de Alcântara; Caramaschi,Érica Pellegrini.
The aim of this work was to characterize the composition of the ichthyofauna of the upper course of the Rio Paraguaçu. Two excursions were carried out, one in the dry season, and the other in the rainy season, with 36 localities sampled. A total of 63 species were collected. Multivariate analyses indicated that abiotic variables such as the channel order and altitude were the main influences on the number of species present. The number of species in each excursion was equivalent in the two seasons, suggesting that seasonal changes have little influence on the ichthyofauna of this area.
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Rio Paraguaçu; Chapada Diamantina; Fish community; Abiotic parameters; Seasonality.
Ano: 2007
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132007000400012

Diet of the clupeid fish Platanichthys platana (Regan, 1917) in two different Brazilian coastal lagoons
Provedor de dados: 52
Autores: Aguiaro,Talita; Castelo Branco,Christina Wyss; Verani,José Roberto; Caramaschi,Érica Pellegrini.
Platanichthys platana is considered a constant species in both Cabiúnas and Imboassica lagoons that are characterised by different marine and freshwater inputs, and anthropogenic influences. The stomach content analysis of P. platana captured between July 1991 and July 1993 revealed filamentous algae, detritus, eggs of benthic invertebrates, larvae of chironomids and bivalves as the main food sources in Imboassica lagoon. Small-sized cladocerans, copepods and shrimp larvae were the prevailing items in Cabiúnas lagoon. Seasonal food variations were noted for the fishes of Imboassica lagoon. Diet differences were highlighted within specimens lesser than 40 mm standard length in Imboassica lagoon, and were related to the increase of marine influence due to...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Brazil; Coastal lagoons; Food items; Platanichthys platana.
Ano: 2003
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132003000200013

Stream-dwelling fish communities from an Atlantic rain forest drainage
Provedor de dados: 52
Autores: Mazzoni,Rosana; Fenerich-Verani,Nelsy; Caramaschi,Érica Pellegrini; Iglesias-Rios,Ricardo.
Twenty-two species were registered in the Ubatiba system with a predominance of Characiformes and Siluriformes followed by Cyprinodontiformes, Perciformes and Synbranchiformes. Among these species four were occasional with one or two sampled individuals and restricted to one or two of the nine studied sites; the other 18 species were constant with high densities in at least one site. Most of the sampled sites presented between 11 and 18 species, all largely distributed; except for the uppermost site, located right over a waterfall 4m high, which showed at least four species and for the confluence site that presented 18 species. Canonical Correspondence Analysis indicated that environmental variables explained a great part of the density and distribution...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Coastal stream; Distribution; Community structure; Fish.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000300010