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Registros recuperados: 127
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What do we know about Anisotremus moricandi (Teleostei: Haemulidae), an endangered reef fish? Biota Neotropica
Dias,Thelma Lúcia Pereira.
This article provides general information on habitat, behavior, and conservation status of Anisotremus moricandi and reinforces its distribution to the western Atlantic. The species inhabits rocky reefs with low coralline overgrowth and it is found in reef crevices in small groups or solitary individuals. The distribution of A. moricandi seems to be discontinuous occurring in the coasts of Panama (Caribbean side), Aruba, Colombia, Orchila Island (Venezuela) and in Brazil (from Ceará State to Espírito Santo State).
Tipo: Info:eu-repo/semantics/article Palavras-chave: Coastal reefs; Distribution; Habitat; Conservation; Behavior; Northeastern Brazil.
Ano: 2007 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032007000200037
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Occupancy of different types of forest habitats by tyrant flycatchers (Passeriformes: Tyrannidae) Biota Neotropica
Rosa,Gabriel Lima Medina; Anjos,Luiz dos; Moura,Maurício Osvaldo.
The abundance distribution of the tyrant flycatchers (Tyrannidae family) was evaluated in three main forest habitats of Mata dos Godoy State Park (PEMG), north of the state of Paraná. We conducted point counts and from the collected data we calculated the Index of Point Abundance (I. P. A.) of each species in the habitats of interior of mature forest (FLI), slope forest (FLE) and reforestation (REF). Among the 22 recorded species, eight occurred in all habitats, while other eight occurred in two habitats and six were exclusive of one habitat. Among the 16 recorded species in more than one habitat, 10 were more abundant in only one. On the contrary to our expectation and despite the clear habitat segregation among species, the abundance distribution was not...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Habitat; Foraging; Abundance; Distribution; Frugivory.
Ano: 2013 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032013000400190
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Courtship, vocalization, and tadpole description of Epipedobates flavopictus (Anura: Dendrobatidae) in southern Goiás, Brazil Biota Neotropica
Costa,Ronan Caldeira; Facure,Kátia Gomes; Giaretta,Ariovaldo Antonio.
Epipedobates flavopictus is a diurnal, aposematic dendrobatid with a wide distribution in seasonal wet tropical regions of Brazil. We describe the daily period of vocalization, advertisement call, courtship behavior, and tadpole of E. flavopictus from a previously unknown population in southern Goiás and compare theses features with that of other populations. Studies were carried out in November (2004) and February (2005). We counted the number of calling males and duration of calling bouts in the morning and evening periods. The advertisement call was recorded with a digital recorder. Tadpole description was based on specimens collected in pools. Males called from well-illuminated sites such as rocky fields, rain channels, and borders of riverine forests....
Tipo: Info:eu-repo/semantics/article Palavras-chave: Populational variation; Brazilian Cerrado; Habitat; Pattern of activity; Behavior; Reproduction; Advertisement call.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1676-06032006000100006
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Morphological patterns of fish and their relationships with reservoirs hydrodynamics BABT
Cunico,Almir Manoel; Agostinho,Angelo Antonio.
The aim of this study was to determine morphological patterns of the most abundant fish species found in reservoirs with different hydraulic retention times and stages of colonization, considering habitat strata and feeding strategies. Samplings were carried out in six Paraná State (Brazil) reservoirs, and morphological data were obtained from 15 individuals of 17 fish species. Ecomorphological attributes that best segregated species, were selected using Discriminant Analysis. These selected attributes were later used in a Principal Components Analysis (PCA). Differences among reservoirs concerning occupation of the ecomorphological space were tested through analysis of variance (null models). The six reservoirs differed in the occupation of the fish...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Ecomorphology; Feeding strategies; Habitat; Reservoir.
Ano: 2006 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132006000100015
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Planktonic and non-planktonic rotifers in two environments of the Upper Paraná River floodplain, state of Mato Grosso do Sul, Brazil BABT
Bonecker,Cláudia C.; Lansac-Tôha,Fábio A.; Rossa,Dayane C..
Investigations were carried out for the composition and occurrence of rotifer taxa of different forms and sizes during two distinct hydrological periods, in two environments (river and lake). Two sampling stations were established in open water of each environments. Surface samples were taken daily for 14 days. The faunistic similarity between the environments was established using Jaccard's index. One hundred and fourty three taxa were identified. The largest number of taxa was recorded in the river. Faunistic similarity between these environments was greater during high water. The planktonic taxa predominated and the difference for the non-planktonic ones was not marked. Non-planktonic taxa predominated in the river, while both types were numerous in the...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Rotifers; Size classes; Habitat; Floodplain; Brazil.
Ano: 1998 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89131998000400009
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Effects of natural and anthropogenic environmental changes on riverine fish assemblages: a framework for ecological assessment of rivers BABT
Tejerina-Garro,Francisco Leonardo; Maldonado,Mabel; Ibañez,Carla; Pont,Didier; Roset,Nicolas; Oberdorff,Thierry.
Freshwater is a basic need for the mankind. Effective biological tools (ecologically based, efficient, rapid and consistently applicable to different ecological regions) are needed to measure the "health" of rivers. Adapting such tools over a broad geographic area requires a detailed understanding of both the patterns of organisms assemblage composition and distribution within and among water bodies under natural conditions, and the nature of the major environmental gradients that cause or explain these patterns. A comprehensive review of the available litterature dealing with the identification of environmental factors structuring riverine fish assemblages under natural conditions permits to identify the most consistent ones.
Tipo: Info:eu-repo/semantics/article Palavras-chave: Biological indices; Fish community; Environmental parameters; Habitat.
Ano: 2005 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132005000100013
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Occurrence of entomopathogenic nematodes in Polish soils Ciência Rural
Tumialis,Dorota; Pezowicz,Elżbieta; Skrzecz,Iwona; Mazurkiewicz,Anna; Maszewska,Justyna; Pietraszczyk,Joanna Jarmuł; Kucharska,Kornelia.
ABSTRACT: Entomopathogenic nematodes ( Steinernematidaeand Heterorhabditidae) were studied in Polish soils according to the: season, habitat and altitude. In total, 167 soil samples were taken from 111 localities in Poland along north-south transect. Entomopathogenic nematodes were isolated from 53 soil samples (31.7%). Nematodes species were identified genetically from 16 samples, and in all other 37 samples nematodes were determined to the genus level. Three species of the genus Steinernema ( Steinernema kraussei, S. feltiae, S. carpocapsae) and one of the genus Heterorhabditis( Heterorhabditis megidis) were recorded. Steinernema feltiaewas the most common species. There was not a significant association between the occurrence of nematodes and season...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Distribution; Steinernema; Heterorhabditis; Poland; Season; Habitat.
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000701126
Registros recuperados: 127
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