Consulta: creatorFacets:"Duca,Charles"
Registros recuperados: 11
Data/hora: 06/06/2024 01:19:59

Cost of territorial maintenance by Parodon nasus (Osteichthyes: Parodontidae) in a Neotropical stream
Provedor de dados: 83
Autores: Silva,Samuel Elias; Assunção,Wilhan R. C.; Duca,Charles; Penha,Jerry.
The combined demand over a certain resource may exceed its immediate supply, which can then lead to competition between individuals. This competition may result in territorial behavior. In this study we determine the density and spatial distribution, describe the interactions arising from territorial behavior and evaluate the costs of keeping the territories defended by adults of Parodon nasus. The study was conducted in Camarinha Stream located in the Serra das Araras Ecological Station, Porto Estrela, State of Mato Grosso, Brazil. The density was constant throughout the length of the stream, with a mean (± standard deviation) of 1.01 ind./m² (± 0.14). Our results show that the spatial distribution of individuals in the area ranged between uniform and...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Spatial distribution; Territory size; Foraging; Resting time; Territory defense.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252009000400017

Temperature affects the hypoxia tolerance of neotropical Cichlid Geophagus brasiliensis
Provedor de dados: 83
Autores: Pereira,Jéssica A.; Veronez,Alexandra C.S.; Coppo,Gabriel C.; Duca,Charles; Chippari-Gomes,Adriana R.; Gomes,Levy C.
ABSTRACT Oxygen and temperature are the most limiting factors in aquatic environments. Several species are exposed to variations of these factors in water because of physical, chemical and biological processes. The objective of this study was to evaluate the metabolic profile and the tolerance to the hypoxia of Geophagus brasiliensis exposed to changes in temperature and oxygen availability. The fish were exposed to 20 and 90% of oxygen saturation combined with different temperatures (20°, 24° and 28° C) for 8 h. Hepatic and muscular glycogen, as well as the activities of lactate dehydrogenase (LDH), malate dehydrogenase (MDH), citrate synthase (CS) and their ratios were evaluated. Both glycogen and MDH activity showed a significant difference in the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Aerobic and anaerobic pathways; Behavior; Metabolism; Oxygen.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252018000100202

Diet of bromeliad-frog Phyllodytes luteolus (Anura, Hylidae) in Atlantic Forest environments: what have the frogs been eating outside sandy coastal plains?
Provedor de dados: 84
Autores: Mageski,Marcio Marques; Campinhos,Elaine Costa; Duca,Charles; Stein,Maria Carolina; Oliveira,Melissa Peron de; Clemente-Carvalho,Rute Beatriz Garcia.
Abstract Knowledge about the diet of anurans in different environments is essential to understanding important aspects of their trophic ecology. The bromeliad-frog Phyllodytes luteolus inhabits tank bromeliads in sandy coastal plains and lowland forests on the mainland, as well as a continental island in southeastern Brazil. In this work, we describe and analyze the diet of P. luteolus in three environments. We obtained the consumed prey items of 92 frogs (32 from sandy coastal plain, 32 from lowland forest and 28 from the island) via a stomach-flushing procedure. We found some variations in consumed prey composition and prey volume across populations, but ants represented the most important consumed prey in all environments. Only ants had a relative...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibians; Lowland forest; Prey; Restinga; Trophic ecology.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492019000100229

Anuran species in a remnant of the Atlantic rainforest in an urban area
Provedor de dados: 84
Autores: Mageski,Marcio Marques; Silva-Soares,Thiago; Duca,Charles; Santos,Débora Cristina Baptista Medeiros de Oliveira; Jesus Filho,Paulo Roberto de; Costa,Larissa Corteletti da; Clemente-Carvalho,Rute Beatriz Garcia.
Abstract Forest fragments in urban areas have many habitat resources that frogs use for refuge, reproduction and growth. Knowledge of an anuran assembly is the first step towards understanding the importance of these forest fragments in areas highly threatened by anthropogenic actions. We sampled anurans during the day and night from November 2012 to August 2013 through visual and acoustic surveys. We found 333 individuals belonging to 19 species. The highest richness and abundance were recorded in January whereas the lowest richness and abundance were recorded in June. Most species were found in open areas. Our results highlight the importance of well-studied urban fragments for the anuran community. The conservation of these habitats may ensure the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Amphibian; Community; Habitat loss; Refuge; Conservation.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492018000100215

A new host for Philornis torquans (Diptera, Muscidae) from the Brazilian Cerrado
Provedor de dados: 84
Autores: Couri,Márcia Souto; Barbosa,Leandro; Marini,Miguel Ângelo; Duca,Charles; Pujol-Luz,José Roberto.
Abstract Philornis larvae and pupae were collected in nestlings of Neothraupis fasciata (Lichtenstein), the White-banded Tanager (Passeriformes, Thraupidae), in three breeding seasons, between October and November 2003-2005 in a reserve in central Brazil. Here, we present biological data, diagnosis to the recognition of the species and a key to the segregation of species occurring in the Cerrado. The larvae were intradermic in the nestlings and the pupae were collected in the nests after the birds have abandoned them. The immatures collected were taken to the laboratory and reared under laboratory conditions, until emergence. The species identified as Philornis torquans (Nielsen), is here firstly recorded from the Brazilian Cerrado, and firstly recorded...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Larvae; Cerrado vegetation; Myiasis; New record; Parasites.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0031-10492018000100255

Multiple nesting attempts and long breeding seasons of Mimus gilvus (Aves: Mimidae) in southeastern Brazil
Provedor de dados: 103
Autores: Morais,Rodrigo; Araújo,Luiz Carlos de; Silva,Gleidson Ramos da; Duca,Charles.
ABSTRACT This study describes aspects of the life history of the Tropical Mockingbird Mimus gilvus (Vieillot, 1808), including the breeding period, clutch size, nestlings and a list of plants used for nesting. Nests were monitored in an area of Restinga (sand-coastal plain) habitat in a protected area in southeastern Brazil. The data from 181 nests during five breeding seasons (2010-2014) showed that the Tropical Mockingbird has a long breeding season (26.1 ± 2.6 weeks) with up to two peaks of active nests from August to March. The breeding pairs made up to four nesting attempts in the same breeding season. The mean (± SD) clutch size was 2.4 ± 0.6 eggs (n = 169). The mean (± SD) incubation period was 14 ± 0.6 days, and the nestling remained in the nest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Breeding biology; Clutch size; Re-nesting; Restinga; Tropical Mockingbird.
Ano: 2019
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702019000100307

Passeriformes: nest predators and prey in a Neotropical Savannah in Central Brazil
Provedor de dados: 103
Autores: França,Leonardo F.; Sousa,Nadinni O. M.; Santos,Luane R. dos; Duca,Charles; Gressler,Daniel T.; Borges,Fábio J. A.; Lopes,Leonardo E.; Manica,Lilian T.; Paiva,Luciana V.; Medeiros,Rita C. S. de; Marini,Miguel Â.
The identification of predators of birds' nests, crucial to a better understanding of predator-prey interactions, remains poorly known. Here we provide evidence that birds, and especially passerines, may depredate birds' nests in the Cerrado (Neotropical Savannah) of Central Brazil. Data was collected primarily in a Conservation Unit (Estação Ecológica de Águas Emendadas) during the breeding season, between 2003 and 2007. We report and discuss details on 14 events of nest predation, 12 of which by passerines, mostly by curl-crested jays - Cyanocorax cristatellus (Temminck, 1823). The results of our study suggest that the role of birds as nest predators in the Cerrado has been underestimated and needs to be further investigated.
Tipo: Info:eu-repo/semantics/other
Palavras-chave: Cerrado; Bird; Passerine.
Ano: 2009
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702009000400028

Breeding biology of Tyrannus melancholicus (Aves: Tyrannidae) in a restinga reserve of southeastern Brazil
Provedor de dados: 103
Autores: Daros,Hermes; Dutra,William Barbosa; Duca,Charles.
ABSTRACT Existing knowledge of the breeding success and life history characteristics of most Neotropical bird species is scarce. Here, we help fill this gap by analyzing aspects of the breeding biology of the Tropical Kingbird Tyrannus melancholicus (Vieillot, 1819), which is a good model for this kind of study as it is a common species occurring in various environments, including urban areas, but little is known about its life history. We provide results concerning the breeding period, clutch size, incubation and nestling periods, description of nests, eggs and nestlings, and the plants used for nest sites by this species. Fifty-four nests were monitored over two seasons (2012-2014) in a protected area in southeastern Brazil. Nesting began at the end of...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Atlantic Forest; Breeding season; Clutch size; Life history; Tropical Kingbird.
Ano: 2018
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702018000100308

Territory size of three Antbirds (Aves, Passeriformes) in an Atlantic Forest fragment in southeastern Brazil
Provedor de dados: 104
Autores: Duca,Charles; Guerra,Tadeu J.; Marini,Miguel Â.
Territory size is an important ecological attribute of populations that has been considered a factor determines population density. Antbirds is a large group of mainly insectivorous Neotropical passerines, usually well represented in bird communities from forested landscapes in Neotropical region. Territory sizes for three Antbirds, Thamnophilus caerulescens (Vieillot, 1816) (Variable Antshrike), Dysithamnus mentalis (Temmink, 1823) (Plain Antvireo) e Pyriglena leucoptera (Vieillot, 1818) (White-shouldered Fire-eye), were mapped and their area estimated by the convex polygon method in a 50 ha forest fragment, in southeastern Brazil. The three species presented small territories of similar sizes (&lt; 2 ha) both during the non-reproductive and the...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Dysithamnus mentalis; Thamnophilidae; Pyriglena leucoptera; Territoriality; Thamnophilus caerulescens.
Ano: 2006
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752006000300011

Breeding success of Cacicus haemorrhous (Linnaeus) (Aves: Icteridae) in different environments in an Atlantic Forest reserve in Southeast Brazil
Provedor de dados: 104
Autores: Duca,Charles; Marini,Miguel Ângelo.
Several factors, including the site where the colony was established and number of active nests can influence directly or indirectly the breeding success of colonial birds. The red-rumped cacique, Cacicus haemorrhous (Linnaeus, 1766), is a passerine (Icteridae) that breeds in colonies in different environments. The objective of this study was to evaluate the breeding success of red-rumped cacique in relation to three environments (lake edge, forest and swamp) in which colonies were established in an Atlantic Forest reserve in southeast Brazil. Seven colonies from the three environments were monitored during the breeding season of 2001. Overall probability of nest survival was 40.5%. We found that colonies established in the swamp presented higher nest...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Nest predation; Red-rumped cacique; Reproduction.
Ano: 2008
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752008000200002

Temporal variation in the reproductive success of Cacicus haemorrhous (Linnaeus) (Aves, Icterinae) in an Atlantic Forest reserve in Southeast Brazil
Provedor de dados: 104
Autores: Duca,Charles; Marini,Miguel Â.
For colonial bird species, egg hatching synchrony has been considered an important factor in their reproductive success. The Red-rumped Cacique, Cacicus haemorrhous (Linnaeus, 1766), is a Passeriformes species (Icterinae) that reproduces in colonies in which groups of females lay their eggs at different periods during the reproductive season. The objective of this study was to evaluate if there was a variation in the reproductive success among C. haemorrhous females groups that lay eggs in different periods along the reproductive season. A total of 192 nests from four colonies were monitored at Parque Estadual do Rio Doce, Minas Gerais state, Brazil, and used to calculate the nest survival probability in different periods (early and late) of the 2001...
Tipo: Info:eu-repo/semantics/article
Palavras-chave: Birds; Hatching synchrony.
Ano: 2005
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752005000200026