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| Registros recuperados: 119 | |
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| Haas-Costa,Jucelaine; Alves,Luis Francisco Angeli; Daros,Alaxsandra Aparecida. |
| Beauveria bassiana, an important insect pathogen was used to evaluate its effect on the feeding, behavior, histology of the digestory system and anatomy of Gallus domesticus. The fungus (strain Unioeste 4) was administrated orally treated with chicken food. Chicken feces were collected, and the birds observed for 28 days. Also, were evaluated the weight of the birds, as well as any sign of intoxication or pathological modification. Tissue samples were withdrawn to test lesions with the optic microscope. There was 100% of survival of the birds, and no behavior alteration or external lesion was found. The test group presented the highest weight gain (1383.9±54.4g). Viable conidia were observed in the feces until 24 h after feeding the fungus, indicating that... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological control; Microbial control; Non-target organisms; Birds. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132010000200027 |
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| Sutherland, Glenn D; University of British Columbia; gsland@interchg.ubc.ca; Harestad, Alton S; Simon Fraser University; harestad@sfu.ca; Price, Karen; Simon Fraser University; kprice@futurenet.ca; Lertzman, Ken; Simon Fraser University; lertzman@sfu.ca. |
| Natal dispersal is a process that is critical in the spatial dynamics of populations, including population spread, recolonization, and gene flow. It is a central focus of conservation issues for many vertebrate species. Using data for 77 bird and 68 mammal species, we tested whether median and maximum natal dispersal distances were correlated with body mass, diet type, social system, taxonomic family, and migratory status. Body mass and diet type were found to predict both median and maximum natal dispersal distances in mammals: large species dispersed farther than small ones, and carnivorous species dispersed farther than herbivores and omnivores. Similar relationships occurred for carnivorous bird species, but not for herbivorous or omnivorous ones.... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Allometric scaling; Birds; Body mass; Comparative analysis; Connectedness; Diet type; Habitat alterations; Life history; Mammals; Movements; Natal dispersal distances; Probability density function. |
| Ano: 2000 |
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| Rocha,PMC; Barros,MEG; Rocha,BP; Souza,FAL; Mendonça,FS; Evêncio-Neto,J. |
| ABSTRACT This paper describes the epidemiological, clinical and pathological aspects of an avian encephalomyelitis (AE) outbreak in commercial laying hens in Northeastern Brazil. The disease affected 23,409 layers (from day one until 100 weeks) leading to mortality of 16.5% (5,049/30,600) of the flock. Twenty laying hens were clinically examined, and blood samples were collected and tested by Enzyme-Linked Immunosorbent Assay (ELISA). Five laying hens with neurological signs were necropsied and samples of the brain, cerebellum, spinal cord, sciatic nerve, heart, ceca tonsils, proventriculus and liver were collected, fixed in formalin buffered solution and processed according to routine methods for histological examination. Clinical signs were observed in... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Avian encephalomyelitis; Birds; Laying hens; Nonsuppurative encephalomyelitis; Vaccination. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2019000200305 |
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| Diniz,Pedro. |
| Sexual dimorphism in birds is often attributed to sexual selection, but another interpretation suggests the evolution of this phenomenon by natural selection. Predation may be an important selective pressure, acting mainly on females. In this study, I tested the latter hypothesis on the coal-crested finch (Charitospiza eucosma Oberholser, 1905) in a neotropical savanna of the Central Brazil (Cerrado). I used capture methods for ascertaining the sex ratio in the population, and focal observations to gather behavioral data. My results show that the sex ratio is skewed toward males (1:1.39). Males were more vigilant, vocalized for longer periods of time, and used higher perches than females. Females foraged more, spent more time on parental care and remained... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Foraging behavior; Predation risk; Sex ratio; Sexual dimorphism. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000200003 |
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| Anjos,Luiz dos. |
| Bird communities were studied in two types of fragmented habitat of Atlantic forest in the State of Paraná, southern Brazil; one consisted of forest fragments that were created as a result of human activities (forest remnants), the other consisted of a set of naturally occurring forest fragments (forest patches). Using quantitative data obtained by the point counts method in 3 forest patches and 3 forest remnants during one year, species richness and relative abundance were compared in those habitats, considering species groups according to their general feeding habits. Insectivores, omnivores, and frugivores presented similar general tendencies in both habitats (decrease of species number with decreasing size and increasing isolation of forest fragment).... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Bioacoustics; Brazilian Atlantic forest; Conservation; Forest fragmentation. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652004000200036 |
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| Meire, P.. |
| Habitat verlies en degradatie is één van de belangrijke ecologische problemen van deze eeuw. Hoewel alle ecosystemen hieronder te lijden hebben, blijken wetlands of waterrijke gebieden, op wereldschaal vrij zeldzame gebieden, onder zeer zware antropogene druk te staan. Het is daarom ook niet te verwonderen dat deze ecosystemen sinds meerdere jaren een belangrijke prioriteit vormen voor het natuurbehoud. Binnen de wetlands vormen estuaria zeer produktieve systemen waarvan het rijke voedselaanbod wordt benut door grote aantallen steltlopers, die buiten het broedseizoen bijna volledig op dergelijke getijdengebieden zijn aangewezen. Het belang van het Deltagebied (NI.) en met name de getijdengebieden van Ooster- en Westerschelde voor watervogels worden kort... |
| Tipo: Info:eu-repo/semantics/doctoralThesis |
Palavras-chave: Benthos; Birds; Estuaries; River; Water. |
| Ano: 1993 |
URL: http://www.vliz.be/imisdocs/publications/5961.pdf |
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| Simões,Karina; Orsi,Antônio Marcos; Artoni,Silvana Martinez Baraldi; Cruz,Claudinei da; Schimming,Bruno César; Pinheiro,Patrícia Fernanda Felipe. |
| The epididymal region of the domestic duck is composed by efferent ductules, whose histotopology was characterized by the proximal and distal ductules and sequentially by the epididymal duct. The epithelial lining of the efferent ductules was ciliated pseudostratified and formed by columnar cells. Also the ducts epididymidis epithelium was pseudostratified but non-ciliated. Concerning the histomorphometric analysis, the epithelial height mean was significantly greater in the distal efferent ductules, differing from the lower epithelium height mean observed in proximal efferent ductules and epididymal duct. The maximum and minimum diameter mean were significantly greater in the proximal efferent ductules, comparatively to the same diameter means of the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Epididymal region; Birds; Morphology; Morphometric analysis. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1413-95962004000200003 |
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| Dickinson, E.C.; Walters, M.P.. |
| McClelland brought back specimens and drawings from a survey in 1835-36 (and perhaps 1836-37). New birds were described in a paper read by Horsfield (1840). A comparison of the McClelland drawings of birds, held at the British Library, with the type specimens of birds newly named in 1840 and with other material has shown that McClelland’s collection was not fully reported. McClelland actually recorded about 170 species not just 96 as then listed. Some birds listed in 1840 were misidentified, of these some have been corrected earlier but at least one is here newly considered and looks as if it needs further correction. Taxonomic and nomenclatural notes are included when necessary. The correct name to apply to the one species in the genus Melanochlora, the... |
| Tipo: Article / Letter to the editor |
Palavras-chave: McClelland; Horsfield; Drawings; Birds; Assam; History; British Library; Melanochlora; Neotype; Tesia olivea; 42.83. |
| Ano: 2003 |
URL: http://www.repository.naturalis.nl/record/220222 |
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| 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 |
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| KARASOV,WILLIAM H.; MEYER,MICHAEL W.. |
| Environmental contaminants are ubiquitous and so are often key suspects in cases of lagging wildlife populations. How do we test hypotheses about cause-effect linkages between contaminants and wildlife health? We present three case studies in which different approaches were used to test hypotheses about effects of contaminants on wildlife. The cases involve the possible impacts of (1) polychlorinated biphenyl on Lake Superior bald eagles (Haliaeetus leucocephalus); (2) dioxin on osprey (Pandion halieatus); and (3) methyl mercury on common loons (Gavia immer). The different approaches were dictated by legal, logistic, and financial limitations, but the relative strengths of experimental and mechanistic approaches over correlative approaches is underscored.... |
| Tipo: Journal article |
Palavras-chave: Applied physiological ecology; Ecotoxicology; Birds; Chemical contaminants. |
| Ano: 2000 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000300009 |
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| Mees, G.F.. |
| The avifauna of the island of Flores (Lesser Sunda Islands) is reviewed. Introductory sections, which include a chapter on the history of ornithological discovery, are followed by the main part, a systematic account in which each species and subspecies known from Flores is treated separately. A discussion of the zoogeography, a gazetteer, a list of references and an index complete the volume. At present 214 forms (210 species) are accepted as having been reliably recorded. Of these, ca. 160 are, or may be assumed to be, residents, and of ca. 100 the eggs have been collected and are described. The balance consists of visiting sea and freshwater birds, migrants from the North and migrants from the South. It is likely that few additions remain to be made to... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Indonesia; Flores; Avifauna; Birds; Zoogeography; 42.83. |
| Ano: 2006 |
URL: http://www.repository.naturalis.nl/record/209697 |
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| Goijman,Andrea P.; Zaccagnini,María Elena. |
| Birds play several roles in agricultural lands and respond to habitat heterogeneity within the agricultural landscape. Agricultural intensification in Argentina has increased the sown area, mainly with soybean, fragmenting landscapes in the pampas and mesopotamic region. In Entre Ríos Province, the original Espinal forest has been fragmented, leaving remnant patches of natural vegetation, in cases modified by cattle grazing. These changes represent a potential threat for avian conservation. In Entre Ríos, terraces may be a useful habitat in maintaining avian diversity, similar to other non-cropped linear habitats in agricultural landscapes. We tested the hypothesis that habitat heterogeneity created by terraces would maintain higher species richness and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Agricultural landscape; Birds; Forest; Soybean; Terraces. |
| Ano: 2008 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S0073-34072008000200002 |
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| Carvalho,T.S.G.; Saad,C.E.P.; Alvarenga,R.R.; Ferreira,W.M.; Assis,V.D.L.; Pereira,V.M.; Scalon,J.D.; Silva,J.P.; Zangeronimo,M.G.. |
| ABSTRACT The objective of this study was to evaluate the influence of collard green stalks as environmental enrichment on the behavior of cockatiels (Nymphicus hollandicus) maintained in captivity. Sixteen birds were housed individually in cages and fed a commercial diet for parrots and seed mix, with water ad libitum during 12 days in climatic chamber with temperature and relative humidity simulating tropical conditions. The animals (n = 8) were divided into two groups, control and enriched, and the experimental period was divided into two phases (during and after enrichment) of four days each. The collard green stalks were used as enrichment only during the first period of the experiment, daily changed and maintained only during the day. The stalks... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Animal welfare; Captive animals; Food enrichment; Psittacine. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352017000300718 |
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| Pomar,Candido; Kipper,Marcos; Marcoux,Marcel. |
| ABSTRACT Precise body composition measurements are essential in animal nutrition studies because the impact of treatments is evaluated based on changes in body weight and composition. Various indirect techniques for animal compositional evaluation have been developed and evaluated for applicability in animal nutrition studies. A fast, accurate, minimally invasive method that requires little input is considered the ideal for providing information about the animal. Measurements obtained by dual-energy x-ray absorptiometry (DXA) are highly correlated with those obtained by chemical analysis and dissection. The algorithms of DXA software partition the six chemical components of the body (lipids, water, proteins, carbohydrates, non-bone mineral, and bone... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Alternative method; Birds; Body composition; DXA; Pig. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982017000700621 |
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| Registros recuperados: 119 | |
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