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| Registros recuperados: 119 | |
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| Maruch,Sandra Maria das Graças; Teles,Maria Eloiza de Oliveira; Ribeiro,Maria das Graças. |
| Known as "domestic dove", the Columba livia (Gmelin, 1789) is a columbidae species widely distributed in Brazil, whose reproductive biology has been studied by many researchers. The testes of 12 Columba livia males were collected and prepared for histologic examination under an optical microscope, the results of which were analysed and photographed. The tunica albuginea that covers the testes consists of a thick, not very cellular layer of dense connective tissue. Groups of interstitial cells with typical morphological appearance and surrounded by loose, well vascularized connective tissue are observable within the organ, between the seminiferous tubules. The seminiferous tubules are thick, intensely wound and, when seen in cross section, show Sertoli... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Columbidae; Birds; Genital apparatus; Testis. |
| Ano: 1995 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000100015 |
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| The southern Iberian Peninsula is dominated by a savannah-like ecosystem, the montado, which is a typically Mediterranean cultural adaptation to generally poor productive areas. Montados are exploited for three main uses: forestry, agriculture, and extensive grazing, in proportions that vary according to local conditions (more or less productive land) and historical circumstances. Because these ecosystems occur over a large geographic area (they occupy some 6 million ha), biodiversity would be expected to vary among montados. However, differences in management practices may also influence species distribution. In this paper, we investigate differences in plant and bird species diversity among 60 montados distributed all across southern Portugal. The... |
| Tipo: Peer-Reviewed Reports |
Palavras-chave: Biodiversity; Birds; Conservation; Ecological concordance; Human versus nature; Montados; Plants. |
| Ano: 2003 |
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| Vicente,J. Júlio; Pinto,R. Magalhães; Noronha,Dely; Carvalho,Patrícia Goulart de. |
| This report deals with the identification of one hundred and seventy-one samples of nematodes recovered from Brazilian birds collected by Lauro Travassos and his staff, between 1921-1960. Aprocta travassossi Caballero, 1938, Aprocta sp., Baruscapillaria appendiculata (Freitas, 1933) Moravec, 1982, Contracaecum plagiaticium Lent & Freitas, 1948, C. spiculigerum (Rudolphi, 1809) Railliet & Henry, 1912, Contracaecum sp., Cyrnea (C.) semilunaris (Molin, 1860) Seurat, 1914, Oxyspirura sp., Paronchocerca ibanezi (Freitas, Vicente & Pinto, 1970) Anderson &. Bain, 1976, Porrocaecum sp., Procyrnea sp., Skrjabinura spiralis Gnédina, 1933, Subulura acutissima Molin, 1860, S. bentocruzi Barreto, 1919, S. travassossi Barreto, 1919, Subulura... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nematodes; Pelecaniformes; Trogoniformes; Birds; Brazil. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000400011 |
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| GUILHERME,Edson; SOUZA,Izabele Rodrigues de. |
| ABSTRACT This study reports a successful reproductive event in Megascops choliba in eastern Acre, northern Brazil. An active M. choliba nest was monitored from the hatching of the eggs to the departure of the nestlings. Once hatched, the nestlings were weighed every two days to verify their weight gain over time. The nestlings remained in the nest for 30 days. The pattern of weight gain was similar to that found in other birds, presenting a rapid increase over the first 15 days, followed by a drastic reduction in the mean growth rate during the second half of the development period. Our observations indicate that the breeding season of M. choliba in southwestern Amazonia is similar as that reported for the species in the northern hemisphere. These are the... |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Birds; Strigidae; Growth rate; Nest; State of Acre; Brazil. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0044-59672017000300269 |
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| Gressler,Lucas Trevisan; Pereira,Larissa Quinto; Brustolin,Joice Magali; Lovato,Maristela; Monteiro,Sílvia Gonzalez. |
| ABSTRACT: Ticks are arthropods that are highly competent in transmitting pathogens to animals and humans. Among these, the genus Amblyomma is the most representative within the Neotropics. Amblyomma longirostre ticks are naturally distributed in countries of South, Central and North America. Their immature stages preferentially parasitize birds (Passeriformes), while adult stages are usually found on rodents. Therefore, reports of this tick species on wild hosts is epidemiologically relevant, especially because of these ticks' potential for transmitting pathogens to other wild and domestic animals, and also to humans. Thus, the aim of this study was to report infestation by Amblyomma longirostre on Cyanocompsa brissonii in southern Brazil. |
| Tipo: Info:eu-repo/semantics/report |
Palavras-chave: Ticks; Ixodidae; Parasitism; Birds. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782016000400660 |
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| Rocha,Tatiane Martins; Andrade,Maria Auxiliadora; Souza,Eliete Silva e; Stringhini,José Henrique; Café,Marcos Barcellos; Rezende,Cíntia Silva Minafra e; Pôrto,Regiani Nascimento Gagno. |
| An experiment with 630 one-day-old chicks experimentally inoculated with Salmonella Typhimurium was performed to evaluate the effects of an organic acid blend (benzoic, fumaric and 2-hydroxi-4-methylltio-butanoic - HMTBa) on intestinal health and performance. The experimental challenge with Salmonella Typhimurium occurred in two different routes of administration: via crop on the first day after hatching, and via feed, offered from seven to 14 days of age. These groups were treated with organic acids in a 3 × 2 (agent versus acid) factorial arrangement. Chicks treated with organic acids had higher weight gain, mean live weight and better feed conversion at 14 days of age, and higher weight gain at 28 days of age. Chicks treated with organic acids... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Contamination; Control feed; Conversion; Salmonellosis. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982011001200023 |
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| Bueno,F.R.; Silva,C.A.; Oba,A.; Almeida,M.; Medeiros,L.G.; Pitarello,A.S.; Shinyashike,A.T.. |
| ABSTRACT A total of 640 one-day-old Cobb broiler chicks, half male and half female, were reared up to 49 days of age. A completely randomized 2 × 4 factorial design was used. Experimental treatments consisted of four levels of organic zinc supplementation and one control (inorganic zinc supplementation) and two levels of sex (female and male), with four replicates of 16 birds per experimental plot. Animal performance, carcass and cut yields, and meat quality were evaluated. Feed intake increased with zinc supplementation. Broilers that received the lowest level of organic zinc showed better feed conversion than those fed an equivalent level of inorganic zinc. Increased levels of organic zinc reduced the abdominal fat content in females but impaired the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Color; Lipid oxidation; Oligoelement; Organic minerals; Meat pH. |
| Ano: 2020 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0102-09352020000100224 |
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| Kretschmer,Rafael; de Oliveira,Thays Duarte; de Oliveira Furo,Ivanete; Oliveira Silva,Fabio Augusto; Gunski,Ricardo José; del Valle Garnero,Analía; de Bello Cioffi,Marcelo; de Oliveira,Edivaldo Herculano Corrêa; de Freitas,Thales Renato Ochotorena. |
| Abstract An extensive karyotype variation is found among species belonging to the Columbidae family of birds (Columbiformes), both in diploid number and chromosomal morphology. Although clusters of repetitive DNA sequences play an important role in chromosomal instability, and therefore in chromosomal rearrangements, little is known about their distribution and amount in avian genomes. The aim of this study was to analyze the distribution of 11 distinct microsatellite sequences, as well as clusters of 18S rDNA, in nine different Columbidae species, correlating their distribution with the occurrence of chromosomal rearrangements. We found 2n values ranging from 76 to 86 and nine out of 11 microsatellite sequences showed distinct hybridization signals among... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; FISH; Microsatellites; Sex chromosomes; Chromosomal rearrangements. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000100098 |
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| Perrella,Daniel F.; Davanço,Paulo V.; Oliveira,Leonardo S.; Sousa,Livia M.S.; Francisco,Mercival R.. |
| ABSTRACT Despite the fact that E. chlorotica (Linnaeus, 1766) is common and widely distributed in South America, the reproductive aspects of the species are poorly documented. Here we present data on 18 active nests found from August to February, between 2007 and 2012. Nests were globular with a lateral entrance, and measured 97.9 ± 14.4 mm in outside height, 110.6 ± 11.6 mm in outside diameter, and were 4.88 ± 2.09 m above ground. They were often supported from bellow and were composed mainly of tiny dry leafs and leaflets, fine petioles, and plumed seeds, all compacted with spider web silk. Eggs were laid on consecutive days or with one day interval, and clutch size varied from 1-3 eggs (2.1 ± 0.6, n = 9 nests). Only females incubated the eggs, but both... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Breeding biology; Nesting behavior; Euphoniinae; Wasps. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702017000100321 |
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| Zima,Paulo V.Q.; Francisco,Mercival R.. |
| ABSTRACT Several behavioral aspects of the Red-crested Finch Coryphospingus cucullatus (Statius Müller, 1776) are poorly studied. Here we provide reproductive information on 16 active nests. This information may be valuable to elucidate the phylogenetic relationships of this bird, and to design plans to manage it. Nesting activities occurred from October to February. Clutches consisted of two to three eggs (2.06 ± 0.25), which were laid on consecutive days. Incubation usually started the morning the females laid their last egg and lasted 11.27 ± 0.47 days. Hatching was synchronous, or happened at a one-day interval. The nestling stage lasted 12 ± 0.89 days. Only females incubated the eggs and they fed the young more often than the males did. Overall... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Breeding biology; Nesting; Tachyphoninae. |
| Ano: 2016 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702016000400300 |
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| Góis,Rayr Cezar de Souza; Silva,Leandro Alves da; Araújo Júnior,Hélio Noberto de; Silva,Jardel Bezerra da; Cavalcante,Tânia Vasconcelos; Olinda,Robério Gomes de; Viana,Geysa Almeida; Araujo,Marcelle Santana de; Moura,Gabriela Hémylin Ferreira; Silva,Iago Antônio Ananias da; Freitas,Carlos Iberê Alves; Batista,Jael Soares. |
| ABSTRACT: Considering that neem (Azadirachta indica A. Juss.) causes deleterious effects on fertility, the objective was to evaluate the effect of feeding quail (Coturnix coturnix japonica Linnaeus, 1758) of 90 days old with neem seeds on seminal quality, biometric parameters, and testicular morphometrics, as an experimental model. After the 30 day adaptation period to the experimental conditions, birds were randomly distributed in five treatments of neem seeds incorporated into feed, with 10 replicates: T1 (0%), T2 (5%), T3 (10%), T4 (20%) and T5 (40%). After 60 days of receiving experimental rations, their semen was collected to evaluate the sperm quality, the birds were euthanized, and testes were submitted to biometric, histological, and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Azadirachta indica; Experimental poisoning; Birds; Testicular changes; Sperm quality. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019001100703 |
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| TOLEDO-LIMA,GUILHERME S.; MACARIO,PHOEVE; LYRA-NEVES,RACHEL M. DE; TEIXEIRA,BRUNO P.; LIMA,LUIZ A.F. DE; SUGLIANO,GABRIEL O.S.; TELINO-JÚNIOR,WALLACE R.. |
| In northeastern Brazil, the reduction of the natural forest cover to a series of small, isolated fragments has had negative consequences for the local avian fauna, in particular, a loss of the more specialized species, while the populations of some generalists have tended to increase. The present study focuses on the composition and trophic groups of a bird community on a farm in the northeastern Brazilian state of Alagoas. Monthly surveys were conducted between November 2008 and October 2009, based on mist-netting and systematic observations. Overall, 112 species were recorded, of which 76 were associated with the two forest fragments surveyed, while all the others were observed exclusively in the surrounding matrix of pasture and orchards. The bird... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Atlantic Forest; Birds; Northeastern Brazil; Trophic groups. |
| Ano: 2014 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652014000301207 |
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| Anjos,Luiz dos; Graf,Vinalto. |
| Two hundred and eighty eight bird species were registered in Santa Rita Farm, east of Paraná State in Brazil (28º18'S,49º48'W), from February 1990 to January 1991. Eighty four species were registered in all 12 months and eighty three were registered once during this period. October was the richest in number of species (220) and July was the poorest (137). The natural landscape of the Santa Rita farm is composed of open field with several patches of araucaria forest (from 10 to 40 ha) and some small areas of marshland. Two hundred and eight species occurred only in one of these habitats: 163 in the forest, 35 in the open field and 10 in the marshland. The others often occurred in both forest and open field; there is a gradient of occurrence between them.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Richness; Distribution; Paraná; Brazil. |
| Ano: 1993 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751993000400013 |
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| Registros recuperados: 119 | |
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