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| Registros recuperados: 119 | |
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| Reinert,Bianca L; Pinto,Júlio C; Bornschein,Marcos R; Pichorim,Mauro; Marini,Miguel Â. |
| Five hundred and eigh body masses of 74 forest birds, and measurements of wing, tail, tarsus and beak of 14 poorly known species mist-netted at two sites in the Atlantic Forest of eastern Paraná State, southern Brazil, are presented. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Body masses; Measurements; Atlantic Forest. |
| Ano: 1996 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751996000400001 |
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| De Almeida Amélio,Leandro; Marchi Do Carmo,Dimas; Soares De Lima,Jéssica; Fernandes Peralta,Denilson. |
| Birds’ nests are elaborate constructions that are built to provide a safe and secure environment for the eggs and hatchlings of birds to develop. Twigs and leaves represent common nesting materials in birds’ nests globally and with their beaks, they can carry materials, sometimes larger than the birds themselves, to construct their nests. In addition to twigs and leaves, birds also use various other materials less frequently, such as bryophytes, and in this study we examined the prevalence of bryophytes in birds’ nests in Brazil. We analyzed the nest composition of 21 birds’ nests from the Brazilian bryophyte collection at the Institute of Botany (SP Herbarium) and found that bryophytes were a widely used nesting... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Brazil; Bryophytes; Nest composition. |
| Ano: 2017 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1851-23722017000200002 |
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| Pastore,Silvana Marques; Gomes,Paulo Cezar; Rostagno,Horacio Santiago; Albino,Luiz Fernando Teixeira; Calderano,Arele Arlindo; Vellasco,Cássia Rampini; Viana,Gabriel da Silva; Almeida,Rodrigo Lopes de. |
| The experiment was conducted to determine the nutritional requirement of calcium and the best calcium:available phosphorus ratio for commercial layers at the post-laying peak. A total of 324 Hy-Line W-36 laying hens were utilized in the period from 42 to 58 weeks of age, distributed in a completely randomized design in a 3 × 3 factorial arrangement, composed of three levels of calcium (39, 42 and 45 g/kg) and three calcium:phosphorus ratios (12.12:1; 10.53:1; and 9.30:1), totaling nine treatments with six replications and six birds per experimental unit. There was no significant effect from the calcium levels × calcium:phosphorus ratio interaction for any of the variables studied. The calcium levels and the calcium:phosphorus ratios did not affect the... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Mineral; Performance; Requirement. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001200007 |
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| Bülau,Sandra Eloisa; Kretschmer,Rafael; Gunski,Ricardo José; Garnero,Analía del Valle; O’Brien,Patricia C. M.; Ferguson-Smith,Malcolm A.; Oliveira,Edivaldo Herculano Correa de; Freitas,Thales Renato Ochotorena de. |
| Abstract Zonotrichia capensis is widely distributed in the Neotropics. Previous cytogenetic studies demonstrated the presence of polymorphisms in two chromosome pairs (ZCA2 and ZCA4). Here, we report results based on comparative chromosome painting, using probes derived from Gallus gallus and Leucopternis albicollis, focused on characterizing the chromosome organization of Z. capensis. Our results demonstrate the conservation of ancestral syntenies as observed previously in other species of passerine. Syntenies were rearranged by a series of inversions in the second chromosome as described in other Passeriformes, but in this species, by using probes derived from L. albicollis we observed an extra inversion in the second chromosome that had not previously... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Chromosomal rearrangements; Molecular cytogenetics; FISH. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1415-47572018000500799 |
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| ARBELÁEZ-CORTÉS,Enrique; TORRES,María Fernanda; LÓPEZ-ÁLVAREZ,Diana; PALACIO-MEJÍA,Juan Diego; MENDOZA,Ángela María; MEDINA,Claudia Alejandra. |
| Collections of frozen tissue samples stand as keystone sources of molecular information to construct biodiversity knowledge, and are particularly challenged if they focus on megadiverse countries. In 1998 the Humboldt Institute (Instituto de Investigación de Recursos Biológicos Alexander von Humboldt) began a tissue collection of Colombian biodiversity (IAvH-CT) and the aim of this work is to present a diagnostic and an historical perspective for that collection, constructed by compiling information and experiences on its management as well as by organizing and curating the information of each catalogued sample. After 16 years, the IAvH-CT harbors 16,469 samples, which represent around 2530 species from 1289 genera, and 323 families of the Colombian... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Biological collections; Biorepository; Birds; Cryoconservation; Neotropics; Plants. |
| Ano: 2015 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2015000200016 |
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| Valente,Renata de Melo. |
| Fourteen bird species were observed visiting one specimen of Alchornea glandulosa Poepp., 1845, at the Horto Florestal Navarro de Andrade, Rio Claro, São Paulo State, Brazil. Among them, three species seem to be the most efficient seed dispersers of A. glandulosa at the study site: Myiodinastes maculatus (Müller, 1776), Empidonomus varius (Vieillot, 1818) e Tyrannus melancholicus Vieillot, 1819. Besides to swallow fruit whole, these birds contributed with 68.5% of the total feeding visits. A. glandulosa fruit are not the mainly part of the diet of any one of the observed bird species, since they do not fit in the frugivorous specialized category. However, as almost all the observed individuals swallow fruit whole, it is suppose that they promote an... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Frugivory; Alchornea glandulosa; Birds; Behavior; Brazil. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212001000200008 |
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| Chen, W.-M.; Lee , Y.-F.; Tsai, C.-F.; Yao, C.-T.; Chen, Y.-H.; Li, S.-H.; Kuo, Y.-M.. |
| Many birds in breeding seasons engage in vigorous dawn singing that often turns to a prominent chorus. We examined dawn chorus variation of avian assemblages in a tropical montane forest in Taiwan and tested the hypothesis that onset sequence is affected by eye sizes, foraging heights, and diet of birds. Chorus onset and duration varied between sampling months, but generally peaked in the prime breeding season. Overall dawn chorus length increased with, but mean duration per species was negatively correlated with, species richness. The inter-correlation among trait variables in phylogenetic independent contrasts was calculated and examined. Both foraging height and relative eye size were selected as positively explanatory factors, but no dietary effects... |
| Tipo: Article / Letter to the editor |
Palavras-chave: Breeding; Canopy; Diets; Eye size; Foraging; Perch; Taiwan; Tropical forests; Birds; 42.83; 42.62. |
| Ano: 2015 |
URL: http://www.repository.naturalis.nl/record/578950 |
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| Deef,Lamiaa Elsayed Mokhtar. |
| ABSTRACT Quail is an important and interesting group of galliform birds. The Common quail (Coturnix coturnix); the Japanese quail (Coturnix japonica); the Panda quail (Coturnix japonica); the Dotted white quail (Coturnix japonica) and the Bobwhite quail (Colinus virginianus) were used in this study. PCR-RFLP and SDS-proteins were performed to reveal the genetic characterization and genetic relationship of the studied quails. Analysis of fragments generated by digestion of PCR product with restriction enzyme NlaIII recorded highly polymorphic restriction profiles. There is a wide intraspecific COI, SEMA3E and TLX genes variability among the studied quails. Protein bands varied from10 to 18 between quails with minimum number of bands were in the Dotted... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; PCR; Quail; SDS-PAGE; Galliformes. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132017000100425 |
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| KELT,DOUGLAS A.. |
| Four recent studies on Chilean vertebrates underscore the very different effects that habitat fragmentation may have under different conditions. In southern Chile, birds exhibited significant species-area relationships, whereas the more depauperate small mammal community did not. The avifauna of highly isolated rainforest remnants in Fray Jorge National Park (IV Región) presented steeper species-area relations than those in southern Chile, reminiscent of land-bridge islands after faunal relaxation. The small mammal results were unexpected but may reflect the reduced vagility and immigration potential of this group. Additionally, the inter-remnant matrix habitat may support large populations of only some species, allowing them to capitalize on resources... |
| Tipo: Journal article |
Palavras-chave: Habitat fragmentation; Valdivian temperate rainforest; Small mammals; Birds; Conservation. |
| Ano: 2001 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2001000400005 |
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| Calderano,Arele Arlindo; Gomes,Paulo Cezar; Donzele,Juarez Lopes; Barreto,Sergio Luiz de Toledo; Vellasco,Cássia Rampini; Mello,Heloisa Helena de Carvalho; Lelis,Guilherme Rodrigues; Rocha,Tatiana Cristina da. |
| The objective of this study was to determine the ideal digestible tryptophan:digestible lysine ratio in diets for laying hens from 24 to 40 weeks of age. Two hundred and forty Hy-Line W-36 laying hens at 24 weeks of age were distributed in a completely randomized design, with five treatments, eight replicates and six birds per experimental unit. The digestible tryptophan levels in the experimental diets were 1.57; 1.68; 1.79; 1.90 and 2.01 g/kg, providing ratios of digestible tryptophan:digestible lysine of 0.215; 0.230; 0.245; 0.260 and 0.275. The increase in the levels of digestible tryptophan in the diet linearly improved the feed intake, digestible tryptophan intake, digestible lysine intake, egg production, egg mass, feed conversion per egg mass and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amino acid; Birds; Ideal protein. |
| Ano: 2012 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-35982012001000006 |
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| RIBAS,CAMILA C.; ALEIXO,ALEXANDRE. |
| Abstract: Amazonia has been a focus of interest since the early days of biogeography as an intrinsically complex and extremely diverse region. This region comprises an intricate mosaic that includes diverse types of forest formations, flooded environments and open vegetation. Increased knowledge about the distribution of species in Amazonia has led to the recognition of complex biogeographic patterns. The confrontation of these biogeographic patterns with information on the geological and climatic history of the region has generated several hypotheses dedicated to explain the origin of the biological diversity. Genomic information, coupled with knowledge of Earth’s history, especially the evolution of the Amazonian landscape, presents fascinating... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazonia; Biogeography; Birds; Conservation; Diversification; Rivers. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0001-37652019000600611 |
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| Registros recuperados: 119 | |
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