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| Registros recuperados: 18 | |
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| Oniki,Yoshika; Antunes,Alexsander Z.; Willis,Edwin O.. |
| The hummingbird Amazilia lactea (Lesson, 1832) built a nest in São Paulo, Brazil, in the spring (Oct) and added lichens during incubation. The female incubated over 70 per cent of the day, 1-56 min per visit, and brooded two small young somewhat less; brooding stopped by about 10 days of age, as did night brooding. Lack of night brooding for large young hummingbirds may reflect lack of space in a small nest. Young stayed in the nest 19 days. Feedings were widely spaced, and presence of possible predators caused alarm. |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Amazilia lactea; Nest; Behavior; Brazil. |
| Ano: 2000 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212000000200007 |
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| Zilio,Felipe. |
| ABSTRACT Neotropical hawk-eagles (Spizaetus spp.) are large forest raptors, having low population densities and high sensitivity to human disturbance. The three species of Brazil’s Atlantic forest (S. ornatus, S. melanoleucus, S. tyrannus) are threatened and little is known of many aspects of their biology, such habitat requirements, nesting behavior, and food habitats. Here I present data about the breeding biology, diet and behavior of the Ornate Hawk-Eagle (S. ornatus; OHE) and the Black-and-white Hawk-Eagle (S. melanoleucus; BWHW), and estimations of distribution - extent of occurrence (EOO) - and population sizes for the three hawk-eagles of the southern Atlantic Forest. I compiled data from nine years of field studies done in Rio Grande do Sul and... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Distribution; Diet; Nest; Population estimate; Threatening status. |
| Ano: 2017 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212017000100237 |
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| Camargo,Roberto da Silva; Lopes,Juliane F. S.; Forti,Luiz Carlos. |
| Energetic cost of digging behavior in workers of the leaf-cutting ant Atta sexdens (Fabricius). During nest excavation, leaf-cutting ant workers undergo reduction in their body reserve, particularly carbohydrates. In order to estimate the energetic cost of digging, groups of 30 workers of the leaf-cutting ant Atta sexdens were sealed in a hermetic chamber for 24, 48 and 72 hours, with and without soil for digging, and had the CO2 concentration measured using respirometric chambers as well as volume of soil excavated (g). As expected, the worker groups that carried out soil excavation expelled more carbon dioxide than the groups that did not excavate. Therefore, a worker with body mass of 9.65 ± 1.50 mg dug in average 0.85 ± 0.27 g of soil for 24 hours,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Attini; Carbon dioxide; Insecta; Formicidae; Nest. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000400009 |
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| Camargo,Roberto S.; Lopes,Juliane F. S.; Forti,Luiz C.; Somera,Alexandre F.; Bacci Jr,Mauricio. |
| Energy substrate used by workers of leaf-cutting ants during nest excavation. In this study we aimed to ascertain whether leaf-cutting ant workers lose body reserves (fat or sugars) as a function of nest excavation. For each treatment, we isolated 10 workers of Atta sexdens into two experimental groups, Control (C- without excavation) and Soil (S- with excavation), which were kept for different time intervals (0, 24, 48 or 72 hours), totaling 700 tested workers. We then determined the concentration of soluble carbohydrates and total lipid content in them. The total carbohydrates were determined colorimetrically, based on the reaction between carbohydrates and sulfuric acid-phenol. For determination of lipids, the insects were immersed in organic solvent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Attini; Formicidae; Insecta; Lipids; Nest. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262013000400008 |
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| CAMPOS, Z. M. da S.; COUTINHO, M. E.. |
| Neste estudo foram feitos vários levantamentos utilizando avião tipo ultraleve, entre os meses de julho a setembro de 1993 a 1996. O objetivo foi avaliar o potencial reprodutivo de tuiuiú,em uma região de rios intermitentes, Pantanal da Nhecolândia. Em 1993, o número médio de ovos foi de 3 ovos (DP= 0,90; 2 - 4 ovos). No entanto, em 1994, não foi observado ninhos ativos na área de estudo. Em 1995, o número de ovos variou de 2 a 5 ovos (x= 4; DP=1,1), e o número de jovens no ninho variou de 1 a 5 (x=3; DP=1,4). No entanto, em 1996 não foi observado ninhos ativos na área de estudo, somente ninhos vazios e antigos. O uso da ferramenta ultraleve para estudos locais da biologia reprodutiva de Jabiru mycteria, em áreas abertas foi totalmente viável. |
| Tipo: Boletim de Pesquisa e Desenvolvimento (INFOTECA-E) |
Palavras-chave: Tuiuiú; Levantamento aéreo; Nest; Aerial survey.; Ninho; Reprodução.; Jabiru mycteria; Pantanal; Reproduction.. |
| Ano: 2004 |
URL: http://www.infoteca.cnptia.embrapa.br/infoteca/handle/doc/811106 |
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| Forti,Luiz Carlos; Moreira,Aldenise Alves; Camargo,Roberto da Silva; Caldato,Nadia; Castellani,Maria Aparecida. |
| ABSTRACT Atta bisphaerica is a species of grass-cutting ants commonly found in the Cerrado biome. The Brazilian Cerrado (savanna) biome covers 2 million km representing 23% of the area of the country. It is an ancient biome with rich biodiversity, estimated at 160,000 species of plants, fungi and animals. However, little is known about their nest architecture development. This study investigated the architecture of fourteen A. bisphaerica nests from Botucatu, São Paulo, Brazil. Molds were made of the nests by filling them with cement to allow better visualization of internal structures such as chambers and tunnels. After excavation, the depth and dimensions (length, width, and height) of the chambers were measured. As expected, there was a lateral... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Grass-cutting ants; Nest; Social insects. |
| Ano: 2018 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0085-56262018000100046 |
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| Ramos,Marina; Albuquerque,Patrícia de; Rêgo,Márcia. |
| The nesting behavior of Centris (Hemisiella) vittata Lepeletier was studied in the Urbano Santos Cerrado in the northeast of Maranhão State, Brazil. To date, this species has only been studied in trap-nests. The nesting behavior of this species in a natural condition is recorded for the first time. Nesting occurred in preexisting holes in dead trunks of aroeira, Astronium myracrodruon (Anacardiaceae), at the end of the rainy season. The cells were constructed with a mixture of sand and oil. After finishing the nests, females used only oil to line the entrance wall. Two females collected sand at the same time to build their nests, and another one was seen collecting resources at Byrsonima sp. (Malpighiaceae). The pollen load of one bee was analyzed and was... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Solitary bee; Nest; Preexisting hole; Bionomy. |
| Ano: 2010 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2010000300011 |
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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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| Roll,Victor Fernando Büttow; Levrino,Gustavo Adolfo Maria; Briz,Ricardo Cepero. |
| The influences of floor and cage-rearing on behavioural adaptation to furnished cages were investigated in laying hens. Two groups of 180 Isa Brown commercial layer pullets were reared in cages (CR) or floor pens (FR) and transferred to furnished cages, where their behavioural adaptation was observed throughout the laying period (18-78 wks of age). At 17 weeks of age, hens were placed in one of the 36 furnished cages with 10 birds in each cage, each containing a nest box, perches, a dust bath, and abrasive strips. At 50 and 54 weeks of age, direct visual observation and video recording were used to assess hens behaviour. From 21 weeks of age, the dust-bath activities of leg-banded hens in eight cages per treatment were recorded. The amount of time spent... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Behavior; Dust-bath; Welfare; Nest; Perches. |
| Ano: 2008 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782008000700031 |
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| Maurício,Giovanni N.; Bencke,Glayson Ariel; Repenning,Márcio; Machado,Diogenes Borges; Dias,Rafael A.; Bugoni,Leandro. |
| Information on the breeding biology of birds is essential for improving avian life-history theory and implementing sound management and conservation actions for these organisms. Comprehensive reviews of this kind of information are lacking for most Neotropical regions, including Rio Grande do Sul, the southernmost Brazilian state. Aiming to update the knowledge on the reproductive status of birds in Rio Grande do Sul, we reviewed breeding records of all potential breeding species recorded in the state using a set of predefined, restrictive criteria for accepting breeding evidences as effective. Data satisfying our criteria were available for 165 species in the literature. We also collected novel breeding information obtained in the state for an additional... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Nest; Egg; Nestling; Breeding biology; Breeding records. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212013000200012 |
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| Fadini,Lauana Schneider; Silva,Ary Gomes; Ferreira-Júnior,Paulo Dias. |
| The beaches of Espírito Santo encompass the most important nesting sites of the loggerhead sea turtle, Caretta caretta (Linnaeus, 1758), in the South Atlantic Ocean. Previous research has shown that, unlike other nesting sites in Brazil, Espírito Santo harbors a large percentage of male individuals, which play an important role in maintaining the equilibrium of C. caretta populations in the South Atlantic. During the 2006/2007 reproductive season, four beaches presenting considerable geologic differences were monitored. The sedimentary features of the nesting sites (mineral composition, albedo, and grain size), nesting dates, and clutch sizes were correlated with hatching success and incubation duration. Results show that hatching success is mostly... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Loggerhead sea turtle; Ecology; Nest; Sediment; Hatchling. |
| Ano: 2011 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1984-46702011000300005 |
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| 山口, 由依; 柳川, 久; YAMAGUCHI, Yui; YANAGAWA, Hisashi. |
| 帯広畜産大学構内において2009年４月下旬から８月にかけて，エゾリスSciurus vulgaris orientis の巣と営巣木の選択に関して調査した．計43個のエゾリスの巣が発見され，その内訳は 球状巣14巣，皿状巣26巣およびその他３巣であった．本種は球状巣および皿状巣の営巣木において， 樹高が高く，胸高直径の大きい針葉樹を選択した．営巣木を中心とした半径11.28ｍのプロット 内における，立木密度と胸高断面積の合計は，いずれも球状巣の周辺において皿状巣の周辺より も値が大きかった．エゾリスの営巣木を保全するためには，営巣木だけでなく，その周辺の環境 にも注意する必要があるだろう．We performed an investigation on red squirrels’ nests and selection of nest trees from late April to August 2009 on the campus of Obihiro University of Agriculture and Veterinary Medicine. Forty-three nests were found, of which 14 were dreys, 26 were nests, and 3 were not classifiable. For their dreys and nests, red squirrels chose high conifer trees with large DBH. Within a plot 11.28m in radius around nest trees, the totals of tree density and those of basal... |
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Palavras-chave: エゾリス; 球状巣; 皿状巣; 営巣木選択; 大学キャンパス; Red squirrel; Drey; Nest; Nest tree selection; University campus. |
| Ano: 2010 |
URL: http://ir.obihiro.ac.jp/dspace/handle/10322/2723 |
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| Registros recuperados: 18 | |
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