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| Registros recuperados: 119 | |
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| Deef, Lamiaa Elsayed Mokhtar. |
| This is the first study to detection the genetic relationship between Porphyrio alleni and four Rallidae species: Fulica atra, Gallinulla angulata, Gallinulla chloropus and Porphyrio porphyrio. Mitochondrial cytochrome oxidase subunit I (COI) sequences were used as an effective marker in this study. DNA of Rallidae species were extracted, amplified using polymerase chain reaction (PCR) and then sequenced. The results obtained from information based on COI sequences revealed that Gallinulla angulata and Gallinulla chloropus fall into two separate clades and they are not monophyletic. This suggests that, two moorhens could not be laid into the same genus. In addition, Porphyrio porphyrio was included in the same genus with Porphyrio alleni but they were... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Gruiformes; PCR; Phylogeny; Sequencing; Species.. |
| Ano: 2018 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/37184 |
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| Leclerc, Camille; Villéger, Sébastien; Marino, Clara; Bellard, Céline; Di Minin, Enrico. |
| Aim The assessment of biodiversity patterns under global changes is currently biased towards taxonomic diversity, thus overlooking the ecological and functional aspects of species. Here, we characterized both taxonomic and functional diversity of insular biodiversity threatened by multiple threats. Location Worldwide islands (n = 4,348). Methods We analysed the relative importance of eleven major threats, including biological invasions or climate change, on 2,756 insular endemic mammals and birds. Species were functionally described using five ecological traits related to diet, habitat and body mass. We computed complementary taxonomic and functional diversity indices (richness, specialization, originality and vulnerability) of species pools affected by... |
| Tipo: Text |
Palavras-chave: Birds; Functional originality; Functional richness; Functional specialization; Islands; Mammals; Species traits; Vulnerability. |
| Ano: 2020 |
URL: https://archimer.ifremer.fr/doc/00607/71949/70648.pdf |
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| WOLF,BLAIR. |
| Avian adjustments to desert environments are characterized by an integration of behavior and physiology. These responses serve to maintain homeostasis and conserve vital resources such as water. The small size of birds confers a close coupling to the thermal environment and demands rapid adjustments to environmental challenges. Physiological responses to heat stress include hyperthermia, and increased evaporative cooling as environmental temperatures approach body temperature. Behaviorally, desert birds respond to heat stress by drastically reducing activity during the hottest parts of the day and selecting cool shaded microsites. This characteristic behavioral response presents a potential problem in the face of global warming. If birds totally forgo... |
| Tipo: Journal article |
Palavras-chave: Global warming; Hot deserts; Birds; Water balance; Evaporative water loss; Avian distribution. |
| Ano: 2000 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2000000300003 |
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| Graciolli,Gustavo; Carvalho,Claudio José Barros de. |
| A survey of the louse flies species (Diptera, Hippoboscidae) in the State of Paraná, Brazil was carried out. Keys to eight genera and 15 species found are given. The following species are recorded for the first time in Paraná: Lipoptena (Lipoptenella) guimaraesi Bequaert, 1957; Stipolmetopoda legtersi Bequaert, 1955; Icosta (Ornithopomus) latifacies Bequaert, 1955; Icosta (Ornithpomus) rufiventris (Bigot, 1885); Icosta (Ardmoeca) albipennis (Say, 1823) and Olfersia bisulcata Macquart, 1847. Baryphthengus ruficapillus (Vieillot, 1818) (Momotidae) and Ciccaba virgata Carbin, 1849 (Strigidae) are new host records for Ornithoica vicina (Walker, 1849) and I. (Ardmoeca) albipennis; Chiroxiphia caudata (Shaw, 1793) and Schiffornis virescens (Lafresnaye, 1838)... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Artiodactyla; Birds; Host-parasite relationship; Louse flies; Taxonomy. |
| Ano: 2003 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81752003000400019 |
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| Garcia,RG; Mendes,AA; Almeida Paz,ICL; Komiyama,CM; Caldara,FR; Nääs,IA; Mariano,WS. |
| This study aimed at evaluating total or partial replacement of corn by sorghum in broiler diets and at estimating the effect of the pigment supplementation on broiler performance, carcass and cuts yield, and possible breast and leg pigmentation. We used 1680 one-d-old Ross® 308 broilers. Birds were sexed and distributed according to a completely randomized design (2 x 3 + 1). Treatments consisted of a control diet based on corn and diets with two levels corn replacement by sorghum (50 and 100%) and three pigments levels, with four replicates of 60 birds per treatment. There was no effect (p > 0.05) of the dietary replacement of corn by sorghum on performance, carcass and parts yield, and no changes in breast and leg meat pH (p >0.05). Meat... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Meat quality; Pigments; Replacement of corn. |
| Ano: 2013 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-635X2013000300013 |
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| Freitas, Cleber Rondinelli Gomes de; UFRPE; Ludke, Maria do Carmo Mohaupt Marques; UFRPE; Ludke, Jorge Vitor; UFRPE; Rabello, Carlos Bôa-Viagem; UFRPE; Nascimento, Guilherme Rodrigues do; UFRPE; Barbosa, Emanuela Nataly Ribeiro; UFRPE. |
| O trabalho objetivou avaliar o desempenho, a viabilidade econômica e as características de carcaça de frangos de corte alimentados com dietas contendo níveis de inclusão (0,0; 7,5; 15,0; 22,5 e 30,0%) de farinha de varredura de mandioca (FVM). Foram utilizados 360 pintainhos de um dia, distribuídos em um delineamento em blocos casualizados com cinco tratamentos e seis repetições contendo 12 aves por parcela. Os parâmetros avaliados foram o consumo de ração, ganho de peso, conversão alimentar, custo da alimentação, renda bruta, margem bruta e rentabilidade. Aos 42 dias, foram abatidos dois frangos por parcela para avaliação do peso: da carcaça, dos cortes, das vísceras e da gordura total, para determinar o rendimento de carcaça e calcular as porcentagens de... |
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Palavras-chave: 5.04.03.00-1 Nutrição e Alimentação Animal alimento alternativo; Avaliação econômica; Aves; Carcaça; Desempenho. alternative feedstuff; Economic evaluation; Birds; Carcass; Performance. |
| Ano: 2008 |
URL: http://periodicos.uem.br/ojs/index.php/ActaSciAnimSci/article/view/4680 |
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| Lomascolok,Silvia Beatriz. |
| The ability of a plant's propagule to reach microhabitats with the adequate conditions for seed germination and sapling establishment will have a direct effect on the plant's fitness. In the case of fleshy-fruited plants, the seeds are dispersed by frugivorous animals. One part of the seed dispersal process is the removal of the fruits, which contain the seeds, from the parental plant. Another important part of the dispersal process is where the seeds land, especially for species with specific light, temperature or humidity needs for germination, such as disturbance colonizers. Solanum riparium (Solanaceae) is a shade intolerant species found in forest gaps within a subtropical montane forest and along river and road edges in North-western Argentina. In... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Yungas forest; Tabaquillo; Frugivory; Birds; Bats. |
| Ano: 2016 |
URL: http://www.scielo.org.ar/scielo.php?script=sci_arttext&pid=S1667-782X2016000100006 |
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| Bonel,Josiane; Alberti,Taina dos Santos; Stumm,Geovana Kramer Fiala; Gamba,Conrado de Oliveira; Bandarra,Paulo; Cassali,Geovanni Dantas. |
| ABSTRACT: Cockatiels (Nymphicus hollandicus) are exotic birds thatoriginated from Australia.Because of their beauty and learning ability, they are one of the most popular pet birds among the Psittaciformes. The objective of this study was to report a case of leiomyosarcoma on the humeral musculature of the left wing of a cockatiel (Nymphicus hollandicus). The animal was admitted to the Wildlife Rehabilitation Center (NURFS-CETAS) of the Universidade Federal de Pelotas withswelling in the humeral region of the left wing. During surgery, the animal died and was transferred to the Laboratório Regional de Diagnóstico, Faculdade de Veterinária (LRD-UFPel). During histopathological evaluation (hematoxylin and eosin routine technique) of the tumor, spindle... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Psittaciformes; Sarcomas; Alpha actin; Birds; Vimentin. |
| Ano: 2019 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0103-84782019000300550 |
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| González-Acuña,Daniel; Vergara,Francisco; Moreno,Lucila; Barrientos,Carlos; Ardiles,Karen; Cicchino,Armando. |
| A total of 185 birds (nine captured alive and 176 preserved in a museum), belonging to the families Furnariidae (n=14), Tyrannidae (n=4), Turdidae (n=24) and Icteridae (n=143) (Aves: Passeriformes) were searched for lice (Phthiraptera: Philopteridae, Menoponidae). The species collected and identified were: Furnaricola titicacae Carriker 1949 from Phleocryptes melanops (Vieillot 1817), and Picicola cuniculariae Cicchino 1981 from Geositta rufipennis fasciata (Burmeister 1860) (Furnariidae); Picicola foedus (Kellogg & Chapman 1899) from Xolmis pyrope (Kittlitz 1830) (Tyrannidae); Brueelia magellanica Cicchino 1986, B. persimilis Cicchino 1987 and Menacanthus eurysternus (Burmeister 1838) from Turdus falcklandii Quoy & Gaimard 1824 (Turdidae);... |
| Tipo: Journal article |
Palavras-chave: Lice; Phthiraptera; Birds; Passeriformes; Chile. |
| Ano: 2006 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0717-65382006000200008 |
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| GUTIÉRREZ,JULIO R; MESERVE,PETER L; KELT,DOUGLAS A; ENGILIS JR,ANDREW; PREVITALI,M. ANDREA; MILSTEAD,W. BRYAN; JAKSIC,FABIAN M. |
| Since 1989, we have conducted a large-scale ecological experiment in semiarid thorn scrub of a national park in north-central Chile. Initially, we focused on the role of biotic interactions including predation, interspecific competition, and herbivory in small mammal and plant components of the community. We utilized a reductionist approach with replicated 0.56 ha fenced grids that selectively excluded vertebrate predators and/or larger small mammal herbivores such as the degu, Octodon degus. Although we detected small transitory effects of predator exclusions on degu survival and numbers, other species failed to show responses. Similarly, interspecific competition (i.e., degus with other small mammals) had no detectable numerical effects (although some... |
| Tipo: Journal article |
Palavras-chave: Birds; Chilean desert; Ephemeral plants; LTER; Small mammals. |
| Ano: 2010 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0716-078X2010000100005 |
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| SEDANO-CRUZ,Raúl; OSORIO,Daniel. |
| ABSTRACT Melanism in plumage color is often associated to the single nucleotide polymorphism of the melanocortin-1-receptor. Despite the striking association between the substitution of a Glutamic-acid by for a Lysine at position 92 on the MC1R protein and a completely black plumage, an in-depth understanding of the effect of missense mutations on the conformational change and behavior of the MC1R in the lipid bilayer caused by the absence of a crystal structure is lacking. We examine the structural basis for receptor activation using DNA sequences from the GenBank to perform in silico protein homology-based modeling. Our tridimensional model shows that the Alanine for a 179-Threonine substitution is a structural complement of the charge-reversing effect... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Birds; Eumelanin; E92K; Protein evolution; 3D-folding. |
| Ano: 2021 |
URL: http://www.scielo.org.co/scielo.php?script=sci_arttext&pid=S0120-548X2021000100030 |
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| Ribeiro,Maria das Graças; Teles,Maria Eloiza de Oliveira; Maruch,Sandra Maria das Graças. |
| The study of the female genital system of Columba livia (Gmelin, 1789) is part of the research on the reproductive biology of Brazilian birds. This work describes the morphological aspects of the ovary of Columba livia, as well as the histological differences observed in the ovarian follicles during the ovocyte maturation process. Ten Columba livia females were studied, whose ovaries had been dissected, fixed in Bouin and Helly solutions, and histologically processed for staining (Hematoxylin-Eosin; Gomori's trichromic and Weigert's technique and Gomori's technique for connective tissue fibers). The ovary has an irregular surface, is located in the abdominal cavity, and relates to the cranial portion of the left kidney and caudal extremity of the left... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Columbidae; Birds; Genital apparatus; Ovary. |
| Ano: 1995 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0101-81751995000100016 |
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| Registros recuperados: 119 | |
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