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Showing 1 to 20 of 201 for “"Aves"”.
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Donde mueren las aves
… de respuestas en la mitología yagán de estas aves. Tras un sueño, descubre que la domesticación no fue más que una jaula opresiva para el ave. Finalmente, en un acto de liberación, renuncia a su identidad para dejar ir al ave en un viaje de no retorno.
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Taxonomia do complexo Hylophilus poicilotis (Aves: Vireonidae)
The Hylophilus poicilotis complex has been the object of many taxonomic revisions, all of them having in common the absence of adequate reference material, which resulted in a large number of questions, most of them focusing on H. amaurocephalus, which was treated as a full species on occasions or …
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Morfologia comparada da laringe dos Pelecaniformes (Aves)
A preliminary description of the external morphology and of the skeleton of the larynx in sevens species, which are representative of all Pelecaniformes families, set anatomical patterns which allow for the caracterization of each one of the groups described herein. lt also allowed for the …
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Biologia reprodutiva de Formicivora erythronotos (Aves: Thamnophilidae)
… Black-hooded Antwren Formicivora erythronotos (Aves: Passeriformes: Thamnophilidae), an endangered species which is endernic to southwestem Rio de Janeiro State, was studied from July 1997 to December 1999 at Angra dos Reis and Paraty. Most of the 31 nests found were placed by the side of trails …
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A phylogenetic analysis of the Accipitridae (class Aves).
The avian family Accipitridae is a large, diverse family composed of approximately 230 species divided into 56 genera. The evolutionary relationships among Acciptrid taxa have been examined previously using phenetic and parsimony approaches and a variety of data sets. These studies have resulted in …
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The historical biogeography of terrestrial gamebirds (Aves: Galliformes)
Whilst the phylogenetic relations of gamebirds are now well understood, there is a great lack of consensus on their biogeographical relationships. It has been suggested that the basal galliform clades, namely the megapodes from Australasia and the cracids from South and Central America, have their …
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Functional Anatomy of the Feeding Apparatus in Waterfowl (Aves: Anatidae)
Made available in DSpace on 2014-12-04T22:45:49Z (GMT). No. of bitstreams: 1 0010483.pdf: 14603000 bytes, checksum: 8a2f473561dfd0489915e19250152c18 (MD5) Previous issue date: 1954
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Αναπαραγωγική οικολογία του είδους Calonectris diomedea (Aves, Procellariiformes) στις νήσους Στροφάδες
Οι ωκεανοί και γενικότερα οι θάλασσες όπως η Μεσόγειος αποτελούν πολυπαραγοντικά και δυναμικά οικοσυστήματα με ακανόνιστες και πολλές φορές μη προβλέψιμες τροφικές πηγές, γεγονός που επιβάλλει στα θαλασσοπούλια μία στρατηγική στενούς συνεργασίας με τις διακυμάνσεις των ωκεανογραφικών παραμέτρων και …
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Competências distintivas dos produtores integrados de aves no vale do Taquari
… ou estratégicas dos produtores integrados de aves no Vale do Taquari, Rio Grande do Sul, que obtêm resultados financeiros comparativamente superiores em relação aos de baixa performance. A análise teórica se baseou na abordagem de cadeias de produção ou filière, que evidencia uma análise …
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Comparativa de modelos backbone en la identificación de especies de aves peruanas
… como objetivo ayudar en la clasificación de las aves por especies en peligro de extinción a través de la identificación del modelo backbone (DenseNet121, Restnet152, GoogleVit y SwinTransformer). Para ello, se desarrolló un dataset que comprende 5.420 imágenes de 20 especies de aves peruanas, …
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Modelización de hábitats y poblaciones para la conservación de las aves marinas
… en el conocimiento sobre la ecología de las de aves marinas en relación a su distribución espacial y sus tendencias poblacionales en el ámbito de las áreas marinas protegidas. Los resultados y conclusiones obtenidos en los trabajos que componen esta tesis buscan aportar nueva información y …
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Desenvolvimento pós-embrionário de Nothocrax urumutum (Spix, 1825) em cativeiro (Aves, Cracidae)
Described in the first quarter of the 19th century, Nothocrax urumutum remains one of the least known Cracidae, being characterized by unique morphological aspects such as its bare parts and plumage. Between April 1993 and December 1998, it was possible to study the postembryonic development of 28 …
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Palaeoecology and population demographics of the extinct New Zealand moa (Aves: Dinornithiformes).
… of New Zealand’s megafauna, including the moa (Aves: Dinornithiformes), took place at a time of relative climatic stability, and is thought to be due to over-hunting and habitat destruction. The aim of this thesis, using moa as a case study, is to conduct a detailed examination of a megafaunal …
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Papel de las aves en la dispersión de garrapatas y microorganismos que vehiculan
Ticks are vectors of zoonotic diseases of relevant concern for Public Health. Birds are host of these arthropods and they can transport them during their movements, migratory or not. Data about microorganisms harboured by ticks from birds in Spain are scarce. This fact highlighted the necessity of …
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Efectos del pastoreo sobre el éxito de cría de aves de pastizal pampeano
… a la declinación de numerosas especies de aves que habitan este ecosistema y que dependen total o parcialmente de su conservación. El Parque Provincial Ernesto Tornquist, ubicado al Sudoeste de la Provincia de Buenos Aires (Argentina) es uno de los últimos relictos de pastizal pampeano bajo …
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Inference of phylogenetic relationships in passerine birds (Aves: Passeriformes) using new molecular markers
The aim of this study was to provide deeper insights in passerine phylogenetic relationships using new molecular markers. The monophyly of the largest avian order Passeriformes (~59% of all living birds) and the division into its suborders suboscines and oscines are well established. Phylogenetic …
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A PHYLOGENETIC REEVALUATION OF THE GENUS GAVIA (AVES: GAVIIFORMES) USING NEXT-GENERATION SEQUENCING
… relationships between and within taxa. Loons (Aves: Gaviiformes) are one of the oldest living lineages of birds, and the order includes five extant species. The morphological cladogram of <em>Gavia</em> placed <em>G. arctica</em> as a sister species to <em>G. pacifica</em>. However, a more …
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