Results 51 to 60 of about 1,466 (142)

Molecular sex identification in birds of prey [PDF]

, 2015
[Resumen] La correcta identificación del sexo de los animales es de vital importancia para la gestión y conservación de la fauna. En el caso de las aves, el sexado a partir de rasgos fenotípicos resulta complicado o imposible en numerosas ocasiones ...
Caeiro Aguado, Manuel
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The molecular basis of chromosome orthologies and sex chromosomal differentiation in palaeognathous birds [PDF]

, 2007
Palaeognathous birds (Struthioniformes and Tinamiformes) have morphologically conserved karyotypes and less differentiated ZW sex chromosomes. To delineate interspecific chromosome orthologies in palaeognathous birds we conducted comparative chromosome ...
Tsuda, Yayoi, Ishijima, Junko, Matsuda, Yoichi, Fujiwara, Atushi, Griffin, Darren K., Nishida-Umehara, Chizuko, Ando, Junko   +6 more
core   +1 more source

The Struthionidae and Pelagornithidae (Aves: Struthioniformes, Odontopterygiformes) from the late Pliocene of Ahl al Oughlam, Morocco

, 2008
The Pliocene locality of Ahl al Oughlam is situated at the southeastern limit of the city of Casablanca, in Morocco, on an ancient seashore of the Atlantic Ocean. It has yielded a very rich vertebrate fauna (macro- and micromammals, birds, reptiles, amphibians and fishes) including both terrestrial and marine forms. On the basis of biostratigraphy, the
Mourer-Chauviré, Cécile, Geraads, Denis   +1 more
openaire   +2 more sources

Le gisement de vertébrés pliocènes de Çalta, Ankara, Turquie. 2. Aves: Struthionidae

, 1998
Une espèce d\u27autruche, Struthio sp. a été identifiée parmi les vertébrés fossiles provenant de la localité pliocène de Çalta en Turquie.
SEN Sevket

Auteur

SEN
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Ostrich ocular optics.

, 2001
The optical structure of the eyes of ostriches (Struthio camelus; Struthionidae; Struthioniformes) was determined by the construction of a schematic eye model for paraxial optics.
Katzir, G, Ashash, U, Martin, Graham
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A DNA test to sex most birds

, 1998
Birds are difficult to sex. Nestlings rarely show sex-linked morphology and we estimate that adult females appear identical to males in over 50% of the world's bird species. This problem can hinder both evolutionary studies and human-assisted breeding of
Dawson, R.J.G., Griffiths, R., Orr, K., Double, M.C.   +3 more
core   +1 more source

Evolution of nest types among archosaurs.

, 2015
(A) Phylogeny of archosaurs with inferred nest types based on eggshell porosity and taphonomic evidence. Covered nests are the primitive condition for dinosaurs; open nests and brooding behavior were present among non-avian maniraptoran theropods but may
François Therrien (738202), Darla K. Zelenitsky (738201), Kohei Tanaka (831041)   +2 more
core   +1 more source

Hyalomma albiparmatum Schulze 1920

, 2020
2. Hyalomma albiparmatum Schulze, 1920. An Afrotropical species whose adults are usually found on Artiodactyla: Bovidae, but they have also been collected from Artiodactyla: Giraffidae and Suidae, Carnivora: Canidae and Felidae, Perissodactyla: Equidae
Robbins, Richard G., Guglielmone, Alberto A., Petney, Trevor N.   +2 more
core   +1 more source

Biological determinants of research effort on Australian birds: a comparative analysis

, 2018
Research effort is not uniform among bird species and may be influenced by multiple biological and environmental factors. Using a phylogenetic comparative approach we examined how research effort into Australian birds is related to phylogeny and tested ...
Michael A. Weston (197114), Matthew R. E. Symonds (470631), Maree R. Yarwood (5599205)   +2 more
core   +1 more source

A new perspective on avian phylogeny - a study based on mitochondrial genomes

, 1999
The Class Aves (birds) is generally divided into two main groups - the Palaeognathae and the Neognathae. Paleognathous birds are the flightless ratites and the tinamous, while Neognathae include all other extant birds (more than 9,000 species).
Bartosch-Härlid, Anna
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