Chromosomal analysis in Cathartidae: distribution of heterochromatic blocks and rDNA, and phylogenetic considerations

  title={Chromosomal analysis in Cathartidae: distribution of heterochromatic blocks and rDNA, and phylogenetic considerations},
  author={Marcella Mergulh{\~a}o Tagliarini and J{\'u}lio C{\'e}sar Pieczarka and Cleusa Yoshiko Nagamachi and Jorge Dores Rissino and Edivaldo Herculano Corr{\^e}a de Oliveira},
Three species of Cathartidae (Sarcoramphus papa, Cathartes aura and Cathartes burrovianus) were cytogenetically characterized by G- and C-banding. 18S–28S rDNA was used as a probe to map major ribosomal clusters. These species showed very similar karyotypes, with 2n = 80, 10 pairs of macrochromosomes, a submetacentric Z and a metacentric W chromosome. However, differences were found in the amount and distribution of heterochromatic blocks: S. papa showed heterochromatin only in the… 
Molecular Cytogenetic Characterization of Multiple Intrachromosomal Rearrangements in Two Representatives of the Genus Turdus (Turdidae, Passeriformes)
Karyotype analysis in Turdus revealed that this genus has derived characteristics in relation to the putative avian ancestral karyotype, highlighting the importance of using new tools for analysis of chromosomal evolution in birds, such as the probes derived from L. albicollis, which make it possible to identify intrachromosomal rearrangements not visible with the use of GGA chromosome painting solely.
Cytotaxonomy of Eurypyga helias (Gruiformes, Eurypygidae): First Karyotypic Description and Phylogenetic Proximity with Rynochetidae
The karyotype of the sunbittern is described for the first time, by classical and molecular cytogenetics, using whole chromosome probes derived from Gallus gallus and Leucopternis albicollis to suggest a close phylogenetic relationship between Eurypigidae and Rynochetidae, whose common ancestor was separated by the Gondwana vicariancy in South America and New Caledonia.
Chromosome Painting in Tyrant Flycatchers Confirms a Set of Inversions Shared by Oscines and Suboscines (Aves, Passeriformes)
Tyrannidae tyrants show the typical karyotype found in Passeriformes, suggesting that the observed rearrangements occurred before the division of the suborders Oscines and Suboscines.
Chromosome Painting in Trogon s. surrucura (Aves, Trogoniformes) Reveals a Karyotype Derived by Chromosomal Fissions, Fusions, and Inversions
The aim of this study was to characterize the karyotype of Trogon surrucura surru cura by means of classical and molecular cytogenetics, and found a diploid chromosome number of 2n = 82, similar to most birds, with several derived features compared to chicken and the putative ancestral avian karyotypes.
NOR- bearing as a plesiomorphic characteristic in Mimus saturninus (Passeriformes Mimidae)
The aim of this study was to analyze the chromosomal complement from the species Mimus saturninus by conventional staining and differential chromosome banding, as well as the distribution pattern of constitutive heterochromatin (CBG-banding), GTG- banding andAgNOR staining (NORs).
The distribution of 45S rDNA sites in bird chromosomes suggests multiple evolutionary histories
Overall, this study indicated that the redistribution of the 45S rDNA sites in bird chromosomes followed different evolutionary trajectories with respect to each lineage of the class Aves.
The complete mitochondrial genomes of Tarsiger cyanurus and Phoenicurus auroreus: a phylogenetic analysis of Passeriformes
The relationships between some species of the order passeriformes may remain difficult to resolve despite an effort to collect additional characters for phylogenetic analysis, and current research of avian phylogeny should focus on adding characters and taxa and use both effectively to obtain a better resolution for deeper and shallow nodes.
Maintenance of syntenic groups between Cathartidae and Gallus gallus indicates symplesiomorphic karyotypes in new world vultures
Similarities between New World and Old World vultures have been interpreted to reflect a close relationship and to suggest the inclusion of both in Accipitridae (Falconiformes). However, deeper
Evolution of modern birds revealed by mitogenomics: timing the radiation and origin of major orders.
These analyses indicate that by improving the taxonomic sampling, complete mt genomes can solve the evolutionary relationships among major bird groups and support the choice of COX 1 among mt genes as target for developing DNA barcoding approaches in birds.


The karyotype of the Iberian imperial eagle (Aquila adalberti) analyzed by classical and DNA replication banding
The Iberian imperial eagle (Aquila adalberti) had a diploid number of 82 chromosomes and a greater number of microchromosomes than has been found in all other species of the Accipitridae family, corroborating the recent separation of A. adAlberti from A. heliaca on the basis of molecular data.
A phylogenetic study of bird karyotypes
A major role had been played by centric fission as well as fusion, translocation, and pericentric inversion in birds to elucidate mechanisms involved in certain structural changes of macrochromosomes observed in birds.
The somatic chromosome complements of 16 species of falconiformes (Aves) and the karyological relationships of the order
The variation in karyotypic structures found in the Falconiformes is much wider than that in other avian groups, however, it remains an unanswered question whether this karyological heterogenelty points to a polyphyletic origin of the diurnal birds of prey.
Characterization of the atypical karyotype of the black-winged kite Elanus caeruleus (Falconiformes: Accipitridae) by means of classical and molecular cytogenetic techniques
The karyotype of the black-winged kite (Elanus caeruleus), a small diurnal raptor living in Africa, Asia and southern Europe, was studied with classical and molecular cytogenetic methods and is considered in the context of the modes of karyotypic evolution in birds.
A Karyological Study of Some Corvine Birds (Corvidae, Aves)
Corvine birds of Primorskii Krai were karyotyped for the first time and were shown to have a similar structure of karyotype to the basic structural scheme of the karyotypes in the order Passeriformes, which confirms the concept of conservatism of the avian kARYotype.
Molecular and cytogenetic organization of the 5S ribosomal DNA array in chicken (Gallus gallus)
The 5S ribosomal (r) RNA genes encode a small (∼120-bp) highly-conserved component of the large ribosomal subunit. The objective of the present research was to study the molecular and cytogenetic
Cytogenetic analysis of California condor (Gymnogyps californianus) chromosomes: comparison with chicken (Gallus gallus) macrochromosomes
Detailed cytogenetic and basic comparative information on condor chromosomes is provided that suggests that the condor sex chromosomes have not completely differentiated during evolution, which is unlike the majority of the non-ratites studied up till now.
Karyotypic evolution in the Galliformes: An examination of the process of karyotypic evolution by comparison of the molecular cytogenetic findings with the molecular phylogeny
The process of the evolutionary changes of macrochromosomes in the 13 species was in good accordance with the molecular phylogeny, and the ancestral karyotype of the Galliformes is represented.
Phylogeny of the avian family Ciconiidae (storks) based on cytochrome b sequences and DNA-DNA hybridization distances.
  • B. Slikas
  • Biology
    Molecular phylogenetics and evolution
  • 1997
A combinable-component consensus of the best-fit DNA-DNA hybridization tree and a consensus tree based on different analyses of the cytochrome b sequences provide the best estimate of relationships among stork species based on the two data sets.
First karyotypical description of two American Ciconiiform birds, Mycteria americana (Ciconiidae) and Platalea ajaja (Threskiornithidae) and its significance for the chromosome evolutionary and biological conservation approaches
This first chromosome characterization of M. americana and P. ajaja is an important tool for the conservation of both species and a better understanding of the chromosome relationships among Ciconiiformes.