Chromosomal sexing of the Black Shouldered Kite (Elanus caeruleus) (Aves: Accipitridae)

Harris, Thaddeus William; Walters, C.

doi:10.1007/bf00121451

Cited by 8 publications

(5 citation statements)

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“…has increased from 106 to 116. The karyological data on this speciespresented by Harris & Walters (1982) differ slightly from our result. They have reported the diploid count to be 64, while we find it invariably to be 66.…”

Section: Discussioncontrasting

confidence: 99%

Cytotaxonomic study in the order Falconiformes (Aves)

Ansari

Kaul

1986

Zoologica Scripta

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Cytotaxonomic study in the order Falconiformes (Aves).-Zool. Scr. IS: 351-356.Karyotypes of six species of birds of the order Falconiformes are presented. The chromosomes of three of these, Neophron percnopterus, Butastur teesa (family Accipitridae) and Falco chicquera (family Falconidae) are described for the first time. The systematic position of these birds are discussed in relation to the karyological characters of other diurnal birds of prey.

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Section: Discussioncontrasting

confidence: 99%

Cytotaxonomic study in the order Falconiformes (Aves)

Ansari

Kaul

1986

Zoologica Scripta

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“…In some trees either Milvus or Pernis could represent an independent lineage in which an ancestral karyotype has been retained. A third kite, Elanus caeruleus, was found to possess a karyotype that differs considerably from those of Milvus and Pernis (Kaul & Ansari, 1976;Harris & Waiters, 1982). This species was reported to lack satellited chromosomes (Harris and Waiters), but this observation should be confirmed by studying metaphases with elongated chromosomes.…”

Section: Discussionmentioning

confidence: 79%

A karyological study of Accipitridae (Aves: Falconiformes), with karyotypic descriptions of 16 species new to cytology

Boer¹,

Sinoo²

1984

Genetica

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Karyotypic descriptions are given of 16 species of Accipitridae new to cytology, viz. Torgos tracheliotus. For reasons of comparison the karyotypes are included of 5 species that have been previously studied, viz. Gypaetus barbatus, Haliaeetus albicilla, H. leucocephalus, H. vocifer and Pernis apivorus. All these species share the typical characteristics of the accipitrid karyotype, a moderate diploid number (66-72), the absence of large macrochromosomes, the presence of only 6-12 microchromosomes and a high number of mediumsized to small macrochromosomes. Differences exist in the numbers of biarmed and acrocentric autosomes and in the size and shape of a pair of typical satellited marker chromosomes.The karyological relationships in the Accipitridae are briefly discussed. On the basis of the morphology of the pair of satellited chromosomes (acrocentrics, subtelocentrics or microchromosomes) and the numbers of acrocentric elements nine possible phylogenies are constructed. When compared to conventional phylogenetic trees for the Accipitridae, the following points are remarkable in all possible karyological phylogenies: (1) the position of Pithecophaga is uncertain, it either represents an independent ancient lineage or is related to the Old World vultures; (2) Gypaetus probably is not related to the Old World vultures, it rather evolved from an ancester in common with the booted eagles; (3) genera like Buteo, Geranoaetus and Accipiter may have evolved independently from the booted eagles; and (4) the kites probably do not constitute a natural group.

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“…Accurate sex identification is necessary for research (e.g., developmental, population, and evolutionary studies), management of wildlife species, and improvement of captive breeding programmes both for conservation and poultry (Morinha et al, 2012). Several methods have been developed to identify the sex of birds, based on cytogenetic markers (Griffiths & Phil, 2000; Harris & Walters, 1982), identification of sex‐specific differences in morphometric characters (Reynolds et al, 2008; Cappello & Boersma, 2018; Medeiros et al, 2019; Alonso et al, 2019; Seyer et al, 2020) and behaviour (Gray & Hamer, 2001), including vocalization (Volodin et al, 2009), measurement of hormone levels (Bercovitz et al, 1978) and laparoscopy for gonad inspection (Richner, 1989). However, many of these methods have limited applications, because they are time‐consuming, technically demanding (e.g., cytogenetics, morphometrics), potentially harmful (e.g., laparoscopy), or error‐prone.…”

Section: Introductionmentioning

confidence: 99%

Long‐term stability of sex chromosome gene content allows accurate qPCR‐based molecular sexing across birds

Mazzoleni

Němec

Albrecht

et al. 2021

Molecular Ecology Resources

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Birds exhibit long-term stability of their ZZ/ZW sex determination system and striking homology of their sex chromosomes which can be dated back to their common ancestor living approximately 80-120 million years ago (Mank & Ellegren, 2007;Shetty et al., 1999).Cytogenetic analyses, such as C-and G-banding and comparative chromosome painting with probes specific for the chicken Z chromosome, have revealed polymorphism in size, genomic content and heterochromatin distribution of W chromosomes across bird species

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Chromosomal sexing of the Black Shouldered Kite (Elanus caeruleus) (Aves: Accipitridae)

Abstract: The karyotypes of a male and female Black Shouldered Kite (Elanus caeruleus) are presented and their position in the Accipitridae discussed.

Cited by 8 publications

References 5 publications

Cytotaxonomic study in the order Falconiformes (Aves)

Cytotaxonomic study in the order Falconiformes (Aves)

A karyological study of Accipitridae (Aves: Falconiformes), with karyotypic descriptions of 16 species new to cytology

Long‐term stability of sex chromosome gene content allows accurate qPCR‐based molecular sexing across birds

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