Journal Article10.1007/BF00127249
ZZW autotriploidy in a Blue-and-Yellow Macaw
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TL;DR: The genome size, cellular and nuclear dimensions of erythrocytes, and sex chromosome composition in a triploid Blue-and-Yellow Macaw (Ara ararauna) and its diploid parents are described to show polyploidy has been reported only in one other family of birds (Phasianidae).
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Abstract: We describe genome size (nuclear DNA content), and cellular and nuclear dimensions of erythrocytes in a triploid Blue-and-Yellow Macaw (Ara ararauna) and its diploid parents. The genome size of the triploid (4.23 pg) was 1.5 times greater than the genome size of the mother (2.80 pg) and the father (2.89 pg). The sex chromosome composition was ZZW, and was predicted correctly based on the genome size of the parents. Erythrocytes of the triploid were significantly larger than the erythrocytes of the parents. Because polyploidy has been reported only in one other family of birds (Phasianidae), the parrots and their relatives might prove to be useful in the study of avian triploidy.
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Citations
Polyploidy in Animals
T. Ryan Gregory,Barbara K. Mable +1 more
- 01 Jan 2005
TL;DR: This chapter provides an outline of the methods used for classifying and identifying polyploid animals, followed by a discussion of proposed explanations for its relative rarity as compared to plants (where it may be near-ubiquitous).
181
Sex Reversal in Birds.
Andrew T. Major,Craig A. Smith +1 more
TL;DR: How recent studies on sex reversal and gynandromorphic birds (half male:half female) are shaping the understanding of sexual differentiation in avians and in vertebrates more broadly is considered.
49
Triploid plover female provides support for a role of the W chromosome in avian sex determination
Clemens Küpper,Jakob Augustin,Jakob Augustin,Scott V. Edwards,Tamás Székely,András Kosztolányi,Terry Burke,Daniel E. Janes +7 more
TL;DR: The results suggest a prominent role for a female determining gene on the W chromosome, which implies that avian sex determination is more dynamic and complex than currently envisioned.
Flow cytometric analysis of nuclear DNA for sex identification in three psittacine species.
TL;DR: Flow cytometric analysis was accurate for sex identification of Amazon parrots and budgerigars and for both sexes, DNA content in samples analyzed immediately was significantly different from that of stored samples.
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Genome size rather than content might affect call properties in toads of three ploidy levels (Anura: Bufonidae: Bufo viridis subgroup)
TL;DR: This study supports the idea that genome size, irrespective of call type, phylogenetic context, and geographical background, might affect call properties in anurans and suggests a common principle governing this relationship.
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