A fertile mule and hinny in China

Rong, Raoxing; Chandley, A.C.; Song, Junjie; McBeath, S.; Tan, P. Philip; Bai, Quan; Speed, R. M.

doi:10.1159/000132531

Cited by 27 publications

(16 citation statements)

References 9 publications

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“…Karyotype characteristics (2n and chromosome morphology) are in agreement with previous data published for the E. asinus ( Ryder et al. 1978; Rong et al. 1988; Raudsepp et al.…”

Section: Discussionsupporting

confidence: 91%

A centric fission and heterochromatin polymorphism inEquus asinusSpanish breeds

Alaoui¹,

Jordana

Ponsà³

2004

J Animal Breeding Genetics

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SummaryIn this work a chromosomal study in Equus asinus is presented. Forty-two specimens, belonging to five different Spanish breeds in risk of disappearing, have been analysed. Metaphases have been sequentially stained (uniform, G-banded and C-banded) and analysed. All specimens, except one, presented 2n ¼ 62 chromosomes. Variation in chromosome number (2n ¼ 63) is because of a fission in one chromosome of pair no. 3, resulting in two acrocentric chromosomes. Polymorphisms affecting the size of heterochromatic C+ bands and the presence of hetrochromatic 1p and 4p arms are also analysed. The results show no polymorphisms which can be attributed to a particular breed. From the chromosomal point of view, all Spanish asinine specimens correspond to a single population. Rearrangements detected suggest a fission tendency in the homologous E. asinus no. 3 chromosome in Equidae species. Zusammenfassung

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“…Karyotype characteristics (2n and chromosome morphology) are in agreement with previous data published for the E. asinus ( Ryder et al. 1978; Rong et al. 1988; Raudsepp et al.…”

Section: Discussionsupporting

confidence: 91%

A centric fission and heterochromatin polymorphism inEquus asinusSpanish breeds

Alaoui¹,

Jordana

Ponsà³

2004

J Animal Breeding Genetics

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“…In order to evaluate the fitness of the female, reproductive parameters such as meiotic parameters in germ cells of fetuses have been used [28-30], together with histological evaluation of the ovaries [30-33] and successful reproduction involving the production of viable fawns [34,35]. Current techniques that produce viable results in a short period of time, such as in vitro testing, may also help to infer the reproductive capacity of female hybrids.…”

Section: Introductionmentioning

confidence: 99%

The role of chromosome variation in the speciation of the red brocket deer complex: the study of reproductive isolation in females

Cursino

Salviano²,

Abril

et al. 2014

BMC Evol Biol

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BackgroundThe red brocket deer, Mazama americana, has at least six distinct karyotypes in different regions of South America that suggest the existence of various species that are today all referred to as M. americana. From an evolutionary perspective, the red brockets are a relatively recent clade that has gone through intense diversification. This study sought to prove the existence of post-zygotic reproductive isolation in deer offspring between distinct chromosome lineages. To achieve this, inter-cytotype and intra-cytotype crosses were performed, which resulted in both F1 hybrid (n = 5) and pure offspring (n = 3) in captivity.ResultsF1 females were analyzed in terms of their karyotypes, ovarian histology, estrous cycles and in vitro embryo production. Pure females presented parameters that were similar to those previously reported for M. Americana; however, the parameters for hybrid females were different. Two hybrids were determined to be sterile, while the remaining hybrids presented characteristics of subfertility.ConclusionsThe results support the existence of well-established reproductive isolation among the most distant karyotype lineages and elucidates the need to define all karyotype variants and their geographical ranges in order to define the number of species of red brocket.

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“…Cases of occasional fertility of female mules or hinnies have been reported in the past (Groth 1928; Bielanski 1955; Bielanski & Zapatel 1968; Gray 1971; Ryder et al. 1985; Rong et al. 1988; Greig et al.…”

Section: Maternal Chromosome‐passing Pattern In Hybrids Of Horse Andmentioning

confidence: 99%

Molecular and cytogenetic paternity testing of a male offspring of a hinny

Zhao

Qin

Lee

et al. 2006

J Animal Breeding Genetics

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An alleged male foal of a female mule, whose sire and grandparents were unknown, was identified for its pedigree. Parentage testing was conducted by comparing polymorphism of 12 microsatellite DNA sites and mitochondrial D-loop sequences of the male foal and the female mule. Both the sequence analysis of species-specific DNA fragments and a cytogenetic analysis were performed to identify the species of the foal and its parents. The results showed that the alleged female mule is actually a hinny, and the male foal, which possesses 62 chromosomes, qualifies as an offspring of the female hinny and a jack donkey.

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A fertile mule and hinny in China

Cited by 27 publications

References 9 publications

A centric fission and heterochromatin polymorphism inEquus asinusSpanish breeds

A centric fission and heterochromatin polymorphism inEquus asinusSpanish breeds

The role of chromosome variation in the speciation of the red brocket deer complex: the study of reproductive isolation in females

Molecular and cytogenetic paternity testing of a male offspring of a hinny

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