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Faecal progesterone metabolite analysis for non-invasive monitoring of reproductive function in the white rhinoceros (Ceratotherium simum).
TLDR
Two thirds of white rhinoceroses in this study had erratic or missing luteal activity, whereas variable cycles of 4-10 weeks in length were evident in six females, and regular oestrous cycles of 10 weeks inlength were found in two animals.
Fecal progesterone, estrogen, and androgen metabolites for noninvasive monitoring of reproductive function in the female Indian rhinoceros, Rhinoceros unicornis.
TLDR
In conclusion, estrous cycle and pregnancy in Indian rhinoceroses can be monitored using fecal steroid analysis, andregnane metabolites were reliable indicators of the corpus luteum and pregnancy, whereas fecal 17-oxo-androstanes and estrogens were indicator of the follicular phase.
Allozyme variation and differentiation in African and Indian rhinoceroses.
TLDR
Rinoceroses may be evolving more slowly at the structural gene loci than are some other mammal groups, and the estimate of D = 1.05 +/- 0.24 for the African-Indian split supports this idea.
Subchromosomal karyotype evolution in Equidae
TLDR
The results indicate that the prevailing type of fusion in Equidae is centric fusion, and subchromosomal comparative mapping results suggested that tiny centromere repositioning or pericentric inversions are quite frequent in zebras and asses.
Isolation and comparison of tribe-specific centromeric repeats within Bovidae
TLDR
The results suggest O. oreotragus as well as Aepyceros melampus may be unique species not particularly closely related to any of the recognized bovid tribes.
Diploid chromosome number and chromosomal variation in the white rhinoceros (Ceratotherium simum).
TLDR
Comparison of G-banded karyotypes from the two subspecies failed to indicate a difference in banding pattern, but did reveal size polymorphisms involving short arm additions in five individuals, including three individuals with a diploid number of 2n = 81 in northern white rhinoceroses.
Polymorphism and selection in the major histocompatibility complex DRA and DQA genes in the family Equidae
TLDR
Phylogenetic analysis of both DRA and DQA sequences provided evidence for trans-species polymorphism in the family Equidae, and selected amino acid positions mostly corresponded to selected positions in rodent and human D QA genes.
Karyotypic relationships among Equus grevyi, Equus burchelli and domestic horse defined using horse chromosome arm-specific probes
TLDR
Establishment of the comparative map for E. grevyi and E. burchelli is compared, providing evidence for a very close karyotypic relationship between these two zebra species and the use of arm-specific probes provided more information on the mutual arrangement of the genomes than could be obtained by means of whole-chromosome paints generated by flow sorting.
Centric fusion polymorphism in captive animals of family Bovidae
TLDR
The study showed that 13% of investigated individuals were polymorphic for the centric fusion and demonstrated the important role of cytogenetic screening in captive animals at zoological gardens.
Reproduction of the lesser kudu (Tragelaphus imberbis) at Dvůr Králové Zoo
TLDR
Reproductive data on captive lesser kudus (Tragelaphus imberis) were collected from 1972 to 1990 and the maximum age of successful lactation was 13–14 years.
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