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  • 1
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    Genetic restoration of the Florida panther (2010)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 2010-10-12
    Description: The rediscovery of remnant Florida panthers (Puma concolor coryi) in southern Florida swamplands prompted a program to protect and stabilize the population. In 1995, conservation managers translocated eight female pumas (P. c. stanleyana) from Texas to increase depleted genetic diversity, improve population numbers, and reverse indications of inbreeding depression. We have assessed the demographic, population-genetic, and biomedical consequences of this restoration experiment and show that panther numbers increased threefold, genetic heterozygosity doubled, survival and fitness measures improved, and inbreeding correlates declined significantly. Although these results are encouraging, continued habitat loss, persistent inbreeding, infectious agents, and possible habitat saturation pose new dilemmas. This intensive management program illustrates the challenges of maintaining populations of large predators worldwide.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉Johnson, Warren E -- Onorato, David P -- Roelke, Melody E -- Land, E Darrell -- Cunningham, Mark -- Belden, Robert C -- McBride, Roy -- Jansen, Deborah -- Lotz, Mark -- Shindle, David -- Howard, JoGayle -- Wildt, David E -- Penfold, Linda M -- Hostetler, Jeffrey A -- Oli, Madan K -- O'Brien, Stephen J -- N01-CO-12400/CO/NCI NIH HHS/ -- Intramural NIH HHS/ -- New York, N.Y. -- Science. 2010 Sep 24;329(5999):1641-5. doi: 10.1126/science.1192891.〈br /〉〈span class="detail_caption"〉Author address: 〈/span〉Laboratory of Genomic Diversity, National Cancer Institute, Frederick, MD 21702, USA. warjohns@mail.nih.gov〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/20929847" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; Animals, Wild/classification/genetics/physiology ; Ecosystem ; *Endangered Species ; Female ; Florida ; Genetic Fitness ; *Genetic Variation ; Heterozygote ; Hybrid Vigor ; *Hybridization, Genetic ; Inbreeding ; Male ; Phylogeny ; Population Density ; Puma/classification/*genetics/physiology ; Reproduction ; Survival ; Texas
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 2
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    Giant panda paternity (1984)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1984-03-16
    Description: 〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Brien, S J -- Goldman, D -- Knight, J -- Moore, H D -- Wildt, D E -- Bush, M -- Montali, R J -- Kleiman, D -- New York, N.Y. -- Science. 1984 Mar 16;223(4641):1127-8.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/6701515" target="_blank"〉PubMed〈/a〉
    Keywords: Animals ; *Carnivora ; Male ; *Paternity ; Polymorphism, Genetic ; Proteins/analysis
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 3
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    The cheetah is depauperate in genetic variation (1983)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1983-07-29
    Description: A sample of 55 South African cheetahs (Acinonyx jubatus jubatus) from two geographically isolated populations in South Africa were found to be genetically monomorphic at each of 47 allozyme (allelic isozyme) loci. Two-dimensional gel electrophoresis of 155 abundant soluble proteins from cheetah fibroblasts also revealed a low frequency of polymorphism (average heterozygosity, 0.013). Both estimates are dramatically lower than levels of variation reported in other cats and mammals in general. The extreme monomorphism may be a consequence of a demographic contraction of the cheetah (a population bottleneck) in association with a reduced rate of increase in the recent natural history of this endangered species.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'brien, S J -- Wildt, D E -- Goldman, D -- Merril, C R -- Bush, M -- New York, N.Y. -- Science. 1983 Jul 29;221(4609):459-62.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/17755482" target="_blank"〉PubMed〈/a〉
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 4
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    Genetic basis for species vulnerability in the cheetah (1985)
    American Association for the Advancement of Science (AAAS)
    Details
    Publication Date: 1985-03-22
    Description: A population genetic survey of over 200 structural loci previously revealed that the South African cheetah (Acinonyx jubatus jubatus) has an extreme paucity of genetic variability, probably as a consequence of a severe population bottleneck in its recent past. The genetic monomorphism of the species is here extended to the major histocompatibility complex, since 14 reciprocal skin grafts between unrelated cheetahs were accepted. The apparent consequences of such genetic uniformity to the species include (i) great difficulty in captive breeding, (ii) a high degree of juvenile mortality in captivity and in the wild, and (iii) a high frequency of spermatozoal abnormalities in ejaculates. The species vulnerability of the cheetah was demonstrated by an epizootic of coronavirus-associated feline infectious peritonitis in an Oregon breeding colony in 1983. Exposure and spread of the coronavirus, which has a very low morbidity in domestic cats (approximately 1 percent), has decimated a heretofore productive and healthy captive population. The extreme genetic monomorphism, especially at the major histocompatibility complex, and the apparent hypersensitivity of the cheetah to a viral pathogen may be related, and provide a biological basis for understanding the adaptive significance of abundant genetic variation in outbred mammalian species.〈br /〉〈span class="detail_caption"〉Notes: 〈/span〉O'Brien, S J -- Roelke, M E -- Marker, L -- Newman, A -- Winkler, C A -- Meltzer, D -- Colly, L -- Evermann, J F -- Bush, M -- Wildt, D E -- New York, N.Y. -- Science. 1985 Mar 22;227(4693):1428-34.〈br /〉〈span class="detail_caption"〉Record origin:〈/span〉 〈a href="http://www.ncbi.nlm.nih.gov/pubmed/2983425" target="_blank"〉PubMed〈/a〉
    Keywords: Acinonyx/*genetics/immunology/physiology ; Adaptation, Physiological ; Animals ; Animals, Zoo ; Biological Evolution ; Carnivora/*genetics ; Coronaviridae Infections/genetics/immunology/*veterinary ; Disease Susceptibility/*veterinary ; Female ; Fertility ; *Genetic Variation ; Graft Rejection ; Inbreeding ; *Major Histocompatibility Complex ; Male ; Pedigree
    Print ISSN: 0036-8075
    Electronic ISSN: 1095-9203
    Topics: Biology , Chemistry and Pharmacology , Computer Science , Medicine , Natural Sciences in General , Physics
    Published by American Association for the Advancement of Science (AAAS)
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  • 5
    Electronic Resource
    Electronic Resource
    Reproductive and genetic consequences of founding isolated lion populations (1987)
    [s.l.] : Nature Publishing Group
    Nature 329 (1987), S. 328-331 
    Details
    ISSN: 1476-4687
    Source: Nature Archives 1869 - 2009
    Topics: Biology , Chemistry and Pharmacology , Medicine , Natural Sciences in General , Physics
    Notes: [Auszug] The lion (Panthera leo) is an attractive candidate for studying the interrelationship of genetics and reproduction. Lions have been studied extensively for centuries, and their numbers in Africa are vast (estimated as high as 200,000)8. The demography and behaviour of the lions in the Serengeti ...
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1038/329328a0
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  • 6
    Electronic Resource
    Electronic Resource
    Electroejaculation and semen analysis in a male lowland gorilla,Gorilla gorilla gorilla (1980)
    Springer
    Primates 21 (1980), S. 130-132 
    Details
    ISSN: 0032-8332
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Two electroejaculations and a testicular biopsy were performed on a lowland gorilla,Gorilla gorilla gorilla, to determine fertility. Sperm morphology showed 92.5% abnormal sperm which were of primary, or testicular, origin. Testicular biopsy revealed abnormally shaped nuclei in the later stages of spermiogenesis, supporting the semen analysis performed from the electroejaculations. The majority of abnormalities consisted of pyriform heads (23%) and abnormal acrosomes (35%).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02383831
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  • 7
    Electronic Resource
    Electronic Resource
    Correlation of perineal swelling with serum ovarian hormone levels, vaginal cytology, and ovarian follicular development during the baboon reproductive cycle (1977)
    Springer
    Primates 18 (1977), S. 261-270 
    Details
    ISSN: 0032-8332
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract Perineal swelling was correlated with changes in vaginal cytology and serum ovarian hormone levels and with development of the ovarian follicle. The average length of 66 menstrual cycles as seen in 12 mature baboons was 35.7±.66 days with a range of 25 to 47 days. Laparoscopic observations and photographic documentation of follicular development were made as early as 13 days prior to ovulation with the most rapid follicular maturation occurring 24 to 48 hours before ovulation. In 38.5% of the cycles ovulation occurred on the last day of maximal perineal tumescence with 26.9% of the ovulations occurring one day after initial detumescence. In 17.8% ovulations occurred two to five days prior to detumescence while the remaining 17.8% occurred two to three days following first observed detumescence. The mean progesterone level during the follicular phase was significantly less than that in the luteal phase, 1.6 and 6.7 ng/ml respectively (p〈0.01). The level of estrogen detected during the periods of maximal tumescence was significantly higher (p〈0.05) than that detected in the remainder of the cycle, 19.8 and 5.9 pg/ml respectively. Vaginal smears were stained, observed microscopically, and found to correlate with perineal swelling, hormone levels, and laparoscopic observations.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF02383104
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  • 8
    Electronic Resource
    Electronic Resource
    In Vitro maturation and fertilization of domestic cat follicular oocytes (1989)
    New York, NY : Wiley-Blackwell
    Gamete Research 24 (1989), S. 343-356 
    Details
    ISSN: 0148-7280
    Keywords: maturation of oocytes ; chromosomes ; IVF ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The time course and conditions necessary for oocyte maturation and subsequent fertilization in vitro were studied in the domestic cat. Darkly pigmented oocytes surrounded by cumulus cells and a tight corona radiata were collected from ovaries removed at ovariohysterectomy. After culture in Eagle's minimum essential medium, oocytes were evaluated for nuclear maturation by analyzing chromosomal spreads. Oocytes achieved metaphase II after intervals of 40-48 hr of in vitro incubation. The incidence of maturation was enhanced (P〈0.05) when oocytes were recovered from inactive (54%) or follicular (56%) stage donors compared to those recovered from luteal phase (29%) or pregnant (35%) cats. The proportion of oocytes successfully maturing in vitro in medium containing no hormone supplementation (37%) was less (P〈0.01) than counterparts cultured in follicle-stimulating hormone (FSH) only (48%) or FSH and luteinizing hormone (LH) (54%). The efficiency of maturation was not influenced (P 〉0.05) by either maintenance/transport temperature (4°C vs. 22°C) or delaying recovery of oocytes from antral follicles (2-8 hr vs. 24-32 hr). Approximately 36% of the in vitro matured oocytes cocultured with spermatozoa demonstrated evidence of fertilization; however, there appeared to be a critical development period for maximizing the incidence of fertilization. These results demonstrate that domestic cat antral oocytes are capable of maturing in vitro, and maturation is influenced by the reproductive status of the donor and the presence of gonadotropins in the culture medium. These oocytes are capable of forming embryos and developing to at least the 16-cell stage in vitro.
    Additional Material: 4 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1120240310
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  • 9
    Electronic Resource
    Electronic Resource
    Toxicity potential of residual ethylene oxide on fresh or frozen embryos maintained in plastic straws (1988)
    New York, NY : Wiley-Blackwell
    Gamete Research 19 (1988), S. 31-39 
    Details
    ISSN: 0148-7280
    Keywords: embryo development ; ethylene oxide ; toxicity ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The toxic effects of residual ethylene oxide (EtO), a frequently used gas-sterilant, on embryos either frozen for long-term purposes or stored acutely for 30 min to 9 hr in a fresh condition in 0.25-ml straw containers were evaluated. In Experiment 1, fresh embryos were frozen (using conventional technology) in straws previously aerated for 0 hr to 8 mo after EtO sterilization. With the exception of the 8-mo group in which survival and quality ratings were depressed, embryo viability was not affected significantly by short-term prefreeze and post-thaw exposure to EtO residues. Experiment 2 was conducted to analyze the influence of prefreeze exposure to EtO residues on embryo development in vitro for embryos temporarily stored in previously sterilized straws aerated for different intervals. Compared to non-EtO-sterilized control straws, the development, quality, and viability of embryos exposed to EtO-treated straws were compromised (p 〈 0.05) as the aeration interval decreased and the exposure interval increased. The combined results of both experiments indicate that EtO-treated straws can be used to cryopreserve gametes efficiently, but only if the aeration interval is ≥72 hr and the prefreeze duration of exposure is ≤3 hr.
    Additional Material: 1 Ill.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1120190104
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  • 10
    Electronic Resource
    Electronic Resource
    Pregnant mares' serum gonadotropin source influences fertilization and fresh or thawed embryo development, but the effect is genotype specific (1989)
    New York, NY : Wiley-Blackwell
    Gamete Research 23 (1989), S. 11-20 
    Details
    ISSN: 0148-7280
    Keywords: gonadotropin source ; in vitro embryo development ; embryo cryopreservation ; genotype ; mouse ; Life and Medical Sciences ; Cell & Developmental Biology
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Biology
    Notes: The influence of the source of pregnant mares' serum gonadotropin (PMSG) on the num ber, quality, and in vitro development of mouse embryos before and after freezing was evaluated among three genotypes: N:NIH(S), C57BL/6N, and C3H/HeN-MTV-. Immature females were given PMSG from one of five commercial sources. Following col lection ( 116 hr later), embryos were evaluated for stage of development, and four-to eight-cell embryos were pooled within genotype and assigned to standardized fresh or freeze-thaw culture trials. Different PMSG sources stimulated the production of different num bers of total embryos (P 〈 0.05) but not necessarily more embryos suitable for freezing. Differences in embryo production among genotypes indicated that absolute embryo num bers using a single mouse genotype may not accurately reflect the potency of a specific gonadotropin source. The PMSG source also affected the ability of an embryo to survive in culture either immediately after collection or after frozen storage. The effect, however, was genotype specific, with some mouse strains being relatively insensitive to PMSG source, whereas gonadotropin source played a major role in determining in vitro viability in others. Development rates for freshly collected embryos differed, often inconsistently, from those of thawed embryos regardless of the PMSG source used, demonstrating that fresh embryo development cannot be used to estimate expected post-thaw survival. In vitro development of thawed embryos is influenced not only by genotype, but also the source of the gonadotropin used to promote follicular development and oocyte maturation. These findings may explain, in part, the wide variation in embryo viability and culture rates reported among laboratories and intraspecies animal populations.
    Additional Material: 6 Tab.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1002/mrd.1120230103
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