Publications
| Title | Abstract | Year(sorted descending) Filter | PMID Filter |
|---|
| bilateral intratesticular spermatoceles in a critically endangered dama gazelle (nanger dama mhorr). | dama gazelles (nanger dama mhorr) are considered critically endangered by the iucn red list of threatened species since the wild population is comprised of fewer than 200 animals. several zoos in europe and some private ranches in the us (texas) maintain this species in captivity as a hedge against extinction. a routine reproductive exam on an adult male revealed bilateral cysts in the testicular parenchyma. the fluid in the cysts contained copious, moderately progressive motile spermatozoa. fol ... | 2020 | 32724700 |
| evidence of exposure to usuv and wnv in zoo animals in france. | west nile virus (wnv) and usutu virus (usuv) are zoonotic arboviruses. these flaviviruses are mainly maintained in the environment through an enzootic cycle involving mosquitoes and birds. horses and humans are incidental, dead-end hosts, but can develop severe neurological disorders. nevertheless, there is little data regarding the involvement of other mammals in the epidemiology of these arboviruses. in this study, we performed a serosurvey to assess exposure to these viruses in captive birds ... | 2020 | 33266071 |
| coxiella burnetii in wild mammals: a systematic review. | coxiella burnetii is a multi-host bacterium that causes q fever in humans, a zoonosis that is emerging worldwide. the ecology of c. burnetii in wildlife is still poorly understood and the influence of host, environmental and pathogen factors is almost unknown. this study gathers current published information on different aspects of c. burnetii infection in wildlife, even in species with high reservoir potential and a high rate of interaction with livestock and humans, in order to partially fill ... | 2019 | 30506629 |
| effectiveness of ultra-rapid cryopreservation of sperm from endangered species, examined by morphometric means. | this study compares the effectiveness of the ultra-rapid and conventional freezing of sperm from captive bovids, giraffids, cervids, ursids, a cercopithecid, a delphinid and a phascolarctid. the relationship between sperm head dimensions and cryosurvival was also examined. compared to conventional freezing, the ultra-rapid freezing of epididymal sperm from the dama gazelle, giraffe and brown bear returned higher cryoresistance ratios (cr, the ratio, in percentage, between the value of the variab ... | 2019 | 30852388 |
| pretreatment with cholesterol-loaded cyclodextrins prevents loss of motility associated proteins during cryopreservation of addra gazelle (nanger dama ruficollis) spermatozoa. | sperm cryopreservation is challenging, often resulting in irreversible damage to spermatozoa, as indicated by decreased motility, viability, and/or acrosomal integrity. developing cryopreservation protocols for gametes of endangered species compounds the complexity of technique optimization; samples are difficult to obtain and numbers are limited. cryopreservation of sperm collected from the critically endangered addra gazelle (nanger dama ruficollis), a member of the bovidae family, resulted in ... | 2018 | 29458042 |
| non-invasive hormonal characterization of the ovarian cycle, pregnancy, and seasonal anestrus of the female addra gazelle (nanger dama ruficollis). | non-invasive fecal hormone metabolite monitoring was used to characterize the estrous cycle, pregnancy, and seasonal anestrus of the critically endangered addra gazelle (nanger dama ruficollis). with less than 250 animals remaining in the wild and ∼168 individuals managed in captivity, it is crucial to maintain sustainable populations. progestogen and estrogen profiles were obtained from analysis of fecal samples collected approximately every other day, within varying intervals, over the course ... | 2017 | 28460687 |
| coxiella burnetii detected in three species of endangered north african gazelles that recently aborted. | coxiella (c.) burnetii is the etiological agent of the zoonotic disease known a q fever. this agent can infect multiple hosts although its pathogenic potential in wild ruminants has been poorly studied. the polymerase chain reaction and the serological test detected the presence of c. burnetii in a population of north african gazelles (n = 355), comprising dorcas gazelle (gazella dorcas neglecta), dama gazelle (nanger dama mhorr) and cuvier's gazelle (gazella cuvieri) which, some of them, they r ... | 2017 | 27771116 |
| retrospective evaluation of histopathologic findings in captive gazelle species. | capturing disease trends among different species has indisputable value to both veterinary clinicians and zoo managers for improving the welfare and management of zoo species. the causes of mortality for eight species of gazelle (addra gazelle, nanger dama; dorcas gazelle, gazella dorcas; grant's gazelle, nanger granti; sand gazelle, gazella leptoceros; saudi goitered gazelle, gazella subgutturosa; soemmerring's gazelle, nanger soemmerringii; thomson's gazelle, eudorcas thomsonii; and speke's ga ... | 2016 | 27010271 |
| pretreatment of addra gazelle (nanger dama ruficollis) spermatozoa with cholesterol-loaded cyclodextrins improves cryosurvival. | preserving genetic diversity of the critically endangered addra gazelle (nanger dama ruficollis) could be enhanced through the use of frozen-thawed sperm and artificial insemination. our aim was to characterize addra ejaculate traits and to assess the effects of cholesterol-loaded cyclodextrin (clc) on sperm cryosurvival. fresh ejaculates were treated with clc (0, 0.5, 1.5, 3.0, and 6.0 mg/ml) prior to cryopreservation. all males produced spermic ejaculates with >75% sperm motility. the mean ± s ... | 2016 | 27621115 |
| meiotic behaviour of evolutionary sex-autosome translocations in bovidae. | the recurrent occurrence of sex-autosome translocations during mammalian evolution suggests common mechanisms enabling a precise control of meiotic synapsis, recombination and inactivation of sex chromosomes. we used immunofluorescence and fish to study the meiotic behaviour of sex chromosomes in six species of bovidae with evolutionary sex-autosome translocations (tragelaphus strepsiceros, taurotragus oryx, tragelaphus imberbis, tragelaphus spekii, gazella leptoceros and nanger dama ruficollis) ... | 2016 | 27136937 |
| digesta kinetics in gazelles in comparison to other ruminants: evidence for taxon-specific rumen fluid throughput to adjust digesta washing to the natural diet. | digesta flow plays an important role in ruminant digestive physiology. we measured the mean retention time (mrt) of a solute and a particle marker in the gastrointestinal tract (git) and the reticulorumen (rr) of five gazelles and one dikdik species. species-specific differences were independent from body mass (bm) or food intake. comparative evaluations (including up to 31 other ruminant species) indicate that mrt git relate positively to bm, and are less related to feeding type (the percentage ... | 2015 | 25637787 |
| nanger, eudorcas, gazella, and antilope form a well-supported chromosomal clade within antilopini (bovidae, cetartiodactyla). | the evolutionary clade comprising nanger, eudorcas, gazella, and antilope, defined by an x;bta5 translocation, is noteworthy for the many autosomal robertsonian fusions that have driven the chromosome number variation from 2n = 30 observed in antilope cervicapra, to the 2n = 58 in present eudorcas thomsoni and eudorcas rufifrons. this work reports the phylogenetic relationships within the antilopini using comprehensive cytogenetic data from a. cervicapra, gazella leptoceros, nanger dama ruficoll ... | 2015 | 25416455 |
| splitting or lumping? a conservation dilemma exemplified by the critically endangered dama gazelle (nanger dama). | managers of threatened species often face the dilemma of whether to keep populations separate to conserve local adaptations and minimize the risk of outbreeding, or whether to manage populations jointly to reduce loss of genetic diversity and minimise inbreeding. in this study we examine genetic relatedness and diversity in three of the five last remaining wild populations of dama gazelle and a number of captive populations, using mtdna control region and cytochrome b data. despite the sampled p ... | 2014 | 24956104 |
| molecular insights into x;bta5 chromosome rearrangements in the tribe antilopini (bovidae). | for a clade that includes antilope, gazella,nanger and eudorcas (antilopinae), x;bta5 translocation is a synapomorphy. using a combination of fluorescence in situ hybridization (fish) probes and polymerase chain reaction techniques, we provide (i) the first insight into the x;bta5 architecture which differs in the species under study: antilope cervicapra (genus antilope), gazella leptoceros (genus gazella) and nanger dama ruficollis (genus nanger), (ii) determination of interstitial satellite dn ... | 2012 | 22327909 |
| changes in habitat structure may explain decrease in reintroduced mohor gazelle population in the guembeul fauna reserve, senegal. | reintroduction is a widespread method for saving populations of endangered species from extinction. in spite of recent reviews, it is difficult to reach general conclusions about its value as a conservation tool, as authors are reluctant to publish unsuccessful results. the mohor gazelle is a north african gazelle, extinct in the wild. eight individuals were reintroduced in senegal in 1984. the population grew progressively, albeit slowly, during the first 20 years after release, but then declin ... | 2012 | 26487026 |
| heterozygosity-fitness correlations and inbreeding depression in two critically endangered mammals. | the relation among inbreeding, heterozygosity, and fitness has been studied primarily among outbred populations, and little is known about these phenomena in endangered populations. most researchers conclude that the relation between coefficient of inbreeding estimated from pedigrees and fitness traits (inbreeding-fitness correlations) better reflects inbreeding depression than the relation between marker heterozygosity and fitness traits (heterozygosity-fitness correlations). however, it has be ... | 2012 | 22897325 |
| high levels of dna fragmentation in spermatozoa are associated with inbreeding and poor sperm quality in endangered ungulates. | inbreeding is known to cause deleterious effects upon reproduction and survival, but its effects upon sperm dna integrity have not been examined. in the present study, we analyzed this relationship among three endangered ungulates: gazella cuvieri, gazella dama mhorr, and gazella dorcas neglecta. in addition, we examined whether levels of sperm dna fragmentation are associated with semen quality. the magnitude of sperm dna damage in the two species with high levels of inbreeding (g. cuvieri and ... | 2010 | 20505170 |
| coxiella burnetii abortion in captive dama gazelle (gazella dama) in the united arab emirates. | abstract: five cases of late-stage abortion in dama gazelle (gazella dama) occurred in the united arab emirates. histopathologic and molecular diagnostics found the abortions to be associated with coxiella burnetii infection. examination of the herd 6 mo later revealed a significant number of serologically positive animals but failed to detect the antigen in genital swabs. there are few reports in the literature of c. burnetii abortion in nondomestic ungulates and no published reports from the u ... | 2010 | 20722258 |
| serum concentrations of insulin-like growth factor-i and insulin-like growth factor binding protein-2 and -3 in eight hoofstock species. | the somatotropic axis, which includes growth hormone, insulin-like growth factor (igf)-i, and igf binding proteins (igfbp), is involved in the regulation of growth and metabolism. measures of the somatotropic axis can be predictive of nutritional status and growth rate that can be utilized to identify nutritional status of individual animals. before the somatotropic axis can be a predictive tool, concentrations of hormones of the somatotropic axis need to be established in healthy individuals. t ... | 2010 | 20853408 |
| use of a neuroleptic in assisted reproduction of the critically endangered mohor gazelle (gazella dama mhorr). | stress is a limiting factor in assisted reproduction in wild animals maintained in captivity and measures to reduce it should improve reproductive success. the effect of the long-acting neuroleptic (lan) perphenazine enanthate was assessed on ovarian stimulation for the recovery of immature oocytes from mohor gazelle (gazella dama mhorr) and their subsequent in vitro maturation, fertilization and embryo culture. the viability of embryos after transfer was also examined. perphenazine enanthate de ... | 2008 | 18606442 |
| in vitro oocyte maturation, fertilization and culture after ovum pick-up in an endangered gazelle (gazella dama mhorr). | the recovery of immature oocytes followed by in vitro maturation, fertilization and culture (ivmfc) allows the rescue of biological material of great genetic value for the establishment of genetic resource banks of endangered species. studies exist on sperm cryopreservation of endangered mohor gazelle (gazella dama mhorr), but no work has been carried out yet on oocyte collection, fertilization and culture in this or related species. the purpose of this study was to develop a protocol for ovaria ... | 2008 | 18022681 |
| output of gastrointestinal nematode eggs in the feces of captive gazelles (gazella dama mhorr, gazella cuvieri and gazella dorcas neglecta) in a semiarid region of southeastern spain. | feces from 62 captive african gazelles, including mhorr gazelles (gazella dama mhorr), cuvier's gazelles (gazella cuvieri), and dorcas gazelles (gazella dorcas neglecta), were examined over the course of a year to quantitate nematode egg excretion patterns. strongyloides sp. eggs appeared only in g. dama during the rainy season. trichostrongylidae egg excretion showed a marked seasonal variation, with very low levels during the dry and hot period, a finding that is probably attributable to hypob ... | 2006 | 17319122 |
| inbreeding and reproduction in endangered ungulates: preservation of genetic variation through the organization of genetic resource banks. | there is a constant increase in the number of species suffering marked reductions in population size. this reduction in size and the lack of genetic flow may lead to a decrease in genetic variability and to matings between close relatives (i.e. inbreeding) with an ensuing reduction in fitness. it is thus important to understand the mechanism underlying the deleterious effects of inbreeding and to develop reproductive biotechnologies that will allow the reduction of inbreeding depression by facil ... | 2006 | 16984472 |
| serum gamma-glutamyltransferase as a prognostic indicator of neonatal viability in nondomestic ruminants. | rapid assessment of immune status in neonatal ruminants of endangered species facilitates early intervention in cases of inadequate passive transfer of maternal immunoglobulins. serum gamma-glutamyltransferase (ggt) was used to evaluate suspected passive transfer status in 25 north indian muntjac (muntiacus muntjak vaginalis), 45 cretan goats (capra algagrus cretica), 20 white-lipped deer (cervus albirostris), 25 mhorr gazelles (gazella dama mhorr), and 31 soemmerring's gazelles (gazella soemmer ... | 2005 | 17323564 |
| transposition of the biceps tendon to reduce lateral scapulohumeral luxation in three species of nondomestic ruminant. | open reduction of lateral luxation of the scapulohumeral joint was performed in a mhorr gazelle (gazella dama mhorr), a southern pudu (pudu puda), and an alpine ibex (capra ibex ibex) by transposition of the biceps brachii tendon lateral to the greater tubercle of the humerus. the ibex had a very large greater tubercle that required a second osteotomy to allow successful lateral transfer of the tendon. although all three animals were non-weight bearing in the first 2-3 wk after surgery, ambulati ... | 2005 | 17323571 |
| periparturient increase in faecal egg counts in a captive population of mohor gazelle (gazella dama mhorr). | the objective of this study was to assess whether there was a periparturient rise in the faecal egg output of a population of north african gazelles (gazella dama mhorr) kept in captivity in almeria, southern spain. in one experiment faeces were collected from 47 female gazelles on three days in winter, in november and december 1995 and january 1996; in a second experiment faecal samples were collected from nine pregnant gazelles at weekly intervals from july 1996 to june 1997. the mean trichost ... | 2004 | 14758830 |
| endocrine correlates of sexual behavior in the mohor gazelle (gazella dama mhorr). | in this study, we quantitatively examined male sexual behavior in relation to fecal estrogen and progesterone concentrations in female mohor gazelles. we investigated the hypothesis that, during natural mating, males detect cues relating to the potential for successful conception and pregnancy. time series analysis revealed that males could detect the approach of estrus 2-3 days before female fecal estrogens and estrogen/progestagen (e/p) ratio reached their peak values. males also paid closer a ... | 2003 | 14613724 |
| [the stability of progesterone in feces of different wild animal species kept in a zoological garden]. | methodical investigations were carried out to monitor especially in what respect external factors (dry mass of faeces, time point of freezing, duration of storage of the frozen samples, multiple defrosting of the samples) influence the progesterone concentration of the faeces of several wild animal species (baringo giraffe, black rhinoceros, dama gazelle, mountain goat) living in a zoological garden. with reference to one animal species the dry mass of the faeces showed only small variations. th ... | 2002 | 12073499 |
| abomasal and small intestinal nematodes from captive gazelles in spain. | the abomasal and small intestinal helminth fauna of three species of captive gazelles (gazella dama mhorr, g. cuvieri and g. dorcas neglecta) kept in captivity in almería (southeast spain) have been studied, and the following species were identified: nematodirus spathiger, n. filicollis, n. helvetianus, camelostrongylus mentulatus, trichostrongylus vitrinus, t. probolurus, t. colubriformis, ostertagia ostertagi, o. harrisi, teladorsagia (ostertagia) circumcincta, and t. (ostertagia) davtiani. ca ... | 2001 | 11818055 |
| hormonal characterization of the reproductive cycle and pregnancy in the female mohor gazelle (gazella dama mhorr). | the oestrous cycles of seven captive mohor gazelles (gazella dama mhorr) were investigated. hormone profiles obtained from faecal samples collected each day from cyclic females indicated that the mean duration of the oestrous cycle was 18.62 +/- 0.26 days (range 16-22 days; n = 37 oestrous cycles). no inter-individual differences in the concentration of faecal progestagen metabolites excreted were observed, but mean faecal oestrogen excretion during both the luteal and inter-luteal phases of the ... | 2001 | 11570964 |
| use of computer-assisted sperm motility assessment and multivariate pattern analysis to characterize ejaculate quality in mohor gazelles (gazella dama mhorr): effects of body weight, electroejaculation technique and short-term semen storage. | subjective and objective semen assessments were performed on 18 male mohor gazelles (gazella dama mhorr). sperm motility assessments combined with sperm plasma membrane and acrosomal integrity evaluations were undertaken as part of a captive breeding programme. the primary objective was to test methodology for short-term preservation of gazelle semen for artificial insemination (storage in n-[tris(hydroxymethyl)methyl]-2-aminoethanesulphonic acid-tris diluent (test) for up to 96 h at 17 degrees ... | 2001 | 11467977 |
| a comparative study of ejaculate traits in three endangered ungulates with different levels of inbreeding: fluctuating asymmetry as an indicator of reproductive and genetic stress. | we studied three closely related species of endangered gazelles (gazella dorcas, gazella dama and gazella cuvieri) with different levels of inbreeding in order to determine at which intensities inbreeding influences ejaculate traits. we also examined whether fluctuating asymmetry (fa) is a reliable indicator of genetic as well as reproductive stress. our results show that, within each population, the individual coefficient of inbreeding is inversely related to ejaculate quality only in the speci ... | 2000 | 10853729 |
| sperm subpopulations in boar (sus scrofa) and gazelle (gazella dama mhorr) semen as revealed by pattern analysis of computer-assisted motility assessments. | the aim of this study was to test the suitability of "pattern analysis" for the exploration of data provided by computer-assisted semen analysis methods. data sets derived from the examination of boar sperm responses to bicarbonate and caffeine (measurements on 3208 spermatozoa) and from studies of semen cryopreservation in mohor gazelles (7278 spermatozoa) were reanalyzed. a nonhierarchical classification method was used to generate initial subgroups of spermatozoa (9 for boar, 13 for gazelle). ... | 1999 | 9858483 |
| on the reintroduction of the mhorr gazelle in tunisia and morocco. | the mhorr gazelle (gazella dama mhorr) became extinct in the wild in the 1960s. the current world zoo population amounts to some 240 animals, going back to only 12 founders. in a cooperate international operation mhorr gazelles of european zoo populations were successfully reintroduced to national parks and nature reserves in morocco and tunisia in the years 1990/1992. the genetical and ecological prerequisites as well as the breeding aspects are discussed. | 1998 | 9853318 |
| characteristics of the semen of three endangered species of gazelles (gazella dama mhorr, g. dorcas neglecta and g. cuvieri). | as part of a captive breeding programme for three species of endangered gazelles (gazella dama mhorr, g. dorcas neglecta and g. cuvieri) the semen parameters for each species were characterized. the volume of ejaculated semen varied widely within species (g. dama: 565-5569 microliters; g. dorcas: 0-1454 microliters; g. cuvieri: 50-1411 microliters), as did sperm concentration (g. dama: 14-1629 x 10(6) ml-1; g. dorcas: 197-2836 x 10(6) ml-1; g. cuvieri: 228-927 x 10(6) ml-1). sperm motility and v ... | 1998 | 9713374 |
| cardiopulmonary effects of carfentanil in dama gazelles (gazella dama). | sixteen (10 female, six male) captive-born dama gazelles (gazella dama) weighing 48 +/- 10 kg (mean +/- sd) were used to evaluate the cardiopulmonary effects of i.m. carfentanil and to validate the use of pulse oximetry in immobilized gazelles. carfentanil (18.4 +/- 2.2 micrograms/kg i.m.) produced rapid induction (6 +/- 3 min), moderate muscle relaxation, and a significant (p < 0.05) decrease in heart rate (87 +/- 12 beats/min) beginning 5 min following induction and continuing throughout the i ... | 1997 | 9279405 |
| oestrous synchronization, semen preservation and artificial insemination in the mohor gazelle (gazella dama mhorr) for the establishment of a genome resource bank programme. | gazella dama mhorr is an endangered species with an extant population of about 190 animals distributed between several zoos. semen was collected by electro-ejaculation from 12 adult males, and cryopreserved in test-yolk diluent containing 6% glycerol. the effects of the concentration of egg yolk (5%, 10% and 20%) and the presence or absence of sodium triethanolamine lauryl sulfate (equex) on sperm motion and acrosomal integrity after thawing were examined. increasing concentrations of egg yolk r ... | 1996 | 8981647 |
| an unusual gazella dama karyotype. | the chromosomes of a female gazelle (gazella dama) were investigated using gtg, rbg and c banding techniques. their banding patterns showed that autosomes are involved in a complex of four robertsonian translocations. | 1993 | 8215217 |
| hematologic and biochemical observations in gazella dama, g. dorcas and g. cuvieri. | 1. blood samples obtained from 114 animals of three species of the genus gazella (gazella dama, gazella dorcas and gazella cuvieri) were analyzed from hematology (osmotic fragility, red blood cells morphology and hemoglobin electrophoresis) and biochemical values (glucose-6-phosphate dehydrogenase, pyruvate kinase and glutathione reductase deficiencies and superoxide dismutase activity). 2. standard methods were used. hemoglobin polymorphism was found. 3. there was no abnormality in the osmotic ... | 1991 | 1769211 |
| cementoblastoma in a dama gazelle. | 1985 | 4077655 | |
| basic haematological values in antelopes--iii. the reduncinae and the antelopinae. | basic haematological values were measured in 50 individuals of five species falling under the subfamily reduncinae, including the mountain reedbuck (reduncula fulvorufula), the eastern waterback (kobus ellipsiprymnus ellipsiprymnus), the defassa waterbuck (kobus ellipsipyrmnus defassa), the lechwe waterbuck (kobus leche) and the lady gray's waterbuck (kobus megaceros) and in 45 animals of three species of the subfamily antelopinae, including the springbok (antidorcas marsupialis), the grant's ga ... | 1984 | 6149055 |
| adrenal cortical adenoma in a dama gazelle (gazella dama). | 1979 | 480521 |