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At least 19 recordsLinked to original sources
PubMed1985

[Cytogenetic study of Cercopithecus wolfi, Cercopithecus erythrotis and a hybrid Cercopithecus ascanius X Cercopithecus pogonias grayi].

The karyotypes of two species of Cercopithecus, C. wolfi and C. erythrotis, as well as that of a hybrid C. ascanius X C. pogonias grayi, are described and compared. The karyotype of C. erythrotis is similar to that of C. ascanius and C. cephus described previously. The karyotypes of C. wolfi and C. p. grayi differ by a single inversion. The karyotype of the hybrid shows that the two parental species differ by five rearrangements, three fissions and two inversions, an observation in agreement with our previous interpretation.

Animals↗
PubMed2004

New simian immunodeficiency virus infecting De Brazza's monkeys (Cercopithecus neglectus): evidence for a cercopithecus monkey virus clade.

Nearly complete sequences of simian immunodeficiency viruses (SIVs) infecting 18 different nonhuman primate species in sub-Saharan Africa have now been reported; yet, our understanding of the origins, evolutionary history, and geographic distribution of these viruses still remains fragmentary. Here, we report the molecular characterization of a lentivirus (SIVdeb) naturally infecting De Brazza's monkeys (Cercopithecus neglectus). Complete SIVdeb genomes (9,158 and 9227 bp in length) were amplified from uncultured blood mononuclear cell DNA of two wild-caught De Brazza's monkeys from Cameroon. In addition, partial pol sequences (650 bp) were amplified from four offspring of De Brazza's monkeys originally caught in the wild in Uganda. Full-length (9068 bp) and partial pol (650 bp) SIVsyk sequences were also amplified from Sykes's monkeys (Cercopithecus albogularis) from Kenya. Analysis of these sequences identified a new SIV clade (SIVdeb), which differed from previously characterized SIVs at 40 to 50% of sites in Pol protein sequences. The viruses most closely related to SIVdeb were SIVsyk and members of the SIVgsn/SIVmus/SIVmon group of viruses infecting greater spot-nosed monkeys (Cercopithecus nictitans), mustached monkeys (Cercopithecus cephus), and mona monkeys (Cercopithecus mona), respectively. In phylogenetic trees of concatenated protein sequences, SIVdeb, SIVsyk, and SIVgsn/SIVmus/SIVmon clustered together, and this relationship was highly significant in all major coding regions. Members of this virus group also shared the same number of cysteine residues in their extracellular envelope glycoprotein and a high-affinity AIP1 binding site (YPD/SL) in their p6 Gag protein, as well as a unique transactivation response element in their viral long terminal repeat; however, SIVdeb and SIVsyk, unlike SIVgsn, SIVmon, and SIVmus, did not encode a vpu gene. These data indicate that De Brazza's monkeys are naturally infected with SIVdeb, that this infection is prevalent in different areas of the species' habitat, and that geographically diverse SIVdeb strains cluster in a single virus group. The consistent clustering of SIVdeb with SIVsyk and the SIVmon/SIVmus/SIVgsn group also suggests that these viruses have evolved from a common ancestor that likely infected a Cercopithecus host in the distant past. The vpu gene appears to have been acquired by a subset of these Cercopithecus viruses after the divergence of SIVdeb and SIVsyk.

Amino Acid Sequence↗
PubMed2005

Frequent insectivory by two guenons (Cercopithecus lhoesti and Cercopithecus mitis) in the Kalinzu Forest, Uganda.

I investigated the feeding ecology of l'Hoest's monkeys (Cercopithecus lhoesti) and blue monkeys (Cercopithecus mitis) in the Kalinzu Forest, Uganda. Although forest guenons are generally thought to be frugivores or folivores, these two guenons spent a large proportion of their time feeding on invertebrates. The l'Hoest's monkey and the blue monkey spent as much as 66 and 50% of their time on insectivory, respectively. These proportions of time spent on invertebrate feeding are higher than those reported elsewhere for forest guenons. L'Hoest's monkeys mainly utilized the area near the ground for invertebrate feeding, while blue monkeys utilized the area around 20 m above the ground. It seemed that guenons have an ability to change their diet according to the environment.

Animals↗
PubMed1978

Identity of euchromatic bands from man to cercopithecidae (Cercopithecus aethiops, Cercopithecus sabaeus, Erythrocebus patas, and Miopithecus talapoin).

The karyotypes of four species of Cercopithecidae: Cercopithecus aethiops tantalus, C. sabaeus, Erythrocebus patas, and Miopithecus talapoin are analysed with nearly all the banding techniques. They are compared with each other, and with the karyotypes of the Baboon P. papio and with that of man. It can be concluded that the quasi-totality or the totality of the euchromatin is common to all, but has undergone structural rearrangements, generally detectable. The heterochromatin, defined by C-band staining, and late-replicating DNA, in contrast, appears very variable: In particular, E. patas has acquired very large heterochromatic segments. The significance of these modifications is discussed.

Animals↗
PubMed1982

Cytogenetic study of a Cercopithecus pogonias grayi x Cercopithecus mona mona hybrid.

The G- and C-banded karyotypes of hybrid born of the cross between a male Cercopithecus pogonias grayi (2 n = 72 XY) and a female C. mona mona (2 n = 68 XX) are reported. The chromosome number is 2 n = 70 and equals half the total number of parental chromosomes. A correlation between the hybrid karyotype and those of its parents is proposed. The typical autosomes of C. pogonia grayi are again found in the young hybrids.

Animals↗
PubMed1982

Cytogenetic study of Cercopithecus pogonias grayi x Cercopithecus ascanius katangae hybrids.

The G-banded karyotypes of a male and a female hybrid born of the cross between a Cercopithecus pogonias grayi (2 n = 72 XY) and a C. ascanius katangae (2 n = 66 XX) are reported. The constant chromosome number 2 n = 69 of both the male and female hybrids equals the arithmetic mean of the parental chromosome. A correlation between the hybrid karyotypes and those of their parents is proposed. The typical acrocentric autosomes of C. pogonias grayi are found again in the offspring.

Animals↗
PubMed1981

[Cytogenetics of Cercopithecus (mona) campbelli. Comparison with other cercopithecus species and man (author's transl)].

The karyotype of C. (mona) campbelli campbelli is described after applying various banding techniques. After comparing this karyotype with those of numerous other Cercopithecus species it becomes possible to situate C. (m.) c. campbelli in the phylogeny of the group. A comparison with the human karyotype, after high resolution banding, shows that both species differ by some forty rearrangements, essentially fissions and inversions. A fission of the chromosome homologous to the human no. 10 occurred in this taxon, thus reproducing a chromosome present in Prosimii and Lagomorpha (rabbit), which can be considered as a reverse mutation.

Animals↗
PubMed2005

Characterization of a novel vpu-harboring simian immunodeficiency virus from a Dent's Mona monkey (Cercopithecus mona denti).

We report the identification of a new simian immunodeficiency virus (SIV), designated SIVden, in a naturally infected Dent's Mona monkey (Cercopithecus mona denti), which was kept as pet in Kinshasa, capital of the Democratic Republic of Congo. SIVden is genetically distinct from the previously characterized primate lentiviruses. Analysis of the full-length genomic sequence revealed the presence of a vpu open reading frame. This gene is also found in the virus lineage of human immunodeficiency virus type 1 (HIV-1) and chimpanzee immunodeficiency virus (SIVcpz) and was recently described in viruses isolated from Cercopithecus nictitans, Cercopithecus mona, and Cercopithecus cephus. The SIVden vpu coding region is shorter than the HIV-1/SIVcpz and the SIVgsn, SIVmon, and SIVmus counterparts. Unlike Pan troglodytes schweinfurthii viruses (SIVcpzPts) and Cercopithecus monkey viruses (SIVgsn, SIVmon, and SIVmus), the SIVden Vpu contains the characteristic DSGXES motif which was shown to be involved in Vpu-mediated CD4 and IkappaBalpha proteolysis in HIV-1 infected cells. Although it harbors a vpu gene, SIVden is phylogenetically closer to SIVdeb isolated from De Brazza's monkeys (Cercopithecus neglectus), which lacks a vpu gene, than to Cercopithecus monkey viruses, which harbor a vpu sequence.

Amino Acid Sequence↗
PubMed2003

Identification of a new simian immunodeficiency virus lineage with a vpu gene present among different cercopithecus monkeys (C. mona, C. cephus, and C. nictitans) from Cameroon.

During a large serosurvey of wild-caught primates from Cameroon, we found 2 mona monkeys (Cercopithecus mona) out of 8 and 47 mustached monkeys (Cercopithecus cephus) out of 302 with human immunodeficiency virus (HIV)-simian immunodeficiency virus (SIV) cross-reactive antibodies. In this report, we describe the full-length genome sequences of two novel SIVs, designated SIVmon-99CMCML1 and SIVmus-01CM1085, isolated from one mona (CML1) and one mustached (1085) monkey, respectively. Interestingly, these viruses displayed the same genetic organization (i.e., presence of a vpu homologue) as members of the SIVcpz-HIV type 1 lineage and SIVgsn isolated from greater spot-nosed monkeys (Cercopithecus nictitans). Phylogenetic analyses of SIVmon and SIVmus revealed that these viruses were genetically distinct from other known primate lentiviruses but were more closely related to SIVgsn all across their genomes, thus forming a monophyletic lineage within the primate lentivirus family, which we designated the SIVgsn lineage. Interestingly, mona, mustached, and greater spot-nosed monkeys are phylogenetically related species belonging to three different groups of the genus Cercopithecus, the C. mona, C. cephus, and Cercopithecus mitis groups, respectively. The presence of new viruses closely related to SIVgsn in two other species reinforces the hypothesis that a recombination event between ancestral SIVs from the family Cercopithecinae is the origin of the present SIVcpz that is widespread among the chimpanzee population.

Amino Acid Sequence↗
PubMed2003

Dimensions of segmental bronchi of pulmonary lower lobes in humans and Cercopithecus aethiops.

The aim of the study was to determine the bronchial segmental tree dimensions of lower lobes in humans and Cercopithecus aethiops and to estimate the possible relations between them. The study was carried out on a group of 62 human cadavers (aged 20 to 60; 28 men, and 34 women) and 30 sexually mature corpses of Cercopithecus aethiops (14 male and 16 female individuals). The trachea and bronchi were swilled out, injected with duracryl and digested in hydrochloric acid. After washing out an exact model of the topographically unchanged bronchial tree was obtained. Those preparations were dried and the diameters of the segmental bronchi in the lower lobes of both lungs were measured. The statistical analysis was performed using the SAS system v. 6.11. Differences between groups were analyzed by ANOVA. If P < 0.05, differences between the mean values were considered statistically significant. In the studied material almost all measured values in Cercopithecus aethiops were higher in female individuals in contrast to the results obtained for humans. In both sexes of Cercopithecus aethiops medial and anterior basal bronchi have the biggest diameter in both sides, but in male and female humans posterior basal bronchus has the biggest diameter. Unlike humans, where the medial segments are small, the medial segments in Cercopithecus aethiops constitute a significant functional part of the lungs.

Adult↗
PubMed1997

Group size and group composition of the mona monkey (Cercopithecus mona) on the Island of Grenada, West Indies.

Cercopithecus, the genus of guenons, is the largest of the African primate genera, and yet more than half of the species belonging to this group have never been the focus of a long-term field study. In this paper, I present data on group size and composition for a previously unstudied population of guenons on the Caribbean island of Grenada. The mona monkey, Cercopithecus mona, was introduced to Grenada from Africa approximately 200-300 years ago. Two types of social groups were found for Cercopithecus mona on Grenada: all-male groups consisting of two to four individuals and bisexual groups containing 5-32 individuals. All-male groups of Grenada mona monkeys contained any combination of juveniles, subadults, and/or adults. All-male groups were a common occurrence on Grenada but have never been reported for African C. mona and have been reported only in two other forest Cercopithecus species. Bisexual groups appeared to consist of one adult male, one to six adult females, subadult females, and juveniles and infants of both sexes. Even though no more than one adult male was ever seen in each bisexual group of monas on Grenada, other males were heard giving copulation calls simultaneously with resident adult male loud calls, suggesting that other males occasionally infiltrate bisexual groups.

Animals↗
PubMed1990

Comparative analysis of the fragments of highly repeated DNA of Homo, Pan, Macaca and Cercopithecus.

In the present paper the restriction patterns of Homo, Pan troglodytes, Macaca fascicularis and Cercopithecus aethiops, obtained by digestion with Eco RI endonuclease, were compared. All these species showed two common bands at 0.3 and 0.6 Kb. In this region another band at 0.5 Kb was present in Macaca fascicularis and Cercopithecus aethiops. Furthermore Macaca fascicularis, Cercopithecus aethiops and Pan troglodytes showed a series of bands not present in humans. The distance matrix shows a strong similarity between Homo and Pan and a decreasing similarity with Macaca fascicularis and Cercopithecus aethiops. No intraspecific variability was observed.

Animals↗
PubMed1985

Significance of glycosidases and phosphatases in Cercopithecus and Macaca cells.

When selected ratios of different glycosidases and phosphatases from primary monkey kidney cells or from monkey kidney cell lines are presented graphically, characteristic patterns do evolve. Three different subtypes of Vero cells show similar glycosidase patterns. The Vero subtypes tested show glycosidase patterns that are closely similar to those of primary cells of Cercopithecus aethiops. Glycosidase patterns of BS-C-1 and CV-1 cells are less similar to those of primary Cercopithecus cells than are those of Vero cells. Primary kidney cells from Macaca cynomolgus show significantly different glycosidase patterns compared with those of different Cercopithecus cells. The distinct glycosidase patterns can be used to classify the tested cell lines in relation to each other.

Animals↗