Publications
| Title | Abstract | Year(sorted ascending) Filter | PMID Filter |
|---|
| transmission of experimental kuru to the spider monkey (ateles geoffreyi). | clinical signs and pathological changes characteristic of kuru in man and experimental kuru in chimpanzees were observed in two spider monkeys, ateles geoffreyi, after inoculation with brain tissue from a kuru-affected chimpanzee. the incubation period for one of the monkeys was 23 months, and 26 months for the other. | 1968 | 5687819 |
| susceptibility of ateles fusciceps, ateles geoffroyi and cebus capucinus monkeys to plasmodium vivax. | 1969 | 4893736 | |
| a comparative study of the activity patterns and behavior of alouatta villosa and ateles geoffroyi. | 1970 | 4985668 | |
| hematologic values of the black spider monkey (ateles fusciceps), red spider monkey (ateles geoffroyi), white face monkey (cebus capucinus), and black howler monkey (alouatta villosa). | 1971 | 4329310 | |
| two new herpesviruses from spider monkeys (ateles geoffroyi). | 1972 | 4338773 | |
| reproduction in two species of spider monkeys, ateles fusciceps and ateles geoffroyi. | 1973 | 4202565 | |
| studies on the primary structures of alpha and beta polypeptide chains of adult hemoglobin of the spider monkey (ateles geoffroyi). | 1973 | 4215720 | |
| transmissible drug resistance in shigella and salmonella isolated from pet monkeys and their owners. | during two dysentery outbreaks in primate pet owners, shigella and salmonella strains were isolated from the enteric flora. in both outbreaks the source of infection was traced to asymptomatic spider monkeys (ateles geoffroyi). the spider monkeys and their owners shed multiply drug-resistant shigella and salmonella serotypes. six of the nine bacterial strains isolated from the animals were multiply drug-resistant and capable of transferring antibiotic resistance patterns. | 1975 | 808621 |
| banding patterns of the chromosomes of ateles geoffroyi with description of two cases of pericentric inversion. | quinacrine and giemsa banding studies of the chromosomes of ateles geoffroyi permitted to establish a pattern for the species and revealed the presence of a pericentric inversion in two of the animals studied. | 1975 | 804559 |
| an analysis of adult social spacing tendencies and related social interactions in a colony of spider monkeys (ateles geoffroyi) at the san francisco zoo. | observations on adult interindividual spacing and social interactions for 13 spider monkeys (ateles geoffroyi) of an approximately 48 animal captive colony were made from mid-june through august 1972. in this analysis the interanimal distances, general activities, and social interactions per minute observation for each subject were compared for a sample of 7 sexually mature males and 6 sexually mature females. association tendencies between members of the same sex were significantly high as were ... | 1976 | 817988 |
| the unique kidney of the spider monkey (ateles geoffroyi). | among nonhuman primates, the renal anatomy of the spider monkey (ateles geoffroyi) is unique, as it is multipyramidal and multipapillary. renal function parameters (glomerular filtration rate, renal plasma flow, and concentrating ability) are compared to man and other primates. the kidneys of the spider monkey are similar both anatomically and functionally to man. | 1977 | 412972 |
| social organization and food resources availability in primates: a socio-bioenergetic analysis of diet and disease hypotheses. | data obtained during a field study of two species of nonhuman primates (alouatta villosa and ateles geoffroyi) living in the tikal national park in guatemala are used to suggest an answer to the question: to what extent is the existence of a particular form of social organization (group size, structure, and composition) an indication of the amount of energy in the form of food resources available to animals in a particular habitat? seven researchers working in teams spent 2,318 hours in the fiel ... | 1977 | 403771 |
| the chromosomal location of rdna in selected lower primates. | hybridization in stiu was used to identify the chromosomes that carry rdna in representative lower primates, including the baboons, papio cynocephalus and papio hamadryas; the colobus monkey, colobus polykomos; the tree shrew, tupaia glis; the lemur, lemur fulvis; the saki, pithecia pithecia; the marmoset, saguinus nigricollis, and the spider monkey, ateles geoffroyi. the marker chromosome, common to the cercopithecines studied to date, carries the rdna in the baboons. another marker chromosome ... | 1977 | 414888 |
| acute gastric dilatation and rickets in a pet spider monkey (ateles geoffroyi). | 1978 | 103273 | |
| locomotion and posture in ateles geoffroyi and ateles paniscus. | the locomotor and postural behavior of ateles geoffroyi and ateles paniscus was studied in panama and surinam. ateles locomotion can be divided into five patterns on the basis of limb usage: quadrupedal walking and running, suspensory locomotion, climbing, bipedalism and leaping. the first three are commonly used in both locomotion during travel and locomotion during feeding, but climbing (especially 'horizontal climbing') is the most important pattern during feeding. most ateles locomotion take ... | 1978 | 720997 |
| intraocular granulomas associated with tuberculosis in primates. | intraocular granulomas associated with tuberculosis were observed in 2 subhuman primates (ateles geoffroyi and macaca mulatta). bacterial cultures from lung tissues at the time of necropsy confirmed the presence of mycobacterium bovis and m tuberculosis, respectively. the absence of generalized clinical signs in spite of systemic dissemination of the organisms in these cases and the public health significance of tuberculous infections emphasize the importance of proper observation and diagnostic ... | 1981 | 6799470 |
| the structure of the vomeronasal organ and nasopalatine ducts in aotus trivirgatus and some other primate species. | a vomeronasal organ and patent nasopalatine ducts were found in adult specimens of aotus trivirgatus, arctocebus calabarensis, ateles geoffroyi and saguinus fuscicollis. the vomeronasal complex appeared to be functional except in ateles. however, the relative size of the organ in the platyrrhini is much reduced compared to that in prosimians. the possible role of the organ in mediating neuroendocrine processes in primates is discussed. | 1984 | 6425250 |
| some observations on the present distribution and conservation of alouatta and ateles in southern mexico. | some information on the past and present distribution of alouatta and ateles in southern mexico and on the impact of habitat destruction on their future existence is presented. three surveys of primate populations and forest habitats were carried out between 1981 and 1983 in southeastern mexico. rapid destruction of the forest is reducing the number of forested areas where alouatta and ateles can exist and co-occur. illegal hunting of the two primates also contributes to their rapid decline. alo ... | 1984 | 32131562 |
| a large allantoic sac in the placenta of the spider monkey ateles geoffroyi. | 1985 | 4070181 | |
| nucleotide sequence, evolution, and expression of the fetal globin gene of the spider monkey ateles geoffroyi. | the single gamma-globin gene of the new world spider monkey ateles geoffroyi is similar to other primate genes of the beta-globin gene cluster ("beta-like" globin genes). the number of nonsynonymous nucleotide substitutions between the coding regions of ateles and other primate gamma-globin genes suggests that the platyrrhine and catarrhine evolutionary lines diverged approximately equal to 40 million years ago, an estimate reasonably consistent with the fossil record. however, the number of syn ... | 1985 | 2413451 |
| analysis of primate dental microwear using image processing techniques. | this paper introduces fourier transformation as a rapid, replicable means for characterizing and distinguishing patterns of microscopic wear on primate teeth. the two-dimensional power spectra obtained from numerical fourier transformation are shown to be different between two test patterns, one of which is composed of linear features and the other of randomly-spaced dots. a comparison is made, using fourier transformation, of dental microwear patterns of small samples of two primate species, at ... | 1987 | 3616563 |
| the spider monkey psi eta-globin gene and surrounding sequences: recent or ancient insertions of lines and sines? | a phylogenetic comparison of the psi eta-globin dna sequence of the spider monkey (ateles geoffroyi) to orthologous sequences from other primates provides evidence for an evolutionarily recent (less than 17 million years ago (mya] insertion of a truncated l1 line (long interspersed repetitive element). an alu sine (short interspersed element), found 3 kb downstream of the poly(a) addition site, arose less than 40 mya subsequent to the divergence of platyrrhinies (new world monkeys) from catarrhi ... | 1988 | 2852163 |
| the structure and evolution of the spider monkey delta-globin gene. | we have isolated the delta-globin gene of the new-world spider monkey, ateles geoffroyi, and compared its nucleotide sequence with those of other primate delta- and beta-globin genes. among primate delta-globin genes, the rate of nonsynonymous substitutions is much less than the rate of synonymous substitutions. this suggests that primate delta-globin genes may remain under evolutionary conservation, perhaps because hemoglobin a2 has an as yet unknown physiological importance. | 1988 | 2833675 |
| spider monkey home ranges: a comparison of radio telemetry and direct observation. | the ranging patterns of two male and five female spider monkeys (ateles geoffroyi) were studied with the use of radio telemetry in santa rosa national park, costa rica. the average size of a spider monkey home range was 62.4 hectares; however, range size varied with sex, and, for females, with the presence of a dependent infant. the probability of encountering a radio-collared spider monkey in a three-hour search using radio telemetry (0.91) was much greater than using a visual search (0.20), an ... | 1988 | 31968876 |
| tropical rain forest conversion and perspectives in the conservation of wild primates (alouatta and ateles) in mexico. | the original distribution of the tropical rain forest and of the populations of alouatta palliata, al. pigra, and the two subspecies of ateles geoffroyi in southern mexico have been reduced by at least 90% in the last 40 years as a result of conversion of natural habitat to pasture and agricultural fields. this dramatic conversion has been caused mainly by the rapid growth of the human population in the southern states of the country. in the region of los tuxtlas in southern veracruz, where the ... | 1988 | 31968915 |
| spider monkey sleeping sites: use and availability. | the behavior of spider monkeys (ateles geoffroyi) at sleeping sites and the characteristics of these sites were studied in santa rosa national park, costa rica. the spider monkeys tended to congregate just prior to dusk at a number of sleeping sites which were repeatedly used (81.6%), but occasionally they slept in trees which were only used once (18.4%). all of the regularly used sleeping trees were not used concurrently, but rather, there was a rotation between sites. in general, males were no ... | 1989 | 31964046 |
| multiple central place foraging by spider monkeys: travel consequences of using many sleeping sites. | central place foraging models assume that animals return to a single central place such as a nest, burrow, or sleeping site. many animals, however choose between one of a limited number of central places. such animals can be considered multiple central place foragers (mcpf), and such a strategy could reduce overall travel costs, if the forager selected a sleeping site close to current feeding areas. we examined the selection of sleeping sites (central places) by a community of spider monkeys (at ... | 1989 | 28313485 |
| positional behavior in saimiri boliviensis and ateles geoffroyi. | positional behavior, associated context, and substrate use in ateles geoffroyi and saimiri boliviensis were quantified using instantaneous focal animal sampling and a hierarchically organized nomenclature to describe posture and locomotion. this paper then examines behavioral predictions derived from pseudo-behavioral locomotor classifications, multivariate morphometric studies, and studies of the behavioral consequences of body size. the principal interspecific contrasts include (1) the superio ... | 1990 | 2399959 |
| ecological constraints on group size in three species of neotropical primates. | the foraging strategies and association patterns of 3 species of primates (ateles geoffroyi, alouatta palliata, cebus capucinus) were studied over a 5-year period. the objective of the study was to provide a quantitative test of the hypothesis that the size, density and distribution of food resources influence the size of animal groups. in examining the assumptions of this hypothesis, it was shown that these primates used resources that occurred in patches, depleted the patches through their use ... | 1990 | 2394411 |
| a coprological survey of parasites of wild mantled howling monkeys, alouatta palliata palliata. | fecal samples from 155 mantled howling monkeys (alouatta palliata palliata) examined at centro ecologico la pacifica, guanacaste province, costa rica, revealed 75 (48%) had parasitic infections. a sampling of nine howling monkeys from santa rosa national park. costa rica indicated only one infected animal (11%). only three of 19 (16%) spider monkeys (ateles geoffroyi) also from santa rosa were infected. controrchis biliophilus, trypanoxyuris minutus, unidentified strongylid eggs and isospora sp. ... | 1990 | 2250334 |
| invasive amebiasis in a spider monkey (ateles geoffroyi). case report and a short review of the literature of amebiasis in non-human primates. | a spider monkey (ateles geoffroyi) studied at the san juan de aragon zoo died with symptoms of amoebic dysentery verified by coprologic investigation of the parasite, his female partner was cured with conventional antiamoebic treatment. at autopsy widespread ulcerations in the colon and multiple liver abscesses were found, containing trophozoites of entamoeba histolytica. both lesions were identical to those observed in human amoebiasis. a short review of the literature in nonhuman primates infe ... | 1991 | 1819979 |
| field methods for capture and measurement of three monkey species in costa rica. | a total of 54 free-ranging monkeys were captured and marked in santa rosa national park, costa rica, during may 1985, and an additional 17 were captured during march 1986. the animals were darted using a blowpipe or a co2 gun. the drugs used were ketaset, sernylan and telazol. ketaset was effective for cebus capucinus but unsuccessful for alouatta palliata and ateles geoffroyi. sernylan was successful for a. geoffroyi and a. palliata but is no longer commercially available. telazol proved to be ... | 1991 | 1786909 |
| fetal recruitment of anthropoid gamma-globin genes. findings from phylogenetic analyses involving the 5'-flanking sequences of the psi gamma 1 globin gene of spider monkey ateles geoffroyi. | we determined the nucleotide sequence of a 2.5 kb dna fragment (1 kb is 10(3) base-pairs) that includes exon 1, intron 1 and about 1.4 kb of 5'-flanking dna of the spider monkey gamma 1-globin pseudogene locus and compared this sequence to its homologous from other primates and rabbit. this region of the gamma 1 locus of spider monkey still retains conserved regulatory elements, suggesting that it became a pseudogene late in new world monkey phylogeny. in the 250 base-pair region immediately 5' ... | 1992 | 1569563 |
| medical management of inflammatory bowel disease in a spider monkey. | inflammatory bowel disease was diagnosed in a 3-year-old, captive-born, hand-raised, female spider monkey (ateles geoffroyi). the diagnosis was based on clinical signs, positive-contrast radiographic series, endoscopy, histologic appearance of intestinal biopsy specimens, and the monkey's response to treatment. treatment consisted of oral administration of prednisone, sulfasalazine, and trimethoprim-sulfamethoxazole. supportive care included a bland diet and an electrolyte solution given free ch ... | 1992 | 1351893 |
| chromosome polymorphism in ateles geoffroyi (cebidae; primates; mammalia). | the karyotype of ateles geoffroyi (cebidae; primates; mammalia) was studied using g- and c-banding techniques, and standardized idiograms are proposed. a polymorphism of chromosome 3 due to a pericentric inversion has been identified for the first time. genetic analysis of this polymorphism showed mendelian inheritance. | 1992 | 24201504 |
| kinesiological characteristics of vertical climbing in ateles geoffroyi and macaca fuscata. | 1993 | 8206421 | |
| cranial growth and growth dimorphism in ateles geoffroyi. | with the exception of the work of schultz (1960), cranial growth in ateles is not well documented. this paper describes the results of a detailed quantitative study of cranial ontogeny in male and female ateles geoffroyi. using euclidean distance matrix analysis (edma), local areas of form change due to growth within spider monkey crania are identified. we found substantial change local to the zygomatic region in the face, identified mediolaterally directed changes in the palate, detected relati ... | 1993 | 8291622 |
| play as physical flexibility training in five ceboid primates. | instantaneous focal animal sampling of positional behavior (posture and locomotion) during the play and nonplay of adults and juveniles of 5 ceboid monkeys (alouatta palliata, ateles geoffroyi, cacajao calvus, cebus capucinus, and saimiri boliviensis) in an optimal design field study of the function of play as physical flexibility training produced a sample of 98,261 observations. analyses of 67 distinct modes of positional behavior demonstrated that significantly enhanced rates of suspension an ... | 1994 | 7924251 |
| the value of radio tracking in the study of neotropical rain forest monkeys. | although radio tracking has been used increasingly in primate field studies over the past 15 years, some primatologists have been reluctant to use it. we present data that demonstrate benefits of radio tracking in the study of rain forest primates. data were collected during an ecological study of ateles geoffroyi and cebus capucinus in hilly, dense rain forest habitat with poor visibility, in northeastern costa rica. we show that radio tracking decreased search time for both species, which led ... | 1994 | 32070076 |
| interbirth interval variation in three sympatric species of neotropical monkey. | relatively few papers have focused on interbirth intervals in primates, even though the spacing between births is one of the primary determinants of female reproductive success in long-lived mammals. we present life history data from a ten-year field study of costa rican capuchins (cebus capucinus), howlers (alouatta palliata), and spidei monkeys (ateles geoffroyi). analyses of intraspecific variability found no significant differences attributable to individual variation in age, parity, weight, ... | 1995 | 32005049 |
| comparative and functional myology of the prehensile tail in new world monkeys. | the caudal myology of prehensile-tailed monkeys (cebus apella, alouatta palliata, alouatta seniculus, lagothrix lagotricha, and ateles paniscus) and nonprehensile-tailed primates (eulemur fulvus, aotus trivirgatus, callithrix jacchus, pithecia pithecia, saimiri sciureus, macaca fascicularis, and cercopithecus aethiops) was examined and compared in order to identify muscular differences that correlate with osteological features diagnostic of tail prehensility. in addition, electrophysiological st ... | 1995 | 7595958 |
| manual laterality in spider monkeys (ateles geoffroyi) solving visually and tactually guided food-reaching tasks. | the purpose of this study was to assess the occurrence of manual laterality in ateles geoffroyi and in particular to test the influence of visual and tactual control on preferential hand use. thirteen spider monkeys were presented with three different food-reaching tasks and assessed for hand preferences with a minimum of 100 reaches per animal. in all three tasks a significant lateral bias towards use of the left hand at the group level was found. performance in visually and tactually guided re ... | 1996 | 8954249 |
| gustatory thresholds for food-associated sugars in the spider monkey (ateles geoffroyi). | the purpose of this study was to determine gustatory thresholds for five different food-associated sugars in ateles geoffroyi. using a two-bottle test, three adult spider monkeys were found to significantly prefer concentrations as low as 3 mm sucrose, 15 mm fructose, 20 mm glucose, and 10 mm lactose over tap water. maltose was significantly discriminated down to 20 mm with individual animals showing either a preference or an aversion, or an inverted u-shaped function of preference toward higher ... | 1996 | 31918499 |
| mapping chromosomal homology between humans and the black-handed spider monkey by fluorescence in situ hybridization. | we hybridized human chromosome-specific dna probes to metaphases of the new world monkey ateles geoffroyi to map the chromosomal homology between these two species. in the haploid ateles geoffroyi karyotype the total number of signals was 51 for the 22 human autosomal probes used. compared with old world monkeys, the number of translocations found in the black-handed spider monkey karyotype was quite striking. the majority of these translocations are apparently robertsonian and no reciprocal tra ... | 1997 | 9451952 |
| can spider monkeys (ateles geoffroyi) discriminate vocalizations of familiar individuals and strangers? | in a field experiment, tape-recorded vocalizations of spider monkeys (ateles geoffroyi) were played back to investigate whether individuals were able to discriminate between group members and strangers. monkeys responded remarkably similarly in the two cases, with no significant difference found between the numbers of calls given by an individual, or the types of call given. however, a group was more likely to give some vocal reaction when hearing a stranger's call than when hearing one from an ... | 1997 | 9360309 |
| stable isotope ratios indicate diet and habitat use in new world monkeys. | this paper demonstrates the use of stable isotope ratios of carbon and nitrogen in animal tissue for indicating aspects of species behavioral strategy. we analyzed hair from individuals representing four species of new world monkeys (alouatta palliata, the mantled howler; ateles geoffroyi, the spider monkey; cebus capucinus, the capuchin; and brachyteles arachnoides, the woolly-spider monkey or muriqui) for delta 13c and delta 15n using previously developed methods. there are no significant diff ... | 1997 | 9185952 |
| genetic relatedness and alloparental behaviour in a captive group of spider monkeys (ateles geoffroyi). | 1997 | 9170642 | |
| variability of a vestigial structure: first metacarpal in colobus guereza and ateles geoffroyi. | a tenet of evolutionary theory is that, under conditions of stabilizing selection, phenotypic variability is inversely related to selection intensity. correspondingly, a nonfunctional, vestigial structure is expected to be highly variable relative to its functional homologue. this study tests the hypothesis that species with a vestigial pollex, colobus guereza and ateles geoffroyi, have a first metacarpal whose length is both highly variable relative to, and poorly correlated with, the lengths o ... | 1997 | 28565353 |
| positional behavior and vertebral morphology in atelines and cebines. | atelines are of particular interest to primate evolutionary studies because they converge with hominoids in postcranial anatomy, including the vertebral column. currently, our understanding of ateline vertebral morphology is limited to mainly qualitative descriptions and functional interpretations based on general categories of positional behavior. even less is known about the vertebrae of other platyrrhines. this study more closely examines vertebral form and function in atelines and cebines by ... | 1998 | 9545076 |
| laterality in the use of the prehensile tail in the spider monkey (ateles geoffroyi). | the purpose of this study was to assess the occurrence of lateral biases in the use of the prehensile tail in ateles geoffroyi. 24 spider monkeys were presented with three food-reaching tasks designed to differ in the precision of motor control needed for successful food retrieval and assessed for lateral preferences in tail use with a minimum of 50 caudal reaches per animal and task. highly lateralized tail use was found in 16 animals, distributed almost equally between left- and right-preferen ... | 1998 | 9533998 |
| the menstrual cycle of the spider monkey (ateles geoffroyi). | the ovarian cycles of four adult female spider monkeys (ateles geoffroyi) were followed daily throughout 30 days by means of vaginal swabs and blood samplings. cytological analyses of the vaginal swabs and radioimmunoassay determination of the daily levels of estradiol-17 beta (e2) and progesterone (p4) wer done in order to classify the kind of ovarian cycle of this species. our results show that ateles geoffroyi females display menstrual cycles of about 24 days on average. by comparison with th ... | 1998 | 9519238 |
| isolation of a hepadnavirus from the woolly monkey, a new world primate. | hepatitis b virus (hbv) infections are a major worldwide health problem with chronic infections leading to cirrhosis and liver cancer. viruses related to human hbv have been isolated from birds and rodents, but despite efforts to find hepadnaviruses that infect species intermediate in evolution between rodents and humans, none have been described. we recently isolated a hepadnavirus from a woolly monkey (lagothrix lagotricha) that was suffering from fulminant hepatitis. phylogenetic analysis of ... | 1998 | 9576957 |
| genetically engineered mengo virus vaccination of multiple captive wildlife species. | encephalomyocarditis virus (emcv), has caused the deaths of many species of animals in zoological parks and research institutions. the audubon park zoo, (new orleans, louisiana, usa) attempted vaccination of several species with a killed emcv vaccine with mixed results. this paper reports an attempt at vaccination against emcv using a genetically engineered, live attenuated mengo virus (vmc0) at the audubon park zoo and miami metro zoo, (miami, florida, usa) from december 1996 to june 1997. seve ... | 1999 | 10231768 |
| taste difference thresholds for sucrose in two species of nonhuman primates. | the purpose of this study was to determine taste difference thresholds for sucrose in frugivorous spider monkeys and omnivorous baboons. using a two-bottle preference test of brief duration, we presented four ateles geoffroyi and four papio hamdryas anubis with six different reference concentrations (rcs) of 25, 50, 100, 200, 300, and 400 mm sucrose and tested their ability to discriminate these from lower concentrations of this carbohydrate. the just noticeable differences (jnds), expressed as ... | 1999 | 10333434 |
| habitat use, population density and subgrouping pattern of the yucatan spider monkey (ateles geoffroyi yucatanensis) in quintana roo, mexico. | 1999 | 10050069 | |
| fluorescence in situ hybridization (fish) maps chromosomal homologies between the dusky titi and squirrel monkey. | the platyrrhini are one of the most karyologically derived groups of primates and the evolution of their karyotypes is far from understood. the identification of the origin and direction of chromosome rearrangements will contribute to a better understanding of new world monkey phylogeny, taxonomy, and evolution. we mapped homology and identified translocations in the chromosomes of the dusky titi monkey (callicebus moloch, 2n = 50) and the squirrel monkey (saimiri sciureus, 2n = 44) by fluoresce ... | 2000 | 10676707 |
| fur rubbing behavior in free-ranging black-handed spider monkeys (ateles geoffroyi) in panama. | members of the population of black-handed spider monkeys (ateles geoffroyi) on barro colorado island, panama, use the leaves of three rutaceae species in a behavior that resembles fur rubbing in the white faced capuchin (cebus capucinus). this behavior has not been reported from other sites where ateles has been studied. during more than 1,200 hours of observation, 30 episodes of this behavior were recorded ad libitum. adult males engage in this behavior more than adult females. season did not i ... | 2000 | 10902669 |
| gustatory responsiveness to food-associated acids in the spider monkey (ateles geoffroyi). | the gustatory responsiveness of four adult spider monkeys to five food-associated acids was assessed in two-bottle preference tests of brief duration (3 min). the animals were given the choice between a 30 mm sucrose solution and defined concentrations of citric acid, ascorbic acid, malic acid, acetic acid, or tannic acid dissolved in a 30 mm sucrose solution. with this procedure,ateles geoffroyi was found to significantly discriminate concentrations as low as 5 mm ascorbic acid, citric acid, an ... | 2000 | 30545173 |
| fecal analysis of ovarian cycles in female black-handed spider monkeys (ateles geoffroyi). | an enzyme immunoassay (eia) was applied to characterize the reproductive endocrinology of adult female black-handed spider monkeys (ateles geoffroyi). analysis of paired urine and fecal samples, collected from two females housed at san diego zoo, confirmed that the eias employed provided quantitative measurements of ovarian sex steroid hormones. fecal metabolite levels were significantly correlated with those in urine, confirming that feces are a valid source of steroid metabolites in this speci ... | 2001 | 11376446 |
| a census of mammal populations in punta leona private wildlife refuge, costa rica. | population sizes of six mammal species were estimated using the king method during the late dry season (march) of 1996 in the punta leona private wildlife refuge, costa rica. the white-faced monkey (cebus capucinus), coati (nasua narica) and nine-banded armadillo (dasypus novemcinctus) with 148, 46, and 8 sighted individuals, respectively, demonstrated the largest populations in the refuge. the central american spider monkey (ateles geoffroyi), tamandua anteater (tamandua mexicana), and variegat ... | 2002 | 12947599 |
| telomere biology and cellular aging in nonhuman primate cells. | to determine how cellular aging is conserved among primates, we analyzed the replicative potential and telomere shortening in skin fibroblasts of anthropoids and prosimians. the average telomere length of the new world primates ateles geoffroyi (spider monkey) and saimiri sciureus (squirrel monkey) and the old world primates macaca mulatta (rhesus monkey), pongo pygmaeus (orangutan), and pan paniscus (pigmy chimpanzee) ranged from 4 to 16 kb. we found that telomere shortening limits the replicat ... | 2002 | 11777339 |
| sperm quality differences between the rainy and dry seasons in captive black-handed spider monkeys (ateles geoffroyi). | the present work provides an assessment of sperm measures (concentration, motility, viability, etc.) of three black-handed spider monkeys (ateles geoffroyi) during the rainy and dry seasons in mexico city, as well as an evaluation of the between-subjects variability of sperm quality. twenty samples obtained by rectal electroejaculation and digested with trypsin were evaluated. the results showed that during the dry season (n = 9) the semen samples were of better quality than those obtained durin ... | 2002 | 11977125 |
| variability of metapodials in primates with rudimentary digits: ateles geoffroyi, colobus guereza, and perodicticus potto. | a tenet of evolutionary theory is that, within a species, phenotypic variability is inversely related to the intensity of stabilizing selection. a corollary is that a rudimentary or vestigial structure should be highly variable. this relationship between rudimentation and variability, however, may simply be part of a continuum, as several studies have shown that variability and size of a structure are inversely related. this study tests whether the first metacarpal (mc1) in ateles geoffroyi and ... | 2002 | 11842399 |
| olfactory sensitivity for aliphatic esters in spider monkeys (ateles geoffroyi). | using a conditioning paradigm, the authors investigated the olfactory sensitivity of 3 spider monkeys (ateles geoffroyi) for a homologous series of aliphatic esters (ethyl acetate to n-octyl acetate) and isomeric forms of some of these substances. with all odorants, the monkeys significantly discriminated concentrations below 1 ppm from the odorless solvent, and in several cases, individual monkeys even demonstrated thresholds below 1 ppb. the results showed spider monkeys to have a high olfacto ... | 2003 | 14674835 |
| primates as pets in mexico city: an assessment of the species involved, source of origin, and general aspects of treatment. | the large human populations in cities are an important source of demand for wildlife pets, including primates, and not much is known about the primate species involved in terms of their general origin, the length of time they are kept as pets, and some of the maintenance problems encountered with their use as pets. we report the results of a survey conducted in mexico city among primate pet owners, which was aimed at providing some of the above information. we used an ethnographic approach, and ... | 2003 | 14582127 |
| [ecological affinity and current distribution of primates (cebidae) in campeche, mexico]. | we carried out surveys realized field work from march to september 2000 to get the current distribution of cebids in the state of campeche, mexico. based on interviews and direct observations. we defined the distribution of ateles geoffroyi yucatanensis and alouatta pigra and we documented the first time localities where allouata palliata is found in the state. we made distributional maps of each species using vegetation overlays from inventario nacional forestal (inv for) and each point documen ... | 2003 | 15162751 |
| successful acquisition of an olfactory discrimination paradigm by spider monkeys, ateles geoffroyi. | the present study demonstrates that an operant conditioning paradigm-originally designed for assessing olfactory performance in an old world primate, the pigtail macaque-can successfully be adapted for use with a new world primate, the spider monkey. using a task based on a food-rewarded, two-choice discrimination of simultaneously presented odor stimuli, ateles geoffroyi is capable of learning to discriminate between objects on the basis of odor cues. moreover, animals could readily transfer to ... | 2003 | 12576131 |
| construction and characterization of bacterial artificial chromosome library of black-handed spider monkey (ateles geoffroyi). | the large-insert genomic dna library is a critical resource for genome-wide genetic dissection of target species. we constructed a high-redundancy bacterial artificial chromosome (bac) library of a new world monkey species, the black-handed spider monkey (ateles geoffroyi). a total of 193 152 bac clones were generated in this library. the average insert size of the bac clones was estimated to be 184.6 kb with the small inserts (50-100 kb) accounting for less than 3% and the non-recombinant clone ... | 2004 | 15060576 |
| survey of black howler (alouatta pigra) and spider (ateles geoffroyi) monkeys in the mayan sites of calakmul and yaxchilán, mexico and tikal, guatemala. | surveys of populations of spider and howler monkeys were conducted at the mayan sites of calakmul and yaxchilán, mexico and tikal, guatemala. the forests in which these sites are found are part of the largest landmass of tropical rain forests present in mesoamerica, encompassing about 4 million ha. triangulation of monkey vocalization combined with ground surveys was used to determine the presence of howler and spider monkey groups. howler monkey mean troop size at these sites varied from 6.6+/- ... | 2004 | 14586803 |
| distribution, ecology, life history, genetic variation, and risk of extinction of nonhuman primates from costa rica. | we examined the association between geographic distribution, ecological traits, life history, genetic diversity, and risk of extinction in nonhuman primate species from costa rica. all of the current nonhuman primate species from costa rica are included in the study; spider monkeys (ateles geoffroyi), howling monkeys (alouatta palliata), capuchins (cebus capucinus), and squirrel monkeys (saimiri oerstedii). geographic distribution was characterized accessing existing databases. data on ecology a ... | 2004 | 17361561 |
| patterns of behavior across reproductive states of free-ranging female black-handed spider monkeys (ateles geoffroyi). | reports on the behavior of spider monkeys (genus ateles) describe a suite of 5-6 behaviors that are indicative of an estrous female. this study presents hormonal data as an independent measure of reproductive state to determine if these behaviors are associated with any particular reproductive state or stage of the ovarian cycle. fecal samples collected from 6 free-ranging female black-handed spider monkeys (ateles geoffroyi) over the course of 11 months were assayed for estrogen (e1c) and proge ... | 2004 | 15160369 |
| effect of polymorphic colour vision for fruit detection in the spider monkey ateles geoffroyi, and its implications for the maintenance of polymorphic colour vision in platyrrhine monkeys. | most platyrrhine monkeys have an x-linked tri-allelic polymorphism for medium and long wavelength (m/l) sensitive cone photopigments. these pigments' sensitivity maxima (lambdamax) range from 535 to 562 nm. all animals also have an autosomally coded short-wavelength-sensitive (s) cone pigment. in populations with three m/l alleles there are six different colour vision phenotypes. heterozygous females have trichromatic colour vision, while males and homozygous females are dichromats. the selectiv ... | 2004 | 15184518 |
| expansion and divergence of the gh locus between spider monkey and chimpanzee. | growth hormone (gh) has been previously described as showing distinct evolutionary stories between primates and other mammals. a burst of changes and successive amplification events took place in the primate lineage giving rise to a multigene family in the three anthropoidea lineages. polymerase chain reaction (pcr) was used to obtain the genes and the intergenic regions comprising the gh loci of the spider monkey (ateles geoffroyi), a new-world primate, and of the chimpanzee (pan troglodytes), ... | 2004 | 15246530 |
| astronomical and meteorological parameters and rest-activity rhythm in the spider monkey ateles geoffroyi. | all animals including primates show regular variations in their behavioural activities and physiological functions. in numerous species diel, ultradian, infradian, annual and/or lunar rhythms have been established; however, the use of the focal sampling method does not provide information on hour-to-hour nor day-to-day variations. in behavioural field studies dealing with primate activity rhythms and their modulation by environmental variables the possible dual, synchronizing and/or masking effe ... | 2004 | 15501497 |
| color-vision polymorphism in wild capuchins (cebus capucinus) and spider monkeys (ateles geoffroyi) in costa rica. | new world monkeys are unique in exhibiting a color-vision polymorphism due to an allelic variation of the red-green visual pigment gene. this makes these monkeys excellent subjects for studying the adaptive evolution of the visual system from both molecular and ecological viewpoints. however, the allele frequencies of the pigments within a natural population have not been well investigated. as a first step toward understanding the relationship between vision and behavior, we conducted color-visi ... | 2005 | 16342069 |
| phylogenetic inferences of atelinae (platyrrhini) based on multi-directional chromosome painting in brachyteles arachnoides, ateles paniscus paniscus and ateles b. marginatus. | we performed multi-directional chromosome painting in a comparative cytogenetic study of the three atelinae species brachyteles arachnoides, ateles paniscus paniscus and ateles belzebuth marginatus, in order to reconstruct phylogenetic relationships within this platyrrhini subfamily. comparative chromosome maps between these species were established by multi-color fluorescence in situ hybridization (fish) employing human, saguinus oedipus and lagothrix lagothricha chromosome-specific probes. the ... | 2005 | 15545728 |
| sugar concentration of fruits and their detection via color in the central american spider monkey (ateles geoffroyi). | although most arguments explaining the predominance of polymorphic color vision in platyrrhine monkeys are linked to the advantage of trichromacy over dichromacy for foraging for ripe fruits, little information exists on the relationship between nutritional reward and performance in fruit detection with different types of color vision. the principal reward of most fruits is sugar, and thus it seems logical to investigate whether fruit coloration provides a long-distance sensory cue to primates t ... | 2005 | 16342072 |
| comparative use of color vision for frugivory by sympatric species of platyrrhines. | ateles spp. and alouatta spp. are often sympatric, and although they are mainly frugivorous and folivorous, respectively, they consume some of the same fruit species. however, they differ in terms of color vision, which is thought to be important for fruit detection. alouatta spp. have routine trichromatic color vision, while ateles spp. presents the classic polymorphism of platyrrhines: heterozygous females have trichromatic color vision, and males and homozygous females have dichromatic vision ... | 2005 | 16342076 |
| [germination of ficus insipida (moraceae) seeds from toucan (ramphastos sulfuratus) and spider monkey (ateles geoffroyi) feces]. | to test the null hypothesis that two vertebrate fructivores, toucans (ramphastos sulfuratus) and spider monkeys (ateles geoffroyi), are equally specialized in germinating ficus insipida seeds after these have passed through their digestive tracts, we fed fruits to captive individuals. we extracted seeds from feces and placed them on filter paper in petri dishes under controled light, temperature and humidity. control seeds had not passed through a digestive tract. we found that a greater proport ... | 2006 | 18494309 |
| scale-free foraging by primates emerges from their interaction with a complex environment. | scale-free foraging patterns are widespread among animals. these may be the outcome of an optimal searching strategy to find scarce, randomly distributed resources, but a less explored alternative is that this behaviour may result from the interaction of foraging animals with a particular distribution of resources. we introduce a simple foraging model where individual primates follow mental maps and choose their displacements according to a maximum efficiency criterion, in a spatially disordered ... | 2006 | 16790406 |
| copulation in free-ranging black-handed spider monkeys (ateles geoffroyi). | i report ad libitum data on 18 copulations involving free-ranging black-handed spider monkeys (ateles geoffroyi) on barro colorado island, panama. all copulations were performed in a dorsoventral position, as is typically reported for this genus. intromission often appeared difficult to achieve, possibly as a result of the large size of the glans penis in these animals. the average length from intromission to termination of thrusting exceeded 17 min, followed by an average period of almost 2 min ... | 2006 | 16541440 |
| seasonal variations of fecal progesterone and 17beta-estradiol in captive female black-handed spider monkeys (ateles geoffroyi). | a number of studies in free-ranging and captive spider monkeys (ateles spp.) have shown that this genus is able to reproduce throughout the entire year. nonetheless, it is still controversial whether births, and therefore conceptions, tend to be more frequent during certain seasons. in the present study, we monitored changes in fecal 17beta-estradiol and progesterone for approximately 1 years in five female black-handed spider monkeys (ateles geoffroyi) kept in captivity in mexico city. the obje ... | 2006 | 16814854 |
| lethal intragroup aggression by adult male spider monkeys (ateles geoffroyi). | i report three cases of coalitionary aggression by adult male black-handed spider monkeys (ateles geoffroyi) against subadult males within their community on barro colorado island (bci), panama. two of these cases were followed by the disappearance and presumed death of the victim. similar behavior was recently reported by valero et al. [in press], who suggested that this behavior may be the result of intense male reproductive competition. like the single instance they reported, the cases i repo ... | 2006 | 17096429 |
| olfactory sensitivity for aliphatic alcohols and aldehydes in spider monkeys (ateles geoffroyi). | using a conditioning paradigm, the olfactory sensitivity of five spider monkeys for homologous series of aliphatic 1-alcohols (1-propanol to 1-octanol) and n-aldehydes (n-butanal to n-nonanal) was investigated. with the exception of 1-propanol, the animals significantly discriminated concentrations below 1 ppm from the odorless solvent, and in several cases, individual monkeys even demonstrated detection thresholds below 10 ppb. the results showed 1) spider monkeys to have a well-developed olfac ... | 2006 | 16245343 |
| evolution of an intronic microsatellite polymorphism in toll-like receptor 2 among primates. | nonhuman primates express varying responses to mycobacterium tuberculosis: new world monkeys appear to be resistant to tuberculosis (tb) while old world monkeys seem to be particularly susceptible. the aim of this study was to elucidate the presence of the regulatory guanine-thymine (gt) repeat polymorphisms in intron 2 of toll-like receptor 2 (tlr2) associated with the development of tb in humans and to determine any variations in these microsatellite polymorphisms in primates. we sequenced the ... | 2006 | 16912902 |
| functional morphology of the first cervical vertebra in humans and nonhuman primates. | the cervical vertebral column bears or balances the weight of the head supported by the nuchal muscles that partly originate from the cervical vertebrae. the position of the head relative to the vertebral column, and consequently locomotion and posture behavior, could thus be associated with the form of the cervical vertebrae. in spite of this assumption and some empirical indications along these lines, primate vertebral morphologies have been reported to be very similar and not clearly related ... | 2006 | 16955497 |
| olfactory sensitivity for putrefaction-associated thiols and indols in three species of non-human primate. | using a conditioning paradigm, the olfactory sensitivity of four spider monkeys, three squirrel monkeys and three pigtail macaques to four thiols and two indols, substances characteristic of putrefaction processes and faecal odours, was assessed. with all odorants, the animals significantly discriminated concentrations below 1 p.p.m. (part per million) from the odourless solvent, and in several cases individual animals even demonstrated thresholds below 1 p.p.t. (part per trillion). the detectio ... | 2007 | 18025016 |
| nonhuman anthropoid primate femoral neck trabecular architecture and its relationship to locomotor mode. | functional analyses of human and nonhuman anthropoid primate femoral neck structure have largely ignored the trabecular bone. we tested hypotheses regarding differences in the relative distribution and structural anisotropy of trabecular bone in the femoral neck of quadrupedal and climbing/suspensory anthropoids. we used high-resolution x-ray computed tomography to analyze quantitatively the femoral neck trabecular structure of ateles geoffroyi, symphalangus syndactylus, alouatta seniculus, colo ... | 2007 | 17514766 |
| self-anointing behavior in free-ranging spider monkeys (ateles geoffroyi) in mexico. | during 250 h of observation, a total of 20 episodes of self-anointing, that is, the application of scent-bearing material onto the body, were recorded in a group of free-ranging mexican spider monkeys (ateles geoffroyi). the animals used the leaves of three species of plants (brongniartia alamosana, fabaceae; cecropia obtusifolia, cecropiaceae; and apium graveolens, umbelliferae) two of which have not been reported so far in this context in any new world primate species. the findings that only t ... | 2007 | 17103123 |
| high population density of black-handed spider monkeys (ateles geoffroyi) in costa rican lowland wet forest. | the main objective of this study was to estimate the population density and demographic structure of spider monkeys living in wet forest in the vicinity of sirena biological station, corcovado national park, costa rica. results of a 14-month line-transect survey showed that spider monkeys of sirena have one of the highest population densities ever recorded for this genus. density estimates varied, however, depending on the method chosen to estimate transect width. data from behavioral monitoring ... | 2007 | 17265010 |
| spider monkey ranging patterns in mexican subtropical forest: do travel routes reflect planning? | although it is well known that frugivorous spider monkeys (ateles geoffroyi yucatanensis) occupy large home ranges, travelling long distances to reach highly productive resources, little is known of how they move between feeding sites. a 11 month study of spider monkey ranging patterns was carried out at the otochma'ax yetel kooh reserve, yucatán, mexico. we followed single individuals for as long as possible each day and recorded the routes travelled with the help of a gps (global positioning s ... | 2007 | 17297617 |
| aggression and conflict management at fusion in spider monkeys. | in social systems characterized by a high degree of fission-fusion dynamics, members of a large community are rarely all together, spending most of their time in smaller subgroups with flexible membership. although fissioning into smaller subgroups is believed to reduce conflict among community members, fusions may create conflict among individuals from joining subgroups. here, we present evidence for aggressive escalation at fusion and its mitigation by the use of embraces in wild spider monkey ... | 2007 | 17311775 |
| artificial insemination in black-handed spider monkey (ateles geoffroyi). | artificial insemination (ai) was performed in spider monkeys; these primates are vulnerable to extinction and usually do not reproduce spontaneously in captivity. uterine cycles were followed by daily assessment of vaginal cytology, and corroborated a posteriori by concentrations of 17-beta estradiol and progesterone, measured by radioimmunoassay (ria), in fecal samples collected once daily. five females between 13 to 27 years old were inseminated intravaginally (with fresh semen) twice each dur ... | 2007 | 17023040 |
| demographic survey of black howler monkey (alouatta pigra) in the lachuá eco-region in alta verapaz, guatemala. | guatemala harbors three species of primates (alouatta palliata, alouatta pigra and ateles geoffroyi), but the distribution and state of conservation of populations of these species are poorly documented. in the case of a. pigra, populations have been studied recently and documented in several sites in mexico and belize, and only in one site in guatemala (tikal national park). in this study, we report first-time population data for a. pigra existing in the lachuá eco-region in northwestern guatem ... | 2008 | 17823920 |
| importance of achromatic contrast in short-range fruit foraging of primates. | trichromatic primates have a 'red-green' chromatic channel in addition to luminance and 'blue-yellow' channels. it has been argued that the red-green channel evolved in primates as an adaptation for detecting reddish or yellowish objects, such as ripe fruits, against a background of foliage. however, foraging advantages to trichromatic primates remain unverified by behavioral observation of primates in their natural habitats. new world monkeys (platyrrhines) are an excellent model for this evalu ... | 2008 | 18836576 |
| seasonal emission of seminal coagulum and in vivo sperm dynamics in the black-handed spider monkey (ateles geoffroyi). | the ejaculate of diverse primate species consists of two portions, liquid and solid; the latter, known as the seminal coagulum, is thought to sequester large numbers of sperm. in the black-handed spider monkey (ateles geoffroyi), ejaculates collected by electroejaculation did not always contain seminal coagulum. the objective of the present study was to determine seasonal emission of seminal coagulum and in vivo sperm dynamics in the black-handed spider monkey. seminal coagulum emission was rela ... | 2008 | 18068757 |
| taste difference thresholds for monosodium glutamate and sodium chloride in pigtail macaques (macaca nemestrina) and spider monkeys (ateles geoffroyi). | the purpose of this study was to determine taste difference thresholds for monosodium glutamate (msg) and sodium chloride (nacl) in pigtail macaques (macaca nemestrina) and spider monkeys (ateles geoffroyi). using a two-bottle preference test of brief duration, three animals of each species were presented with four different reference concentrations of 50, 100, 200, and 400 mm of a tastant and tested for their ability to discriminate these from lower concentrations of the same tastant. the just ... | 2008 | 18615485 |
| the seminal coagulum favours passage of fast-moving sperm into the uterus in the black-handed spider monkey. | in addition to gametes, mammalian internal fertilisation has required the evolution of assorted anatomical, physiological and biochemical devices to deal with intra- and inter-sexual conflict such as sperm competition and female cryptic choice respectively. the seminal coagulum of primates and other mammals is viewed as one of such devices. among primates, the seminal coagulum characteristically occurs in multi-male and multi-female species, leading us to suppose that it intervenes in sperm comp ... | 2008 | 18647842 |
| predicted and verified distributions of ateles geoffroyi and alouatta palliata in oaxaca, mexico. | primate conservation requires a better knowledge of the distributions and statuses of populations in both large areas of habitat and in areas for which we currently have no information. we focused on spider monkeys (ateles geoffroyi) and howler monkeys (alouatta palliata) in the state of oaxaca, mexico. this mexican state has protected large tracts of forest, and has historical records for both primates, although very little is known about them. to update our knowledge of the distributions of th ... | 2008 | 18523840 |
| prevalence of fur mites (acari: atopomelidae) in non-human primates of costa rica. | parasites have been investigated for some new world primates; however, very little is known about ectoparasites and specifically fur mites. in this study, alouatta palliata, cebus capucinus, saimiri oerstedii, and ateles geoffroyi monkeys from different areas of costa rica were searched for fur mites. a total of 276 monkeys were evaluated, and 51 of them were positive for mites of the family atopomelidae. listrocarpus alouattae was identified on 22.3% of a. palliata; listrocarpus capucinus on 12 ... | 2009 | 19637712 |