M Cords
Dados Biográficos
| ID | 3138 |
|---|---|
| NOME | M Cords |
| PRENOMES | M |
| SOBRENOME | Cords |
| ASSINATURA | CORDS M |
| AFILIAÇÕES | Columbia University |
| ORCID | 0000-0001-7416-0603 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 32 |
| TOTAL DE CITAÇÕES | 28 |
| TOTAL COMO AUTOR | 32 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 1987 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2026 |
| ÍNDICE H | 3 |
Helminth Infections in Wild Golden Monkeys ( Cercopithecus mitis kandti ) in Rwanda
Habitat loss is one of the greatest threats to extant primates, with effects that are immediate and time delayed. Identifying how habitat loss affects wildlife, particularly vulnerable populations, is important to understand the mechanisms that can lead to population decline. Golden monkeys are a subspecies of guenon with two extant populations: one larger (> 4000) on the Virunga Massif, and the other smaller (~200) in Gishwati Forest. Once conne…
The Effect of Sampling Schedule on Assessment of Dietary Measures
Accurately assessing primate diets is important in studies of behavioral ecology and evolution. While previous research has compared sampling methods (scan, focal), we examined how sampling schedule influences accuracy of dietary measures. We define sampling schedule as the combined distribution (random vs. consecutive) and frequency of sampling days within a given month. Under field conditions, time may be required to locate a study group, and w…
Multiple Motivations
Primates are known for forming agonistic coalitions, but most data come from species in which agonism occurs frequently and rank predicts fitness. We analyzed coalitions and interventions in wild blue monkeys ( Cercopithecus mitis ), in which both agonism and third‐party involvement are relatively rare, and in which rank does not predict fitness. Data came from a long‐term study in the Kakamega Forest, Kenya, spanning 12 years and 12 groups. Inte…
Thelma Rowell, Obituary
News and Perspectives
Postings on social media on Twitter (now X), BioAnthropology News (Facebook), and other venues, as well as recent publications in prominent journals, show that primatologists, ecologists, and other researchers are questioning the terms “Old World” and “New World” due to their colonial implications and history. The terms are offensive if they result in erasing Indigenous voices and history, ignoring the fact that Indigenous peoples were in the Ame…
Early life maternal sociality predicts juvenile sociality in blue monkeys
Maternal effects are widespread in living organisms though little is known about whether they shape individual affiliative social behavior in primates. Further, it remains a question whether maternal effects on affiliative behavior differ by offspring sex, as they do in other physiological systems, especially in species with high levels of adult sexual dimorphism and divergence in social niches. We explored how direct and indirect experiences of …
Effects of Female Group Size on the Number of Males in Blue Monkey (Cercopithecus mitis) Groups
Dietary generalists and nutritional specialists
Generalist primates eat many food types and shift their diet with changes in food availability. Variation in foods eaten may not, however, match variation in nutrient intake. We examined dietary variation in a generalist‐feeder, the blue monkey ( Cercopithecus mitis ), to see how dietary food intake related to variation in available food and nutrient intake. We used 371 all‐day focal follows from 24 adult females (three groups) in a wild rainfore…
Evidence for paternal kin bias in the social affiliation of adult female blue monkeys
If animals increase inclusive fitness by cooperating with relatives, nepotism should involve maternal and paternal kin equally, all else being equal. Evidence of a behavioral bias toward paternal half-siblings in primates is both limited and mixed, with most positive reports from papionins. To expand knowledge of paternal kin recognition, particularly in cercopithecine monkeys, we examined evidence for paternal kin bias in wild blue monkeys (Cerc…
Bat Predation by Cercopithecus Monkeys
Maternal kin bias in affiliative behavior among wild adult female blue monkeys
Kin-biased cooperative and affiliative behavior is widespread in social mammals and is expected to increase fitness. However, despite evolutionary benefits of cooperating with relatives, demographic circumstances may influence the strength of kin bias. We studied the relationship between maternal kinship and affiliative behavior among 78 wild adult female blue monkeys (Cercopithecus mitis) from 8 groups monitored for 1-5 years. We compared behavi…
Agonism and dominance in female blue monkeys
Agonistic behavior features prominently in hypotheses that explain how social variation relates to ecological factors and phylogenetic constraints. Dominance systems vary along axes of despotism, tolerance, and nepotism, and comparative studies examine cross-species patterns in these classifications. To contribute to such studies, we present a comprehensive picture of agonistic behavior and dominance relationships in wild female blue monkeys (Cer…
Social status and helminth infections in female forest guenons ( Cercopithecus mitis )
OBJECTIVE: When resource competition within primate social groups is effective, high-ranking individuals generally gain fitness benefits. Contrary to expectations, female Cercopithecus mitis form linear dominance hierarchies without evidence for rank-related variation in fitness-relevant measures, raising questions about the evolution of guenon social structure. Here, we test whether social status predicts gastrointestinal helminth infections, kn…
Averting biodiversity collapse in tropical forest protected areas
Evaluating the suitability of planted forests for African forest monkeys
As natural forest cover declines, planted forests have come to occupy an increasing percentage of the earth's surface, yet we know little about their suitability as alternative habitat for wildlife. Although some primate species use planted forests, few studies have compared primate populations in natural and nearby planted forests. From March 2006 to July 2010, we conducted line transect surveys and assessed group sizes and compositions in natur…
Social behavior, foraging strategies, and fecal glucocorticoids in female blue monkeys ( Cercopithecus mitis )
Socioecological theory predicts that aggressive feeding competition is associated with linear dominance hierarchies and reproductive advantages for high‐ranking females. Female blue monkeys contest fruits and have a linear dominance hierarchy, yet previous research has shown no evidence that high‐ranking females benefit from greater feeding success or fertility. Here, we assess whether individuals differ in fecal glucocorticoid (fGC) excretion an…
Sex and age differences in juvenile social priorities in female philopatric, nondespotic blue monkeys
Juveniles should choose social partners on the basis of both current and future utility. Where one sex is philopatric, one expects members of that sex to develop greater and sex‐typical social integration with group‐mates over the juvenile period. Where a partner's position in a dominance hierarchy is not associated with services it can provide, one would not expect juveniles to choose partners based on rank, nor sex differences in rank‐based pre…
Life History of Cercopithecus mitis stuhlmanni in the Kakamega Forest, Kenya
Infanticide in Cercopithecus mitis stuhlmanni in the Kakamega Forest, Kenya
Cheek pouch use, predation risk, and feeding competition in blue monkeys ( Cercopithecus mitis stuhlmanni )
The adaptive function of cheek pouches in the primate subfamily Cercopithecinae remains unresolved. By analyzing the circumstances of cheek pouch use, we tested two hypotheses for the evolution of cercopithecine cheek pouches proposed in earlier studies: (1) cheek pouches reduce vulnerability to predation, and (2) cheek pouches increase feeding efficiency by reducing competition. We studied two groups of wild blue monkeys ( Cercopithecus mitis st…
Toward a More Complete View of Human Nature
Diurnal primate densities and biomass in the Kakamega Forest
Line-transect surveys were conducted at the Isecheno study site in the Kakamega Forest, western Kenya to estimate diurnal primate densities. The estimates from several different methods of analysis of census data were compared to "true" density values based on home range size and overlap for two species. The Whitesides method [Whitesides et al., 1988], which incorporates species-specific mean group spread into its formula for estimating transect …
Grooming Partners of Immature Blue Monkeys (Cercopithecus mitis) in the Kakamega
Reasons for reconciling
Primates in Perspective
Reciprocity and partner preference in grooming of female blue monkeys
Infanticide in Cercopithecus mitis stuhlmanni in the Kakamega Forest, Kenya
Life History of Cercopithecus mitis stuhlmanni in the Kakamega Forest, Kenya
Cheek pouch use, predation risk, and feeding competition in blue monkeys ( Cercopithecus mitis stuhlmanni )
The adaptive function of cheek pouches in the primate subfamily Cercopithecinae remains unresolved. By analyzing the circumstances of cheek pouch use, we tested two hypotheses for the evolution of cercopithecine cheek pouches proposed in earlier studies: (1) cheek pouches reduce vulnerability to predation, and (2) cheek pouches increase feeding efficiency by reducing competition. We studied two groups of wild blue monkeys ( Cercopithecus mitis st…
Grooming Partners of Immature Blue Monkeys (Cercopithecus mitis) in the Kakamega
Social influences on grooming site preferences among captive long-tailed macaques
Birth intervals ofCercopithecus monkeys of the kakamega forest, Kenya
Mixed‐species association of East African guenons
Sympatric guenons in East Africa associate with one another in mixed‐species groups to an intermediate degree. This makes it possible to compare a given group's ecology and behavior when it is part of an association to when it is unaccompanied, and to correlate association tendency with various ecological parameters. Two studies incorporating these approaches have been made of sympatric Cercopithecus ascanius and C. mitis monkeys in the Kakamega …
Reciprocity and partner preference in grooming of female blue monkeys
Social influences on grooming site preferences among captive long-tailed macaques
Biological Anthropology
On operationally defining reconciliation
Post‐conflict reconciliatory behavior has been reported to occur with variable frequencies in different primate groups and species. Because different investigators have used different criteria to operationalize reconciliation, however, it is possible that the variation reported merely reflects different methods of study. To compare different groups and species in a meaningful way, an accurate operationalization of reconciliation is necessary. Thi…
Reasons for reconciling
Reasons for reconciling
Diurnal primate densities and biomass in the Kakamega Forest
Line-transect surveys were conducted at the Isecheno study site in the Kakamega Forest, western Kenya to estimate diurnal primate densities. The estimates from several different methods of analysis of census data were compared to "true" density values based on home range size and overlap for two species. The Whitesides method [Whitesides et al., 1988], which incorporates species-specific mean group spread into its formula for estimating transect …
Grooming Partners of Immature Blue Monkeys (Cercopithecus mitis) in the Kakamega
Toward a More Complete View of Human Nature
Cheek pouch use, predation risk, and feeding competition in blue monkeys ( Cercopithecus mitis stuhlmanni )
The adaptive function of cheek pouches in the primate subfamily Cercopithecinae remains unresolved. By analyzing the circumstances of cheek pouch use, we tested two hypotheses for the evolution of cercopithecine cheek pouches proposed in earlier studies: (1) cheek pouches reduce vulnerability to predation, and (2) cheek pouches increase feeding efficiency by reducing competition. We studied two groups of wild blue monkeys ( Cercopithecus mitis st…
Sex and age differences in juvenile social priorities in female philopatric, nondespotic blue monkeys
Juveniles should choose social partners on the basis of both current and future utility. Where one sex is philopatric, one expects members of that sex to develop greater and sex‐typical social integration with group‐mates over the juvenile period. Where a partner's position in a dominance hierarchy is not associated with services it can provide, one would not expect juveniles to choose partners based on rank, nor sex differences in rank‐based pre…
Life History of Cercopithecus mitis stuhlmanni in the Kakamega Forest, Kenya
Infanticide in Cercopithecus mitis stuhlmanni in the Kakamega Forest, Kenya
Social behavior, foraging strategies, and fecal glucocorticoids in female blue monkeys ( Cercopithecus mitis )
Socioecological theory predicts that aggressive feeding competition is associated with linear dominance hierarchies and reproductive advantages for high‐ranking females. Female blue monkeys contest fruits and have a linear dominance hierarchy, yet previous research has shown no evidence that high‐ranking females benefit from greater feeding success or fertility. Here, we assess whether individuals differ in fecal glucocorticoid (fGC) excretion an…
Averting biodiversity collapse in tropical forest protected areas
Evaluating the suitability of planted forests for African forest monkeys
As natural forest cover declines, planted forests have come to occupy an increasing percentage of the earth's surface, yet we know little about their suitability as alternative habitat for wildlife. Although some primate species use planted forests, few studies have compared primate populations in natural and nearby planted forests. From March 2006 to July 2010, we conducted line transect surveys and assessed group sizes and compositions in natur…
Maternal kin bias in affiliative behavior among wild adult female blue monkeys
Kin-biased cooperative and affiliative behavior is widespread in social mammals and is expected to increase fitness. However, despite evolutionary benefits of cooperating with relatives, demographic circumstances may influence the strength of kin bias. We studied the relationship between maternal kinship and affiliative behavior among 78 wild adult female blue monkeys (Cercopithecus mitis) from 8 groups monitored for 1-5 years. We compared behavi…
Agonism and dominance in female blue monkeys
Agonistic behavior features prominently in hypotheses that explain how social variation relates to ecological factors and phylogenetic constraints. Dominance systems vary along axes of despotism, tolerance, and nepotism, and comparative studies examine cross-species patterns in these classifications. To contribute to such studies, we present a comprehensive picture of agonistic behavior and dominance relationships in wild female blue monkeys (Cer…
Social status and helminth infections in female forest guenons ( Cercopithecus mitis )
OBJECTIVE: When resource competition within primate social groups is effective, high-ranking individuals generally gain fitness benefits. Contrary to expectations, female Cercopithecus mitis form linear dominance hierarchies without evidence for rank-related variation in fitness-relevant measures, raising questions about the evolution of guenon social structure. Here, we test whether social status predicts gastrointestinal helminth infections, kn…
Bat Predation by Cercopithecus Monkeys
Evidence for paternal kin bias in the social affiliation of adult female blue monkeys
If animals increase inclusive fitness by cooperating with relatives, nepotism should involve maternal and paternal kin equally, all else being equal. Evidence of a behavioral bias toward paternal half-siblings in primates is both limited and mixed, with most positive reports from papionins. To expand knowledge of paternal kin recognition, particularly in cercopithecine monkeys, we examined evidence for paternal kin bias in wild blue monkeys (Cerc…
Dietary generalists and nutritional specialists
Generalist primates eat many food types and shift their diet with changes in food availability. Variation in foods eaten may not, however, match variation in nutrient intake. We examined dietary variation in a generalist‐feeder, the blue monkey ( Cercopithecus mitis ), to see how dietary food intake related to variation in available food and nutrient intake. We used 371 all‐day focal follows from 24 adult females (three groups) in a wild rainfore…
Early life maternal sociality predicts juvenile sociality in blue monkeys
Maternal effects are widespread in living organisms though little is known about whether they shape individual affiliative social behavior in primates. Further, it remains a question whether maternal effects on affiliative behavior differ by offspring sex, as they do in other physiological systems, especially in species with high levels of adult sexual dimorphism and divergence in social niches. We explored how direct and indirect experiences of …
Primate Behavior and Ecology (29 obras) · Biology (25 obras) · Animal Behavior and Reproduction (20 obras) · Ecology (16 obras) · Zoology (16 obras) · Demography (15 obras) · Animal Vocal Communication and Behavior (13 obras) · Psychology (13 obras) · Animal ecology (10 obras) · Social Psychology (9 obras)