Antje Engelhardt
Dados Biográficos
| ID | 4232200 |
|---|---|
| NOME | Antje Engelhardt |
| PRENOMES | Antje |
| SOBRENOME | Engelhardt |
| ASSINATURA | ENGELHARDT A |
| AFILIAÇÕES | German Primate Center |
| ORCID | 0000-0003-2704-7493 |
| VERIFICADO | Sim |
| TOTAL DE OBRAS | 17 |
| TOTAL DE CITAÇÕES | 27 |
| TOTAL COMO AUTOR | 17 |
| TOTAL COMO EDITOR | 0 |
| PRIMEIRO ANO DE PUBLICAÇÃO | 2009 |
| ANO MAIS RECENTE DE PUBLICAÇÃO | 2023 |
| ÍNDICE H | 3 |
Climate, Temporal Abundance of Key Food Sources and Home Ranges of Crested Macaques (Macaca nigra) in Sulawesi, Indonesia
Climate change is associated with more frequent extreme weather conditions and an overall increase in temperature around the globe. Its impact on individual ecosystems is not yet well known. Long-term data documenting climate and the temporal abundance of food for primates are scarce. We used long-term phenological data to assess climate variation, fruit abundance and home range sizes of the endemic and Critically Endangered crested macaques ( Ma…
Do Wild, Male, Crested Macaques (Macaca nigra) Respond to the Screams of Infants Involved in Agonistic Interactions
Males may increase their fitness by providing care to offspring or to unrelated infants of female “friends” to maximise future mating. The potential for paternal care depends on paternity certainty, particularly in multi-male, multi-female groups with polygynandrous mating. In crested macaques ( Macaca nigra ), there seems to be high potential for paternity certainty and need for paternal protection. However, male-mother affiliation (or “friendsh…
Do Responses of Wild Macaca nigra to Crop Defense Resemble Responses to Predators
Investigating the Relationship Between Sociality and Reproductive Success in Wild Female Crested Macaques, Macaca nigra
Factors Affecting the Outcome and Intensity of Intergroup Encounters in Crested Macaques (Macaca nigra)
Conspecific animal groups often compete for access to fitness-enhancing resources. The more valuable the resource at stake is, the greater the costs groups can afford to outcompete their neighbours, leading to between-group conflicts. We investigated what factors affected intergroup encounter outcome (win, loss, or draw) and intensity (level of aggression and duration) in wild, crested macaques ( Macaca nigra ). We collected data on 158 dyadic in…
Exploring Strategic Functions of Sleeping Sites in Crested Macaques (Macaca nigra)
Morphological variants of silent bared‐teeth displays have different social interaction outcomes in crested macaques ( Macaca nigra )
OBJECTIVES: While it has been demonstrated that even subtle variation in human facial expressions can lead to significant changes in the meaning and function of expressions, relatively few studies have examined primate facial expressions using similarly objective and rigorous analysis. Construction of primate facial expression repertoires may, therefore, be oversimplified, with expressions often arbitrarily pooled and/or split into subjective pig…
Comparison of fecal preservation and extraction methods for steroid hormone metabolite analysis in wild crested macaques
Highly Polymorphic Microsatellite Markers for the Assessment of Male Reproductive Skew and Genetic Variation in Critically Endangered Crested Macaques (Macaca nigra)
Genetic analyses based on noninvasively collected samples have become an important tool for evolutionary biology and conservation. Crested macaques (Macaca nigra), endemic to Sulawesi, Indonesia, are important for our understanding of primate evolution as Sulawesi macaques represent an exceptional example of primate adaptive radiation. Crested macaques are also Critically Endangered. However, to date we know very little about their genetics. The …
Alpha male replacements and delayed dispersal in crested macaques ( Macaca nigra )
In species with a high male reproductive skew, competition between males for the top dominant position is high and escalated fights are common between competitors. As a consequence, challenges incur potentially high costs. Selection should favor males who time an alpha male challenge to maximize chances of a successful outcome minimizing costs. Despite the importance of alpha male replacements for individual males, we know little about the timing…
Evaluating noninvasive markers of nonhuman primate immune activation and inflammation
OBJECTIVES: Health, disease, and immune function are key areas of research in studies of ecology and evolution, but work on free-ranging primates has been inhibited by a lack of direct noninvasive measures of condition. Here, we evaluate the potential usefulness of noninvasive measurement of three biomarkers, the acute-phase proteins C-reactive protein (CRP) and haptoglobin, and neopterin, a by-product of macrophage activity. MATERIALS AND METHOD…
Personality structure and social style in macaques
Why regularities in personality can be described with particular dimensions is a basic question in differential psychology. Nonhuman primates can also be characterized in terms of personality structure. Comparative approaches can help reveal phylogenetic constraints and social and ecological patterns associated with the presence or absence of specific personality dimensions. We sought to determine how different personality structures are related …
Costs of and Investment in Mate-Guarding in Wild Long-Tailed Macaques (Macaca fascicularis)
Male primates living in multimale groups tend to direct mate and mate-guarding choices toward females of high reproductive value, i.e., high-ranking, parous females, or females with which they share strong bonds. Little is known, however, about the constraints that may limit male mate-guarding choices (the costs of this behavior) and the influence of the females' quality on male investment in mate-guarding. We aimed to study the effects of female…
Social Tolerance in Wild Female Crested Macaques ( Macaca nigra) in Tangkoko‐Batuangus Nature Reserve, Sulawesi, Indonesia
In primates, females typically drive the evolution of the social system and present a wide diversity of social structures. To understand this diversity, it is necessary to document the consistency and/or flexibility of female social structures across and within species, contexts, and environments. Macaques ( Macaca sp.) are an ideal taxon for such comparative study, showing both consistency and variation in their social relations. Their social st…
Multicomponent and Multimodal Lipsmacking in Crested Macaques ( Macaca nigra )
Primates’ communicative signals are often dynamic and composed of multiple components, sometimes belonging to different sensory modalities. Such multicomponent signals are of crucial importance in the study of communication: the addition of extra features to a signal has the potential to modulate or change the meaning and message of the specific signal. Traditionally, however, components of compound signals are studied in isolation from each othe…
Assessing dominance hierarchies
Sexual Skin Color Contains Information About the Timing of the Fertile Phase in Free-ranging Macaca mulatta
Sexual Skin Color Contains Information About the Timing of the Fertile Phase in Free-ranging Macaca mulatta
Climate, Temporal Abundance of Key Food Sources and Home Ranges of Crested Macaques (Macaca nigra) in Sulawesi, Indonesia
Climate change is associated with more frequent extreme weather conditions and an overall increase in temperature around the globe. Its impact on individual ecosystems is not yet well known. Long-term data documenting climate and the temporal abundance of food for primates are scarce. We used long-term phenological data to assess climate variation, fruit abundance and home range sizes of the endemic and Critically Endangered crested macaques ( Ma…
Morphological variants of silent bared‐teeth displays have different social interaction outcomes in crested macaques ( Macaca nigra )
OBJECTIVES: While it has been demonstrated that even subtle variation in human facial expressions can lead to significant changes in the meaning and function of expressions, relatively few studies have examined primate facial expressions using similarly objective and rigorous analysis. Construction of primate facial expression repertoires may, therefore, be oversimplified, with expressions often arbitrarily pooled and/or split into subjective pig…
Personality structure and social style in macaques
Why regularities in personality can be described with particular dimensions is a basic question in differential psychology. Nonhuman primates can also be characterized in terms of personality structure. Comparative approaches can help reveal phylogenetic constraints and social and ecological patterns associated with the presence or absence of specific personality dimensions. We sought to determine how different personality structures are related …
Factors Affecting the Outcome and Intensity of Intergroup Encounters in Crested Macaques (Macaca nigra)
Conspecific animal groups often compete for access to fitness-enhancing resources. The more valuable the resource at stake is, the greater the costs groups can afford to outcompete their neighbours, leading to between-group conflicts. We investigated what factors affected intergroup encounter outcome (win, loss, or draw) and intensity (level of aggression and duration) in wild, crested macaques ( Macaca nigra ). We collected data on 158 dyadic in…
Evaluating noninvasive markers of nonhuman primate immune activation and inflammation
OBJECTIVES: Health, disease, and immune function are key areas of research in studies of ecology and evolution, but work on free-ranging primates has been inhibited by a lack of direct noninvasive measures of condition. Here, we evaluate the potential usefulness of noninvasive measurement of three biomarkers, the acute-phase proteins C-reactive protein (CRP) and haptoglobin, and neopterin, a by-product of macrophage activity. MATERIALS AND METHOD…
Costs of and Investment in Mate-Guarding in Wild Long-Tailed Macaques (Macaca fascicularis)
Male primates living in multimale groups tend to direct mate and mate-guarding choices toward females of high reproductive value, i.e., high-ranking, parous females, or females with which they share strong bonds. Little is known, however, about the constraints that may limit male mate-guarding choices (the costs of this behavior) and the influence of the females' quality on male investment in mate-guarding. We aimed to study the effects of female…
Do Wild, Male, Crested Macaques (Macaca nigra) Respond to the Screams of Infants Involved in Agonistic Interactions
Males may increase their fitness by providing care to offspring or to unrelated infants of female “friends” to maximise future mating. The potential for paternal care depends on paternity certainty, particularly in multi-male, multi-female groups with polygynandrous mating. In crested macaques ( Macaca nigra ), there seems to be high potential for paternity certainty and need for paternal protection. However, male-mother affiliation (or “friendsh…
Do Responses of Wild Macaca nigra to Crop Defense Resemble Responses to Predators
Investigating the Relationship Between Sociality and Reproductive Success in Wild Female Crested Macaques, Macaca nigra
Sexual Skin Color Contains Information About the Timing of the Fertile Phase in Free-ranging Macaca mulatta
Assessing dominance hierarchies
Social Tolerance in Wild Female Crested Macaques ( Macaca nigra) in Tangkoko‐Batuangus Nature Reserve, Sulawesi, Indonesia
In primates, females typically drive the evolution of the social system and present a wide diversity of social structures. To understand this diversity, it is necessary to document the consistency and/or flexibility of female social structures across and within species, contexts, and environments. Macaques ( Macaca sp.) are an ideal taxon for such comparative study, showing both consistency and variation in their social relations. Their social st…
Multicomponent and Multimodal Lipsmacking in Crested Macaques ( Macaca nigra )
Primates’ communicative signals are often dynamic and composed of multiple components, sometimes belonging to different sensory modalities. Such multicomponent signals are of crucial importance in the study of communication: the addition of extra features to a signal has the potential to modulate or change the meaning and message of the specific signal. Traditionally, however, components of compound signals are studied in isolation from each othe…
Costs of and Investment in Mate-Guarding in Wild Long-Tailed Macaques (Macaca fascicularis)
Male primates living in multimale groups tend to direct mate and mate-guarding choices toward females of high reproductive value, i.e., high-ranking, parous females, or females with which they share strong bonds. Little is known, however, about the constraints that may limit male mate-guarding choices (the costs of this behavior) and the influence of the females' quality on male investment in mate-guarding. We aimed to study the effects of female…
Evaluating noninvasive markers of nonhuman primate immune activation and inflammation
OBJECTIVES: Health, disease, and immune function are key areas of research in studies of ecology and evolution, but work on free-ranging primates has been inhibited by a lack of direct noninvasive measures of condition. Here, we evaluate the potential usefulness of noninvasive measurement of three biomarkers, the acute-phase proteins C-reactive protein (CRP) and haptoglobin, and neopterin, a by-product of macrophage activity. MATERIALS AND METHOD…
Personality structure and social style in macaques
Why regularities in personality can be described with particular dimensions is a basic question in differential psychology. Nonhuman primates can also be characterized in terms of personality structure. Comparative approaches can help reveal phylogenetic constraints and social and ecological patterns associated with the presence or absence of specific personality dimensions. We sought to determine how different personality structures are related …
Highly Polymorphic Microsatellite Markers for the Assessment of Male Reproductive Skew and Genetic Variation in Critically Endangered Crested Macaques (Macaca nigra)
Genetic analyses based on noninvasively collected samples have become an important tool for evolutionary biology and conservation. Crested macaques (Macaca nigra), endemic to Sulawesi, Indonesia, are important for our understanding of primate evolution as Sulawesi macaques represent an exceptional example of primate adaptive radiation. Crested macaques are also Critically Endangered. However, to date we know very little about their genetics. The …
Alpha male replacements and delayed dispersal in crested macaques ( Macaca nigra )
In species with a high male reproductive skew, competition between males for the top dominant position is high and escalated fights are common between competitors. As a consequence, challenges incur potentially high costs. Selection should favor males who time an alpha male challenge to maximize chances of a successful outcome minimizing costs. Despite the importance of alpha male replacements for individual males, we know little about the timing…
Comparison of fecal preservation and extraction methods for steroid hormone metabolite analysis in wild crested macaques
Morphological variants of silent bared‐teeth displays have different social interaction outcomes in crested macaques ( Macaca nigra )
OBJECTIVES: While it has been demonstrated that even subtle variation in human facial expressions can lead to significant changes in the meaning and function of expressions, relatively few studies have examined primate facial expressions using similarly objective and rigorous analysis. Construction of primate facial expression repertoires may, therefore, be oversimplified, with expressions often arbitrarily pooled and/or split into subjective pig…
Climate, Temporal Abundance of Key Food Sources and Home Ranges of Crested Macaques (Macaca nigra) in Sulawesi, Indonesia
Climate change is associated with more frequent extreme weather conditions and an overall increase in temperature around the globe. Its impact on individual ecosystems is not yet well known. Long-term data documenting climate and the temporal abundance of food for primates are scarce. We used long-term phenological data to assess climate variation, fruit abundance and home range sizes of the endemic and Critically Endangered crested macaques ( Ma…
Do Wild, Male, Crested Macaques (Macaca nigra) Respond to the Screams of Infants Involved in Agonistic Interactions
Males may increase their fitness by providing care to offspring or to unrelated infants of female “friends” to maximise future mating. The potential for paternal care depends on paternity certainty, particularly in multi-male, multi-female groups with polygynandrous mating. In crested macaques ( Macaca nigra ), there seems to be high potential for paternity certainty and need for paternal protection. However, male-mother affiliation (or “friendsh…
Do Responses of Wild Macaca nigra to Crop Defense Resemble Responses to Predators
Investigating the Relationship Between Sociality and Reproductive Success in Wild Female Crested Macaques, Macaca nigra
Factors Affecting the Outcome and Intensity of Intergroup Encounters in Crested Macaques (Macaca nigra)
Conspecific animal groups often compete for access to fitness-enhancing resources. The more valuable the resource at stake is, the greater the costs groups can afford to outcompete their neighbours, leading to between-group conflicts. We investigated what factors affected intergroup encounter outcome (win, loss, or draw) and intensity (level of aggression and duration) in wild, crested macaques ( Macaca nigra ). We collected data on 158 dyadic in…
Exploring Strategic Functions of Sleeping Sites in Crested Macaques (Macaca nigra)
Biology (15 obras) · Primate Behavior and Ecology (14 obras) · Animal Behavior and Reproduction (12 obras) · Animal Vocal Communication and Behavior (10 obras) · Ecology (10 obras) · Animal ecology (9 obras) · Psychology (8 obras) · Zoology (8 obras) · Demography (7 obras) · Aggression (6 obras)