A Lu
Biographic Data
| ID | 39050 |
|---|---|
| NAME | A Lu |
| GIVEN NAMES | A |
| FAMILY NAME | Lu |
| SIGNATURE | LU A |
| AFFILIATIONS | Stony Brook University |
| ORCID | 0000-0003-4758-216X |
| VERIFIED | Yes |
| TOTAL WORKS | 18 |
| TOTAL CITATIONS | 26 |
| AUTHOR COUNT | 18 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 1990 |
| LATEST PUBLICATION YEAR | 2024 |
| H-INDEX | 2 |
Male Infanticide in the Northern Purple‐Faced Langur ( Semnopithecus vetulus Philbricki) in the Kaludiyapukuna Forest Reserve, Sri Lanka
Infanticide, the killing of conspecific infants, has been observed in many species, including rodents, carnivores, and notably, primates. Although several adaptive and non‐adaptive hypotheses have been proposed to explain this phenomenon, most cases to date appear consistent with the sexual selection hypothesis, particularly in primates. According to this hypothesis, males increase their reproductive success by eliminating unrelated unweaned infa…
Consumption of underground storage organs is associated with improved energetic status in a graminivorous primate
Mixed-species associations and attempted mating suggest hybridization between purple-faced and tufted gray langurs of Sri Lanka
Behavioral and physiological responses to instability in group membership in wild male woolly monkeys ( Lagothrix lagotricha poeppigii )
In group‐living species, integrating into a new social group after dispersal is an important life history milestone associated with physical and social challenges. Generally, this process seems to be accompanied by heightened glucocorticoid (GC) concentrations; however, most studies of physiological responses to group transfer have been conducted on species with despotic social relationships, where integrating individuals are often targets of fre…
Steroid hormone concentrations in milk predict sex‐specific offspring growth in a nonhuman primate
OBJECTIVES: In humans and other mammals, maternal hormones are transferred to offspring during lactation via milk and may regulate postnatal development, including the pace of early growth. Here, we used a nonhuman primate model to test the hypotheses that milk cortisol and dehydroepiandrosterone-sulfate (DHEAS) concentrations reflect maternal characteristics, and that changes in these hormones across lactation are associated with early postnatal…
Composition and stability of the vervet monkey milk microbiome
The human milk microbiome is vertically transmitted to offspring during the postnatal period and has emerged as a critical driver of infant immune and metabolic development. Despite this importance in humans, the milk microbiome of nonhuman primates remains largely unexplored. This dearth of comparative work precludes our ability to understand how species‐specific differences in the milk microbiome may differentially drive maternal effects and li…
Natural variation in fetal cortisol exposure is associated with neonatal body mass in captive vervet monkeys ( Chlorocebus aethiops )
Poor maternal condition during gestation is commonly associated with impaired fetal growth in humans and other animals. Although elevated maternal glucocorticoids (GCs) are often implicated as the mechanism of intrauterine growth stunting, the direct contribution of maternal GCs remains unclear because enzymatic conversion of GCs at the placenta may limit the ability of maternal hormones to reach the fetus. Further, because previous studies on ge…
Developmental responses to early‐life adversity: Evolutionary and mechanistic perspectives
Adverse ecological and social conditions during early life are known to influence development, with rippling effects that may explain variation in adult health and fitness. The adaptive function of such developmental plasticity, however, remains relatively untested in long‐lived animals, resulting in much debate over which evolutionary models are most applicable. Furthermore, despite the promise of clinical interventions that might alleviate the …
Female Reproductive Parameters in Wild Geladas (Theropithecus gelada)
Growth trajectories in wild geladas ( Theropithecus gelada )
Life history and socioecological factors have been linked to species-specific patterns of growth across female vertebrates. For example, greater maternal investment in offspring has been associated with more discrete periods of growth and reproduction. However, in primates it has been difficult to test such hypotheses because very few studies have obtained growth measurements from wild populations. Here we utilize a promising noninvasive photogra…
The meaning of weaning in wild Phayre's leaf monkeys: Last nipple contact, survival, and independence
In primates and other mammals, weaning is an equivocal concept, as is reflected in the numerous ways it is measured: a) first intake of solid food, b) conflict over access to the nipple, c) ability to survive without mother, d) maternal resumption of cycling, or e) the cessation of nipple contact. The lack of a consistent definition means that weaning age, although it falls between gestation (fetal growth) and age at first reproduction (most ener…
Reproductive suppression in female primates: A review
Reproductive performance is the currency of evolution. All things being equal, an organism should reproduce as often as possible. The puzzling questions in evolutionary biology, therefore, are not how and why an organism does reproduce, but rather how and why an organism does not reproduce. It is difficult to understand why any individual, particularly a female, might forestall reproduction when one of the biggest limitations for female mammalian…
Juggling Priorities: Female Mating Tactics in P hayre's Leaf Monkeys
Extended sexual receptivity in primates is thought to facilitate paternity confusion, thus decreasing the risk of infanticide. However, females might also provide some indication of ovulation to attract preferred males during fertile periods. We examined female mate preferences across defined receptive periods ( N = 59) in a group of wild P hayre's leaf monkeys ( T rachypithecus phayrei crepusculus ) at P hu K hieo W ildlife S anctuary (February–…
Primate life histories and dietary adaptations: A comparison of Asian colobines and Macaques
Primate life histories are strongly influenced by both body and brain mass and are mediated by food availability and perhaps dietary adaptations. It has been suggested that folivorous primates mature and reproduce more slowly than frugivores due to lower basal metabolic rates as well as to greater degrees of arboreality, which can lower mortality and thus fecundity. However, the opposite has also been proposed: faster life histories in folivores …
Reproductive characteristics of wild female Phayre's leaf monkeys
Understanding female reproductive characteristics is important for assessing fertility, interpreting female behavior, and designing appropriate conservation and captive management plans. In primate species lacking morphological signs of receptivity, such as most colobines, determination of reproductive parameters depends on the analysis of reproductive hormones. Here, we use fecal hormone analysis to characterize cycle patterns ( N =6 females) an…
Program and Conference Schedule
Agonistic behavior and dominance relationships in female phayre's leaf monkeys – preliminary results
Socioecological theory suggests a link between the strength of competition for food/safety, rates of agonism, structure of dominance hierarchies, and dispersal among group‐living females. This study presents preliminary data on agonistic behavior and dominance relationships for female Phayre's leaf monkeys ( Trachypithecus phayrei ), a species in which females routinely disperse. Behavioral observations were conducted on two groups (four adult fe…
Livres, revues et documents reçus
The meaning of weaning in wild Phayre's leaf monkeys: Last nipple contact, survival, and independence
In primates and other mammals, weaning is an equivocal concept, as is reflected in the numerous ways it is measured: a) first intake of solid food, b) conflict over access to the nipple, c) ability to survive without mother, d) maternal resumption of cycling, or e) the cessation of nipple contact. The lack of a consistent definition means that weaning age, although it falls between gestation (fetal growth) and age at first reproduction (most ener…
Primate life histories and dietary adaptations: A comparison of Asian colobines and Macaques
Primate life histories are strongly influenced by both body and brain mass and are mediated by food availability and perhaps dietary adaptations. It has been suggested that folivorous primates mature and reproduce more slowly than frugivores due to lower basal metabolic rates as well as to greater degrees of arboreality, which can lower mortality and thus fecundity. However, the opposite has also been proposed: faster life histories in folivores …
Female Reproductive Parameters in Wild Geladas (Theropithecus gelada)
Livres, revues et documents reçus
Program and Conference Schedule
Agonistic behavior and dominance relationships in female phayre's leaf monkeys – preliminary results
Socioecological theory suggests a link between the strength of competition for food/safety, rates of agonism, structure of dominance hierarchies, and dispersal among group‐living females. This study presents preliminary data on agonistic behavior and dominance relationships for female Phayre's leaf monkeys ( Trachypithecus phayrei ), a species in which females routinely disperse. Behavioral observations were conducted on two groups (four adult fe…
Reproductive characteristics of wild female Phayre's leaf monkeys
Understanding female reproductive characteristics is important for assessing fertility, interpreting female behavior, and designing appropriate conservation and captive management plans. In primate species lacking morphological signs of receptivity, such as most colobines, determination of reproductive parameters depends on the analysis of reproductive hormones. Here, we use fecal hormone analysis to characterize cycle patterns ( N =6 females) an…
Primate life histories and dietary adaptations: A comparison of Asian colobines and Macaques
Primate life histories are strongly influenced by both body and brain mass and are mediated by food availability and perhaps dietary adaptations. It has been suggested that folivorous primates mature and reproduce more slowly than frugivores due to lower basal metabolic rates as well as to greater degrees of arboreality, which can lower mortality and thus fecundity. However, the opposite has also been proposed: faster life histories in folivores …
Juggling Priorities: Female Mating Tactics in P hayre's Leaf Monkeys
Extended sexual receptivity in primates is thought to facilitate paternity confusion, thus decreasing the risk of infanticide. However, females might also provide some indication of ovulation to attract preferred males during fertile periods. We examined female mate preferences across defined receptive periods ( N = 59) in a group of wild P hayre's leaf monkeys ( T rachypithecus phayrei crepusculus ) at P hu K hieo W ildlife S anctuary (February–…
Reproductive suppression in female primates: A review
Reproductive performance is the currency of evolution. All things being equal, an organism should reproduce as often as possible. The puzzling questions in evolutionary biology, therefore, are not how and why an organism does reproduce, but rather how and why an organism does not reproduce. It is difficult to understand why any individual, particularly a female, might forestall reproduction when one of the biggest limitations for female mammalian…
The meaning of weaning in wild Phayre's leaf monkeys: Last nipple contact, survival, and independence
In primates and other mammals, weaning is an equivocal concept, as is reflected in the numerous ways it is measured: a) first intake of solid food, b) conflict over access to the nipple, c) ability to survive without mother, d) maternal resumption of cycling, or e) the cessation of nipple contact. The lack of a consistent definition means that weaning age, although it falls between gestation (fetal growth) and age at first reproduction (most ener…
Growth trajectories in wild geladas ( Theropithecus gelada )
Life history and socioecological factors have been linked to species-specific patterns of growth across female vertebrates. For example, greater maternal investment in offspring has been associated with more discrete periods of growth and reproduction. However, in primates it has been difficult to test such hypotheses because very few studies have obtained growth measurements from wild populations. Here we utilize a promising noninvasive photogra…
Female Reproductive Parameters in Wild Geladas (Theropithecus gelada)
Steroid hormone concentrations in milk predict sex‐specific offspring growth in a nonhuman primate
OBJECTIVES: In humans and other mammals, maternal hormones are transferred to offspring during lactation via milk and may regulate postnatal development, including the pace of early growth. Here, we used a nonhuman primate model to test the hypotheses that milk cortisol and dehydroepiandrosterone-sulfate (DHEAS) concentrations reflect maternal characteristics, and that changes in these hormones across lactation are associated with early postnatal…
Composition and stability of the vervet monkey milk microbiome
The human milk microbiome is vertically transmitted to offspring during the postnatal period and has emerged as a critical driver of infant immune and metabolic development. Despite this importance in humans, the milk microbiome of nonhuman primates remains largely unexplored. This dearth of comparative work precludes our ability to understand how species‐specific differences in the milk microbiome may differentially drive maternal effects and li…
Natural variation in fetal cortisol exposure is associated with neonatal body mass in captive vervet monkeys ( Chlorocebus aethiops )
Poor maternal condition during gestation is commonly associated with impaired fetal growth in humans and other animals. Although elevated maternal glucocorticoids (GCs) are often implicated as the mechanism of intrauterine growth stunting, the direct contribution of maternal GCs remains unclear because enzymatic conversion of GCs at the placenta may limit the ability of maternal hormones to reach the fetus. Further, because previous studies on ge…
Developmental responses to early‐life adversity: Evolutionary and mechanistic perspectives
Adverse ecological and social conditions during early life are known to influence development, with rippling effects that may explain variation in adult health and fitness. The adaptive function of such developmental plasticity, however, remains relatively untested in long‐lived animals, resulting in much debate over which evolutionary models are most applicable. Furthermore, despite the promise of clinical interventions that might alleviate the …
Mixed-species associations and attempted mating suggest hybridization between purple-faced and tufted gray langurs of Sri Lanka
Behavioral and physiological responses to instability in group membership in wild male woolly monkeys ( Lagothrix lagotricha poeppigii )
In group‐living species, integrating into a new social group after dispersal is an important life history milestone associated with physical and social challenges. Generally, this process seems to be accompanied by heightened glucocorticoid (GC) concentrations; however, most studies of physiological responses to group transfer have been conducted on species with despotic social relationships, where integrating individuals are often targets of fre…
Male Infanticide in the Northern Purple‐Faced Langur ( Semnopithecus vetulus Philbricki) in the Kaludiyapukuna Forest Reserve, Sri Lanka
Infanticide, the killing of conspecific infants, has been observed in many species, including rodents, carnivores, and notably, primates. Although several adaptive and non‐adaptive hypotheses have been proposed to explain this phenomenon, most cases to date appear consistent with the sexual selection hypothesis, particularly in primates. According to this hypothesis, males increase their reproductive success by eliminating unrelated unweaned infa…
Consumption of underground storage organs is associated with improved energetic status in a graminivorous primate
Biology (15 works) · Primate Behavior and Ecology (11 works) · Zoology (10 works) · Ecology (9 works) · Pregnancy (8 works) · Demography (7 works) · Neuroendocrine regulation and behavior (7 works) · Offspring (6 works) · Animal Behavior and Reproduction (5 works) · Ecology (5 works)