American Journal of Primatology最新文献

{"title":"Maternal rejection but not protectiveness predicts juvenile Japanese macaque behavior without direct maternal influence","authors":"Barbora Kuběnová,&nbsp;Andrew J. J. MacIntosh","doi":"10.1002/ajp.23672","DOIUrl":"10.1002/ajp.23672","url":null,"abstract":"<p>Primates show large interindividual variability in the character and quantity of interactions between mothers and their immature offspring. Multiple studies have documented associations between maternal behavior and the occurrence or frequency of certain behaviors among offspring, but it remains unclear whether and how early maternal interactions generally affect behavioral development in offspring. We followed two wild groups of Japanese macaques on Yakushima island and investigated the relationship between maternal behavior and several types of behavior performed by 35 juvenile offspring. We further asked if the impact of maternal behavior on juvenile behavior persists regardless of the distance between mother and offspring, testing whether the influence extends beyond cases when the mother is nearby. We found that juveniles whose mothers frequently rejected them approached and played with others more often, independent of their mother's presence. Juveniles of more protective mothers were in proximity to fewer other individuals and played less, but only if their mothers were nearby. Maternal rejection appears to exert a generalized effect on offspring behavior that endures when mothers are absent. In contrast, effects of maternal protectiveness may be temporary and/or reflect direct maternal influences, such as active intervention in offspring interactions, or effects of the mother's own social relationships on offspring interactions. Our results suggest that understanding how maternal behavior affects offspring development requires paying attention to the context of juvenile behavior, including the mother's distance from her offspring.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"86 10","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-07","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajp.23672","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141900680","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Preliminary isotopic assessment of weaning in bonobos shows evidence for extended nursing, sibling competition and invested first-time mothers","authors":"Vicky M. Oelze,&nbsp;Kayla Ott,&nbsp;Sean M. Lee,&nbsp;Isabella O'Neal,&nbsp;Gottfried Hohmann,&nbsp;Barbara Fruth","doi":"10.1002/ajp.23678","DOIUrl":"10.1002/ajp.23678","url":null,"abstract":"<p>Although considered a hallmark in early ontogeny, weaning from breastmilk is difficult to monitor in wild primates and weaning ages remain unknown for wild bonobos (<i>Pan Paniscus</i>). Here, we calculated inter-birth intervals from demographic data and measured the isotopic offsets (Δ¹⁵N and Δ¹³C) between mother (<i>n</i> = 17) and offspring (<i>n</i> = 28) fecal sample pairs (<i>n</i> = 131, total <i>n</i> = 246) in the LuiKotale bonobos to assess nutritional weaning for the first time. We tested the effects of infant age, female parity, and sibling competition on Δ¹⁵N and Δ¹³C values. We found bonobo inter-birth intervals ranging from 2.2 to 7.3 years (x̄ = 4.7 ± 1.3 years) at LuiKotale. The Δ¹⁵N and Δ¹³C values suggested nutritional weaning on average by 6.6 and 7.0 years of age respectively, considerably exceeding weaning ages reported for chimpanzees (<i>P. troglodytes</i>) using the same approach. Our Δ¹³C data suggested that the number of offspring present affected nursing, with first-time mothers nursing more and possibly longer. The Δ¹⁵N and Δ¹³C values decreased with the arrival of the next sibling, suggesting sibling competition reduces milk access. Nevertheless, offspring may continue nursing 2.5–3 years after the birth of the next sibling, corresponding well with observations on low infant mortality. In conclusion, bonobo mothers provide remarkably enduring materna l support in the form of nursing concurrently to several offspring.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"86 11","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141896546","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Growth and allometric curves of southern brown howler monkey (Alouatta guariba): Insights on its ontogeny and conservation","authors":"Lucas Ferriolli Mariotto,&nbsp;Aline Naissa Dada,&nbsp;Thiago Campos da Silva,&nbsp;Alessandra Beirith,&nbsp;Sheila Regina Schmidt Francisco,&nbsp;Júlio Cesar de Souza Junior,&nbsp;Kaio Gutieres Ebert,&nbsp;Jenefer Schelemberg de Oliverira,&nbsp;Zelinda Maria Braga Hirano","doi":"10.1002/ajp.23675","DOIUrl":"10.1002/ajp.23675","url":null,"abstract":"<p>Ontogenetic sexual dimorphism is observed in different primate species, with ecological and evolutionary relationships explaining this pattern. Understanding the growth of the southern brown howler monkey elucidates not only the ecology and evolution but also contributes to conservation projects for this species. Throughout 20 years of the Centro de Pesquisas Biológicas de Indaial—Projeto Bugio, Brazil, we collected morphological data on 105 howlers of the <i>Alouatta guariba</i> species to identify the growth differences between ontogenetic categories and sexes and generate a growth curve to estimate the age of rescued individuals. Linear measurements were employed to obtain body length as well as the dimensions of the head and limbs. All individuals were also weighed to obtain body mass. We assessed growth rate and duration using allometric analysis based on the individuals' ages. We compared growth rate and duration among infant, juvenile, and adult howlers and between sexes. We provide growth curves for body size for both sexes using the Von Bertalanffy model. Infants have accelerated growth rate in comparison to the juveniles and adults, with no differences between sexes in establishing body length at this ontogenetic stage. Males have a prolonged development duration from the juvenile stage, reaching adulthood later than females, which explains the body length differences found in this species. Variables of head and limbs analyzed also showed differences in growth rate and duration, but not so consistently among ontogenetic stages. Mass was not a good variable to understand the growth differences of the animals, since many arrived feeble in the project and may have lost mass due to different circumstances in old age. Therefore, growth curves were obtained only for body length, allowing the estimation of the age of these animals when rescued from the wild to more effectively provide needed care in captivity.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"86 10","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141892701","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In memory of our mentor: Frans de Waal (1948–2024)","authors":"Sarah F. Brosnan,&nbsp;Filippo Aureli,&nbsp;Kristin Bonnie,&nbsp;Sarah Calcutt,&nbsp;Matthew Campbell,&nbsp;Devyn Carter,&nbsp;Zanna Clay,&nbsp;Marietta D. Danforth,&nbsp;Timothy M. Eppley,&nbsp;Jessica Flack,&nbsp;Katie Hall,&nbsp;Sarah Huneycutt,&nbsp;Peter Judge,&nbsp;Darren Long,&nbsp;Amy Parish,&nbsp;Joshua M. Plotnik,&nbsp;Jennifer J. Pokorny,&nbsp;Stephanie D. Preston,&nbsp;Darby Proctor,&nbsp;Teresa Romero,&nbsp;Michael Seres,&nbsp;Malini Suchak,&nbsp;Peter Verbeek,&nbsp;Ann Weaver,&nbsp;Christine Webb","doi":"10.1002/ajp.23668","DOIUrl":"10.1002/ajp.23668","url":null,"abstract":"<p>The world lost a towering figure when primatologist Frans de Waal passed away on March 14, 2024. Many are aware of his multitude of contributions to the field. His ability to see what animals were actually doing changed how we viewed first primates, then other species. He shared these insights through both traditional scientific outputs, such as journal articles and scientific presentations, and less common outputs, such as 15 books and two TED talks viewed millions of times. What may be less well known is his impact as a mentor. Here, 25 of us who were Frans' graduate students, postdocs, and long-term research assistants share his personal impact on our lives.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"86 9","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141873956","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Bonobos and people at Wamba: 50 years of research By Takeshi Furuichi, Gen'ichi Idani, Daiji Kimura, Hiroshi Ihobe, Chie Hashimoto, Singapore: Springer Nature, 2023. pp. 1–589. ISBN: 978-981-99-4787-4","authors":"Roman M. Wittig","doi":"10.1002/ajp.23663","DOIUrl":"10.1002/ajp.23663","url":null,"abstract":"","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"86 9","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141884133","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Cognitive performance of grey mouse lemurs (Microcebus murinus) during a discrimination learning task: Effect of the emotional valence of stimuli","authors":"E. Mortessagne,&nbsp;D. Bovet,&nbsp;C. Nozières,&nbsp;E. Pouydebat,&nbsp;F. Pifferi","doi":"10.1002/ajp.23667","DOIUrl":"10.1002/ajp.23667","url":null,"abstract":"<p>Emotions are omnipresent in many animals' lives. It is a complex concept that encompasses physiological, subjective, behavioural and cognitive aspects. While the complex relationship between emotion and cognition has been well studied in humans and in some nonhuman primates, it remains rather unexplored for other nonhuman primate species, such as lemurs. In our study, we evaluated the performance of <i>N</i> = 48 grey mouse lemurs (<i>Microcebus murinus</i>) in a discrimination learning task using visual emotional stimuli. We tested whether the type of visual stimulus (positive, negative or neutral) influenced the cognitive performance of mouse lemurs. Individuals had to learn to discriminate between two platforms according to the associated visual stimuli and to jump to the target platform (leading to a reward). Our main finding was that emotional stimuli, whether positive or negative in valence, impaired cognitive performance when used as a target. Specifically, the lowest success rate occurred when the target was associated with the emotional stimuli, and the highest success rate occurred when it was associated with neutral stimuli. Our results show a similar pattern to that found in other primate species and support the adaptive role of emotion. Our results also support that individual differences could be a factor impacting the relation between emotion and cognition. This study is the first to explore how emotions interfere with the cognitive abilities of a lemur species and highlights the importance of acknowledging emotion in mouse lemurs as well as studying the emotion-cognition interaction in a wider range of primate species.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"86 9","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-28","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajp.23667","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141787069","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Program of the Forty-Fifth Meeting of The American Society of Primatologists","authors":"Michele M. Mulholland,&nbsp;Elizabeth K. Wood","doi":"10.1002/ajp.23653","DOIUrl":"10.1002/ajp.23653","url":null,"abstract":"","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"86 S1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141756665","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The social and defensive function of olfactory behaviors in a pair-living sexually monogamous primate","authors":"Alba Garcia de la Chica,&nbsp;Margaret Corley,&nbsp;Andrea Spence-Aizenberg,&nbsp;Eduardo Fernandez-Duque","doi":"10.1002/ajp.23669","DOIUrl":"10.1002/ajp.23669","url":null,"abstract":"<p>Olfactory behaviors serve a wide variety of social functions in mammals. Odor may signal information about attributes of individuals important for mating and reproduction. Olfactory behaviors, such as scent-marking, may also function as part of home range or resource defense strategies. We assessed the potential social and home range defense functions of olfactory behavior in a pair-living and sexually monogamous primate, Azara's owl monkey (<i>Aotus azarae</i>), in the Argentinian Chaco. This is the most extensive investigation of owl monkey olfactory behaviors in the wild. Individuals regularly performed olfactory behaviors (group mean + SD = 1.3 + 0.5 per hour). The patterns were generally comparable to those observed in studies of captive owl monkeys, except that urine washing was the most common behavior in the wild, as opposed to scent-marking and genital inspections. Most olfactory behaviors were performed by adults, and there were striking sex differences in genital inspections: almost all consisted of an adult male inspecting the paired adult female. These findings suggest that olfactory behaviors play an important role in signaling and coordinating reproduction among owl monkeys, particularly during periods of female conception and pregnancy. Additionally, our research indicates that these behaviors may also serve as a defense strategy for maintaining the core area of their home ranges. This study offers the first assessment of the role of olfactory behaviors in reproductive contexts and home range defense in pair-living, monogamous platyrrhine primates.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"86 9","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141756664","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Landscape and conservation genetics of western black crested gibbons (Nomascus concolor) in China","authors":"Joseph D. Orkin,&nbsp;Kai He,&nbsp;Nai-qing Hu,&nbsp;Zhen-hua Guan,&nbsp;Bei Huang,&nbsp;Chunyan Yang,&nbsp;Peng-fei Fan,&nbsp;Xuelong Jiang","doi":"10.1002/ajp.23662","DOIUrl":"10.1002/ajp.23662","url":null,"abstract":"<p>Despite decades of field study, very little is known about the molecular ecology of gibbons, particularly as it relates to their ability to disperse across degraded and fragmentary landscapes. The critically endangered western black crested gibbon (<i>Nomascus concolor</i>) has been reduced to a small, fragmented population with about 1300 individuals. In the largest population genetic study of free-ranging gibbons to date, we sampled 47 of these gibbons from 13 sites in China and generated 15 polymorphic autosomal microsatellite markers. We identify three population clusters of <i>N. concolor</i> in Yunnan centered in 1) the Wuliang and Ailao Mountains, 2) the Yongde Daxueshan Mountains, and 3) an isolated remnant near the border with Vietnam. Within the Wuliang Mountains, we identified four subclusters, three of which are bounded by high-altitude rhododendron forest, and one that is isolated from the main population by ~2 km of degraded forest and pasture. Least-cost path analysis and isolation by resistance modeling demonstrates that the population genetic distances among gibbons in Wuliangshan National Nature Reserve are significantly correlated with geographic paths that avoid use of high-altitude rhododendron forest in favor of evergreen broadleaf forest. Although these gibbons have likely undergone reductions in heterozygosity from recent consanguineous mating, we suggest that their active avoidance of inbreeding on the population level maintains higher than expected levels of genetic diversity. This research provides new insights into how gibbons interact with heterogeneous environments and expands our understanding of their molecular ecology and conservation genetics.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"87 1","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajp.23662","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141747233","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Social tension after grooming in wild Japanese macaques (Macaca fuscata yakui) is sex specific and sensitive to social relationships","authors":"Chloë India Wright,&nbsp;Bonaventura Majolo,&nbsp;Gabriele Schino,&nbsp;Raffaella Ventura,&nbsp;Teresa Romero","doi":"10.1002/ajp.23664","DOIUrl":"10.1002/ajp.23664","url":null,"abstract":"<p>Changes in the rate of self-directed behavior—a proxy for social tension—offer valuable insights into individuals' experiences of social interactions. Many studies have tested the tension-reduction hypothesis, whereby grooming is expected to reduce social tension in the grooming partners. However, it is still unclear whether responses to grooming are affected by social factors such as an individual's role or social relationship with their partner, and whether responses are similar for females and males. Focussing on same-sex grooming in Yakushima Japanese macaques (<i>Macaca fuscata yakui</i>), we analyzed the effects of two social factors on the change in the rate of self-scratching after receiving grooming: sitting in contact with their partner outside of grooming contexts (as a measure of relationship strength) and rank distance. We collected 10-min postgrooming and matched-control focal samples on recipients of grooming. After controlling for postinhibitory rebound effects, grooming reduced scratching in females (suggesting that grooming was relaxing for the receiver), but not in males. In females, this reduction was associated with increased sitting in contact and increased rank distance: being groomed was more tension-reducing if the grooming partners spent time together outside of grooming contexts, or if their difference in rank was greater and therefore more conspicuous. The reduction effect was mediated by sitting in contact only when females had a higher-ranking—that is, more dominant and potentially aggressive—groomer. Our findings suggest that not all grooming interactions are perceived as equal, which has implications for its use as an index of relationship quality. To our knowledge, this represents the first study of postgrooming social tension in male Japanese macaques and our results highlight the need for caution when generalizing findings from only one sex to the species level.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":"86 9","pages":""},"PeriodicalIF":2.0,"publicationDate":"2024-07-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajp.23664","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141733332","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"生物学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}