American Journal of Primatology最新文献

{"title":"Singing in the rain! Climate constraints on the occurrence of indri's song","authors":"Valeria Ferrario,&nbsp;Teresa Raimondi,&nbsp;Chiara De Gregorio,&nbsp;Filippo Carugati,&nbsp;Walter Cristiano,&nbsp;Valeria Torti,&nbsp;Rebecca N. Lewis,&nbsp;Daria Valente,&nbsp;Leah J. Williams,&nbsp;Claire Raisin,&nbsp;Marco Gamba,&nbsp;Achaz Von Hardenberg,&nbsp;Cristina Giacoma","doi":"10.1002/ajp.23673","DOIUrl":"10.1002/ajp.23673","url":null,"abstract":"<p>The study of how animals adapt their behaviors depending on weather variables has gained particular significance in the context of climate change. This exploration offers insights into endangered species' potential threats and provides information on the direction to take in conservation activities. In this context, noninvasive, cost-effective, and potentially long-term monitoring systems, such as Passive Acoustic Monitoring (PAM), become particularly appropriate. Our study investigates the relationship between weather variables and the vocal behavior of <i>Indri indri</i>, the sole singing lemur species, within Madagascar's Maromizaha New Protected Area. Using PAM, we explore the factors shaping the vocalization patterns of this primate species in response to some environmental factors in their natural habitat. Analysis of an extensive audio data set collected across different years revealed the differential influence of temperature and precipitation on <i>Indri indri</i> vocal activity. We found that rainfall negatively influenced the emission of the vocalizations while warmer temperatures correlated with a greater emission of songs. The various environmental factors we considered also affected the timing of vocal emissions, showing the same pattern. Furthermore, our study confirms, once again, the strength of PAM as a valuable tool for studying vocal animal communication quickly, giving us information about long-term behavioral patterns that would be difficult to get in other ways. This research gives us further valuable information about how indris use vocalizations in their environment and how they adjust to environmental changes.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajp.23673","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141970432","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":"Applying machine learning to primate bioacoustics: Review and perspectives","authors":"Jules Cauzinille,&nbsp;Benoit Favre,&nbsp;Ricard Marxer,&nbsp;Arnaud Rey","doi":"10.1002/ajp.23666","DOIUrl":"10.1002/ajp.23666","url":null,"abstract":"<p>This paper provides a comprehensive review of the use of computational bioacoustics as well as signal and speech processing techniques in the analysis of primate vocal communication. We explore the potential implications of machine learning and deep learning methods, from the use of simple supervised algorithms to more recent self-supervised models, for processing and analyzing large data sets obtained within the emergence of passive acoustic monitoring approaches. In addition, we discuss the importance of automated primate vocalization analysis in tackling essential questions on animal communication and highlighting the role of comparative linguistics in bioacoustic research. We also examine the challenges associated with data collection and annotation and provide insights into potential solutions. Overall, this review paper runs through a set of common or innovative perspectives and applications of machine learning for primate vocal communication analysis and outlines opportunities for future research in this rapidly developing field.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-08-09","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajp.23666","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141905612","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":"Examining predictive meteorological variables in the singing behavior of northern white-cheeked gibbons (Nomascus leucogenys) in northern Lao PDR","authors":"Jay White,&nbsp;Akchousanh Rasphone,&nbsp;Anong Thoyar,&nbsp;Vincent Nijman","doi":"10.1002/ajp.23679","DOIUrl":"10.1002/ajp.23679","url":null,"abstract":"<p>Considering the conservation attention needed to keep viable the few remaining wild populations of the Critically Endangered northern white-cheeked gibbon (<i>Nomascus leucogenys</i>), there has been a serious paucity of research undertaken for the species. To improve the effectiveness of surveys of this and other gibbon species, and ultimately their conservation, it is important to better understand the variables that affect their singing behavior—the feature that is currently used in most gibbon population surveys. We collected singing and meteorological data from 320 days, between October 2020 and March 2021, at 80 different locations, during an auditory presence/non-detection survey of <i>N. leucogenys</i> in northeastern Lao PDR. Songs were detected on 100 of the 320 days, a total of 154 song bouts. We analyzed the differences in song bout frequency, song bout timing (in relation to sunrise), and song bout length in relation to the meteorological variables of temperature, relative humidity, cloud cover, rain, fog, and wind. We found song bout frequency to be significantly greater on mornings with cloud cover (as a function of improved detection), on mornings without fog, on mornings without rain, and on warmer mornings. We found song bouts to start significantly earlier on mornings without fog and on warmer mornings when fog was present. Finally, we found song bouts lasted longer on mornings with fog and on warmer mornings. We did not find any significant relationships with relative humidity or wind. These patterns fit with prior research on behavioral responses of gibbons to weather and improve the understanding of gibbon vocal behavior to better prepare researchers for designing auditory surveys of <i>Nomascus</i> and other gibbon species.</p>","PeriodicalId":7662,"journal":{"name":"American Journal of Primatology","volume":null,"pages":null},"PeriodicalIF":2.0,"publicationDate":"2024-08-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://onlinelibrary.wiley.com/doi/epdf/10.1002/ajp.23679","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141905613","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":"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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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":null,"pages":null},"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}