Vocal Repertoire of Sooty Mangabeys (Cercocebus torquatus atys) in the Tai National Park

Ethology ◽  
2004 ◽  
Vol 110 (4) ◽  
pp. 301-321 ◽  
Author(s):  
Friederike Range ◽  
Julia Fischer
2020 ◽  
Vol 13 (7) ◽  
pp. 2991-3008
Author(s):  
Bomey Clément Gba ◽  
Jean-Claude Koffi Bene ◽  
Zoro Bertin Gone Bi ◽  
Alexander Mielke ◽  
Inza Kone

Within social groups, feeding competition and predation pressure affect individual spatial position. The costs and benefits associated to each position are likely to influence the time that individuals allocate to different activities. Whether the effect of spatial positioning on activity budget differs between individuals of different sex or dominance rank remains unclear. This study aimed at investigating the effect of within-group spatial position on the activity budget of male and female sooty mangabeys. Focal behavioral observations was used to collect the individual location and behavior every 15 minutes (N=5115 locations) on 29 individuals from a wild group of sooty mangabeys (Cercocebus atys) in the Taï National Park. The joint effect of rank, sex and spatial position on individual‟s activity budget was investigated. Females were more central in the group and both fed and rested more than males, independently of their rank. High-ranking  individuals from both sexes were more likely to be central and both fed and rested longer than low-ranking ones. Females and high-ranking individuals from both sexes benefit from their social status by adopting spatial positions in the community that could influence their fitness positively. These results are discussed to improve our understanding of social dynamics in wild primates.Keywords: Spatial position, primates, socio-ecology, social dynamics.


Viruses ◽  
2019 ◽  
Vol 11 (3) ◽  
pp. 279 ◽  
Author(s):  
Jan Gogarten ◽  
Markus Ulrich ◽  
Nishit Bhuva ◽  
Joel Garcia ◽  
Komal Jain ◽  
...  

New technologies enable viral discovery in a diversity of hosts, providing insights into viral evolution. We used one such approach, the virome capture sequencing for vertebrate viruses (VirCapSeq-VERT) platform, on 21 samples originating from six dead Maxwell’s duikers (Philantomba maxwellii) from Taï National Park, Côte d’Ivoire. We detected the presence of an orthohepadnavirus in one animal and characterized its 3128 bp genome. The highest viral copy numbers were detected in the spleen, followed by the lung, blood, and liver, with the lowest copy numbers in the kidney and heart; the virus was not detected in the jejunum. Viral copy numbers in the blood were in the range known from humans with active chronic infections leading to liver histolytic damage, suggesting this virus could be pathogenic in duikers, though many orthohepadnaviruses appear to be apathogenic in other hosts, precluding a formal test of this hypothesis. The virus was not detected in 29 other dead duiker samples from the Côte d’Ivoire and Central African Republic, suggesting either a spillover event or a low prevalence in these populations. Phylogenetic analysis placed the virus as a divergent member of the mammalian clade of orthohepadnaviruses, though its relationship to other orthohepadnaviruses remains uncertain. This represents the first orthohepadnavirus described in an artiodactyl. We have tentatively named this new member of the genus Orthohepadnavirus (family Hepadnaviridae), Taï Forest hepadnavirus. Further studies are needed to determine whether it, or some close relatives, are present in a broader range of artiodactyls, including livestock.


2020 ◽  
Vol 145 ◽  
pp. 14902-14913
Author(s):  
N’DRI Olga Rosemonde ◽  
KONAN Yao Aristide ◽  
MONNEY Attoubé Ida ◽  
KONE Tidiani

Objectifs : Des investigations ont été menées dans 11 sites du lac de Buyo situés sur le cours du fleuve Sassandra dans le Parc National de Taï (Côte d’Ivoire) en vue de connaître les espèces de poisson qui utilisent ces zones comme sites de reproduction. Méthodologie et Résultats : Dans chaque site d’échantillonnage, les variables environnementales ont été mesurées et les poissons ont été capturés à l’aide de filets maillants. Les stades de maturité sexuelle avancés ont été considérés comme critères de reconnaissance des sites de fraie. La richesse spécifique a été de 32 espèces, répartie en 13 familles et dominée par les Cichlidae (7 espèces, soit 22%). Sur la base des stades sexuels de maturité, 14 espèces, en phase de reproduction, ont été capturées dans les 11 sites d’échantillonnage. Les résultats de l’analyse des sédiments ont indiqué une prédominance de sable (>60%) dans les sites de reproduction et des valeurs optimales de température (28,52°C), de pH (6,53), de conductivité (36,50 μS/cm) et d’oxygène dissous (5,37 mg/l). Conclusion et application des résultats : La présente étude a montré que les sites échantillonnés dans le lac de Buyo situé à l’intérieur du le Parc National de Taï sont caractérisés par des sédiments sableux et constituent des frayères pour plusieurs espèces de poisson. La localisation de ces zones de reproduction représente donc un outil important pour les gestionnaires dans la conservation de la diversité piscicole du parc national de Taï. Mots clés : sites de frai, stade de maturité sexuelle, ichtyofaune, lac de barrage de Buyo. Specific inventory and characteristics of some spawning grounds of Lake Buyo in the Taï National Park (South-West Côte d'Ivoire) Abstract Objectives: Investigations were carried out in 11 sites of Lake Buyo located in the midstream of Sassandra River in Taï National Park (Côte d'Ivoire) to get to know fish species that use these areas as spawning sites. Methodology and Results: Environmental variables were measured in each sampling sites and fish were caught using gillnets. Advanced stages of sexual maturity were considered as recognition criteria of spawning areas. Specific richness was of 32 species, belonging in 13 families and dominated by Cichlidae (7 species, 22%). Based on advanced sexual maturity stages, 14 species in spawning period, were captured at the 11 sampling sites. Results of sediment analysis indicated a predominance of sand (> 60%) in spawning sites and optimal values of temperature (28.52°C), pH (6,53), conductivity (36,50 μS/cm) and dissolved oxygen (5,37 mg/l). Conclusion and application of results: The present study showed that sites sampled in Lake Buyo located within the Tai National Park are characterized by sandy sediments and constitute spawning areas for several fish species. The location of these spawning areas therefore is an important tool for managers in conserving fish diversity of Taï National Park. Keywords: spawning sites, stage of sexual maturity, Ichtyofauna, Buyo Dam Lake.


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