I. Matsuda

Gut microbial community in proboscis monkeys (Nasalis larvatus): implications for effects of geographical and social factors

This study analyzes the gut microbiota of proboscis monkeys to assess how geographical and social factors influence their microbial communities.

The multilevel society of proboscis monkeys with a possible patrilineal basis

This study investigates the social structure of proboscis monkeys, finding evidence of a multilevel society with a patrilineal basis through direct observation and genetic analysis.

Effects of short-term isolation on social animals' behavior: an experimental case study of Japanese macaque

This study examines how short-term isolation affects the movement patterns of Japanese macaques using Bluetooth tracking and machine learning to identify isolation vs. group behavior with high accuracy.

Dietary habits of free-ranging banded langur (Presbytis femoralis) in a secondary-human modified forest in Johor, Malaysia

This study examines the dietary habits of critically endangered banded langurs in Malaysia, finding they rely on both cultivated and non-cultivated plants, with a preference for fruits from cultivated plants.

Apparent diet digestibility of captive colobines in relation to stomach types with special reference to fibre digestion

This study compares apparent diet digestibility between tripartite and quadripartite colobine monkeys, finding higher fibre digestibility in quadripartite species due to the additional praesaccus chamber.

Population dynamics and ranging behaviors of provisioned silvered langur (Trachypithecus cristatus) in Peninsular Malaysia

The paper examines population trends and ranging behaviors of silvered langurs in Peninsular Malaysia, finding stable demographics but negative ecological impacts from provisioning.

Activity Budget and Postural Behaviours in Orangutans on Bukit Merah Orang Utan Island for Assessing Captive Great Ape Welfare

This study analyzes the activity and postural behaviors of captive orangutans on BMOUI to assess their welfare, finding less feeding and more resting compared to free-ranging individuals.

Large male proboscis monkeys have larger noses but smaller canines

The paper examines the relationship between nose and canine sizes in male proboscis monkeys, finding a negative correlation between body and canine sizes due to ecological trade-offs.

Macroscopic digestive anatomy of ring-tailed lemurs (Lemur catta), including a comparison of frozen and formalin-stored specimens

This study quantifies macroscopic digestive anatomy in ring-tailed lemurs across ontogeny, comparing frozen and formalin-stored specimens and finding no significant storage method impact on measurements.

Factors influencing riverine utilization patterns in two sympatric macaques

The paper examines factors influencing riverine utilization in two sympatric macaque species and compares them with proboscis monkeys, finding that food availability and predation pressure drive their riverine behavior.

Agent-based simulation for reconstructing social structure by observing collective movements with special reference to single-file movement

The paper uses agent-based simulations to reconstruct animal social structures from single-file movement data using the Louvain algorithm.

Non-Parametric Analysis of Inter-Individual Relations Using an Attention-Based Neural Network

This paper introduces a non-parametric neural network with attention mechanism to analyze inter-individual relations from location data, successfully recovering simulated relations and discovering female-oriented social patterns in Japanese macaques.

The diet and feeding behaviour of the black-and-white colobus (Colobus guereza) in the Kalinzu Forest, Uganda

This study describes the diet and feeding behavior of black-and-white colobus monkeys in Kalinzu Forest, Uganda, over 30 months, revealing seasonal variations and dietary adaptations.

Animals exhibit personality traits in their movement: a case study on location trajectories of primates

This study identifies personality traits in movement patterns of Japanese macaques using 3D location data and neural network analysis.