Automatically detecting and tracking free‐ranging Japanese macaques in video recordings with deep learning and particle filters

Ethology ◽  
2019 ◽  
Vol 125 (5) ◽  
pp. 332-340 ◽  
Author(s):  
Masataka Ueno ◽  
Hidetaka Hayashi ◽  
Ryosuke Kabata ◽  
Kazunori Terada ◽  
Kazunori Yamada
Keyword(s):  
Deep Learning ◽  
Particle Filters ◽  
Japanese Macaques ◽  
Video Recordings ◽  
Free Ranging

scholarly journals Hygienic tendencies correlate with low geohelminth infection in free-ranging macaques

2015 ◽  
Vol 11 (11) ◽  
pp. 20150757 ◽  
Author(s):  
Cecile Sarabian ◽  
Andrew J. J. MacIntosh
Keyword(s):  
Principal Component ◽  
Japanese Macaques ◽  
Infection Risk ◽  
Risk Sensitivity ◽  
Health Maintenance ◽  
Maintenance Strategies ◽  
Food Items ◽  
The Common ◽  
Field Experimentation ◽  
Free Ranging

Parasites are ubiquitous in nature and can be costly to animal fitness, so hosts have evolved behavioural counter-strategies to mitigate infection risk. We investigated feeding-related infection-avoidance strategies in Japanese macaques via field-experimentation and observation. We first examined risk sensitivity during foraging tasks involving faecally contaminated or debris-covered food items, and then investigated individual tendencies to manipulate food items during natural foraging bouts. We concurrently monitored geohelminth infection in all subjects. We ran a principal component analysis on the observational/experimental data to generate a hygienic index across individuals and found that hygienic tendencies towards faeces avoidance and food manipulation correlated negatively with geohelminth infection. Females scored higher in hygienic tendencies than males, which might contribute to the common vertebrate pattern of male-biased infection. The behavioural tendencies observed may reflect a general form of hygiene, providing a mechanism of behavioural immunity against parasites with implications for the evolution and diversification of health maintenance strategies in humans.

scholarly journals Multimodal Advertisement of Pregnancy in Free-Ranging Female Japanese Macaques (Macaca fuscata)

PLoS ONE ◽  
2015 ◽  
Vol 10 (8) ◽  
pp. e0135127 ◽  
Author(s):  
Lucie Rigaill ◽  
Andrew J. J. MacIntosh ◽  
James P. Higham ◽  
Sandra Winters ◽  
Keiko Shimizu ◽  
...  
Keyword(s):  
Macaca Fuscata ◽  
Japanese Macaques ◽  
Female Japanese Macaques ◽  
Free Ranging

Infanticide by female wolves

1990 ◽  
Vol 68 (2) ◽  
pp. 402-404 ◽  
Author(s):  
Peter J. McLeod
Keyword(s):  
Canis Lupus ◽  
Maternal Behaviour ◽  
Common Occurrence ◽  
Video Recordings ◽  
Proximate Causes ◽  
Free Ranging

Video recordings made inside wolf dens chronicle two episodes of infanticide by different α females within a captive pack of timber wolves (Canis lupus). In one instance, infanticidal behaviour was interspersed with maternal behaviour. These cases are discussed in terms of the proximate causes of infanticide. It is also suggested that the killing of pups born to subordinate females by α females may be a common occurrence in both captive and free-ranging wolf packs.

The role of individuals in the history of a free-ranging group of Japanese macaques: Some thoughts on the relevance for human behavioural research

2001 ◽  
Vol 25 (2) ◽  
pp. 184-186 ◽  
Author(s):  
N. Itoigawa
Keyword(s):  
Social Order ◽  
Japanese Macaques ◽  
Social Organisation ◽  
Short Paper ◽  
Human Society ◽  
Success Stories ◽  
Order Change ◽  
The Individual ◽  
Free Ranging

Taking the stance that the study of nonhuman primates can be useful in understanding the mechanism of long-term changes in social organisation, this short paper seeks to shed light on the role the individual might play in changes in future human society. This is done by examining the causes of social order change in a group of free-ranging macaque monkeys. The paper suggests that it may be useful to examine the role of genetically transmitted characteristics in human “success” stories, particularly concerning adaptability in times of change, and that the examination of individual life-history data across generations, will be essential for clarifying the mechanism of changes in human social organisation.

scholarly journals Factors affecting success rate and accuracy of GPS collar positioning for free-ranging Japanese macaques

2005 ◽  
Vol 21 (2) ◽  
pp. 107-119 ◽  
Author(s):  
Yuji TAKENOSHITA ◽  
David SPRAGUE ◽  
Nobusuke IWASAKI
Keyword(s):  
Success Rate ◽  
Japanese Macaques ◽  
Factors Affecting ◽  
Gps Collar ◽  
Free Ranging
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