scholarly journals A new approach to assessing the space use behavior of macroinvertebrates by automated video tracking

2021 ◽  
Author(s):  
Milad Shokri ◽  
Francesco Cozzoli ◽  
Mario Ciotti ◽  
Vojsava Gjoni ◽  
Vanessa Marrocco ◽  
...  
Keyword(s):  
Space Use ◽  
Video Tracking ◽  
New Approach ◽  
Use Behavior ◽  
Automated Video Tracking

scholarly journals Automated video tracking and flight analysis show how bumblebees solve a pattern discrimination task using active vision

2021 ◽  
Author(s):  
HaDi MaBouDi ◽  
Mark Roper ◽  
Marie Guiraud ◽  
James A.R. Marshall ◽  
Lars Chittka
Keyword(s):  
High Speed ◽  
Discrimination Task ◽  
Active Vision ◽  
Pattern Discrimination ◽  
Relevant Information ◽  
Small Region ◽  
Video Tracking ◽  
Head Movements ◽  
Flight Behaviour ◽  
Automated Video Tracking

AbstractActive vision, the ability of the visual system to actively sample and select relevant information out of a visual scene through eye and head movements, has been explored in a variety of animal species. Small-brained animals such as insects might rely even more on sequential acquisition of pattern features since there might be less parallel processing capacity in their brains than in vertebrates. To investigate how active vision strategies enable bees to solve visual tasks, here, we employed a simple visual discrimination task in which individual bees were presented with a multiplication symbol and a 45° rotated version of the same pattern (“plus sign”). High-speed videography of unrewarded tests and analysis of the bees’ flight paths shows that only a small region of the pattern is inspected before successfully accepting a target or rejecting a distractor. The bees’ scanning behaviour of the stimuli differed for plus signs and multiplication signs, but for each of these, the flight behaviour was consistent irrespective of whether the pattern was rewarding or unrewarding. Bees typically oriented themselves at ~±30° to the patterns such that only one eye had an unobscured view of stimuli. There was a significant preference for initially scanning the left side of the stimuli. Our results suggest that the bees’ movement may be an integral part of a strategy to efficiently analyse and encode their environment.Summary statementAutomated video tracking and flight analysis is proposed as the next milestone in understanding mechanisms underpinning active vision and cognitive visual abilities of bees.

Parasites in space and time: a novel method to assess and illustrate host-searching behaviour of trematode cercariae

Parasitology ◽  
2018 ◽  
Vol 145 (11) ◽  
pp. 1469-1474 ◽  
Author(s):  
Christian Selbach ◽  
Robert Poulin
Keyword(s):  
Life Histories ◽  
Parasite Community ◽  
Video Tracking ◽  
Trematode Species ◽  
Host Searching ◽  
Novel Method ◽  
The Individual ◽  
Individual Strategies ◽  
Host Parasite ◽  
Automated Video Tracking

AbstractThe transmission from one host to another constitutes a challenging obstacle for parasites and is a key determinant of their fitness. Due to their complex life histories involving several different hosts, the free-living dispersal stages (cercariae) of digenean trematodes show a huge diversity in morphology and behaviour. On a finer scale, we still have an extremely limited understanding of the inter- and intraspecific variation in transmission strategies of many trematode species. Here, we present a novel method to study the movement patterns of cercariae of four New Zealand trematode species (Coitocaecum parvum, Maritrema poulini, Apatemon sp. and Aporocotylid sp. I.) via automated video tracking. This approach allows to quantify parameters otherwise not measurable and clearly illustrates the individual strategies of parasites to search for their respective target hosts. Cercariae that seek out an evasive fish target hosts showed higher swimming speeds (acceleration and velocity) and travelled further distances, compared with species searching for high-density crustacean hosts. Automated video tracking provides a powerful tool for such detailed analyses of parasites’ host-searching strategies and can enhance our understanding of complex host–parasite interactions, ranging from parasite community structure to the transmission of potential disease agents.

Automated Video Tracking To Assess Executive Aspects of Cancellation in Stroke (P02.031)

Neurology ◽  
2012 ◽  
Vol 78 (Meeting Abstracts 1) ◽  
pp. P02.031-P02.031
Author(s):  
V. Mark ◽  
L. Chasan
Keyword(s):  
Video Tracking ◽  
Automated Video Tracking

scholarly journals Optimizing multivariate behavioural syndrome models in locusts using automated video tracking

2012 ◽  
Vol 84 (4) ◽  
pp. 771-784 ◽  
Author(s):  
Darron A. Cullen ◽  
Gregory A. Sword ◽  
Stephen J. Simpson
Keyword(s):  
Video Tracking ◽  
Behavioural Syndrome ◽  
Automated Video Tracking

scholarly journals The Relationship Between Spatial Configuration and Social Interaction in High-Rise Flats: A Case Study On The Jatinegara Barat in Jakarta.

2018 ◽  
Vol 41 ◽  
pp. 07003
Author(s):  
Rifan Ridwana ◽  
Budi Prayitno ◽  
Adi Utomo Hatmoko
Keyword(s):  
Social Interaction ◽  
Open Space ◽  
Spatial Configuration ◽  
Space Use ◽  
Large Area ◽  
Large Space ◽  
High Rise ◽  
Shared Space ◽  
Use Behavior ◽  
The Relationship

The construction of high-rise flats to minimize urban slum areas in Indonesia still create space use behavior problems for its residents due to the changes of space configuration between high-rise landed housing. Conventional high-rise flats cannot well accommodate the needs of social interactions happened in landed housing because of its spatial limitation that leads to uncertainty of space use behavior settings. This study aims to understand the relationship between spatial configuration on high-rise flats and social interaction levels of its residents. The object of study is Jatinegara Barat high-rise flats built to relocate slums community from the landed housing in Kampong Pulo. This study applies mix method research using space syntax method to analyze spatial configuration by looking at connectivity and space integration values, and then comparing it with social interaction data from place centered observation to find out the level of interaction and spaces tendency used interaction place. The results of this study indicate that: (1) the relationship of spatial configuration to social interaction level in Jatinegara Barat flats can be positive or negative. (2) Positive relationships are found on the1st and 2ndfloor areas. High configuration values with high interaction levels are found in shared spaces on the 1st and 2nd floors with characteristics such as open space, large space, and availability of interaction supporting elements, while low configuration values with low interaction levels are found in more confined spaces such as private spaces and narrow corridors. (3) Negative relationships are found in the corridor and shared space in front of the elevator on each typical floors. Shared space in front of the elevator that has high spatial configuration value with large area show a low level of social interaction. While corridor with lower configuration value with the narrow area but have supporting elements such as chairs, mats, and shops have a higher level of social interaction. (4) This study shows that in the case of the relationship between spatial configuration and social interaction, availability of interaction supporting elements has greater influence rather than any other spatial factors.

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