scholarly journals Spatial proximity and prey vibratory cues influence collective hunting in social spiders

2019 ◽  
Vol 66 (1-2) ◽  
pp. 26-31
Author(s):  
Colin M. Wright ◽  
James L.L. Lichtenstein ◽  
Lauren P. Luscuskie ◽  
Graham A. Montgomery ◽  
Sara Geary ◽  
...  
Keyword(s):  
Social Interactions ◽  
Background Noise ◽  
Prey Capture ◽  
Group Living ◽  
Spatial Proximity ◽  
Social Spiders ◽  
Collective Foraging ◽  
Do So

Abstract Social spiders are thought to predominantly receive information about their environment through vibrational cues. Thus, group living introduces the challenge of distinguishing useful vibrational information from the background noise of nestmates. Here we investigate whether spatial proximity between colony-mates may allow social spiders (Stegodyphus dumicola) to reduce background noise that might obstruct vibrational information from prey. To do so, we constructed experimental colonies and measured whether the number of spiders in proximity to one another whilst resting could predict the number of spiders that participated in prey capture. Additionally, we exposed spider colonies to five different simulated vibrational cues mimicking prey to determine which cue types spiders were most responsive to. We found that the number of spiders huddled together prior to foraging trials was positively correlated with the number of spiders participating in collective foraging. Furthermore, colonies responded more quickly to pulsed vibrational cues over other types of vibrational patterns. Together these data reveal that both social interactions and prey cues shape how social sit-and-wait predators experience and respond to their environment.

scholarly journals Social networks strongly predict the gut microbiota of wild mice

2020 ◽  
Author(s):  
Aura Raulo ◽  
Bryony Allen ◽  
Tanya Troitsky ◽  
Arild Husby ◽  
Josh A Firth ◽  
...  
Keyword(s):  
Social Network ◽  
Gut Microbiota ◽  
Social Interactions ◽  
Tracking System ◽  
Group Living ◽  
Social Contact ◽  
Spatial Proximity ◽  
Activity Data ◽  
Wild Mice ◽  
Passive Tracking

AbstractThe mammalian gut teems with beneficial microbes, yet how hosts acquire these symbionts remains poorly understood. Research in primates suggests that microbes can be picked up via social contact, but the role of social interactions in non-group-living species remains unexplored. Here, we use a passive tracking system to collect high resolution spatiotemporal activity data from wild mice (Apodemus sylvaticus). Social network analysis revealed social association strength to be the strongest predictor of microbiota similarity among individuals, controlling for factors including spatial proximity and kinship, which had far smaller or nonsignificant effects. This social effect was limited to interactions involving males (male-male and male-female), implicating sex-dependent behaviours as driving processes. Social network position also predicted microbiota richness, with well-connected hub individuals having the most diverse microbiotas. Overall, these findings suggest social contact provides a key transmission pathway for gut symbionts even in relatively asocial mammals, that strongly shapes the adult gut microbiota. This work underlines the potential for individuals to pick up beneficial symbionts as well as pathogens from social interactions.

scholarly journals Social networks strongly predict the gut microbiota of wild mice

2021 ◽  
Author(s):  
Aura Raulo ◽  
Bryony E. Allen ◽  
Tanya Troitsky ◽  
Arild Husby ◽  
Josh A. Firth ◽  
...  
Keyword(s):  
Social Network ◽  
Gut Microbiota ◽  
Social Interactions ◽  
Tracking System ◽  
Group Living ◽  
Social Contact ◽  
Spatial Proximity ◽  
Activity Data ◽  
Wild Mice ◽  
Passive Tracking

AbstractThe mammalian gut teems with microbes, yet how hosts acquire these symbionts remains poorly understood. Research in primates suggests that microbes can be picked up via social contact, but the role of social interactions in non-group-living species remains underexplored. Here, we use a passive tracking system to collect high resolution spatiotemporal activity data from wild mice (Apodemus sylvaticus). Social network analysis revealed social association strength to be the strongest predictor of microbiota similarity among individuals, controlling for factors including spatial proximity and kinship, which had far smaller or nonsignificant effects. This social effect was limited to interactions involving males (male-male and male-female), implicating sex-dependent behaviours as driving processes. Social network position also predicted microbiota richness, with well-connected individuals having the most diverse microbiotas. Overall, these findings suggest social contact provides a key transmission pathway for gut symbionts even in relatively asocial mammals, that strongly shapes the adult gut microbiota. This work underlines the potential for individuals to pick up beneficial symbionts as well as pathogens from social interactions.

Social ethology of the wolverine

2018 ◽  
Author(s):  
Jeffrey P. Copeland ◽  
Arild Landa ◽  
Kimberly Heinemeyer ◽  
Keith B. Aubry ◽  
Jiska van Dijk ◽  
...  
Keyword(s):  
Social Organization ◽  
Social Interactions ◽  
Resource Availability ◽  
Social Behaviour ◽  
Social System ◽  
Group Living ◽  
Field Studies ◽  
Ecological Framework ◽  
The Social ◽  
Living Species

Social behaviour in solitary carnivores has long been an active area of investigation but for many species remains largely founded in conjecture compared to our understanding of sociality in group-living species. The social organization of the wolverine has, until now, received little attention beyond its portrayal as a typical mustelid social system. In this chapter the authors compile observations of social interactions from multiple wolverine field studies, which are integrated into an ecological framework. An ethological model for the wolverine is proposed that reveals an intricate social organization, which is driven by variable resource availability within extremely large territories and supports social behaviour that underpins offspring development.

Ontogeny of spatial relationships and social behaviour in juvenile Richardson's ground squirrels

1981 ◽  
Vol 59 (9) ◽  
pp. 1666-1676 ◽  
Author(s):  
Gail R. Michener
Keyword(s):  
Social Interactions ◽  
Social Behaviour ◽  
Ground Squirrels ◽  
Spatial Proximity ◽  
Family Unit ◽  
Social Patterns ◽  
Rapid Acquisition ◽  
The Family ◽  
Core Areas ◽  
Close Spatial Proximity

The development of spatial and social patterns by juvenile Richardson's ground squirrels, from first emergence from the natal burrow to entry into hibernation, is described. Juveniles enter the aboveground population at [Formula: see text] weeks of age. During the next 4 weeks juveniles remain in close spatial proximity to family members with whom they engage in frequent amicable social interactions. Thereafter, juveniles become increasingly independent from the family unit, establishing their own spatially distinct core areas and exhibiting site-dependent dominance toward nonkin. Typically juveniles remain physically closer to and more amicable with littermates and mother than other conspecifics such that they compose kin clusters, the members of which are agonistic toward members of adjacent kin clusters. Daughters are more likely to continue to reside close to kin as adults than are sons. At 9–10 weeks of age juveniles exhibit the majority of spatial and social patterns characteristic of adults, and at 12 weeks they are behaviourally indistinguishable from adults. Similar rapid acquisition of adult patterns occurs in four other species of ground-dwelling sciurids that are also obligate hibernators and that breed immediately following emergence from their first hibernation.

Weaving social reality around the grandparent/great-grandparent with dementia to maintain relational presence: A verbal and non-verbal dementia interactions model

Dementia ◽  
2017 ◽  
Vol 18 (6) ◽  
pp. 2244-2260 ◽  
Author(s):  
Anca M Miron ◽  
Ashley E Thompson ◽  
Alexandria R Ebert ◽  
Susan H McFadden
Keyword(s):  
Focus Groups ◽  
Social Interactions ◽  
Perspective Taking ◽  
Family Members ◽  
Physical Space ◽  
Social Reality ◽  
Psychological Processes ◽  
Model Based ◽  
State Of Mind ◽  
Do So

We proposed a dementia interactions model based on analyses of five focus groups with grandchildren of grandparents with dementia. Interactions with their grandparent with dementia motivate grandchildren to maintain connection with a grandparent who is relationally present. To do so, they weave a social reality around the grandparent. To help the grandparent remain connected, grandchildren engage in scripts and routines and employ three intertwined psychological processes: perspective taking, vigilance, and knowledge about the grandparent's preferences, personality, state of mind, and context. Grandchildren use four relationship anchors to help the grandparent remain relationally present: family members, meaningful sensory objects and activities, physical space/context, and themselves. Implications for improving social interactions with close others with dementia are discussed.

scholarly journals Brain Perivascular Macrophages Do Not Mediate Interleukin-1-Induced Sickness Behavior in Rats

2021 ◽  
Vol 14 (10) ◽  
pp. 1030
Author(s):  
Léa Chaskiel ◽  
Robert Dantzer ◽  
Jan Konsman
Keyword(s):  
Social Interactions ◽  
Interleukin 1 ◽  
Sickness Behavior ◽  
Behavioral Activity ◽  
Activated Macrophages ◽  
Perivascular Macrophages ◽  
The Brain ◽  
Do So

Sickness behavior, characterized by on overall reduction in behavioral activity, is commonly observed after bacterial infection. Sickness behavior can also be induced by the peripheral administration of Gram-negative bacterial lipopolysaccharide (LPS) or interleukin-1beta (IL-1β), a pro-inflammatory cytokine released by LPS-activated macrophages. In addition to the microglia, the brain contains perivascular macrophages, which express the IL-1 type 1 receptor (IL-1R1). In the present study, we assessed the role of brain perivascular macrophages in mediating IL-1β-induced sickness behavior in rats. To do so, we used intracerebroventricular (icv) administration of an IL-1β-saporin conjugate, known to eliminate IL-R1-expressing brain cells, prior to systemic or central IL-1β injection. Icv IL-1β-saporin administration resulted in a reduction in brain perivascular macrophages, without altering subsequent icv or ip IL-1β-induced reductions in food intake, locomotor activity, and social interactions. In conclusion, the present work shows that icv IL-1β-saporin administration is an efficient way to target brain perivascular macrophages, and to determine whether these cells are involved in IL-1β-induced sickness behavior.

scholarly journals Proximity-based vocal networks reveal social relationships in the Southern white rhinoceros

2020 ◽  
Vol 10 (1) ◽  
Author(s):  
Julia Jenikejew ◽  
Brenda Chaignon ◽  
Sabrina Linn ◽  
Marina Scheumann
Keyword(s):  
Social Interactions ◽  
Communication Networks ◽  
Social Relationships ◽  
Social Behaviour ◽  
Vocal Communication ◽  
Group Living ◽  
White Rhinoceros ◽  
Southern White Rhinoceros ◽  
Social Associations ◽  
High Level

Abstract Vocal communication networks can be linked to social behaviour, allowing a deeper understanding of social relationships among individuals. For this purpose, the description of vocal dyads is fundamental. In group-living species, this identification is based on behavioural indicators which require a high level of reactivity during social interactions. In the present study, we alternatively established a proximity-based approach to investigate whether sex-specific differences in vocal communication reflect social behaviour in a species with rather loose social associations and low levels of reactivity: the Southern white rhinoceros (Ceratotherium simum simum). We performed audio- and video recordings of 30 captive animals from seven groups. Vocal networks for the four most common call types were constructed by considering conspecifics at close distance (≤ 1 body length) to the sender as potential receivers. The analysis of the resulting unidirectional structures showed that not only the sex of the sender but also the sex of the potential receiver, the quality of social interactions (affiliative or agonistic) as well as association strength predict the intensity of vocal interactions between group members. Thus, a proximity-based approach can be used to construct vocal networks providing information about the social relationships of conspecifics—even in species with loose social associations where behavioural indicators are limited.

scholarly journals Individual learning phenotypes drive collective behavior

2020 ◽  
Vol 117 (30) ◽  
pp. 17949-17956 ◽  
Author(s):  
Chelsea N. Cook ◽  
Natalie J. Lemanski ◽  
Thiago Mosqueiro ◽  
Cahit Ozturk ◽  
Jürgen Gadau ◽  
...  
Keyword(s):  
Individual Differences ◽  
Social Interactions ◽  
Cognitive Ability ◽  
Honey Bee ◽  
Collective Behavior ◽  
Cognitive Abilities ◽  
Learning Behavior ◽  
Collective Foraging ◽  
Familiar Stimuli ◽  
Bee Colonies

Individual differences in learning can influence how animals respond to and communicate about their environment, which may nonlinearly shape how a social group accomplishes a collective task. There are few empirical examples of how differences in collective dynamics emerge from variation among individuals in cognition. Here, we use a naturally variable and heritable learning behavior called latent inhibition (LI) to show that interactions among individuals that differ in this cognitive ability drive collective foraging behavior in honey bee colonies. We artificially selected two distinct phenotypes: high-LI bees that ignore previously familiar stimuli in favor of novel ones and low-LI bees that learn familiar and novel stimuli equally well. We then provided colonies differentially composed of different ratios of these phenotypes with a choice between familiar and novel feeders. Colonies of predominantly high-LI individuals preferred to visit familiar food locations, while low-LI colonies visited novel and familiar food locations equally. Interestingly, in colonies of mixed learning phenotypes, the low-LI individuals showed a preference to visiting familiar feeders, which contrasts with their behavior when in a uniform low-LI group. We show that the shift in feeder preference of low-LI bees is driven by foragers of the high-LI phenotype dancing more intensely and attracting more followers. Our results reveal that cognitive abilities of individuals and their social interactions, which we argue relate to differences in attention, drive emergent collective outcomes.

scholarly journals Vigilance behavior of pyrenean chamois Rupicapra pyrenaica pyrenaica: Effect of sex and position in the herd

2010 ◽  
Vol 56 (2) ◽  
pp. 232-237 ◽  
Author(s):  
Antoni Dalmau ◽  
Alfred Ferret ◽  
Xavier Manteca
Keyword(s):  
Social Interactions ◽  
Group Size ◽  
Group Living ◽  
Advantages And Disadvantages ◽  
Rupicapra Pyrenaica ◽  
Vigilance Behavior ◽  
Focal Animal ◽  
Risk Of Predation ◽  
Pyrenean Chamois ◽  
Optimal Group Size

Abstract The Pyrenean chamois Rupicapra pyrenaica pyrenaica is a mountain-dwelling ungulate with an extensive presence in open areas. Optimal group size results from the trade off between advantages (a reduction in the risk of predation) and disadvantages (competition between members of the herd) of group living. In addition, advantages and disadvantages of group living may vary depending on the position of each individual within the herd. Our objective was to study the effect of central vs. peripheral position in the herd on feeding and vigilance behavior in male and female Pyrenean chamois and to ascertain if a group size effect existed. We used focal animal sampling and recorded social interactions when a focal animal was involved. With males, vigilance rate was higher in the central part of the group than at the periphery, probably due to a higher density of animals in the central part of the herd and a higher probability of being disturbed by conspecifics. With females, vigilance rate did not differ according to position in the herd. Females spent more time feeding than males, and males showed a higher frequency of the vigilance behavior than females. We did not observe a clear relationship between group size and vigilance behavior. The differences in vigilance behavior might be due to social interactions.

scholarly journals Developing physical activity interventions for children with a visual impairment: Lessons from the First Steps initiative

2019 ◽  
Vol 37 (2) ◽  
pp. 108-123 ◽  
Author(s):  
Jennifer B Scally ◽  
Rhiannon Lord
Keyword(s):  
Physical Activity ◽  
Visual Impairment ◽  
Social Interactions ◽  
Motor Skills ◽  
Physical Activity Intervention ◽  
Activity Levels ◽  
Mixed Methods Approach ◽  
Physical Activity Interventions ◽  
Children’S Physical Activity ◽  
Do So

Children with a visual impairment are less active than their sighted peers. Yet, they are born with the potential to match their sighted peers’ motor skill competency and levels of physical fitness. Environmental barriers are one of the main causes of inequities. This article provides insight on these issues, drawing upon a physical activity intervention called ‘First Steps’, a British Blind Sport initiative that aimed to get more children with a visual impairment more active. Physical activity packs were delivered to 53 children, aged 5–15 years, with a visual impairment. Of these participants, 62% had additional impairments or medical conditions. A mixed-methods approach was used to gather participants’ experiences of physical activity prior to receiving this pack and canvas opinion on how the pack changed their activity levels. The findings revealed inequitable experiences of physical activity. The First Steps pack made considerable progress in developing children’s physical activity levels. Participants’ motor skills, social interactions, and confidence improved. Organisations working with this population might look to adopt a similar concept. Recommendations for those wishing to do so are provided.

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