scholarly journals Real or fake? Natural and artificial social stimuli elicit divergent behavioural and neural responses in mangrove rivulus, Kryptolebias marmoratus

2018 ◽  
Vol 285 (1891) ◽  
pp. 20181610 ◽  
Author(s):  
Cheng-Yu Li ◽  
Hans A. Hofmann ◽  
Melissa L. Harris ◽  
Ryan L. Earley
Keyword(s):  
Basolateral Amygdala ◽  
Activity Patterns ◽  
Mirror Image ◽  
Social Stimuli ◽  
Different Types ◽  
Conspecific Recognition ◽  
Kryptolebias Marmoratus ◽  
Socially Relevant ◽  
Types Of Information ◽  
Mangrove Rivulus

Understanding how the brain processes social information and generates adaptive behavioural responses is a major goal in neuroscience. We examined behaviour and neural activity patterns in socially relevant brain nuclei of hermaphroditic mangrove rivulus fish ( Kryptolebias marmoratus ) provided with different types of social stimuli: stationary model opponent, regular mirror, non-reversing mirror and live opponent. We found that: (i) individuals faced with a regular mirror were less willing to interact with, delivered fewer attacks towards and switched their orientation relative to the opponent more frequently than fish exposed to a non-reversing mirror image or live opponent; (ii) fighting with a regular mirror image caused higher expression of immediate-early genes (IEGs: egr-1 and c-Fos ) in the teleost homologues of the basolateral amygdala and hippocampus, but lower IEG expression in the preoptic area, than fighting with a non-reversing mirror image or live opponent; (iii) stationary models elicited the least behavioural and IEG responses among the four stimuli; and (iv) the non-reversing mirror image and live opponent drove similar behavioural and neurobiological responses. These results suggest that the various stimuli provide different types of information related to conspecific recognition in the context of aggressive contests, which ultimately drive different neurobiological responses.

scholarly journals Social cues can push amphibious fish to their thermal limits

2018 ◽  
Vol 14 (10) ◽  
pp. 20180492 ◽  
Author(s):  
Suzanne Currie ◽  
Glenn J. Tattersall
Keyword(s):  
Social Interactions ◽  
Physical Environment ◽  
Critical Thermal Maximum ◽  
Social Stimuli ◽  
Terrestrial Environment ◽  
Thermal Limits ◽  
Thermal Maximum ◽  
Safety Margins ◽  
Kryptolebias Marmoratus ◽  
Mangrove Rivulus

Social context can impact how animals respond to changes in their physical environment. We used an aggressive, amphibious fish, the mangrove rivulus ( Kryptolebias marmoratus ) with environmentally determined sociality to test the hypothesis that social interactions would push fish to their thermal limits. We capitalized on the propensity of rivulus to emerge from warming water and demonstrated that social stimuli, produced by their reflection, increased emersion threshold without changing the critical thermal maximum, effectively diminishing thermal safety margins. When rivulus were denied air access, surface behaviours dramatically increased, supplanting social interactions. This suggests that assessing the terrestrial environment is crucially important. We conclude that social stimulation narrows the scope for survival in naturally stressful conditions.

scholarly journals Social experience alters different types of learning abilities controlled by distinct brain nuclei in Kryptolebias marmoratus

2021 ◽  
Author(s):  
Cheng-Yu Li ◽  
Dietmar Kultz ◽  
Audrey Ward ◽  
Ryan L Earley
Keyword(s):  
Spatial Learning ◽  
Basolateral Amygdala ◽  
Energy Utilization ◽  
Differentially Expressed ◽  
Learning Abilities ◽  
Cellular Processes ◽  
Kryptolebias Marmoratus ◽  
Underlying Mechanisms ◽  
Mangrove Rivulus ◽  
Social Decision Making

Fighting experiences strongly influence aggressive behavior and physiology (winner-loser effects). These effects are conserved from invertebrates to vertebrates, but the underlying mechanisms remain unclear. Recent studies indicate that the brain social decision-making network (SDN) plays a key role in guiding experience-induced behavioral change. Also, while most studies have focused on how winning and losing experiences alter aggression, growing evidence points to these experiences driving multiple behavioral effects, including changes in the ability to learn. In mangrove rivulus fish (Kryptolebias marmoratus), we discovered that single winning experiences significantly improved spatial learning but not risk-avoidance learning, whereas single losing experiences drove the exact opposite to occur. These results provide strong evidence that winning and losing modulate diverse behaviors served by key nodes within the SDN, specifically the dorsolateral pallium (Dl; fish homolog to mammalian hippocampus, which serves spatial learning) and dorsomedial pallium (Dm; fish homolog to mammalian basolateral amygdala, which responds to fear). We therefore quantified whole-proteome expression within the forebrain (where Dm and Dl are located) of adult rivulus with divergent social experiences. We discovered 23 proteins were significantly differentially expressed in the forebrains of winners and losers. Differentially expressed proteins in losers related to modulation of cellular processes, apoptosis and learning while those in winners related to neuronal plasticity, neuroendocrine homeostasis, energy utilization, and learning. These results imply that winner-loser effects might be governed by very different patterns of protein expression, which could explain why winners and losers show such pronounced differences in behavioral performance.

Effect of sleep on memory for binding different types of visual information

2020 ◽  
Author(s):  
John J Shaw ◽  
Zhisen Urgolites ◽  
Padraic Monaghan
Keyword(s):  
Visual Information ◽  
Storage Capacity ◽  
Declarative Memory ◽  
Recognition Task ◽  
Forced Choice ◽  
Long Term Memory ◽  
Term Memory ◽  
Different Types ◽  
Types Of Information

Visual long-term memory has a large and detailed storage capacity for individual scenes, objects, and actions. However, memory for combinations of actions and scenes is poorer, suggesting difficulty in binding this information together. Sleep can enhance declarative memory of information, but whether sleep can also boost memory for binding information and whether the effect is general across different types of information is not yet known. Experiments 1 to 3 tested effects of sleep on binding actions and scenes, and Experiments 4 and 5 tested binding of objects and scenes. Participants viewed composites and were tested 12-hours later after a delay consisting of sleep (9pm-9am) or wake (9am-9pm), on an alternative forced choice recognition task. For action-scene composites, memory was relatively poor with no significant effect of sleep. For object-scene composites sleep did improve memory. Sleep can promote binding in memory, depending on the type of information to be combined.

scholarly journals How the Multiplicity of Suggested Information Affects the Behavior of a User in a Recommender System

Electronics ◽  
2021 ◽  
Vol 10 (6) ◽  
pp. 741
Author(s):  
Yuseok Ban ◽  
Kyungjae Lee
Keyword(s):  
High Precision ◽  
Recommender System ◽  
Visual Information ◽  
Experimental Results ◽  
Supplementary Information ◽  
Digital Platform ◽  
Different Types ◽  
Types Of Information

Many researchers have suggested improving the retention of a user in the digital platform using a recommender system. Recent studies show that there are many potential ways to assist users to find interesting items, other than high-precision rating predictions. In this paper, we study how the diverse types of information suggested to a user can influence their behavior. The types have been divided into visual information, evaluative information, categorial information, and narrational information. Based on our experimental results, we analyze how different types of supplementary information affect the performance of a recommender in terms of encouraging users to click more items or spend more time in the digital platform.

scholarly journals The Effects of Task Complexity on the Use of Different Types of Information in a Search Assistance Tool

2020 ◽  
Vol 38 (1) ◽  
pp. 1-28 ◽  
Author(s):  
Bogeum Choi ◽  
Austin Ward ◽  
Yuan Li ◽  
Jaime Arguello ◽  
Robert Capra
Keyword(s):  
Task Complexity ◽  
Different Types ◽  
Types Of Information ◽  
Assistance Tool

scholarly journals Behavioral effects of the neurotoxin ß-N-methylamino-L-alanine on the mangrove rivulus (Kryptolebias marmoratus) larvae

2018 ◽  
Author(s):  
Alessandra Carion ◽  
Julie Hétru ◽  
Angèle Markey ◽  
Victoria Suarez-Ulloa ◽  
Silvestre Frédéric
Keyword(s):  
Genetic Factors ◽  
Prey Capture ◽  
Aquatic Ecotoxicology ◽  
Low Genetic Diversity ◽  
Variable Environments ◽  
Maximal Speed ◽  
Self Fertilization ◽  
Kryptolebias Marmoratus ◽  
Mangrove Rivulus

Mangrove rivulus, Kryptolebias marmoratus, is a hermaphrodite fish capable of self-fertilization. This particularity allows to naturally produce highly homozygous and isogenic individuals. Despite the low genetic diversity, rivulus can live in extremely variable environments and adjust its phenotype accordingly. This species represents a unique opportunity to clearly distinguish the genetic and non-genetic factors implicated in adaptation and evolution, such as epigenetic mechanisms. It is thus a great model in aquatic ecotoxicology to investigate the effects of xenobiotics on the epigenome, and their potential long-term impacts. In the present study, we used the mangrove rivulus to investigate the effects of the neurotoxin ß-N-methylamino-L-alanine (BMAA) on larvae behaviors after 7 days exposure to two sub-lethal concentrations. Results show that BMAA can affect the maximal speed and prey capture (trials and failures), suggesting potential impacts on the organism’s fitness.

scholarly journals Audio Description from a discourse perspective: a socially relevant framework for research and training

2021 ◽  
Vol 6 ◽  
Author(s):  
Sabine Braun
Keyword(s):  
Empirical Research ◽  
Research Training ◽  
Audio Description ◽  
Global Coherence ◽  
Different Types ◽  
Socially Relevant ◽  
Partially Sighted ◽  
And Training

The topic of this paper is Audio Description (AD) for blind and partially sighted people. I will outline a discourse-based approach to AD focussing on the role of mental modelling, local and global coherence, and different types of inferences (explicatures and implicatures). Applying these concepts to AD, I will discuss initial insights and outline questions for empirical research. My main aim is to show that a discourse-based approach to AD can provide an informed framework for research, training and practice.

scholarly journals Examining the Effects of Message Framing and Social Norms on Judgments of Earthquake Legislation

2021 ◽  
Author(s):  
◽  
Lauren Vinnell
Keyword(s):  
Risk Perceptions ◽  
Social Norm ◽  
Message Framing ◽  
Journal Article ◽  
Psychological Research ◽  
Risk Tolerance ◽  
Earthquake Risk ◽  
Injunctive Norms ◽  
Different Types ◽  
Types Of Information

<p>To increase earthquake preparation, it is beneficial to understand the effects of different types of information used in risk communications. This thesis adapts methods that have been used with other hazards or in hypothetical situations and applies them to increasing support for current earthquake-strengthening legislation in Wellington, New Zealand (NZ). Study 1 examined valence and numerical format framing. Expressing the number of buildings affected by the legislation as a negatively-valenced frequency was found to be most effective at increasing earthquake-related judgments¹. Study 2 examined descriptive and injunctive norms and found that a range of subject factors such as age and previous knowledge of the legislation influenced the effects of norms. Study 3 used the same manipulation and included a sample from Palmerston North, where earthquake risk perceptions are lower. This study showed several clear norm effects, with the combination of both descriptive and injunctive norms the most effective at increasing support for the earthquake legislation. All three studies showed that belief in the effectiveness of strengthening earthquake-prone buildings predicted support for the legislation and lower earthquake-risk tolerance, suggesting that this could be a key perception to target in communications. Overall, these studies suggest that certain messages are more effective at increasing support for the governmental legislation, but also that framing and social norm effects on real-world issues interact with other variables such as age and knowledge which ought to be examined further to increase the usefulness of psychological research to risk communication.  ¹ The results of this study have been accepted for publication as a peer-reviewed journal article: Vinnell, L. J., McClure, J., & Milfont, T. L. (in press). Do framing messages increase support for earthquake legislation? Disaster Prevention and Management, 26(1).</p>

Factors affecting egg production in the selfing mangrove rivulus ( Kryptolebias marmoratus )

Zoology ◽  
2017 ◽  
Vol 122 ◽  
pp. 38-45 ◽  
Author(s):  
Justin L. Lomax ◽  
Rachel E. Carlson ◽  
Judson W. Wells ◽  
Patrice M. Crawford ◽  
Ryan L. Earley
Keyword(s):  
Egg Production ◽  
Factors Affecting ◽  
Kryptolebias Marmoratus ◽  
Mangrove Rivulus
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