Summary: A new study provides significant insights into how animals, specifically three-spined stickleback fish, make decisions under competing demands. The study explored the fishs behaviors during the breeding season, where males must simultaneously defend territory, court females, and care for offspring.
By exposing male sticklebacks to various stimuli and analyzing their behavioral responses and brain gene expression, the researchers discovered a complex interaction between territorial defense and courtship, with some prioritizing defense.
This research not only sheds light on animal decision-making processes but also suggests ancient mechanisms driving complex decision-making across many taxa.
Key Facts:
Source: University of Illinois
How do animals make decisions when faced with competing demands, and how have decision making processes evolved over time?
In a recent publication in Biology Letters, Tina Barbasch, a postdoctoral researcher at the Carl R. Woese Institute for Genomic Biology, and Alison Bell (GNDP), a professor in the Department of Ecology, Evolution and Behavior, explored these questions using three-spined stickleback fish (Gasterosteus aculeatus).
Whether you are in school, working, raising children, managing a social life, or just trying to relax for a moment, managing multiple responsibilities at once can quickly become overwhelming. You may find yourself wondering how much simpler life would be if you were a fish floating along a river or a hawk soaring through the sky.
Yet, animals also face the burdens of multitasking, whether it be searching for their next meal while avoiding becoming someone elses next meal or attracting a mate while defending their territory.
During my PhD, I studied parental care in clownfish, and how they decide how much care to provide for their offspring, says Barbasch.
This requires the integration of many sources of social and environmental information. Recently, I have become interested in understanding the mechanisms underlying how animals make decisions and integrate different sources of information.
Despite the importance of decision making for an animals fitness, the mechanisms that shape decision-making are not well understood. Stickleback are a powerful model for investigating these questions because of their complex life history and reproductive behavior.
During the breeding season, male sticklebacks establish territories to build nests to attract females. Males must simultaneously defend their territories from other males, court females that enter their territory with performative swimming motions, called zig-zags, and ultimately provide care for offspring if they can successfully court a female.
This study was inspired by an experiment where we looked at brain gene expression in male three-spined stickleback during parental care or when defending their territory, explained Bell.
We found that the same genes were involved in both experiments, but in opposite directions genes turned on in one condition were turned off in the other. This idea that the brain might be using the same molecular machinery, but in opposite ways, could have major implications for the evolution of decision making.
To explore the underlying molecular mechanisms of decision making, Barbasch exposed male stickleback to one of three stimuli: a female stickleback (courtship treatment); another male stickleback (territorial intruder treatment), or both a male and female stickleback (trade-off treatment).
Some male stickleback were left alone as a control. Aggressive behaviors (biting) and courtship behaviors (zig-zags) were quantified, and then the brains of the male stickleback were dissected to look at gene expression using RNA sequencing.
Barbasch found that, when faced with a trade-off, males generally prioritized territorial defense over courtship. There was also substantial variation across males in how they responded, suggesting that there might be different strategies that males employ when faced with a trade-off.
Furthermore, the gene expression results identified groups of genes that were differentially expressed across each of the experimental treatments relative to a control. Of particular interest are the genes that are only present in the trade-off treatment, because they suggest that males have a unique molecular response when faced with conflicting demands.
We performed gene ontology analysis on these trade-off genes to look into what the identity and function of these genes might be, describes Barbasch. Preliminary results suggest the trade-off genes may be related to the dopamine response pathway, which modulates reward and motivation in the brain, or neurogenesis, which is important for cognition.
Ultimately, these findings highlight the importance of exploring the molecular basis of animal behavior, as Bell outlines. Animals are living really complicated lives, across many taxa. This suggests that the mechanisms that are driving complex decision-making are probably really ancient and animals have been managing complex decisions for a long time.
Barbaschs study also sets the foundation for a wide range of exciting follow-up studies. She has already started to explore the behavioral and molecular responses by stickleback to other trade-offs including those involving predation risk, foraging, and parental care.
She also plans on expanding her molecular toolkit by quantifying gene expression in finer detail using single-cell RNA sequencing and weighted gene co-expression network analysis, which helps capture gene function by identifying networks of genes with related patterns of expression.
So, the next time you notice an animal doing something, think a bit deeper about their day-to-day life, and how they are finding a way to manage all their responsibilities.
Author: Nicholas Vasi Source: University of Illinois Contact: Nicholas Vasi University of Illinois Image: The image is credited to Neuroscience News
Original Research: Open access. A distinct neurogenomic response to a trade-off between social challenge and opportunity in male sticklebacks (Gasterosteus aculeatus) by Alison Bell et al. Biology Letters
Abstract
A distinct neurogenomic response to a trade-off between social challenge and opportunity in male sticklebacks (Gasterosteus aculeatus)
Animals frequently make adaptive decisions about what to prioritize when faced with multiple, competing demands simultaneously.
However, the proximate mechanisms of decision-making in the face of competing demands are not well understood.
We explored this question using brain transcriptomics in a classic model system: threespined sticklebacks, where males face conflict between courtship and territorial defence. We characterized the behaviour and brain gene expression profiles of males confronted by a trade-off between courtship and territorial defence by comparing them to males not confronted by this trade-off.
When faced with the trade-off, males behaviourally prioritized defence over courtship, and this decision was reflected in their brain gene expression profiles. A distinct set of genes and biological processes was recruited in the brain when males faced a trade-off and these responses were largely non-overlapping across two brain regions.
Combined, these results raise new questions about the interplay between the neural and molecular mechanisms involved in decision-making.
See the original post:
Stickleback Fish Reveal Insights into Animal Decision-Making - Neuroscience News
- Sheffield Lab: Understanding the neuroscience of memories - University of Chicago News - April 27th, 2025 [April 27th, 2025]
- Prenatal Stress Leaves Lasting Molecular Imprints on Babies - Neuroscience News - April 27th, 2025 [April 27th, 2025]
- Dean Buonomano explores the concept of time in neuroscience and physics - The Transmitter - April 27th, 2025 [April 27th, 2025]
- Psychedelics May Reset Brain-Immune Link Driving Fear and Anxiety - Neuroscience News - April 27th, 2025 [April 27th, 2025]
- Infant Social Skills Thrive Despite Hardship - Neuroscience News - April 27th, 2025 [April 27th, 2025]
- From Cologne to Country Roads: One scientist's interdisciplinary journey to build bridges (and robotic insects) between neuroscience and engineering -... - April 27th, 2025 [April 27th, 2025]
- Eyes Reveal Intentions Faster Than We Think - Neuroscience News - April 27th, 2025 [April 27th, 2025]
- Immune Resilience Identified as Key to Healthy Aging and Longevity - Neuroscience News - April 27th, 2025 [April 27th, 2025]
- Energy Starvation Triggers Dangerous Glutamate Surges in the Brain - Neuroscience News - April 27th, 2025 [April 27th, 2025]
- WVU Rockefeller Neuroscience Institute first in U.S. to successfully test innovative brain-computer interface technology to decode speech and language... - April 27th, 2025 [April 27th, 2025]
- Microglia Reprogrammed to Deliver Precision Alzheimers Therapies - Neuroscience News - April 27th, 2025 [April 27th, 2025]
- Neuroscience Says Music Is an Emotion Regulation Machine. Heres What to Play for Happiness, Productivity, or Deep Thinking - Inc.com - April 19th, 2025 [April 19th, 2025]
- Early Maternal Affection Shapes Key Personality Traits for Life - Neuroscience News - April 19th, 2025 [April 19th, 2025]
- Elons new neuroscience major highlighted by Greensboro News & Record - Elon University - April 19th, 2025 [April 19th, 2025]
- Brain Blast event at St. Lawrence University teaches local students neuroscience - North Country Now - April 19th, 2025 [April 19th, 2025]
- AI Reveals What Keeps People Committed to Exercise - Neuroscience News - April 19th, 2025 [April 19th, 2025]
- The "Holy Grail" of Neuroscience? Researchers Create Stunningly Accurate Digital Twin of the Brain - The Debrief - April 19th, 2025 [April 19th, 2025]
- Annenberg School Vice Dean Emily Falk publishes book on the neuroscience of decision-making - The Daily Pennsylvanian - April 19th, 2025 [April 19th, 2025]
- Music-Induced Chills Trigger Natural Opioids in the Brain - Neuroscience News - April 19th, 2025 [April 19th, 2025]
- What We Value: The Neuroscience of Choice and Change - think.kera.org - April 19th, 2025 [April 19th, 2025]
- Kile takes top neuroscience post at Sutter Health as system pushes to align care, expand trials - The Business Journals - April 19th, 2025 [April 19th, 2025]
- A Grain of Brain, 523 Million Synapses, and the Most Complicated Neuroscience Experiment Ever Attempted - SciTechDaily - April 19th, 2025 [April 19th, 2025]
- Mild Brain Stimulation Alters Decision-Making Speed and Flexibility - Neuroscience News - April 19th, 2025 [April 19th, 2025]
- Cannabis studies were informing fundamental neuroscience in the 1970s - Nature - April 10th, 2025 [April 10th, 2025]
- To make a meaningful contribution to neuroscience, fMRI must break out of its silo - The Transmitter - April 10th, 2025 [April 10th, 2025]
- Steve Jobss Unexpected Secret to Being More Creative (Backed by Neuroscience) - Inc.com - April 10th, 2025 [April 10th, 2025]
- Challenging Decades of Neuroscience: Brain Cells Are More Plastic Than Previously Thought - SciTechDaily - April 10th, 2025 [April 10th, 2025]
- Q&A: Lundbecks head of R&D on letting biology speak in neuroscience - Endpoints News - April 10th, 2025 [April 10th, 2025]
- Why it's hard to study the neuroscience of psychedelics : Short Wave - NPR - April 10th, 2025 [April 10th, 2025]
- Fear Sync: How Males and Females Respond to Stress Together - Neuroscience News - April 10th, 2025 [April 10th, 2025]
- Chemotherapy Disrupts Brain Connectivity - Neuroscience News - April 10th, 2025 [April 10th, 2025]
- Newly awarded NIH grants for neuroscience lag 77 percent behind previous nine-year average - The Transmitter - April 10th, 2025 [April 10th, 2025]
- Wittstein interviewed by The Times News about new neuroscience major - Elon University - April 10th, 2025 [April 10th, 2025]
- Alto Neuroscience initiated with a Buy at H.C. Wainwright - Yahoo Finance - April 10th, 2025 [April 10th, 2025]
- New map of brain hailed as watershed for neuroscience - The Times - April 10th, 2025 [April 10th, 2025]
- GSK Ramps Up Neuroscience Investment With ABL Brain Shuttle Deal - insights.citeline.com - April 10th, 2025 [April 10th, 2025]
- ADHD and Music: Why Background Beats May Boost Study Focus - Neuroscience News - April 10th, 2025 [April 10th, 2025]
- Brains Rewire Themselves to Survive Deadly Infection - Neuroscience News - April 10th, 2025 [April 10th, 2025]
- AbbVie Hold Rating: Balancing Strong Immunology Growth with Challenges in Aesthetics, Neuroscience, and Oncology - TipRanks - April 10th, 2025 [April 10th, 2025]
- Want to Feel Better and Be More Mindful? Neuroscience Says This Habit Might Be Holding You Back - Inc.com - April 10th, 2025 [April 10th, 2025]
- How One Bad Meal Rewires the Brain to Avoid That Food Forever - Neuroscience News - April 10th, 2025 [April 10th, 2025]
- Marcus Neuroscience Institute to Host Brain and Spine Symposium - South Florida Hospital News - March 30th, 2025 [March 30th, 2025]
- Elon University to launch neuroscience major in fall 2025 - Today at Elon - March 30th, 2025 [March 30th, 2025]
- The brains stalwart sentinels express an unexpected gene - The Transmitter: Neuroscience News and Perspectives - March 30th, 2025 [March 30th, 2025]
- Video catches microglia in the act of synaptic pruning - The Transmitter: Neuroscience News and Perspectives - March 30th, 2025 [March 30th, 2025]
- Null and Noteworthy: Reexamining registered reports - The Transmitter: Neuroscience News and Perspectives - March 30th, 2025 [March 30th, 2025]
- Accepting the bitter lesson and embracing the brains complexity - The Transmitter: Neuroscience News and Perspectives - March 30th, 2025 [March 30th, 2025]
- NIH neurodevelopmental assessment system now available as iPad app - The Transmitter: Neuroscience News and Perspectives - March 30th, 2025 [March 30th, 2025]
- Stronger Bonds Before Birth Shape Healthier Mother-Child Futures - Neuroscience News - March 30th, 2025 [March 30th, 2025]
- How Emotionally Intelligent People Learn to Control Their Inner Voice, Backed by Neuroscience - Inc. - March 30th, 2025 [March 30th, 2025]
- Gabriele Scheler reflects on the interplay between language, thought and AI - The Transmitter: Neuroscience News and Perspectives - March 30th, 2025 [March 30th, 2025]
- Worlds first crowd-sourced neuroscience study aims to understand how our brains predict the future - EurekAlert - March 15th, 2025 [March 15th, 2025]
- Rewriting Neuroscience: Possible Foundations of Human Intelligence Observed for the First Time - SciTechDaily - March 15th, 2025 [March 15th, 2025]
- Calculating neurosciences carbon cost: Q&A with Stefan Pulver and William Smith - The Transmitter: Neuroscience News and Perspectives - March 15th, 2025 [March 15th, 2025]
- The future of neuroscience research at U.S. minority-serving institutions is in danger - The Transmitter: Neuroscience News and Perspectives - March 15th, 2025 [March 15th, 2025]
- Dopamine and social media: Why you cant stop scrolling, according to neuroscience - PsyPost - March 15th, 2025 [March 15th, 2025]
- Neuroscience Discovered a Clever Trick for Squeezing More Joy Out of Everyday Pleasures - Inc. - March 15th, 2025 [March 15th, 2025]
- The limits of neuroscience - The Transmitter: Neuroscience News and Perspectives - March 15th, 2025 [March 15th, 2025]
- BPOM Explains The Benefits Of Fasting From The Health And Neuroscience Side - VOI English - March 15th, 2025 [March 15th, 2025]
- How tiny tardigrades could help tackle systems neuroscience questions - The Transmitter: Neuroscience News and Perspectives - March 15th, 2025 [March 15th, 2025]
- Alison Preston explains how our brains form mental frameworks for interpreting the world - The Transmitter: Neuroscience News and Perspectives - March 15th, 2025 [March 15th, 2025]
- The Mystical Mind Meets Neuroscience: Seeking the Roots of Consciousness - Next Big Idea Club Magazine - March 15th, 2025 [March 15th, 2025]
- Myosin Therapeutics Closes Second Seed Round to Advance Clinical Trials for Innovative Cancer and Neuroscience Therapies - PR Newswire - March 5th, 2025 [March 5th, 2025]
- Neuroscience Ph.D. programs adjust admissions in response to U.S. funding uncertainty - The Transmitter: Neuroscience News and Perspectives - March 5th, 2025 [March 5th, 2025]
- New tools help make neuroimaging accessible to more researchers - The Transmitter: Neuroscience News and Perspectives - March 5th, 2025 [March 5th, 2025]
- Future Thinking Training Reduces Impulsivity - Neuroscience News - March 5th, 2025 [March 5th, 2025]
- Null and Noteworthy, relaunched: Probing a schizophrenia biomarker - The Transmitter: Neuroscience News and Perspectives - March 5th, 2025 [March 5th, 2025]
- How to communicate the value of curiosity-driven research - The Transmitter: Neuroscience News and Perspectives - March 5th, 2025 [March 5th, 2025]
- Cognitive neuroscience approach to explore the impact of wind turbine noise on various mental functions - Nature.com - March 5th, 2025 [March 5th, 2025]
- Football on the Brain: Helping coaches embed neuroscience knowledge - Training Ground Guru - March 5th, 2025 [March 5th, 2025]
- Taking Control: Using Neuroscience to Build Better Lives - theLoop - March 5th, 2025 [March 5th, 2025]
- Creating a pipeline of talent to feed the growth of Neuroscience: Lessons from Ghana - Myjoyonline - March 5th, 2025 [March 5th, 2025]
- Exclusive: NIH appears to archive policy requiring female animals in studies - The Transmitter: Neuroscience News and Perspectives - February 25th, 2025 [February 25th, 2025]
- Roll On Down The Highway 2025 Tour coming to Neuroscience Group Field - WeAreGreenBay.com - February 25th, 2025 [February 25th, 2025]
- STEM organizations host Neuroscience Outreach Fair for local K-12 students - University of Virginia The Cavalier Daily - February 25th, 2025 [February 25th, 2025]
- Adapt or die: Safeguarding the future of diversity and inclusion funding in neuroscience - The Transmitter: Neuroscience News and Perspectives - February 25th, 2025 [February 25th, 2025]
- The last two-author neuroscience paper? - The Transmitter: Neuroscience News and Perspectives - February 25th, 2025 [February 25th, 2025]
- Gate Neurosciences Strengthens Focus on the Synapse as a Therapeutic Target with Acquisition of Boost Neuroscience - Business Wire - February 25th, 2025 [February 25th, 2025]
- Why Firefly Neuroscience, Inc. (AIFF) Is Soaring This Year So Far - Yahoo Finance - February 25th, 2025 [February 25th, 2025]
- Breaking the barrier between theorists and experimentalists - The Transmitter: Neuroscience News and Perspectives - February 25th, 2025 [February 25th, 2025]