Impact of ocean warming on a coral reef fish learning and memory [PeerJ]
Por um escritor misterioso
Last updated 25 abril 2025
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://dfzljdn9uc3pi.cloudfront.net/2023/15729/1/fig-5-full.png)
Tropical ectotherms are highly sensitive to environmental warming, especially coral reef fishes, which are negatively impacted by an increase of a few degrees in ocean temperature. However, much of our understanding on the thermal sensitivity of reef fish is focused on a few traits (e.g., metabolism, reproduction) and we currently lack knowledge on warming effects on cognition, which may endanger decision-making and survival. Here, we investigated the effects of warming on learning and memory in a damselfish species, Acanthochromis polyacanthus. Fish were held at 28–28.5 °C (control group), 30–30.5 °C (moderate warming group) or 31.5–32 °C (high warming group) for 2 weeks, and then trained to associate a blue tag (cue) to the presence of a conspecific (reward). Following 20 training trials (5 days), fish were tested for associative learning (on the following day) and memory storage (after a 5-days interval). The control group A. polyacanthus showed learning of the task and memory retention after five days, but increasing water temperature impaired learning and memory. A thorough understanding of the effects of heat stress, cognition, and fitness is urgently required because cognition may be a key factor determining animals’ performance in the predicted scenario of climate changes. Knowing how different species respond to warming can lead to better predictions of future community dynamics, and because it is species specific, it could pinpoint vulnerable/resilience species.
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41598-020-63679-0/MediaObjects/41598_2020_63679_Fig1_HTML.png)
Warming and temperature variability determine the performance of
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs43247-020-00054-x/MediaObjects/43247_2020_54_Fig1_HTML.png)
Ocean warming and acidification uncouple calcification from
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://dfzljdn9uc3pi.cloudfront.net/2020/9865/1/fig-6-full.png)
Bigfin reef squid demonstrate capacity for conditional discrimination
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://ars.els-cdn.com/content/image/1-s2.0-S0006320720309599-ga1.jpg)
Exploring coral reef biodiversity via underwater soundscapes
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://www.frontiersin.org/files/Articles/1069494/fmars-10-1069494-HTML-r1/image_m/fmars-10-1069494-g001.jpg)
Frontiers Culturing for conservation: the need for timely
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://scx2.b-cdn.net/gfx/news/hires/2019/fishingandpo.jpg)
Fishing and pollution regulations don't help corals cope with
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://www.usharbors.com/wp-content/uploads/2022/12/coralhousekeepers_Madison-Gard-Hollings-Scholar-and-Tauna-Rankin-NOAA-CRCP-Fisheries-Lead-300x232.jpg)
Relationship between Corals and fishes
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://osu-wams-blogs-uploads.s3.amazonaws.com/blogs.dir/2115/files/2023/11/SAPPHIRE-announcement-logos-1.png)
climate change – Geospatial Ecology of Marine Megafauna Laboratory
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://www.frontiersin.org/files/Articles/784418/fmars-09-784418-HTML-r1/image_m/fmars-09-784418-g001.jpg)
Frontiers Molecular Response of the Brain to Cross-Generational
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://pub.mdpi-res.com/remotesensing/remotesensing-15-04077/article_deploy/html/images/remotesensing-15-04077-g002.png?1692754288)
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