Impact of ocean warming on a coral reef fish learning and memory [PeerJ]
Por um escritor misterioso
Last updated 11 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://upload.wikimedia.org/wikipedia/commons/5/5f/Overview_of_climatic_changes_and_their_effects_on_the_ocean.png)
Effects of climate change on oceans - Wikipedia
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://dfzljdn9uc3pi.cloudfront.net/2022/14006/1/fig-3-full.png)
Diversity and distribution of Symbiodiniaceae detected on coral
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://dfzljdn9uc3pi.cloudfront.net/2018/4308/1/fig-3-2x.jpg)
Historical baselines of coral cover on tropical reefs as estimated
![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/2018/4308/1/fig-2-full.png)
Historical baselines of coral cover on tropical reefs as estimated
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://www.researchgate.net/profile/Heloysa-Silva-2/publication/372998146/figure/fig2/AS:11431281182393131@1692358941938/Time-spent-in-the-non-target-and-the-target-halls-of-the-tank-during-learning-and-memory_Q320.jpg)
PDF) Impact of ocean warming on a coral reef fish learning and memory
![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.mdpi.com/diversity/diversity-13-00554/article_deploy/html/images/diversity-13-00554-g007-550.jpg)
Diversity, Free Full-Text
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://www.iucn.org/sites/default/files/2022-04/thumbnail_coral_reefs_and_climate_change_issues_brief_final.jpg)
Coral reefs and climate change - resource
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://ars.els-cdn.com/content/image/1-s2.0-S0048969719333406-gr3.jpg)
Adaptive responses of fishes to climate change: Feedback between
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://pub.mdpi-res.com/sensors/sensors-23-06753/article_deploy/html/images/sensors-23-06753-g001.png?1690537202)
Sensors, Free Full-Text
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://www.science.org/cms/10.1126/science.aau1758/asset/338a03df-d742-4f64-a665-5aa287b47d78/assets/graphic/363_979_f1.jpeg)
Impacts of historical warming on marine fisheries production
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://onlinelibrary.wiley.com/cms/asset/9d1447d9-bd4e-4963-9229-22c2bc21dd61/brv12984-fig-0001-m.jpg)
Water column contributions to coral reef productivity: overcoming
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://reefbuilders.com/wp-content/blogs.dir/1/files/2015/03/Acanthochromis-polyacanthus.png)
Warming Oceans Impact Reef Fish Learning and Memory
![Impact of ocean warming on a coral reef fish learning and memory [PeerJ]](https://media.springernature.com/full/springer-static/image/art%3A10.1038%2Fs41893-023-01137-1/MediaObjects/41893_2023_1137_Fig1_HTML.png)
Sustained productivity and the persistence of coral reef fisheries
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