Damselfish face climate change: Impact of temperature and habitat structure on agonistic behavior

Silva-Pinto, Thalles da; Silveira, Mayara M.; Souza, Jéssica Ferreira de; Moreira, Ana Luisa Pires; Vieira, Edson A.; Longo, Guilherme O.; Luchiari, Ana Carolina

doi:10.1371/journal.pone.0235389

Cited by 10 publications

(4 citation statements)

References 77 publications

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“…The brain plays an essential role in the regulation of these biological processes through the establishment of endocrine status (Kah et al, 1993;Pankhurst and Munday, 2011), partnership and synchronization of spawning (Kah et al, 1993), learning and cognition (Braithwaite, 2006), choice and preference (Cummings, 2015), and social interactions (Winberg et al, 1996). Changes in environmental temperature can alter the behavior of marine fishes (Allan et al, 2015;Rey et al, 2015;Warren and McCormick, 2019;Angiulli et al, 2020;da Silva-Pinto et al, 2020;Babkiewicz et al, 2021), and these traits could be associated with differences in gene expression. For example, gene expression in zebrafish brains shows that elevated temperatures can impact the cytoarchitecture, metabolism, intracellular communication, cellular transport, and calcium binding (Toni et al, 2019;Nonnis et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

Molecular Response of the Brain to Cross-Generational Warming in a Coral Reef Fish

et al. 2022

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Ocean warming is a threat to marine biodiversity, as it can push marine species beyond their physiological limits. Detrimental effects can occur when marine poikilotherms are exposed to conditions beyond their thermal optima. However, acclamatory mechanisms, such as plasticity, may enable compensation of detrimental effects if warming is experienced during development or across generations. Studies evaluating the molecular responses of fishes to warming have mostly focused on liver, muscle, and gonads, and little is known about the effects on other vital organs, including the brain. This study evaluated the transcriptional program of the brain in the coral reef fish Acanthochromis polyacanthus, exposed to two different warming scenarios: +1.5°C and +3.0°C, across successive generations. Fish were exposed to these conditions in both developmental (F1 and F2) and transgenerational settings (F2 only), as well as a treatment with step-wise warming between generations. The largest differences in gene expression were between individuals of the first and second generation, a pattern that was corroborated by pairwise comparisons between Control F1 and Control F2 (7,500 DEGs) fish. This large difference could be associated with parental effects, as parents of the F1 generation were collected from the wild, whereas parents of the F2 generation were reared in captivity. A general response to warming was observed at both temperatures and in developmental and transgenerational treatments included protein folding, oxygen transport (i.e., myoglobin), apoptosis and cell death, modification of cellular structure, mitochondrial activity, immunity and changes in circadian regulation. Treatments at the highest temperature showed a reduction in synaptic activity and neurotransmission, which matches previous behavioral observations in coral reef fishes. The Transgenerational +3.0°C treatment showed significant activation of the gene pls3, which is known for the development of neuro-muscular junctions under heat-stress. F2 samples exposed to step-wise warming showed an intermediate response, with few differentially expressed genes compared to developmental and transgenerational groups (except for Transgenerational +1.5°C). In combination with previous studies on liver gene expression, this study indicates that warming produces a molecular signature of stress response in A. polyacanthus that is influenced both by the intensity of warming as well as the duration of exposure.

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Section: Introductionmentioning

confidence: 99%

Molecular Response of the Brain to Cross-Generational Warming in a Coral Reef Fish

et al. 2022

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“…Additionally, when displaying aggressive behavior, damselfish maintain their dorsal fin erect, anal fins expanded and their body color becomes darker. This type of display is well documented and was used as a response parameter to measure aggressiveness in previous studies with S. fuscus (Silveira et al, 2015 ; Da Silva-Pinto et al, 2020 ). Damselfish videos were analyzed and one blind observer counted the number of aggressive behaviors described above and the latency to the first attack.…”

Section: Methodsmentioning

confidence: 99%

Agonistic Behavior Is Affected by Memory in the Dusky Damselfish Stegastes fuscus

Silveira

Souza

Araujo-Silva

et al. 2021

Front. Behav. Neurosci.

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The ability to discriminate familiar from unfamiliar conspecifics has been demonstrated in several species of fish. Agonistic interactions are among the most frequent behaviors exhibited by territorial species and could offer useful information for the individual recognition process. In agonistic situations, memory may modulate the behavioral response and affect social dynamics, but few studies have explored the memory retention acquired during aggressive encounters. The present study investigated the memory retention of an agonistic encounter in the dusky damselfish Stegastes fuscus. The experimental procedure was divided into three parts: (1) Familiarization; (2) Recognition test; and (3) Memory test. During the familiarization phase, the fish were visually exposed to the same conspecific for 5 days (10 min per day) and the behavior was recorded. On the following day (conspecific recognition test), half of the animals were paired with the same conspecific and the other half with a different conspecific for 10 min, and the behavior was recorded. The fish were retested 5, 10, and 15 days after the test to evaluate memory retention. In the memory test, they were exposed to the same conspecific as before or to a different conspecific. We found that the damselfish reduced their agonistic displays when the stimulus fish was familiar, but when it was unfamiliar, the animals were more aggressive and only reduced their mnemonic response after 10 days. These results suggest that the recognition ability of damselfish can be affected by time and that it modulates agonistic response.

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“…2D). Aggression behavior was assessed based on the time the damselfish spent in the zone within 5 cm from the mirror (da Silva- Pinto et al, 2020).…”

Section: Mirror Aggression Testmentioning

confidence: 99%

Effects of ocean acidification on dopamine-mediated behavioral responses of a coral reef damselfish

Hamilton

Tresguerres

Kwan

et al. 2023

Science of The Total Environment

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Damselfish face climate change: Impact of temperature and habitat structure on agonistic behavior

Cited by 10 publications

References 77 publications

Molecular Response of the Brain to Cross-Generational Warming in a Coral Reef Fish

Molecular Response of the Brain to Cross-Generational Warming in a Coral Reef Fish

Agonistic Behavior Is Affected by Memory in the Dusky Damselfish Stegastes fuscus

Effects of ocean acidification on dopamine-mediated behavioral responses of a coral reef damselfish

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