Reversible morphological changes in a juvenile marine fish after exposure to predatory alarm cues
Chemical cues from predators induce a range of predator-induced morphological defences (PIMDs) observed across fish taxa. However, the mechanisms, consistency, direction and adaptive value of PIMDs are still poorly studied. Here, we have tested if predatory cues can induce changes in the body shape...
| Main Authors: | , , , , , , |
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| Format: | Article |
| Language: | English |
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The Royal Society
2020-05-01
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| Series: | Royal Society Open Science |
| Subjects: | |
| Online Access: | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.191945 |
| _version_ | 1818656074849320960 |
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| author | Carlos Díaz-Gil Josep Alós Pablo Arechavala-Lopez Miquel Palmer Inmaculada Riera-Batle Amalia Grau Ignacio A. Catalán |
| author_facet | Carlos Díaz-Gil Josep Alós Pablo Arechavala-Lopez Miquel Palmer Inmaculada Riera-Batle Amalia Grau Ignacio A. Catalán |
| author_sort | Carlos Díaz-Gil |
| collection | DOAJ |
| description | Chemical cues from predators induce a range of predator-induced morphological defences (PIMDs) observed across fish taxa. However, the mechanisms, consistency, direction and adaptive value of PIMDs are still poorly studied. Here, we have tested if predatory cues can induce changes in the body shape of the juvenile marine fish Sparus aurata reared under controlled conditions without the presence of predators by exposing individuals to the olfactory stimulus of a fish predator. We tested our hypothesis using a nested replicated before-after-control-impact experiment, including recovery (potential reversibility) after the cessation of the predator stimulus. Differences in the size-independent body shape were explored using landmark-based geometric morphometrics and revealed that, on average, individuals exposed to a predatory cue presented deeper bodies and longer caudal regions, according to our adaptive theoretical predictions. These average plastic responses were reversible after withdrawal of the stimulus and individuals returned to average body shapes. We, therefore, provide evidence supporting innate reversible PIMDs in marine naive fish reared under controlled conditions. The effects at the individual level, including fitness and the associated applied implications, deserve further research. |
| first_indexed | 2024-12-17T03:19:48Z |
| format | Article |
| id | doaj.art-018638e6144a46d8b62fc64cca95fa87 |
| institution | Directory Open Access Journal |
| issn | 2054-5703 |
| language | English |
| last_indexed | 2024-12-17T03:19:48Z |
| publishDate | 2020-05-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj.art-018638e6144a46d8b62fc64cca95fa872022-12-21T22:05:33ZengThe Royal SocietyRoyal Society Open Science2054-57032020-05-017510.1098/rsos.191945191945Reversible morphological changes in a juvenile marine fish after exposure to predatory alarm cuesCarlos Díaz-GilJosep AlósPablo Arechavala-LopezMiquel PalmerInmaculada Riera-BatleAmalia GrauIgnacio A. CatalánChemical cues from predators induce a range of predator-induced morphological defences (PIMDs) observed across fish taxa. However, the mechanisms, consistency, direction and adaptive value of PIMDs are still poorly studied. Here, we have tested if predatory cues can induce changes in the body shape of the juvenile marine fish Sparus aurata reared under controlled conditions without the presence of predators by exposing individuals to the olfactory stimulus of a fish predator. We tested our hypothesis using a nested replicated before-after-control-impact experiment, including recovery (potential reversibility) after the cessation of the predator stimulus. Differences in the size-independent body shape were explored using landmark-based geometric morphometrics and revealed that, on average, individuals exposed to a predatory cue presented deeper bodies and longer caudal regions, according to our adaptive theoretical predictions. These average plastic responses were reversible after withdrawal of the stimulus and individuals returned to average body shapes. We, therefore, provide evidence supporting innate reversible PIMDs in marine naive fish reared under controlled conditions. The effects at the individual level, including fitness and the associated applied implications, deserve further research.https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.191945sparus auratareversibilitypredator-induced morphological defencesgeometric morphometricspredator–prey dynamics |
| spellingShingle | Carlos Díaz-Gil Josep Alós Pablo Arechavala-Lopez Miquel Palmer Inmaculada Riera-Batle Amalia Grau Ignacio A. Catalán Reversible morphological changes in a juvenile marine fish after exposure to predatory alarm cues Royal Society Open Science sparus aurata reversibility predator-induced morphological defences geometric morphometrics predator–prey dynamics |
| title | Reversible morphological changes in a juvenile marine fish after exposure to predatory alarm cues |
| title_full | Reversible morphological changes in a juvenile marine fish after exposure to predatory alarm cues |
| title_fullStr | Reversible morphological changes in a juvenile marine fish after exposure to predatory alarm cues |
| title_full_unstemmed | Reversible morphological changes in a juvenile marine fish after exposure to predatory alarm cues |
| title_short | Reversible morphological changes in a juvenile marine fish after exposure to predatory alarm cues |
| title_sort | reversible morphological changes in a juvenile marine fish after exposure to predatory alarm cues |
| topic | sparus aurata reversibility predator-induced morphological defences geometric morphometrics predator–prey dynamics |
| url | https://royalsocietypublishing.org/doi/pdf/10.1098/rsos.191945 |
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