Data from: Effects of perceived predation risk and social environment on the development of three-spined stickleback (Gasterosteus aculeatus) morphology
Ab Ghani, Nurul I., University of Helsinki
Herczeg, Gábor, Eötvös Loránd University, University of Helsinki
Merilä, Juha, University of Helsinki
Published Dec 07, 2015 on Dryad.
Cite this dataset
Ab Ghani, Nurul I.; Herczeg, Gábor; Merilä, Juha (2015). Data from: Effects of perceived predation risk and social environment on the development of three-spined stickleback (Gasterosteus aculeatus) morphology [Dataset]. Dryad. https://doi.org/10.5061/dryad.ps326
Phenotypically plastic changes in response to variation in perceived predation risk are widespread, but little is known about if and how social environment modulates induced responses to predation risk. We investigated the influence of perceived predation risk (i.e. chemical cues from a predator) and social environment (i.e. one, two or 20 individuals reared together) on three-spined stickleback (Gasterosteus aculeatus) morphology in a factorial common garden experiment. We found that exposure to chemical cues from potential predators did not influence growth or body condition or induce more robust morphological defences (i.e. lateral plate numbers and dorsal spine lengths). However, sticklebacks exposed to predator cues developed longer caudal peduncles and larger eyes as compared with fish from the control treatment. As these responses may improve sticklebacks’ ability to avoid piscine predation, they might be adaptive. Social environment/density also influenced expression of some traits, but these effects were independent of predation-risk treatment effects. In general, these results suggest that apart from the classic morphological defence structures, which appear mostly constitutive, three-spined sticklebacks are capable of expressing potentially adaptive morphological responses to chemical cues from potential predators.
Three-spine stickleback morphology
This file contains the primary data underlying the analyses described in the published article. The first tab of the file includes explanation of the variables (columns) in the second tab which contains the data.