Fig. 1From: Exposure to microplastic fibers does not change fish early life stage development of three-spined sticklebacks (Gasterosteus aculeatus)Heart rates of stickleback embryos at day five post fertilization in beats per minute (bpm). Data show mean values (± standard deviation) of 10 embryos per half egg clutch. Different letters indicate statistical differences between egg clutches (ANOVA with post-hoc Tukey test (p < 0.05))Back to article page