PUBLICATION
Statistical Analysis of Zebrafish Locomotor Response
- Authors
- Liu, Y., Carmer, R., Zhang, G., Venkatraman, P., Brown, S.A., Pang, C.P., Zhang, M., Ma, P., Leung, Y.F.
- ID
- ZDB-PUB-151006-1
- Date
- 2015
- Source
- PLoS One 10: e0139521 (Journal)
- Registered Authors
- Leung, Yuk Fai, Venkatraman, Prahatha
- Keywords
- Larvae, Zebrafish, Biological locomotion, Embryos, Statistical data, Analysis of variance, Test statistics, Photoreceptors
- MeSH Terms
-
- Analysis of Variance
- Animals
- Behavior, Animal/radiation effects
- Female
- Light
- Male
- Models, Biological*
- Photic Stimulation
- Swimming*
- Zebrafish/embryology
- Zebrafish/growth & development
- Zebrafish/physiology*
- PubMed
- 26437184 Full text @ PLoS One
Citation
Liu, Y., Carmer, R., Zhang, G., Venkatraman, P., Brown, S.A., Pang, C.P., Zhang, M., Ma, P., Leung, Y.F. (2015) Statistical Analysis of Zebrafish Locomotor Response. PLoS One. 10:e0139521.
Abstract
Zebrafish larvae display rich locomotor behaviour upon external stimulation. The movement can be simultaneously tracked from many larvae arranged in multi-well plates. The resulting time-series locomotor data have been used to reveal new insights into neurobiology and pharmacology. However, the data are of large scale, and the corresponding locomotor behavior is affected by multiple factors. These issues pose a statistical challenge for comparing larval activities. To address this gap, this study has analyzed a visually-driven locomotor behaviour named the visual motor response (VMR) by the Hotelling's T-squared test. This test is congruent with comparing locomotor profiles from a time period. Different wild-type (WT) strains were compared using the test, which shows that they responded differently to light change at different developmental stages. The performance of this test was evaluated by a power analysis, which shows that the test was sensitive for detecting differences between experimental groups with sample numbers that were commonly used in various studies. In addition, this study investigated the effects of various factors that might affect the VMR by multivariate analysis of variance (MANOVA). The results indicate that the larval activity was generally affected by stage, light stimulus, their interaction, and location in the plate. Nonetheless, different factors affected larval activity differently over time, as indicated by a dynamical analysis of the activity at each second. Intriguingly, this analysis also shows that biological and technical repeats had negligible effect on larval activity. This finding is consistent with that from the Hotelling's T-squared test, and suggests that experimental repeats can be combined to enhance statistical power. Together, these investigations have established a statistical framework for analyzing VMR data, a framework that should be generally applicable to other locomotor data with similar structure.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping