PUBLICATION
Thermally induced plasticity of body shape in adult zebrafish Danio rerio (Hamilton, 1822)
- Authors
- Georga, I., and Koumoundouros, G.
- ID
- ZDB-PUB-100820-25
- Date
- 2010
- Source
- Journal of morphology 271(11): 1319-1327 (Journal)
- Registered Authors
- Koumoundouros, Giorgos
- Keywords
- zebrafish, phenotypic plasticity, developmental temperature, sexual dimorphism, teleosts
- MeSH Terms
-
- Animals
- Embryo, Nonmammalian/anatomy & histology
- Embryo, Nonmammalian/embryology
- Female
- Larva/anatomy & histology
- Larva/growth & development
- Male
- Morphogenesis/physiology*
- Phenotype
- Temperature
- Zebrafish/anatomy & histology*
- Zebrafish/embryology
- Zebrafish/growth & development
- PubMed
- 20715149 Full text @ J. Morphol.
Citation
Georga, I., and Koumoundouros, G. (2010) Thermally induced plasticity of body shape in adult zebrafish Danio rerio (Hamilton, 1822). Journal of morphology. 271(11):1319-1327.
Abstract
We examined the effect of temperature during the early development on the phenotypic plasticity of Danio rerio. The effect of temperature was examined during two different early developmental periods of 280 degrees d (the product of days x temperature) each, 28-308 degrees d or 280-560 degrees d, by subjecting the experimental populations to three different water temperatures (22 degrees C, 28 degrees C, and 32 degrees C). Before and after the end of the 280 degrees d period of the different thermal exposure, all populations were cultured in standard temperature (28 degrees C). Five to 10 months after exposure to the different thermal regimes, the body shape of the adults was analyzed by geometric morphometrics. In both ontogenetic windows and experimental repetitions, the results showed that developmental temperature and sex significantly affected the body shape of adult zebrafish. Thermally induced shape variation discriminated the fish that developed at 22 degrees C from those developed at 28 degrees C-32 degrees C. In the early developmental period (DP1, 28-308 degrees d postfertilization), dorsal, anal, and caudal fin structures differed between the animals that developed at 22 degrees C and 28 degrees C-32 degrees C. In the later developmental period (DP2, 280-560 degrees d postfertilization), caudal, anal, pectoral, and pelvic fins, as well as the gill cover and lower jaw, were affected when animals developed at different temperatures. These results show that thermal history during a short period of embryonic and larval life affects the body form of adult zebrafish with potentially functional consequences. Based on previous data on the effects of temperature on fish development, we suggest thermally induced muscle and bone remodelling as possible mechanism underlying the observed plasticity.
Genes / Markers
Expression
Phenotype
Mutations / Transgenics
Human Disease / Model
Sequence Targeting Reagents
Fish
Orthology
Engineered Foreign Genes
Mapping