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• 1. [Article] Phenotypic Variation in the Model Organism, Danio Rerio

  Model organisms are used to study evolutionary conserved traits. Zebrafish (Danio rerio) are used a model organism because of their highly fecundity, external fertilization, and robust nature, making them ...

  Citation × Citation Citation Abstract Copy Title: Phenotypic Variation in the Model Organism, Danio Rerio Author: Champaigne, Rachel D, Brown, Kim H. Year: 2014 Model organisms are used to study evolutionary conserved traits. Zebrafish (Danio rerio) are used a model organism because of their highly fecundity, external fertilization, and robust nature, making them highly adaptable to environmental and genetic variation. In an effort to limit data variation that lies outside of topic interest, phenotypic measures of variation must be performed, understood, and taken into consideration for future studies. A common measurement of phenotypic variation in fish is in the maximum (Ucrit) swimming speeds. Inter and intra-strain variation in zebrafish Ucrit swimming speeds will be observed in a swim tunnel. Baseline values will be recorded from ten fish from each of two families in each of three strains: WIK, Tubigan and AB. Environmental variation in zebrafish raised (beginning at one month of age) in tanks with various volumes and densities of fish will also be recorded from each strain. Mitochondrial density in white muscle will be compared in each strain in each condition. Diet, take salinity, pH, temperature, and light exposure will all remain constant for all fish. Title: Phenotypic Variation in the Model Organism, Danio Rerio Author: Champaigne, Rachel D, Brown, Kim H. Year: 2014 Model organisms are used to study evolutionary conserved traits. Zebrafish (Danio rerio) are used a model organism because of their highly fecundity, external fertilization, and robust nature, making them highly adaptable to environmental and genetic variation. In an effort to limit data variation that lies outside of topic interest, phenotypic measures of variation must be performed, understood, and taken into consideration for future studies. A common measurement of phenotypic variation in fish is in the maximum (Ucrit) swimming speeds. Inter and intra-strain variation in zebrafish Ucrit swimming speeds will be observed in a swim tunnel. Baseline values will be recorded from ten fish from each of two families in each of three strains: WIK, Tubigan and AB. Environmental variation in zebrafish raised (beginning at one month of age) in tanks with various volumes and densities of fish will also be recorded from each strain. Mitochondrial density in white muscle will be compared in each strain in each condition. Diet, take salinity, pH, temperature, and light exposure will all remain constant for all fish. Close