Respiratory Development of Two Teleost Fish, Oncorhynchus mykiss and Scophthalmus maximus During Their Early Life History ...

• Main Author: Burdass, Mark Christopher
• Format: Text
• Language: unknown
• Published: University of Plymouth 1993
• Subjects: Scophthalmus maximus
• Online Access: https://dx.doi.org/10.24382/2387; https://pearl.plymouth.ac.uk/handle/10026.1/2547

The respiratory development of two species of teleost, Oncorhynchus mykiss and Scophthalmus maximus was investigated to identify any possible periods of reduced respiratory fitness during early development. The two species were selected because of their different development strategies to allow any common factors in respiratory development to be identified. The study included determination of the respiratory oxygen demand and the critical oxygen tension (Pc) through early development for both species. Respiratory oxygen demand was measured as a routine rate (rVO2) with individual and weight specific values being determined. The main respiratory surface areas for both species were measured, this included the gills; body area; fin area and yolk-sac area in the case of O. mykiss. Changes in the rate of development was monitored by determining the mass and length specific development relationships. Significant changes in body fin and yolk-sac area occurred at approximately 70mg yolkless wet weight. for O. ...