Swimming down-regulates ovarian transcriptomic response of rainbow trout Oncorhynchus mykiss

ABSTRACT: Metabolic processes and sexual maturation closely interact during the long-distance reproductive migration of many fish species to their spawning grounds. In the present study, we have for the first time used exercise experimentally to investigate the effects on sexual maturation in rainbow trout. Pubertal autumn-spawning seawater-raised female rainbow trout Oncorhynchus mykiss (n=26; 50-cm, 1.5-kg) were rested or swum at a near optimal speed of 0.75 body-lengths per second in a 6,000 L swim-flume under natural reproductive conditions (16 °C fresh-water, starvation, 8h-light:16h-dark photoperiod). Fish were sampled after arrival and subsequently after 10 days (resting or swimming 307 km) and 20 days (resting or swimming 636 km). Ovarian development was significantly reduced in the swimmer

ORGANISM(S): Oncorhynchus mykiss

SUBMITTER: Josep Planas 

PROVIDER: E-GEOD-20131 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress