Post WFTS Transport: Adult Survival and Egg Rates Reproducible Across 3 Years (2016)

the question
the conclusion
the question

Yakama Nation Laboratory

Dave Fast, Mark Johnson, Bill Bosch

Spring Chinook

Comparing hand carriage versus 40 ft Whooshh transport followed by hatchery truck haul. Are the adult survival and egg viability rates comparatively reproducible? An evaluation of three-years worth of data.

the conclusion

Yes. Although the environmental conditions varied considerably across the three years of study (2014, 2015 and 2016), the impact did not affect the comparative adult survival and rates within a given year.

There was no statistical difference in adult survival rates between the hand carriage and 40 ft Whooshh tube transport. Egg viability rates were not influenced by environmental conditions and remained very high, >92% across all groups and years. The outcomes support the conclusion that the WFTS is are liable, durable, viable alternative to the standard hand-walking transport method from the fish safety perspective and provides a reduced risk benefit to the fish of damage due to accidental dropping. 

From the fish handler perspective, the WFTS is easy to use, fast, may reduce potential fish injury, and adds a measure of safety for the fish handler. The results of this comprehensive comparative study strongly endorses the recommendation of WFTS use for safe transport of live fish.

study report