The FSBINew research assessing resource use as a predictor for #Atlanticsalmon #smolt body size using #StableIsotopes: doi.org/10.1111/jfb.70142 #JFB
More salmon! This time from Natalie Koopman, working on #CapeBreton (#NovaScotia) Atlantic salmon, which have sene steep declines. #Hatcheries have been used for decades, here. Smolt to adult supplementation is where #salmon live in the #river at younger life stages, but are then brought into the hatchery during #smolt. 64 tagged salmon showed that the longer the fish spent in captivity the higher survival in the wild, but those that spent less time (1 year) in captivity moved upstream #FSBI2025
Warren Currie 🦠🦐These interesting devices, technically called rotary screw traps (RST) or auger trap, are passive sampling gear, using water flow to capture and retain downstream migrating #fish. It works using an Archimedes screw as its central axis.
It is commonly called a smolt wheel because it targets the small #smolt stage of #Salmon for counts and non-lethal collection. They have been deployed extensively in Pacific coast, Atlantic Canada, and in the #GreatLakes.
#science
https://www.cbc.ca/news/canada/newfoundland-labrador/smolt-wheel-1.7219197
Domino JoyceWe used #outlieranalysis and #telemetry and found that migration success of Atlantic #salmon depended on genotype. See what you think:
https://www.biorxiv.org/content/10.1101/2023.08.15.553252v1
(boosts welcome, first time I’ve properly tried to share some science since the other place)
#EvolutionaryBiology
#FishSci
#smolt
#AnimalMigration
#SNPmarkers
#salmonid
#Freshwater
Photo: Stuart Brabbs, Ayrshire Rivers Trust