Invasion status of hatchery-origin pink salmon in an unstocked river at the Shiretoko World Natural Heritage Site in northern Japan.
J Fish Biol
; 104(5): 1633-1637, 2024 May.
Article
in En
| MEDLINE
| ID: mdl-38374535
ABSTRACT
Hatchery fish and their offspring (including hatchery-wild hybrids) have lower reproductive success than wild fish. Thus, the straying of hatchery fish may negatively impact wild populations, depending on the number of wild salmon returning and hatchery strays. We investigated the straying status of hatchery-origin pink salmon (Oncorhynchus gorbuscha), which have a higher straying rate than other salmonids, in an unstocked river at the Shiretoko World Natural Heritage Site, Japan. The hatchery strays accounted for 40.0% and 19.0% of the total samples in 2021 and 2022, respectively. These results indicate that hatchery pink salmon have invaded unstocked rivers and potentially genetically affect wild populations.
Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Salmon
/
Rivers
/
Introduced Species
Limits:
Animals
Country/Region as subject:
Asia
Language:
En
Journal:
J Fish Biol
/
J. fish biol
/
Journal of fish biology
Year:
2024
Document type:
Article
Affiliation country:
Country of publication: