Rainbow smelt (Osmerus mordax) influence on walleye (Sander vitreus) recruitment decline: mtDNA evidence supporting the predation hypothesis.
J Fish Biol
; 103(6): 1543-1548, 2023 Dec.
Article
em En
| MEDLINE
| ID: mdl-37551915
ABSTRACT
Rainbow smelt (Osmerus mordax) have been introduced widely but are associated with declines in walleye (Sander vitreus) recruitment. A primary hypothesis for these declines is that O. mordax consume larval S. vitreus. We confirmed overlapping spatial-temporal distributions of larval S. vitreus and O. mordax in our study system and used mtDNA analyses to determine if O. mordax stomach contents contained S. vitreus. Approximately 20% of O. mordax composite stomach samples were considered positive for S. vitreus consumption. These findings support the predation hypothesis and have S. vitreus management/stocking implications.
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Texto completo:
1
Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Percas
/
Osmeriformes
Limite:
Animals
Idioma:
En
Revista:
J Fish Biol
Ano de publicação:
2023
Tipo de documento:
Article
País de afiliação:
Estados Unidos