Physiological response to seawater pH of the bivalve Abra alba, a benthic ecosystem engineer, is modulated by low pH.
Mar Environ Res
; 179: 105704, 2022 Jul.
Article
en En
| MEDLINE
| ID: mdl-35850076
ABSTRACT
The presence and behaviour of bivalves can affect the functioning of seafloor sediments through the irrigation of deeper strata by feeding and respiring through siphonal channels. Here, we investigated the physiological response and consecutive impact on functioning and body condition of the white furrow shell Abra alba in three pH treatments (pH = 8.2, pH = 7.9 and pH = 7.7). Although no pH effect on survival was found, lowered respiration and calcification rates, decreased energy intake (lower absorption rate) and increased metabolic losses (increased excretion rates) occurred at pH â¼ 7.7. These physiological responses resulted in a negative Scope for Growth and a decreased condition index at this pH. This suggests that the physiological changes may not be sufficient to sustain survival in the long term, which would undoubtedly translate into consequences for ecosystem functioning.
Palabras clave
Texto completo:
1
Banco de datos:
MEDLINE
Asunto principal:
Bivalvos
/
Ecosistema
Límite:
Animals
Idioma:
En
Revista:
Mar Environ Res
Asunto de la revista:
BIOLOGIA
/
SAUDE AMBIENTAL
/
TOXICOLOGIA
Año:
2022
Tipo del documento:
Article