Are digestive enzymes activities affected by starvation and low oxygen conditions in bivalves?
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Digestive enzyme activities in bivalves can be significantly affected by both starvation and low oxygen conditions. Starvation has been shown to decrease various digestive enzyme activities in mussels, while low dissolved oxygen levels can lead to changes in stable isotope ratios in oysters, indicating a starvation response where tissues are catabolized. Additionally, hypoxia can trigger molecular responses related to autophagy, apoptosis, and inflammation in bivalves like mussels and oysters. Furthermore, infaunal clams like Arctica islandica regulate internal oxygen levels to enhance nitric oxide (NO) accumulation, which can depress metabolic rates by inhibiting cytochrome-c-oxidase activity. Therefore, both starvation and low oxygen conditions play crucial roles in altering digestive enzyme activities and metabolic responses in bivalves.
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| Papers (5) | Insight |
|---|---|
8 Citations | Not addressed in the paper. |
| Starvation under low oxygen conditions can impact digestive enzyme activities in bivalves, as seen in oysters with increased δ15N values indicating tissue catabolism due to physiological stress. | |
17 Citations | Starvation and low oxygen conditions can affect digestive enzyme activities in bivalves, as seen in the study's assessment of cathepsin D activity during hypoxia-reoxygenation stress. |
| Yes, during starvation, lysosomal enzymes (acid phosphatase and arylsulfatase) were detected in bivalves, indicating symbiont digestion. Low oxygen conditions were not specifically addressed in the paper. | |
2 Citations | Not addressed in the paper. |
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