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Event: 1142
Key Event Title
Increased, valve movement
Short name
Biological Context
Level of Biological Organization |
---|
Tissue |
Organ term
Key Event Components
Process | Object | Action |
---|---|---|
musculoskeletal movement | valve | increased |
Key Event Overview
AOPs Including This Key Event
AOP Name | Role of event in AOP | Point of Contact | Author Status | OECD Status |
---|---|---|---|---|
5-HTT block to population decline | KeyEvent | Agnes Aggy (send email) | Under Development: Contributions and Comments Welcome | |
5-HTT leading to population decline | KeyEvent | Allie Always (send email) | Under Development: Contributions and Comments Welcome | |
5-HTT inhibition leading to population increase | KeyEvent | Evgeniia Kazymova (send email) | Under Development: Contributions and Comments Welcome | |
5-HTT leading to population increase | KeyEvent | Agnes Aggy (send email) | Under Development: Contributions and Comments Welcome |
Taxonomic Applicability
Term | Scientific Term | Evidence | Link |
---|---|---|---|
bivalves | Crassostrea corteziensis | NCBI |
Life Stages
Sex Applicability
Key Event Description
In bivalves, the muscle involved in valve movement is the anterior byssus retractor muscle (ABRM). This muscle and other muscles can undergo a catch state of contraction, which is characterized by a very slowly decaying force in the absence of stimulation. When contraction of the ABRM (and other catch-capable muscles) is initiated by the neurotransmitter acetylcholine, it contracts actively and remains in the contracted state with minimal energetic investment (Güth et al. 1984; Butler et al. 1998) even after the acetylcholine stimulation has ceased and internal calcium stores are returned to basal levels(Ishii et al. 1989). This unique physiology allows the muscle to maintain a closed valve without depleting energy reserves. In mollusks, the catch state is terminated by serotonin.