Upstream eventReduced, Hearing
Reduced, Young of year survival
Key Event Relationship Overview
AOPs Referencing Relationship
|AOP Name||Directness||Weight of Evidence||Quantitative Understanding|
|Deiodinase 2 inhibition leading to reduced young of year survival via posterior swim bladder inflation||directly leads to|
|Deiodinase 2 inhibition leading to reduced young of year survival via anterior swim bladder inflation||directly leads to|
|Deiodinase 1 inhibition leading to reduced young of year survival via posterior swim bladder inflation||directly leads to|
|Deiodinase 1 inhibition leading to reduced young of year survival via anterior swim bladder inflation||directly leads to|
|Thyroperoxidase inhibition leading to reduced young of year survival via anterior swim bladder inflation||directly leads to|
Life Stage Applicability
How Does This Key Event Relationship Work
Impaired hearing could result in an impact on ecologically relevant endpoint, such as predator avoidance and prey capture. Therefore, it can be assumed that an affect on hearing could reduce young of year survival.
Weight of Evidence
- In birds, acoustic signals play key roles in territory defense and mate attraction (Slabbekoorn and Ripmeester, 2008).
Roles of Acoustic signaling in fish (reviewed by Kasumayan 2009):
- Reproductive isolation - among fish capable of generating sound, sound emission during spawning is the most prominent life stage during which acoustic signaling occurs. Includes mate attraction, courtship, establishment of territory.
- Defensive sounds - fright and stress, alert conspecifics to potential threats.
- Organization of group/aggregative behaviors
- Feeding behaviors - in many fish conditioned reflex to the sounds of conspecifics feeding can be formed and cause orientation or attraction of fish toward their source, particularly in combination with corresponding visual stimuli and odors.
Empirical Support for Linkage
Uncertainties or Inconsistencies
Quantitative Understanding of the Linkage
Evidence Supporting Taxonomic Applicability
- Kasumayan AO. 2009. Acoustic signaling in fish. J. Ichthyology. 49:963-1020.
- SLABBEKOORN, H. and RIPMEESTER, E. A. P. (2008), Birdsong and anthropogenic noise: implications and applications for conservation. Molecular Ecology, 17: 72–83. doi:10.1111/j.1365-294X.2007.03487.x