Event:1006

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Event Title

Young of year survival, Reduced

Key Event Overview

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AOPs Including This Key Event

AOP Name Event Type Essentiality
Deiodinase 2 inhibition leading to reduced young of year survival via posterior swim bladder inflation KE
Deiodinase 2 inhibition leading to reduced young of year survival via anterior swim bladder inflation KE
Deiodinase 1 inhibition leading to reduced young of year survival via posterior swim bladder inflation KE
Deiodinase 1 inhibition leading to reduced young of year survival via anterior swim bladder inflation KE
Thyroperoxidase inhibition leading to reduced young of year survival via anterior swim bladder inflation KE

Taxonomic Applicability

Name Scientific Name Evidence Links
zebrafish Danio rerio NCBI

Level of Biological Organization

Biological Organization
Individual

How this Key Event works

Young of year refers to young animals (usually fish) produced in one reproductive year, which have not yet reached one year of age. Small fish, hatched from eggs spawned in the current year, are considered young of year.

Young of year survival directly impacts population structure, growth and fitness. Maintenance of sustainable fish and wildlife populations is an accepted regulatory goal upon which risk assessments and risk management decisions are based.

How it is Measured or Detected

Young of year survival can be measured:

  • in the lab by recording survival during prolonged exposure experiments
  • in dedicated mesocosms, or in drainable ponds
  • in the field, for example by determining age structure after one capture, or by capture-tag-recapture efforts

Evidence Supporting Taxonomic Applicability

Survival is important for all species.

References