Early Life Stages definition

Early Life Stages of fish means the pre-hatch embryonic period, the post-hatch free embryo or yolk-sac fry, and the larval period, during which the organism feeds. Juvenile fish, which are anatomically rather similar to adults, are not considered an early life stage.
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Early Life Stages means life stages for fish which include all embryonic and larval stages, and all juvenile forms to 30 days following hatching.
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Early Life Stages or “ELS” means the life stages of fish that include the pre−hatch embryonic period, post−hatch free embryo or yolk−sac fry, and the larval period, during which the fish feeds. Juvenile fish, which are anatomically similar to adults, are not considered an early life stage. The duration of the early life stage extends from the beginning of spawning through the end of the larval period.
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Examples of Early Life Stages in a sentence

  • Early Life Stages Present Total Ammonia Nitrogen criteria apply [10 CSR 20-7.031(5)(B)7.C. & Table B3].

  • At a minimum, the "Fish Early Life Stages are Present" criterion will apply from the beginning of spawning through the end of the early life stages.

  • The Division will maintain information regarding the waterbodies and time periods where application of the "Early Life Stages are Absent" criterion is determined to be appropriate.

  • This amendment contains ammonia objectives to protect Early Life Stages (ELS) of fish in inland surface water supporting aquatic life.

  • Chronic Criterion for Ammonia in Iowa Streams - Early Life Stages Absent Chronic Criterion - Early Life Stages Absent, mg/l as N (or Criterion Continuous Concentration, CCC) *At 15°C and above, the criterion for fish early life stage (ELS) absent is the same as the criterion for fish ELS present.TABLE 4.

  • Protection for Early Life Stages for Resident Tidal-Fresh Species.

  • The "Fish Early Life Stages are Present" 30-day average total ammonia criterion will be applied by default unless it is determined by the Division, on a site-specific basis, that it is appropriate to apply the "Fish Early Life Stages are Absent" 30-day average criterion for all or some portion of the year.

  • All vessels in coastal waters will operate in a manner to minimize propeller wash and seafloor disturbance and transiting vessels should follow deep-water routes (e.g., marked channels), as practicable, to reduce disturbance to sturgeon and sawfish habitat.PDC 2: Avoid Activities that Could Affect Early Life Stages of Atlantic Sturgeon BMP:1.

  • The following seasons will be used in applying the early life stage present chronic criteria noted in Table 3b, “Chronic Criterion for Ammonia in Iowa Streams - Early Life Stages Present.”1.

  • Pilot Test: Rainbow Trout Early Life Stages In-situ Bioassay, Final Report submitted to Brown and Caldwell.


More Definitions of Early Life Stages

Early Life Stages means all embryonic and larval stages and all juvenile forms of aquatic life to 30 days following hatching.
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Early Life Stages of fish means the pre-hatch embryonic period, the post-hatch free embryo or yolk-sac fry, and the larval period, during which the organism
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Related to Early Life Stages

  • life cycle means all consecutive and/or interlinked stages, including research and development to be carried out, production, trading and its conditions, transport, use and maintenance, throughout the existence of the product or the works or the provision of the service, from raw material acquisition or generation of resources to disposal, clearance and end of service or utilisation;

  • Yearly (1/Year) sampling frequency means the sampling shall be done in the month of September, unless specifically identified otherwise in the effluent limitations and monitoring requirements table.

  • Yearly (1/Year) sampling frequency means the sampling shall be done in the month of September, unless specifically identified otherwise in the effluent limitations and monitoring requirements table.