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Year class (age class)
Fish within a stock or population that were spawned in the same season.
What is produced by natural means or after cultivation. In the case of a fishery, the term usually refers to the amount of fish that can be sustainably taken from it.


A crustacean larvae.
One of the distinct individuals forming the colony of animals such as bryozoans and the hydrozoans.
Small free-floating or weak-swimming animals.
Single-celled algae that lives in the tissues of invertebrates such as corals, clams and some sponges and carries out photosynthesis.
The cell formed in sexual reproduction when two gametes combine.


Last modified: 11/09/2012 11:51 AM

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