A - B - C - D - E - F - G - H - I - J - K - L - M - N - O - P - Q - R - S - T - U - V - W - X - Y - Z
X
-
Y
Year class (age class)
Fish within a stock or population that were spawned in the same season.
Yield
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.
Z
Zoea
A crustacean larvae.
Zooids
One of the distinct individuals forming the colony of animals such as bryozoans and the hydrozoans.
Zooplankton
Small free-floating or weak-swimming animals.
Zooxanthellae
Single-celled algae that lives in the tissues of invertebrates such as corals, clams and some sponges and carries out photosynthesis.
Zygote
The cell formed in sexual reproduction when two gametes combine.