M

  • Management: The set of all technical practices and decisions applied to the culture (feeding, water, soil, health).

  • Market Size: The weight or size at which the animal is harvested and sold.

  • Metabisulphite (Sodium): An additive used in post-harvest processing to prevent melanosis (black spot) in shrimp.

  • Metabolite: A product of metabolism (e.g., ammonia, nitrite) or decomposition.

  • Metabolism: The sum of all chemical processes in the animal's body (e.g., digestion, respiration) that sustain life.

  • Molasses: An inexpensive source of organic carbon, used to stimulate heterotrophic bacteria and manage the C:N ratio in BFT systems.

  • Molt (Ecdysis): See Ecdysis.

  • Monk (Sluice): A concrete or masonry structure used to control the water level and drain a pond.

  • Monosex: The culture of only one sex (e.g., male tilapia), which performs better zootecnically.

  • Monitoring: The continuous tracking of water quality parameters and animal health/behavior.

  • Mortality: The number or percentage of animals that die during the cycle.

  • Mysis: A larval stage of shrimp, following the Zoea stage, which precedes the Post-Larva.