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B
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The weight (biomass) of a group of fish necessary to produce maximum sustainable yield (MSY).
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bacteriophage
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A virus that invades and destroys (eats) host bacteria.
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barbell
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A fleshy, flap like or whisker like appendage (very small and hard to see on some minnows) found near the mouth. Used as a sensory organ. A good example is on the shovelnose sturgeon.
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bathypelagic zone
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The zone of the ocean that extends from 1,000 m to 4,000 m below the surface of the ocean. Compare abyssopelagic zone and mesopelagic zone.
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BCSGA
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British Columbia Salmon Growers Association (Canada).
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benthic
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Or, related to, or living in the soil-water interface of a stream, lake, or ocean; bottom dwelling. See also substrate; compare nekton.
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bimodal distribution
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Indicating two length groups within which individuals are most abundant, possibly with other less abundant length groups around them.
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biodiversity
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The variation in life on earth reflected at all levels, from various ecosystems and species to the genetic variation within a species. See also ecosystem diversity, genetic diversity, and species diversity.
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bioluminescence
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Meaning living (bio) light (luminescence). The light produced by living organisms and the emission of such biologically produced light. Also commonly referred to as "phosphorescence."
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biotic factor
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A living component of the environment which arises from and affects living organisms (distinct from physical factors). For example, the interaction between predators and prey is a biotic interaction. Compare abiotic factor.
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biotoxins
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Neuropoisons that can cause illness or death in humans and animals that consume products from the sea.
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BKD
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Bacterial kidney disease.
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BMP
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Best management practice.
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BMSY
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The weight (biomass) of a group of fish necessary to produce maximum sustainable yield (MSY).
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body depth
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The greatest vertical distance between the midline of the back and the midline of the belly; the "height" of the fish.
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body width
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The greatest distance from one side of the body to the other.
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broodstock
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A group of mature fish that is kept separate and used for producing fry.
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BRT
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Biological Review Team. A team of scientists formed to conduct a status review of a species.
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