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Government of Western Australia - Department of Fisheries

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Australian Bureau of Agricultural Resource Economics
Non living; due to physical, chemical or geological processes.

Abalone Mangement Advisory Committee

Abrolhos Islands
The Houtman Abrolhos Islands. An archipelago of islands lying 65-90 kilometres off Geraldton, on the coast of Western Australia.

Number of fish in a stock or population.

Plentiful, more than enough.

Abyssal plain
A large area of flat or gently sloping sea floor in the deepest parts of oceans.

Australian Competition & Consumer Commission

Happening by chance or unexpectedly or unintentionally.

Accretion (deposition)
The gradual extension of land by natural forces, as in the addition of sand to a beach by ocean currents.

A substance that yields a relatively high concentration of hydrogen ions when dissolved in water and has a pH less than 7.

Acid Sulphate Soils (ASS)
Soils containing iron sulfides, that when exposed to air after being disturbed, produce sulfuric acid and often release toxic quantities of iron, aluminium and heavy metals.

Acoustic tag
A sound-emitting device that allows the detection and/or remote tracking of fish in three dimensions.

Aquaculture Council of WA

Evolutionary process whereby a population becomes better suited to its habitat or changing environment

Aquaculture Development Council

Adductor muscle
Muscle, which holds together the shells of molluscs or shellfish.

Aquaculture Development Fund

Adult (fish)
Mature fish capable of breeding.

To charge water with oxygen.

In the presence of oxygen.

Australian Fisheries Management Authority

See Australian Fishing Zone

Age structure
The number of fish of different ages within a population.

Aggregation (fish)
The behavioural grouping of animals in a high concentration for reasons such as the concentration of food organisms or spawning.

Abrolhos Islands Management Advisory Committee

Australian Indonesia Maritime Delimitation Treaty

Australian Institute of Marine Science

Automatic Location Communicator

Aquatic plant-like organisms.

Algal bloom
Rapid and excessive growth of algae, generally caused by high nutrient levels and favourable conditions.

A substance that yields a relatively high concentration of hydroxide ions when dissolved in water to raise the pH value above 7.0.

The capacity of water for neutralizing an acid solution.

Two species of large reptiles belonging to the order Crocodilia. They differ from crocodiles in having a broader, shorter snout.

Dissolved toxin released by metabolism. Produced by fish and is harmful if levels allowed to build up especially in aquariums.

Australian Marine Science Association

In the absence of oxygen.

Anal fin
The last ventral fin of fishes.

Shape, form and structure of plants and animals.

Australian Nature Conservation Authority

The art of fishing with a rod.

Invertebrates that display an elongate body with distinct segmentation and a digestive tract that lies in the coelom.

Oxygen absent, or too low to support life

Antenna (Antennae)
A sensory organ found in pairs on the heads of insects and crustaceans.

in crustaceans, the first pair of feelers, usually sensory in function.

the region of the body that is related to the front or head end of an organism.

the process of removing the accumulation, or preventing the accumulation, of micro-organisms, plants, algae and animals on submerged structures, especially ships’ hulls.

Australia, New Zealand Food Authority

Apex predator
animal that sits at the top of a food chain, usually with no natural predators once it had reached its adult stage.

Aphotic zone
the region below the photic zone, where light is absent.

a functional projection from a animal surface.

Australian Quarantine Inspection Service

Commonly termed ‘fish farming’ but broadly the commercial growing, holding or breeding of marine (mariculture) or freshwater animals and aquatic plants.

Organism living or growing in or near water

An ocean or sea with many islands.

Area closure
The closure of a fishing ground, or part thereof, used as a tool in the management of a fishery.

Area swept
In reference to a demersal trawl, it is the area of the sea floor over which the net is dragged during its operation, and is estimated by multiplying the width of the net mouth by the distance the net is dragged.  From data on the densities of fish caught in a unit area swept, an estimate of the biomass in that area can be obtained.

A genus of crustacea found in salt lakes. Brine shrimp.

Invertebrate with jointed appendages and a chitinous, segmented exoskeleton.

Tunicates with a typically sac-like, attached body as adults.

Asexual reproduction
A type of reproduction that employs means such as budding or binary fission, rather than the union of an egg and sperm.

Recognisable grouping or collection of individuals or organisms.

Taken for granted or accepted as true without proof.

Australian Exclusive Economic Zone
Australia’s exclusive economic zone extends from the outer edge of the territorial sea up to 200 nautical miles from the territorial sea baseline.

Australian Fishing Zone (AFZ)
200 nautical mile (nm) wide zone around the Australian coastline withing which control over domestic and foreign access to resources is maintained.

An organism that can capture energy to manufacture its own food from raw materials.

Axis (Earth’s)
The imaginary line going through the north and south poles around which the earth spins.


Last modified: 27/11/2012 11:49 AM

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