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PROFILESEARCH

Glossary: F0

February 22nd, 2012 — 10:17am

Not an official term in genetics, but often used in reference to the founder, or parental, generation in a line of captive-bred organisms. Also used in aquarium literature to refer to wild caught fishes or a pair or group of assumedly unrelated individuals being used for breeding purposes.

Glossary: F1

February 22nd, 2012 — 10:40am

Term used in the fields of genetics and selective breeding in reference to the first filial generation, i.e., hybrid offpsring, of a cross between two distinctly different parental lines. Often used in aquarium literature to refer to offspring of F0 parents whether of the same species or not.

Glossary: F2

February 22nd, 2012 — 10:55am

Offspring of the second filial generation, resulting from a cross between F1 individuals. Future such generations are termed F3, F4, etc..

Glossary: facultative

February 17th, 2012 — 3:53pm

Capable of functioning or existing under varying environmental conditions.

Glossary: falcate

February 17th, 2012 — 3:53pm

Sickle-shaped.

Glossary: family

February 17th, 2012 — 3:53pm

Taxonomic rank below order and above genus. Contains one or more genera.

Glossary: fang

February 17th, 2012 — 3:53pm

Relatively long, sharp, pointed tooth.

Glossary: fanning

February 17th, 2012 — 3:53pm

Process of moving water over eggs or fry via rapid movement of the fins, thus aerating or removing solid particles from them.

Glossary: fecund

February 22nd, 2012 — 10:57am

Producing or capable of producing offspring or vegetation. Sometimes used in reference to particularly productive organisms.

Glossary: fecundity

February 17th, 2012 — 3:53pm

Fertility.

Glossary: feeder fish

February 17th, 2012 — 3:53pm

Live fish used specifically for feeding to another fish.

Glossary: feral

February 17th, 2012 — 3:53pm

Existing in a wild or uncultivated state; returning or transferring to such a state having previously been domesticated.

Glossary: fertile

February 17th, 2012 — 3:53pm

Capable of reproduction.

Glossary: fertility

February 17th, 2012 — 3:53pm

The state of being fertile.

Glossary: filament

February 17th, 2012 — 3:53pm

Thread-like, slender process or appendage; thin chain of cells.

Glossary: filamentous

February 17th, 2012 — 3:53pm

Of, relating to, or resembling a filament.

Glossary: filial

February 22nd, 2012 — 10:41am

Of, relating to or being a generation or the series of generations following the parental (F0) generation.

Glossary: filiform

February 17th, 2012 — 3:53pm

Threadlike; shaped like a filament.

Glossary: filter

February 17th, 2012 — 3:53pm

Device through which water is passed in order to remove suspended solid particles (mechanical filtration) or chemical impurities (biological filtration); any device which assists in maintenance of water quality.

Glossary: filter feeding

February 17th, 2012 — 3:53pm

Feeding behaviour in which solid, organic particles are filtered from the surrounding water. Normally involves some degree of specialised morphology.