Results for “gill”

gill

Respiratory organ of fishes and some other aquatic organisms comprising a highly-vascularised membrane or outgrowth.

Used in 314 profiles

gill opening

Opening connecting the gill chamber to the exterior environment. Also referred to as the gill slit.

Used in 83 profiles

gill raker

Any of the bony processes located on the gill arch which function to either retain food items or otherwise prevent solid matter from entering the gill chamber. Vary in number and size depending on taxon and therefore useful in identification.

Used in 88 profiles

gill arch

Bony or cartilaginous arch in the pharynx to which the gill filaments and rakers are attached.

Used in 162 profiles

gill chamber

Chambers located on either side of the head into which the gill filaments project.

Used in 2 profiles

gill filament

Comb-like lamellae found in the gills, through which oxygen is extracted and carbon dioxide expelled.

Used in 38 profiles

gill net

Type of net normally suspended vertically in such a way that fish become ensnared by their gills.

operculum

Flap composed of 4 bones that covers, supports and protects the gill opening in many fishes. Also known as gill flap or gill cover.

Used in 64 profiles

branchial cavity

Cavity located inside the mouth and enclosing the gills; also known as 'gill cavity'.

arthrobranch

A decapod gill associated with the articular membrane between the coxa of an appendage and the body.

basibranchial teeth

Teeth on the median ventral plate (base of the tongue) overlying the basibranchial bones between the gill arches in some fishes.

branchial

Relating to, of, or resembling the gills of a fish.

Used in 5 profiles

branchial arch

One of the bony or cartilaginous arches situated on either side of the pharynx that form the support for the gills.

Used in 2 profiles

branchiostegal membrane

The membrane, sometimes referred to as the gill membrane, connecting the branchiostegal rays and enclosing the ventral portion of the branchial cavity. Normally extended when the opercle of a fish is open, sealing the branchial cavity and creating a vacuum in the mouth, and also used during threat, courtship and other communicative behaviours in many species.

Used in 5 profiles

buccal cavity

Cavity located inside the mouth, above the gill arches. Also referred to as 'mouth cavity'.

Used in 10 profiles

Chilonodella

Genus of unicellular, ciliated protozoa; some species are parasites of the skin and gills in freshwater fishes.

columnaris

Disease symptom resulting from infection by the bacterium Flavobacterium columnare which is ubiquitous in freshwater environments. Often mistaken for a fungal infection due to its appearance and is referred to variously as mouth rot, mouth fungus, fin rot, gill fungus, body fungus, saddleback columnaris, and cotton wool disease. Highly contagious and usually fatal unless treated with antibiotics or other.

Used in 1 profile

costiasis

Disease of freshwater fishes caused by species of parasitic flagellate protozoa from the genus Ichthyobodo and more accurately referred to as ichthyobodiosis. It attacks the gills, fins and skin with symptoms including an increase body mucus secretion giving rise to the vernacular term 'skin slime disease'. Can be treated using proprietary products but frequently fatal otherwise.