branchial arch

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Related to gill arch: Gill raker

branchial arch

[′braŋ·kē·əl ′ärch]
(vertebrate zoology)
One of the series of paired arches on the sides of the pharynx which support the gills in fishes and amphibians.
References in periodicals archive ?
acrodine cap, hypermineralized hard tissue on top of teeth (by 0rvig 1978); basal part, the lower, usually also wider part of a gill raker core; base, the lowest attachment structure, often with a spur-like projection; crown, the top of a tooth or of a gill-raker tubercle; cutting edge (by Cooper & Chapleau 1998), tooth row forming a sharp edge for biting; gill arch, the skeletal support of the gill which bears the gill filaments and the gill rakers; gill raker, bony or cartilaginous projection extending from a gill arch and covered with soft tissue (epithelium); gill raker core, bony mineralized substance of a gill raker; gill raker row, the gill rakers arranged in one or two rows on a gill arch (outer and inner row of Frame et al.
The maxilla and premaxilla are the bones over the palatoquadrate, and the dentary is the dermal bone over Meckel's cartilage (these, remember, were once the mandibular gill arch, situated in the second head segment).
mbuta, which exhibits pronounced modal differences in number of pectoral-fin rays (78% with 16 rays versus 48% in M arguni) and slightly higher number of rakers on the lower limb of the first gill arch (100% with 10-11 rakers versus 88% with 89 rakers in M.
Gill method: Hemostats were inserted into the mouth behind the last gill arch where the hookeye was grasped and pulled back between the gill arches toward the tail of the fish.
The number of glochidia attached to each gill arch was counted to estimate total gill burden.
Similarly, the drawing of the gill arch of the paratype was made without dissection by viewing through an opening in the branchiostegal membrane.