gill raker

gill raker

[′gil ‚rāk·ər]
(vertebrate zoology)
One of the bony processes on the inside of the branchial arches of fishes which prevents the passage of solid substances through the branchial clefts.
References in periodicals archive ?
Measurements were made on 31 morphological characters, including standard length, which generally followed those described by Nakabo (2002a) except for the following: body depth 1 and 2 as defined by Kai and Nakabo (2002); upper peduncle length, lower peduncle length, spinous dorsal-fin base length, soft dorsal-fin base length, prepelvic length, and gill raker length as defined by Chen (1971); body width was taken as the distance between the uppermost bases of the right and left pectoral fins; pelvic-to-anal-fin length was taken as the distance from the anteriormost base of the pelvic fin to the origin of the anal fin.
fin ray, scale, teeth, gill raker, and lateral line pore counts).
Care was taken to avoid catheter contact with the gill raker and scaphognathite.
The methods of counting and measuring are as follows: dorsal and anal rays--the last ray of the anal and second dorsal fins is divided at the base and counted as a single ray; gill raker count--number of gill rakers on the first branchial arch.
Based on correlations of vertebral and gill raker dimensions with the total length for Recent C.
3% SL); the slightly upturned mouth; high total gill raker count (23-34, mean 28.
Among morphometric characters of specimens with all characters, snout length, suborbital depth, gill raker length, body depth at analfin origin, body depth at anal-fin insertion, dorsal-fin spine 1 length, dorsal-fin spine 4 length, pectoral-fin ray length, pelvic-fin ray length, pelvic-fin spine length, anal-fin spine 1 length, anal-fin spine 2 length, anal-fin spine 3 length, preanal length, and soft-dorsal-fin base length differed significantly between S.
Gill raker counts are from the first gill arch (usually on the right side), and the raker at the angle is included in the lower-limb count; rudimentary gill rakers, with the diameter of their bases greater than their height, are defined as tubercles or short rakers.
The upper limb gill raker count is given first; the raker at the angle is included in the lower limb count.
Gill raker counts were made on the first gill arch and include rudiments.
Gill raker structure does not provide significant insight into the possible feeding modes of these various planktivorous fish.