branchiostegal

branchiostegal

(ˌbræŋkɪəˈstiːɡəl)
adj
(Zoology) zoology of or relating to the operculum covering the gill slits of fish: branchiostegal membrane; branchiostegal rays.
[from branchia + Greek stegos roof]
References in periodicals archive ?
They possess five to eight branchiostegal rays, being gas-bladder and orbited-sphenoid bone absent.
4-189 produced pectoral ray* Counts Dorsal fin rays 12-14 13-16 Anal fin rays 8-11 8-10 Pelvic fin rays 9 9 Pectoral fin rays 12-13 12-13 visible externally Pectoral fin rays 10-11 10-11 (9 once) lower part Caudal fin rays iv-v 10+9 iv-v iv-v 10+9 iv-v (dorsal + ventral) Gill rakers 12-15+1+29-32 11-14+1+27-33 Branchiostegal rays 12-15 12-14 Lateral line scales 57-65 57-62 Vertebrae (incl.
Gill openings broad, gill membranes united to each other, but free from isthmus, with 10 branchiostegal rays in each side.
Line of melanophores on isthmus, pigment present on branchiostegal membrane under operculum.
In opercular rotation, opercles are rotated outward and the branchial basket expands downward with separation of the branchiostegal rays; the body is tilted slightly head-downward with median fins rigidly fanned out (Figs.
The LDF is based on three morphometric and meristic characters: total branchiostegal ray count, principal anal ray count, and the ratio of upper jaw length to standard length.
Cervical spines corneous; branchiostegal areas of carapace smooth to slightly granular, dorsal surface with scattered punctations.
0108); taken as a natural group, they might be characterized morphologically by the presence of an epipod on third maxilliped, pleurobranchiae on fifth pereiopod, ventral and dorsal rostral teeth, as well as by the absence of branchiostegal, pterygostomian and parapenaeid spines, and transverse and longitudinal sutures on carapace.