Sensory capabilities of the modified fins of squirrel hake (Urophycis chuss) and searobins (Prionotus carolinus
Reported 96-h L[C.sub.50] of DO on juvenile teleost ranged from 0.6 mg [L.sup.-1] for northern sea robin Prionotus carolinus
to 1.6 mg [L.sup.-1] for summer flounder Paralichthys dentatus and striped bass Morone saxatilis (Miller et al.
Sensory capabilities of the modified pelvic fins of squirrel hake (Urophycis chuss) and searobins (Prionotus carolinus
Somatotopy in the representation of the pectoral fin and free fin rays in the spinal cord of the sea robin, Prionotus carolinus
Station assemblage Inshore Species CPUE Size Syngnathus fuscus ([dagger]) 0.61 (0.27) 108 (13) Prionotus carolinus
([dagger]) 0.17 (0.09) 55 (9) Scuphthalmus aquosus ([dagger]) 0.28 (0.18) 114 (14) Sphoeroides maculatus ([dagger]) 0.11 (0.08) 105 (5) Etropus microstomus ([dagger]) 0.5 (0.25) 45 (10) Micropogonias undulatus ([dagger]) 1.06 (0.61) 15 (2) Prionotus evolans ([dagger]) 0.17 10.12) 48 (14) Hippocampus erectus ([dagger]) 0.11 (0.08) 68 (17) Centropristis striatus ([dagger]) 0.11 (0.11) 52 (8) Cynoscion.
The amino acids, tryptophan, phenylalanine, and aspartic acid, are minor constituents of most tissues, yet are significant stimulants of food searching activity in the sea robin, Prionotus carolinus (Bardach and Case, 1965).
Sensory capabilities of squirrel hake (Urophycis chuss) and searobins (Prionotus carolinus and P.
Juveniles of year-round residents (e.g., Ophidion selenops, Diplectrum formosum, and Prionotus carolinus) were usually the most abundant species, although transient juveniles (e.g., Leiostomus xanthurus, Lagodon rhomboides, and Brevoortia tyrannus) were seasonally abundant.
Many of the resident shelf species were consistently collected in the same cross-shelf regions (i.e., inner and mid-shelf: Ophidion selenops, Prionotus carolinus, Dactyloscopus moorei, Stenotomus sp., and Serraniculus pumilio; outer-shelf: Symphurus minor, Serranus phoebe, Centropristis ocyurus, and Bothus lunatus), and the consistent collection of these species helped form a definition of juvenile assemblages.
The northern searobin, Prionotus carolinus, and striped searobin, P.
Prionotus carolinus eggs were collected from ripe adults in August 1992 in coastal waters and fertilized in the laboratory.
Our study contributes to an understanding of how fishes use continental shelf habitats as nurseries with an examination of the early life history of the northern searobin, Prionotus carolinus
, and the striped searobin, P.