Skeletal Development and Mineralization Pattern of the Vertebral Column, Dorsal, Anal and Caudal Fin Complex in Seriola Rivoliana (Valenciennes, 1833) Larvae

Abstract

Bone and fins development in Seriola rivoliana were studied from cleared and stained specimens from 3 to 33 days after hatching. The vertebral column began to mineralize in the neural arches at 4.40 ± 0.14 mm Standard Length (SL), continued with the haemal arches and centrums following a cranial-caudal direction. Mineralization of the caudal fin structures started with the caudal rays by 5.12 ± 0.11 mm SL, at the same time that the notochord flexion occurs. The first dorsal and anal fin structures were the hard spines (S), and lepidotrichium (R) by 8.01 ± 0.26 mm SL. The metamorphosis was completed by 11.82 ± 0.4 mm SL. Finally, the fin supports (pterygiophores) and the caudal fins were completely mineralized by 16.1 ± 0.89 mm SL. In addition, the meristic data of 23 structures were provided. Results from the present study might be used as a practical guide for future studies on this field with S. rivoliana or in related species.

Stress-Protective Role of Dietary α-Tocopherol Supplementation in Longfin Yellowtail (Seriola rivoliana) Juveniles

“…In this aspect, the longfin yellowtail (Seriola rivoliana) presents all these biological and zootechnical characteristics that place this species as a good candidate for aquaculture diversification, including easy handling, rapid growth, and great adaptability to captivity conditions [3]. Furthermore, the actual knowledge available on its biology and larviculture has increased recently [4][5][6][7]. Nevertheless, a better dietary formulation to cover this fish species' nutritional requirements might also help toward regular and better production of early juveniles.…”