Biology of Finfish and Shellfish

4.12.7. Nauplius VI

MTL: 0.48 mm (0.43-0.54 mm); MW; 0.20 mm (0.18-0.21 mm); MFS: 0.31 mm (0.29-0.34 mm).

Body more elongated, frontal organ and carapace clearly demarcated, append ages not clearly segmented, but surface with annular indentations, furcal lobes with 7 setae each one minute and 2 short setae added to A1 on distolateral aspect, A1 proximally with 5 indistinct segments; endopod of A2 with 3 long setae and 1 short one terminally and with a rudimentary seta added to root of distal seta on inner lateral margin, exopod with 10 setae along inner and distal margin, of which newly added distal outer one rudimentary. Duration of this sub stage was 15 to 24 hours.