논문 상세보기
pp.101-106
어류의 시각 구조와 시각 기능 연구에 있어서 행동적 요인이나 환경적 요인의 중요성은 시각생태학에서 매우 중요하게 다루어지고 있으며, 볼락, Sebastes inermis에 관하여는 아직까지 초기 눈의 성장 및 발달에 관한 발생생물학적 연구가 이루어진 바가 없음을 고려하여 이에 대한 연구를 수행하였다. 볼락의 전장, 두장, 두고, 눈의 직경과 수정체 직경은 산출 직후부터 산출 후 60일까지의 단계에서 양성의 상관관계(positive allometry)를
Importance of behavior factors or environmental factors in visual organization and visual function of fish is treated with great care in visual ecology, and there is no study about initial ocular growth and development on the dark banded rockfish, Sebastes inermis. Thus, this study was performed. The total length, head length, head depth, eye diameter and lens diameter of the dark banded rockfish showed positive allometric relationship between parturition stage and 60 days post-parturition (dpp). The increase in total length relative to head length and head depth, head length growth relative to eye diameter and lens diameter, and head depth growth relative to eye and lens diameter were nearly isometric. The eyes were formed completely at parturtion stage. At this age, the eye has an optic nerve fiber layer, a ganglion cell layer, an inner plexiform layer, an inner nuclear layer, an outer plexiform layer, an outer nuclear layer, an outer limiting membrane, a rod and cone layer and an epithelial layer. Thickness of retina at 60 dpp was higher than that of at parturition stage. During this experiment, the proportion of the rod and cone layer, outer nuclear layer, and optic nerve fiber layer of retina were significantly increased, while the proportion of the outer plexiform layer, inner nuclear layer and ganglion cell layer of retina were significantly decreased (P<0.05). The essential demands that must be met by the retina in this species pertain to light sensitivity and spatial resolution.
